cve-dashboard/frontend/src/components/pages/ReportingPage.js

import React, { useState, useEffect, useCallback, useRef, useMemo } from 'react';
import ReactDOM from 'react-dom';
import { RefreshCw, Loader, AlertCircle, PieChart, ChevronUp, ChevronDown, ChevronsUpDown, Settings2, GripVertical, Eye, EyeOff, Filter, Download, RotateCcw } from 'lucide-react';
import * as XLSX from 'xlsx';
import { useAuth } from '../../contexts/AuthContext';

const API_BASE = process.env.REACT_APP_API_BASE || 'http://localhost:3001/api';
const STORAGE_KEY = 'steam_findings_columns_v2';

// ---------------------------------------------------------------------------
// Column definitions — source of truth for labels, sort behaviour, rendering
// ---------------------------------------------------------------------------
const COLUMN_DEFS = {
    findingId:   { label: 'Finding ID',  sortable: true,  filterable: false                  },
    severity:    { label: 'Severity',    sortable: true,  filterable: true                   },
    title:       { label: 'Title',       sortable: true,  filterable: true                   },
    cves:        { label: 'CVEs',        sortable: true,  filterable: true,  multiValue: true },
    hostName:    { label: 'Host',        sortable: true,  filterable: true                   },
    ipAddress:   { label: 'IP Address',  sortable: true,  filterable: true                   },
    dns:         { label: 'DNS',         sortable: true,  filterable: true                   },
    dueDate:     { label: 'Due Date',    sortable: true,  filterable: true                   },
    slaStatus:   { label: 'SLA',         sortable: true,  filterable: true                   },
    buOwnership: { label: 'BU',          sortable: true,  filterable: true                   },
    workflow:    { label: 'Workflow',    sortable: true,  filterable: true                   },
    lastFoundOn: { label: 'Last Found',  sortable: true,  filterable: true                   },
    note:        { label: 'Notes',       sortable: false, filterable: false                  },
};

const DEFAULT_COLUMN_ORDER = [
    { key: 'findingId',   visible: true },
    { key: 'severity',    visible: true },
    { key: 'title',       visible: true },
    { key: 'cves',        visible: true },
    { key: 'hostName',    visible: true },
    { key: 'ipAddress',   visible: true },
    { key: 'dns',         visible: true },
    { key: 'dueDate',     visible: true },
    { key: 'slaStatus',   visible: true },
    { key: 'buOwnership', visible: true },
    { key: 'workflow',    visible: true },
    { key: 'lastFoundOn', visible: true },
    { key: 'note',        visible: true },
];

// ---------------------------------------------------------------------------
// Persist / load column config
// ---------------------------------------------------------------------------
function loadColumnOrder() {
    try {
        const saved = JSON.parse(localStorage.getItem(STORAGE_KEY) || 'null');
        if (saved && Array.isArray(saved)) {
            const savedKeys = new Set(saved.map((c) => c.key));
            const merged = saved.filter((c) => COLUMN_DEFS[c.key]);
            DEFAULT_COLUMN_ORDER.forEach((d) => {
                if (!savedKeys.has(d.key)) merged.push({ ...d });
            });
            return merged;
        }
    } catch { /* ignore */ }
    return DEFAULT_COLUMN_ORDER.map((c) => ({ ...c }));
}

function saveColumnOrder(order) {
    try { localStorage.setItem(STORAGE_KEY, JSON.stringify(order)); } catch { /* ignore */ }
}

// ---------------------------------------------------------------------------
// Sort accessor by column key
// ---------------------------------------------------------------------------
function getVal(finding, key) {
    switch (key) {
        case 'findingId':   return finding.id ?? '';
        case 'severity':    return finding.severity ?? 0;
        case 'title':       return finding.title ?? '';
        case 'hostName':    return finding.hostName ?? '';
        case 'ipAddress':   return finding.ipAddress ?? '';
        case 'dns':         return finding.dns ?? '';
        case 'dueDate':     return finding.dueDate ?? '';
        case 'slaStatus':   return finding.slaStatus ?? '';
        case 'cves':        return (finding.cves || []).length; // sort by CVE count
        case 'buOwnership': return finding.buOwnership ?? '';
        case 'workflow':    return finding.workflow?.id ?? '';
        case 'lastFoundOn': return finding.lastFoundOn ?? '';
        case 'note':        return finding.note ?? '';
        default:            return '';
    }
}

// ---------------------------------------------------------------------------
// Filter accessor — severity → vrrGroup label; cves handled as multi-value
// ---------------------------------------------------------------------------
function getFilterVal(finding, key) {
    if (key === 'severity') return finding.vrrGroup || '';
    if (key === 'cves')     return (finding.cves || []).join(','); // not used directly; see multiValue logic
    if (key === 'workflow') return finding.workflow?.id || '';
    return String(getVal(finding, key) ?? '');
}

// ---------------------------------------------------------------------------
// Export value accessor — plain text representation for CSV/XLSX
// ---------------------------------------------------------------------------
function getExportVal(finding, key) {
    switch (key) {
        case 'findingId':   return finding.id ?? '';
        case 'severity':    return finding.vrrGroup ? `${finding.severity?.toFixed(2)} ${finding.vrrGroup}` : String(finding.severity ?? '');
        case 'title':       return finding.title ?? '';
        case 'cves':        return (finding.cves || []).join(', ');
        case 'hostName':    return finding.hostName ?? '';
        case 'ipAddress':   return finding.ipAddress ?? '';
        case 'dns':         return finding.dns ?? '';
        case 'dueDate':     return finding.dueDate ?? '';
        case 'slaStatus':   return finding.slaStatus ?? '';
        case 'buOwnership': return finding.buOwnership ?? '';
        case 'workflow':    return finding.workflow ? `${finding.workflow.id} (${finding.workflow.state})` : '';
        case 'lastFoundOn': return finding.lastFoundOn ?? '';
        case 'note':        return finding.note ?? '';
        default:            return '';
    }
}

// ---------------------------------------------------------------------------
// Action coverage classification — used by chart and filter
// ---------------------------------------------------------------------------
const EXC_PATTERN = /EXC-\d+/i;

function classifyFinding(finding) {
    if (finding.workflow != null)           return 'fp';
    if (EXC_PATTERN.test(finding.note || '')) return 'archer';
    return 'pending';
}

// ---------------------------------------------------------------------------
// Style helpers
// ---------------------------------------------------------------------------
function severityColor(vrrGroup) {
    switch ((vrrGroup || '').toUpperCase()) {
        case 'CRITICAL': return { bg: 'rgba(239,68,68,0.15)',   border: '#EF4444', text: '#EF4444' };
        case 'HIGH':     return { bg: 'rgba(245,158,11,0.15)',  border: '#F59E0B', text: '#F59E0B' };
        case 'MEDIUM':   return { bg: 'rgba(234,179,8,0.15)',   border: '#EAB308', text: '#EAB308' };
        default:         return { bg: 'rgba(100,116,139,0.15)', border: '#64748B', text: '#94A3B8' };
    }
}

function slaColor(slaStatus) {
    switch ((slaStatus || '').toUpperCase()) {
        case 'OVERDUE':    return '#EF4444';
        case 'AT_RISK':    return '#F59E0B';
        case 'WITHIN_SLA': return '#10B981';
        default:           return '#64748B';
    }
}

function dueDateColor(dueDate) {
    if (!dueDate) return '#64748B';
    const today = new Date();
    const due   = new Date(dueDate);
    const diffDays = Math.ceil((due - today) / (1000 * 60 * 60 * 24));
    if (diffDays < 0)   return '#EF4444';
    if (diffDays <= 30) return '#F59E0B';
    return '#94A3B8';
}

function workflowStyle(state) {
    // Colors reflect action urgency — all findings here are Open, so Approved won't appear.
    switch ((state || '').toLowerCase()) {
        case 'expired':     return { bg: 'rgba(239,68,68,0.12)',   border: 'rgba(239,68,68,0.4)',    text: '#EF4444' }; // overdue — renew FP
        case 'rejected':    return { bg: 'rgba(239,68,68,0.12)',   border: 'rgba(239,68,68,0.4)',    text: '#EF4444' }; // denied — must remediate
        case 'reworked':    return { bg: 'rgba(245,158,11,0.12)',  border: 'rgba(245,158,11,0.4)',   text: '#F59E0B' }; // challenged — resubmit FP
        case 'actionable':  return { bg: 'rgba(245,158,11,0.12)',  border: 'rgba(245,158,11,0.4)',   text: '#F59E0B' }; // needs action
        case 'requested':   return { bg: 'rgba(14,165,233,0.12)',  border: 'rgba(14,165,233,0.35)',  text: '#0EA5E9' }; // in flight — awaiting approval
        default:            return { bg: 'rgba(100,116,139,0.08)', border: 'rgba(100,116,139,0.2)',  text: '#64748B' }; // unknown state
    }
}

// ---------------------------------------------------------------------------
// SVG Donut Chart — Open vs Closed findings
// ---------------------------------------------------------------------------
function polarToCartesian(cx, cy, r, angleDeg) {
    const rad = ((angleDeg - 90) * Math.PI) / 180;
    return { x: cx + r * Math.cos(rad), y: cy + r * Math.sin(rad) };
}

function donutArcPath(cx, cy, outerR, innerR, startDeg, endDeg) {
    // Full circle must be split into two arcs (SVG can't render a 360° arc)
    if (Math.abs(endDeg - startDeg) >= 359.9) {
        const mid = startDeg + 180;
        return donutArcPath(cx, cy, outerR, innerR, startDeg, mid) + ' ' +
               donutArcPath(cx, cy, outerR, innerR, mid, endDeg);
    }
    const largeArc = endDeg - startDeg > 180 ? 1 : 0;
    const s  = polarToCartesian(cx, cy, outerR, startDeg);
    const e  = polarToCartesian(cx, cy, outerR, endDeg);
    const si = polarToCartesian(cx, cy, innerR, endDeg);
    const ei = polarToCartesian(cx, cy, innerR, startDeg);
    return [
        `M ${s.x.toFixed(2)} ${s.y.toFixed(2)}`,
        `A ${outerR} ${outerR} 0 ${largeArc} 1 ${e.x.toFixed(2)} ${e.y.toFixed(2)}`,
        `L ${si.x.toFixed(2)} ${si.y.toFixed(2)}`,
        `A ${innerR} ${innerR} 0 ${largeArc} 0 ${ei.x.toFixed(2)} ${ei.y.toFixed(2)}`,
        'Z',
    ].join(' ');
}

function StatusDonut({ open, closed, loading }) {
    const SIZE = 180;
    const CX = SIZE / 2;
    const CY = SIZE / 2;
    const OUTER = 72;
    const INNER = 48;

    if (loading) {
        return (
            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: `${SIZE}px` }}>
                <Loader style={{ width: '24px', height: '24px', color: '#0EA5E9', animation: 'spin 1s linear infinite' }} />
            </div>
        );
    }

    const total = open + closed;
    if (total === 0) {
        return (
            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: `${SIZE}px` }}>
                <p style={{ fontFamily: 'monospace', fontSize: '0.75rem', color: '#475569' }}>No data — click Sync to load</p>
            </div>
        );
    }

    const openDeg = (open / total) * 360;
    const segments = [
        { label: 'Open',   count: open,   color: '#0EA5E9', start: 0,       end: openDeg },
        { label: 'Closed', count: closed, color: '#475569', start: openDeg, end: 360     },
    ].filter((s) => s.count > 0);

    return (
        <div style={{ display: 'flex', alignItems: 'center', gap: '2rem' }}>
            <svg width={SIZE} height={SIZE} style={{ flexShrink: 0 }}>
                {/* Gap ring behind slices */}
                <circle cx={CX} cy={CY} r={OUTER + 1} fill="none" stroke="rgba(10,18,32,0.8)" strokeWidth="2" />
                {segments.map((seg) => (
                    <path
                        key={seg.label}
                        d={donutArcPath(CX, CY, OUTER, INNER, seg.start, seg.end)}
                        fill={seg.color}
                        opacity={0.88}
                    />
                ))}
                {/* Center total */}
                <text x={CX} y={CY - 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '22px', fontWeight: '700', fill: '#E2E8F0' }}>
                    {total.toLocaleString()}
                </text>
                <text x={CX} y={CY + 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '8.5px', fontWeight: '600', fill: '#475569', letterSpacing: '0.12em' }}>
                    TOTAL
                </text>
            </svg>

            {/* Legend */}
            <div style={{ display: 'flex', flexDirection: 'column', gap: '1rem' }}>
                {segments.map((seg) => (
                    <div key={seg.label} style={{ display: 'flex', alignItems: 'center', gap: '0.625rem' }}>
                        <div style={{ width: '10px', height: '10px', borderRadius: '2px', background: seg.color, flexShrink: 0 }} />
                        <div>
                            <div style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.08em' }}>
                                {seg.label}
                            </div>
                            <div style={{ fontFamily: 'monospace', fontSize: '0.9rem', fontWeight: '700', color: '#E2E8F0', lineHeight: 1.2 }}>
                                {seg.count.toLocaleString()}
                                <span style={{ fontSize: '0.68rem', fontWeight: '400', color: '#64748B', marginLeft: '0.4rem' }}>
                                    ({((seg.count / total) * 100).toFixed(1)}%)
                                </span>
                            </div>
                        </div>
                    </div>
                ))}
            </div>
        </div>
    );
}

// ---------------------------------------------------------------------------
// SVG Donut Chart — Action Coverage (FP Request | Archer Exception | Pending)
// ---------------------------------------------------------------------------
const ACTION_DEFS = [
    { key: 'fp',      label: 'FP Request',      color: '#0EA5E9' },
    { key: 'archer',  label: 'Archer Exception', color: '#F59E0B' },
    { key: 'pending', label: 'Pending',          color: '#EF4444' },
];

function ActionCoverageDonut({ findings, activeSegment, onSegmentClick }) {
    const SIZE = 180;
    const CX = SIZE / 2;
    const CY = SIZE / 2;
    const OUTER = 72;
    const INNER = 48;

    const counts = useMemo(() => {
        const map = { fp: 0, archer: 0, pending: 0 };
        findings.forEach((f) => { map[classifyFinding(f)]++; });
        return map;
    }, [findings]);

    const total = findings.length;

    if (total === 0) {
        return (
            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: `${SIZE}px` }}>
                <p style={{ fontFamily: 'monospace', fontSize: '0.75rem', color: '#475569' }}>No data — click Sync to load</p>
            </div>
        );
    }

    let cursor = 0;
    const segments = ACTION_DEFS.map((def) => {
        const count = counts[def.key];
        const start = cursor;
        const end = count > 0 ? cursor + (count / total) * 360 : cursor;
        if (count > 0) cursor = end;
        return { ...def, count, start, end };
    });

    const hasActive = !!activeSegment;

    return (
        <div style={{ display: 'flex', alignItems: 'center', gap: '2rem' }}>
            <svg width={SIZE} height={SIZE} style={{ flexShrink: 0 }}>
                <circle cx={CX} cy={CY} r={OUTER + 1} fill="none" stroke="rgba(10,18,32,0.8)" strokeWidth="2" />
                {segments.filter((s) => s.count > 0).map((seg) => {
                    const isActive = activeSegment === seg.key;
                    return (
                        <path
                            key={seg.key}
                            d={donutArcPath(CX, CY, OUTER, INNER, seg.start, seg.end)}
                            fill={seg.color}
                            opacity={hasActive ? (isActive ? 1 : 0.25) : 0.88}
                            stroke={isActive ? 'rgba(255,255,255,0.6)' : 'none'}
                            strokeWidth={isActive ? 2 : 0}
                            style={{ cursor: 'pointer', transition: 'opacity 0.2s' }}
                            onClick={() => onSegmentClick(isActive ? null : seg.key)}
                        />
                    );
                })}
                <text x={CX} y={CY - 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '22px', fontWeight: '700', fill: '#E2E8F0' }}>
                    {total.toLocaleString()}
                </text>
                <text x={CX} y={CY + 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '8.5px', fontWeight: '600', fill: '#475569', letterSpacing: '0.12em' }}>
                    TOTAL
                </text>
            </svg>

            {/* Legend — always shows all 3 categories */}
            <div style={{ display: 'flex', flexDirection: 'column', gap: '0.6rem' }}>
                {segments.map((seg) => {
                    const isActive = activeSegment === seg.key;
                    const dimmed = hasActive && !isActive;
                    return (
                        <div
                            key={seg.key}
                            onClick={() => onSegmentClick(isActive ? null : seg.key)}
                            style={{ display: 'flex', alignItems: 'center', gap: '0.5rem', cursor: 'pointer', opacity: dimmed ? 0.35 : 1, transition: 'opacity 0.2s' }}
                        >
                            <div style={{ width: '8px', height: '8px', borderRadius: '2px', background: seg.color, flexShrink: 0, outline: isActive ? `2px solid ${seg.color}` : 'none', outlineOffset: '1px' }} />
                            <div>
                                <span style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.06em' }}>
                                    {seg.label}
                                </span>
                                <span style={{ fontFamily: 'monospace', fontSize: '0.8rem', fontWeight: '700', color: '#E2E8F0', marginLeft: '0.4rem' }}>
                                    {seg.count}
                                </span>
                                <span style={{ fontFamily: 'monospace', fontSize: '0.65rem', color: '#475569', marginLeft: '0.25rem' }}>
                                    ({total > 0 ? ((seg.count / total) * 100).toFixed(0) : 0}%)
                                </span>
                            </div>
                        </div>
                    );
                })}
                {hasActive && (
                    <button
                        onClick={() => onSegmentClick(null)}
                        style={{ marginTop: '0.25rem', background: 'none', border: 'none', fontFamily: 'monospace', fontSize: '0.65rem', color: '#475569', cursor: 'pointer', textAlign: 'left', padding: 0, textDecoration: 'underline' }}
                    >
                        clear filter
                    </button>
                )}
            </div>
        </div>
    );
}

// ---------------------------------------------------------------------------
// SVG Donut Chart — FP Workflow Status distribution
// ---------------------------------------------------------------------------
const FP_WORKFLOW_DEFS = [
    { key: 'Actionable', label: 'Actionable', color: '#F59E0B' },
    { key: 'Requested',  label: 'Requested',  color: '#0EA5E9' },
    { key: 'Reworked',   label: 'Reworked',   color: '#A855F7' },
    { key: 'Approved',   label: 'Approved',   color: '#22C55E' },
    { key: 'Rejected',   label: 'Rejected',   color: '#EF4444' },
    { key: 'Expired',    label: 'Expired',    color: '#64748B' },
    { key: 'Unknown',    label: 'Unknown',    color: '#334155' },
];

function FPWorkflowDonut({ counts, total, centerLabel = 'FP TOTAL' }) {
    const SIZE = 180;
    const CX = SIZE / 2;
    const CY = SIZE / 2;
    const OUTER = 72;
    const INNER = 48;

    if (total === 0) {
        return (
            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: `${SIZE}px` }}>
                <p style={{ fontFamily: 'monospace', fontSize: '0.75rem', color: '#475569' }}>No FP workflows — click Sync to load</p>
            </div>
        );
    }

    let cursor = 0;
    const segments = FP_WORKFLOW_DEFS.map((def) => {
        const count = counts[def.key] || 0;
        const start = cursor;
        const end = count > 0 ? cursor + (count / total) * 360 : cursor;
        if (count > 0) cursor = end;
        return { ...def, count, start, end };
    }).filter(s => s.count > 0);

    return (
        <div style={{ display: 'flex', alignItems: 'center', gap: '2rem' }}>
            <svg width={SIZE} height={SIZE} style={{ flexShrink: 0 }}>
                <circle cx={CX} cy={CY} r={OUTER + 1} fill="none" stroke="rgba(10,18,32,0.8)" strokeWidth="2" />
                {segments.map((seg) => (
                    <path
                        key={seg.key}
                        d={donutArcPath(CX, CY, OUTER, INNER, seg.start, seg.end)}
                        fill={seg.color}
                        opacity={0.88}
                    />
                ))}
                <text x={CX} y={CY - 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '22px', fontWeight: '700', fill: '#E2E8F0' }}>
                    {total.toLocaleString()}
                </text>
                <text x={CX} y={CY + 10} textAnchor="middle" style={{ fontFamily: 'monospace', fontSize: '8.5px', fontWeight: '600', fill: '#475569', letterSpacing: '0.12em' }}>
                    {centerLabel}
                </text>
            </svg>

            {/* Legend */}
            <div style={{ display: 'flex', flexDirection: 'column', gap: '0.6rem' }}>
                {segments.map((seg) => (
                    <div key={seg.key} style={{ display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
                        <div style={{ width: '8px', height: '8px', borderRadius: '2px', background: seg.color, flexShrink: 0 }} />
                        <div>
                            <span style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.06em' }}>
                                {seg.label}
                            </span>
                            <span style={{ fontFamily: 'monospace', fontSize: '0.8rem', fontWeight: '700', color: '#E2E8F0', marginLeft: '0.4rem' }}>
                                {seg.count}
                            </span>
                            <span style={{ fontFamily: 'monospace', fontSize: '0.65rem', color: '#475569', marginLeft: '0.25rem' }}>
                                ({((seg.count / total) * 100).toFixed(0)}%)
                            </span>
                        </div>
                    </div>
                ))}
            </div>
        </div>
    );
}

function SortIcon({ colKey, sort }) {
    if (sort.field !== colKey) return <ChevronsUpDown style={{ width: '11px', height: '11px', opacity: 0.3, marginLeft: '3px', flexShrink: 0 }} />;
    return sort.dir === 'asc'
        ? <ChevronUp   style={{ width: '11px', height: '11px', color: '#0EA5E9', marginLeft: '3px', flexShrink: 0 }} />
        : <ChevronDown style={{ width: '11px', height: '11px', color: '#0EA5E9', marginLeft: '3px', flexShrink: 0 }} />;
}

// ---------------------------------------------------------------------------
// OverrideCell — inline editable hostname/dns with amber dot when overridden
// ---------------------------------------------------------------------------
function OverrideCell({ findingId, field, originalValue, initialOverride, canWrite }) {
    const effective = initialOverride ?? originalValue ?? '';
    const [value, setValue]           = useState(effective);
    const [isOverridden, setOverridden] = useState(!!initialOverride);
    const [editing, setEditing]       = useState(false);
    const [saving, setSaving]         = useState(false);
    const lastSaved                   = useRef(effective);
    const inputRef                    = useRef(null);

    // Sync when the finding updates (e.g. after a full sync)
    useEffect(() => {
        const eff = initialOverride ?? originalValue ?? '';
        setValue(eff);
        setOverridden(!!initialOverride);
        lastSaved.current = eff;
    }, [initialOverride, originalValue]);

    useEffect(() => {
        if (editing && inputRef.current) inputRef.current.focus();
    }, [editing]);

    const persist = useCallback(async (newVal) => {
        const trimmed = newVal.trim();
        if (trimmed === lastSaved.current) return;
        setSaving(true);
        try {
            const res = await fetch(`${API_BASE}/ivanti/findings/${findingId}/override`, {
                method: 'PUT',
                credentials: 'include',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ field, value: trimmed }),
            });
            if (res.ok) {
                const data = await res.json();
                const cleared = data.value === null;
                const displayed = cleared ? (originalValue ?? '') : trimmed;
                setValue(displayed);
                setOverridden(!cleared);
                lastSaved.current = displayed;
            } else {
                setValue(lastSaved.current); // revert on error
            }
        } catch {
            setValue(lastSaved.current);
        } finally {
            setSaving(false);
        }
    }, [findingId, field, originalValue]);

    const handleBlur = () => { setEditing(false); persist(value); };
    const handleKeyDown = (e) => {
        if (e.key === 'Enter')  { e.target.blur(); }
        if (e.key === 'Escape') { setValue(lastSaved.current); setEditing(false); }
    };
    const handleRevert = (e) => { e.stopPropagation(); setValue(''); persist(''); };

    if (editing) {
        return (
            <td style={{ padding: '0.3rem 0.5rem' }}>
                <input
                    ref={inputRef}
                    value={value}
                    onChange={(e) => setValue(e.target.value)}
                    onBlur={handleBlur}
                    onKeyDown={handleKeyDown}
                    style={{
                        width: '100%', minWidth: '120px',
                        background: 'rgba(14,165,233,0.08)',
                        border: '1px solid rgba(14,165,233,0.4)',
                        borderRadius: '0.25rem',
                        padding: '0.2rem 0.4rem',
                        color: '#E2E8F0', fontFamily: 'monospace', fontSize: '0.72rem',
                        outline: 'none',
                    }}
                />
            </td>
        );
    }

    return (
        <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap' }}>
            <span
                onClick={canWrite ? () => setEditing(true) : undefined}
                title={isOverridden ? `Ivanti value: ${originalValue || '—'}\nClick to edit` : canWrite ? 'Click to edit' : undefined}
                style={{
                    display: 'inline-flex', alignItems: 'center', gap: '0.3rem',
                    color: isOverridden ? '#E2E8F0' : '#94A3B8',
                    fontFamily: 'monospace', fontSize: '0.72rem',
                    cursor: canWrite ? 'text' : 'default',
                }}
            >
                {isOverridden && (
                    <span title="Local override active" style={{ width: '5px', height: '5px', borderRadius: '50%', background: '#F59E0B', flexShrink: 0, marginRight: '1px' }} />
                )}
                {value || '—'}
                {saving && <Loader style={{ width: '10px', height: '10px', color: '#475569', animation: 'spin 1s linear infinite', flexShrink: 0 }} />}
                {isOverridden && canWrite && !saving && (
                    <button
                        onClick={handleRevert}
                        title="Revert to Ivanti value"
                        style={{ background: 'none', border: 'none', padding: '0 1px', cursor: 'pointer', color: '#475569', lineHeight: 1, flexShrink: 0, display: 'inline-flex', alignItems: 'center' }}
                    >
                        <RotateCcw style={{ width: '10px', height: '10px' }} />
                    </button>
                )}
            </span>
        </td>
    );
}

// ---------------------------------------------------------------------------
// NoteCell — inline editable, saves on blur
// ---------------------------------------------------------------------------
function NoteCell({ findingId, initialNote }) {
    const [value, setValue]   = useState(initialNote || '');
    const [saving, setSaving] = useState(false);
    const lastSaved           = useRef(initialNote || '');

    useEffect(() => {
        setValue(initialNote || '');
        lastSaved.current = initialNote || '';
    }, [initialNote]);

    const save = useCallback(async () => {
        if (value === lastSaved.current) return;
        setSaving(true);
        try {
            await fetch(`${API_BASE}/ivanti/findings/${encodeURIComponent(findingId)}/note`, {
                method: 'PUT',
                headers: { 'Content-Type': 'application/json' },
                credentials: 'include',
                body: JSON.stringify({ note: value })
            });
            lastSaved.current = value;
        } catch (e) {
            console.error('Failed to save note:', e);
        } finally {
            setSaving(false);
        }
    }, [findingId, value]);

    return (
        <div style={{ position: 'relative' }}>
            <input
                type="text"
                value={value}
                maxLength={255}
                onChange={(e) => setValue(e.target.value)}
                onBlur={save}
                placeholder="Add note…"
                style={{
                    width: '100%', minWidth: '160px',
                    background: 'rgba(14,165,233,0.05)',
                    border: '1px solid rgba(14,165,233,0.2)',
                    borderRadius: '4px', padding: '4px 8px',
                    color: '#CBD5E1', fontSize: '0.75rem',
                    fontFamily: 'inherit', outline: 'none', boxSizing: 'border-box'
                }}
                onFocus={(e) => { e.target.style.borderColor = 'rgba(14,165,233,0.6)'; e.target.style.background = 'rgba(14,165,233,0.1)'; }}
                onBlurCapture={(e) => { e.target.style.borderColor = 'rgba(14,165,233,0.2)'; e.target.style.background = 'rgba(14,165,233,0.05)'; }}
            />
            {saving && <Loader style={{ width: '10px', height: '10px', position: 'absolute', right: '6px', top: '6px', color: '#0EA5E9' }} />}
        </div>
    );
}

// ---------------------------------------------------------------------------
// ColumnManager — popover with drag-to-reorder and show/hide toggles
// ---------------------------------------------------------------------------
function ColumnManager({ columnOrder, onChange }) {
    const [open, setOpen]       = useState(false);
    const [dragIdx, setDragIdx] = useState(null);
    const [overIdx, setOverIdx] = useState(null);
    const panelRef              = useRef(null);
    const btnRef                = useRef(null);

    useEffect(() => {
        if (!open) return;
        const handler = (e) => {
            if (!panelRef.current?.contains(e.target) && !btnRef.current?.contains(e.target)) setOpen(false);
        };
        document.addEventListener('mousedown', handler);
        return () => document.removeEventListener('mousedown', handler);
    }, [open]);

    const toggleVisible = (key) => {
        onChange(columnOrder.map((c) => c.key === key ? { ...c, visible: !c.visible } : c));
    };

    const handleDragStart = (idx) => setDragIdx(idx);
    const handleDragOver  = (e, idx) => { e.preventDefault(); setOverIdx(idx); };
    const handleDrop      = (idx) => {
        if (dragIdx === null || dragIdx === idx) { setDragIdx(null); setOverIdx(null); return; }
        const updated = [...columnOrder];
        const [moved] = updated.splice(dragIdx, 1);
        updated.splice(idx, 0, moved);
        onChange(updated);
        setDragIdx(null);
        setOverIdx(null);
    };

    const visibleCount = columnOrder.filter((c) => c.visible).length;

    return (
        <div style={{ position: 'relative' }}>
            <button
                ref={btnRef}
                onClick={() => setOpen((p) => !p)}
                style={{
                    display: 'flex', alignItems: 'center', gap: '0.375rem',
                    padding: '0.375rem 0.75rem',
                    background: open ? 'rgba(14,165,233,0.15)' : 'rgba(14,165,233,0.07)',
                    border: `1px solid rgba(14,165,233,${open ? '0.5' : '0.25'})`,
                    borderRadius: '0.375rem',
                    color: '#0EA5E9', cursor: 'pointer',
                    fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                    textTransform: 'uppercase', letterSpacing: '0.05em'
                }}
            >
                <Settings2 style={{ width: '13px', height: '13px' }} />
                Columns
                <span style={{ fontSize: '0.65rem', opacity: 0.7 }}>({visibleCount}/{columnOrder.length})</span>
            </button>

            {open && (
                <div
                    ref={panelRef}
                    style={{
                        position: 'absolute', top: 'calc(100% + 8px)', right: 0,
                        width: '220px', zIndex: 100,
                        background: 'linear-gradient(180deg, #0F1A2E 0%, #0A1628 100%)',
                        border: '1px solid rgba(14,165,233,0.25)',
                        borderRadius: '0.5rem',
                        boxShadow: '0 8px 24px rgba(0,0,0,0.6)',
                        padding: '0.5rem'
                    }}
                >
                    <div style={{ fontSize: '0.65rem', color: '#475569', fontFamily: 'monospace', textTransform: 'uppercase', letterSpacing: '0.1em', padding: '0.25rem 0.5rem 0.5rem', borderBottom: '1px solid rgba(255,255,255,0.05)', marginBottom: '0.375rem' }}>
                        Drag to reorder · click to toggle
                    </div>
                    {columnOrder.map((col, idx) => {
                        const def        = COLUMN_DEFS[col.key];
                        const isDragging = dragIdx === idx;
                        const isOver     = overIdx === idx && dragIdx !== null && dragIdx !== idx;
                        return (
                            <div
                                key={col.key}
                                draggable
                                onDragStart={() => handleDragStart(idx)}
                                onDragOver={(e) => handleDragOver(e, idx)}
                                onDrop={() => handleDrop(idx)}
                                onDragEnd={() => { setDragIdx(null); setOverIdx(null); }}
                                style={{
                                    display: 'flex', alignItems: 'center', gap: '0.5rem',
                                    padding: '0.4rem 0.5rem', borderRadius: '0.25rem', cursor: 'grab',
                                    opacity: isDragging ? 0.4 : 1,
                                    background: isOver ? 'rgba(14,165,233,0.12)' : 'transparent',
                                    borderTop: isOver ? '2px solid #0EA5E9' : '2px solid transparent',
                                    transition: 'background 0.1s'
                                }}
                            >
                                <GripVertical style={{ width: '14px', height: '14px', color: '#334155', flexShrink: 0 }} />
                                <span style={{ flex: 1, fontSize: '0.78rem', color: col.visible ? '#CBD5E1' : '#475569', fontFamily: 'monospace' }}>
                                    {def?.label || col.key}
                                </span>
                                <button
                                    onClick={(e) => { e.stopPropagation(); toggleVisible(col.key); }}
                                    style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: col.visible ? '#0EA5E9' : '#334155', lineHeight: 1 }}
                                >
                                    {col.visible ? <Eye style={{ width: '14px', height: '14px' }} /> : <EyeOff style={{ width: '14px', height: '14px' }} />}
                                </button>
                            </div>
                        );
                    })}
                </div>
            )}
        </div>
    );
}

// ---------------------------------------------------------------------------
// FilterDropdown — portal-based so it escapes overflow:auto clipping
// ---------------------------------------------------------------------------
function FilterDropdown({ anchorEl, colKey, findings, activeFilter, onFilterChange, onClose }) {
    const [pos, setPos]       = useState({ top: 0, left: 0 });
    const [search, setSearch] = useState('');
    const panelRef            = useRef(null);
    const inputRef            = useRef(null);

    // Compute fixed position from anchor button's viewport rect
    useEffect(() => {
        if (!anchorEl) return;
        const r = anchorEl.getBoundingClientRect();
        setPos({ top: r.bottom + 4, left: r.left });
        setTimeout(() => inputRef.current?.focus(), 0);
    }, [anchorEl]);

    // Close on outside click
    useEffect(() => {
        const handler = (e) => {
            if (panelRef.current && !panelRef.current.contains(e.target) &&
                !(anchorEl && anchorEl.contains(e.target))) {
                onClose();
            }
        };
        document.addEventListener('mousedown', handler);
        return () => document.removeEventListener('mousedown', handler);
    }, [anchorEl, onClose]);

    // Close on Escape
    useEffect(() => {
        const handler = (e) => { if (e.key === 'Escape') onClose(); };
        document.addEventListener('keydown', handler);
        return () => document.removeEventListener('keydown', handler);
    }, [onClose]);

    // Unique values from the full (unfiltered) findings list.
    // Multi-value columns (e.g. cves) expand their array so each item is a separate option.
    const allValues = useMemo(() => {
        const def  = COLUMN_DEFS[colKey];
        const vals = new Set();
        findings.forEach((f) => {
            if (def?.multiValue) {
                (f[colKey] || []).forEach((v) => { if (String(v).trim()) vals.add(String(v).trim()); });
            } else {
                const v = getFilterVal(f, colKey).trim();
                if (v) vals.add(v);
            }
        });
        return [...vals].sort((a, b) => a.localeCompare(b, undefined, { numeric: true }));
    }, [findings, colKey]);

    const displayed = search.trim()
        ? allValues.filter((v) => v.toLowerCase().includes(search.toLowerCase()))
        : allValues;

    const isChecked    = (val) => !activeFilter || activeFilter.has(val);
    const activeCount  = activeFilter ? activeFilter.size : allValues.length;

    const toggle = (val) => {
        let next;
        if (!activeFilter) {
            next = new Set(allValues);
            next.delete(val);
        } else {
            next = new Set(activeFilter);
            if (next.has(val)) next.delete(val); else next.add(val);
        }
        // If all values selected again, remove the filter entirely
        onFilterChange(next.size >= allValues.length ? null : next);
    };

    return ReactDOM.createPortal(
        <div
            ref={panelRef}
            style={{
                position: 'fixed', top: pos.top, left: pos.left,
                width: '220px', zIndex: 9999,
                background: 'linear-gradient(180deg, #0F1A2E 0%, #0A1628 100%)',
                border: '1px solid rgba(14,165,233,0.3)',
                borderRadius: '0.5rem',
                boxShadow: '0 8px 32px rgba(0,0,0,0.8)',
                padding: '0.5rem',
            }}
        >
            {/* Search */}
            <input
                ref={inputRef}
                type="text"
                value={search}
                onChange={(e) => setSearch(e.target.value)}
                placeholder="Search values…"
                style={{
                    width: '100%', marginBottom: '0.375rem',
                    background: 'rgba(14,165,233,0.05)',
                    border: '1px solid rgba(14,165,233,0.2)',
                    borderRadius: '0.25rem', padding: '0.3rem 0.5rem',
                    color: '#CBD5E1', fontSize: '0.72rem',
                    fontFamily: 'monospace', outline: 'none', boxSizing: 'border-box',
                }}
            />

            {/* Select All / Clear */}
            <div style={{ display: 'flex', gap: '0.375rem', marginBottom: '0.375rem', paddingBottom: '0.375rem', borderBottom: '1px solid rgba(255,255,255,0.06)' }}>
                <button
                    onClick={() => onFilterChange(null)}
                    style={{ flex: 1, padding: '0.2rem', background: 'rgba(14,165,233,0.08)', border: '1px solid rgba(14,165,233,0.2)', borderRadius: '0.25rem', color: '#0EA5E9', cursor: 'pointer', fontSize: '0.65rem', fontFamily: 'monospace', textTransform: 'uppercase', letterSpacing: '0.05em' }}
                >
                    Select All
                </button>
                <button
                    onClick={() => onFilterChange(new Set())}
                    style={{ flex: 1, padding: '0.2rem', background: 'rgba(239,68,68,0.08)', border: '1px solid rgba(239,68,68,0.2)', borderRadius: '0.25rem', color: '#EF4444', cursor: 'pointer', fontSize: '0.65rem', fontFamily: 'monospace', textTransform: 'uppercase', letterSpacing: '0.05em' }}
                >
                    Clear
                </button>
            </div>

            {/* Value checkboxes */}
            <div style={{ maxHeight: '200px', overflowY: 'auto' }}>
                {displayed.length === 0 ? (
                    <div style={{ fontSize: '0.68rem', color: '#475569', textAlign: 'center', padding: '0.5rem 0' }}>No values</div>
                ) : displayed.map((val) => (
                    <label
                        key={val}
                        style={{ display: 'flex', alignItems: 'center', gap: '0.5rem', padding: '0.25rem 0.375rem', borderRadius: '0.25rem', cursor: 'pointer', color: isChecked(val) ? '#CBD5E1' : '#475569', fontSize: '0.72rem', fontFamily: 'monospace' }}
                        onMouseEnter={(e) => e.currentTarget.style.background = 'rgba(14,165,233,0.08)'}
                        onMouseLeave={(e) => e.currentTarget.style.background = 'transparent'}
                    >
                        <input
                            type="checkbox"
                            checked={isChecked(val)}
                            onChange={() => toggle(val)}
                            style={{ accentColor: '#0EA5E9', width: '12px', height: '12px', flexShrink: 0, cursor: 'pointer' }}
                        />
                        <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{val}</span>
                    </label>
                ))}
            </div>

            {/* Status footer */}
            <div style={{ marginTop: '0.375rem', paddingTop: '0.375rem', borderTop: '1px solid rgba(255,255,255,0.06)', fontSize: '0.65rem', color: '#475569', textAlign: 'center', fontFamily: 'monospace' }}>
                {activeCount} / {allValues.length} selected
            </div>
        </div>,
        document.body
    );
}

// ---------------------------------------------------------------------------
// Render a single table cell by column key
// ---------------------------------------------------------------------------
function TableCell({ colKey, finding, canWrite }) {
    switch (colKey) {
        case 'findingId':
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap', color: '#475569', fontFamily: 'monospace', fontSize: '0.68rem' }}>
                    {finding.id || '—'}
                </td>
            );
        case 'severity': {
            const sc = severityColor(finding.vrrGroup);
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap' }}>
                    <span style={{ display: 'inline-flex', alignItems: 'center', gap: '0.3rem', padding: '0.2rem 0.45rem', borderRadius: '0.25rem', background: sc.bg, border: `1px solid ${sc.border}40`, fontFamily: 'monospace', fontWeight: '700', color: sc.text, fontSize: '0.72rem' }}>
                        {finding.severity?.toFixed(2)}
                        <span style={{ fontSize: '0.6rem', opacity: 0.75 }}>{finding.vrrGroup}</span>
                    </span>
                </td>
            );
        }
        case 'title':
            return (
                <td style={{ padding: '0.45rem 0.75rem', maxWidth: '280px' }}>
                    <span style={{ color: '#CBD5E1', display: 'block', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }} title={finding.title}>
                        {finding.title}
                    </span>
                </td>
            );
        case 'cves': {
            const cves = finding.cves || [];
            if (cves.length === 0) return <td style={{ padding: '0.45rem 0.75rem', color: '#475569' }}>—</td>;
            const shown = cves.slice(0, 2);
            const rest  = cves.length - shown.length;
            return (
                <td style={{ padding: '0.45rem 0.75rem', minWidth: '160px', maxWidth: '240px' }}>
                    <div style={{ display: 'flex', flexWrap: 'wrap', gap: '0.2rem' }}>
                        {shown.map((cve) => (
                            <span key={cve} style={{ padding: '0.1rem 0.35rem', borderRadius: '0.2rem', background: 'rgba(139,92,246,0.1)', border: '1px solid rgba(139,92,246,0.3)', color: '#A78BFA', fontFamily: 'monospace', fontSize: '0.65rem', fontWeight: '600', whiteSpace: 'nowrap' }}>
                                {cve}
                            </span>
                        ))}
                        {rest > 0 && (
                            <span title={cves.slice(2).join('\n')} style={{ padding: '0.1rem 0.35rem', borderRadius: '0.2rem', background: 'rgba(100,116,139,0.12)', border: '1px solid rgba(100,116,139,0.25)', color: '#64748B', fontFamily: 'monospace', fontSize: '0.65rem', cursor: 'help', whiteSpace: 'nowrap' }}>
                                +{rest} more
                            </span>
                        )}
                    </div>
                </td>
            );
        }
        case 'hostName':
            return (
                <OverrideCell
                    findingId={finding.id}
                    field="hostName"
                    originalValue={finding.hostName}
                    initialOverride={finding.overrides?.hostName ?? null}
                    canWrite={canWrite}
                />
            );
        case 'ipAddress':
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap', color: '#94A3B8', fontFamily: 'monospace', fontSize: '0.72rem' }}>
                    {finding.ipAddress || '—'}
                </td>
            );
        case 'dns':
            return (
                <OverrideCell
                    findingId={finding.id}
                    field="dns"
                    originalValue={finding.dns}
                    initialOverride={finding.overrides?.dns ?? null}
                    canWrite={canWrite}
                />
            );
        case 'dueDate': {
            const color = dueDateColor(finding.dueDate);
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap', fontFamily: 'monospace', fontSize: '0.72rem', fontWeight: '600', color }}>
                    {finding.dueDate || '—'}
                </td>
            );
        }
        case 'slaStatus':
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap', fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: slaColor(finding.slaStatus) }}>
                    {finding.slaStatus || '—'}
                </td>
            );
        case 'buOwnership': {
            const bu      = finding.buOwnership || '';
            const isSteam = bu.toUpperCase().includes('STEAM');
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap' }}>
                    {bu ? (
                        <span
                            title={bu}
                            style={{
                                display: 'inline-block', padding: '0.15rem 0.4rem',
                                borderRadius: '0.25rem',
                                background: isSteam ? 'rgba(14,165,233,0.1)' : 'rgba(245,158,11,0.1)',
                                border: `1px solid ${isSteam ? 'rgba(14,165,233,0.3)' : 'rgba(245,158,11,0.3)'}`,
                                color: isSteam ? '#0EA5E9' : '#F59E0B',
                                fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600',
                            }}
                        >
                            {bu.replace('NTS-AEO-', '')}
                        </span>
                    ) : (
                        <span style={{ color: '#475569' }}>—</span>
                    )}
                </td>
            );
        }
        case 'workflow': {
            const wf = finding.workflow;
            if (!wf || !wf.id) return <td style={{ padding: '0.45rem 0.75rem', color: '#334155' }}>—</td>;
            const ws = workflowStyle(wf.state);
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap' }}>
                    <span
                        title={`${wf.id} · ${wf.state || 'Unknown'} · ${wf.type || ''}`}
                        style={{
                            display: 'inline-flex', alignItems: 'center', gap: '0.3rem',
                            padding: '0.15rem 0.45rem', borderRadius: '0.25rem',
                            background: ws.bg, border: `1px solid ${ws.border}`,
                            fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600',
                            color: ws.text, cursor: 'default',
                        }}
                    >
                        {wf.id}
                        <span style={{ fontSize: '0.58rem', opacity: 0.8, textTransform: 'uppercase', letterSpacing: '0.04em' }}>
                            {wf.state}
                        </span>
                    </span>
                </td>
            );
        }
        case 'lastFoundOn':
            return (
                <td style={{ padding: '0.45rem 0.75rem', whiteSpace: 'nowrap', color: '#64748B', fontFamily: 'monospace', fontSize: '0.72rem' }}>
                    {finding.lastFoundOn || '—'}
                </td>
            );
        case 'note':
            return (
                <td style={{ padding: '0.45rem 0.75rem' }}>
                    <NoteCell findingId={finding.id} initialNote={finding.note} />
                </td>
            );
        default:
            return <td style={{ padding: '0.45rem 0.75rem', color: '#64748B' }}>—</td>;
    }
}

// ---------------------------------------------------------------------------
// Main ReportingPage
// ---------------------------------------------------------------------------
export default function ReportingPage({ filterDate, filterEXC }) {
    const { canWrite } = useAuth();
    const [findings, setFindings]         = useState([]);
    const [total, setTotal]               = useState(null);
    const [syncedAt, setSyncedAt]         = useState(null);
    const [syncStatus, setSyncStatus]     = useState(null);
    const [syncError, setSyncError]       = useState(null);
    const [loading, setLoading]           = useState(false);
    const [syncing, setSyncing]           = useState(false);
    const [statusCounts, setStatusCounts] = useState({ open: 0, closed: 0 });
    const [countsLoading, setCountsLoading] = useState(true);
    const [fpCounts, setFPCounts] = useState({ findingCounts: {}, findingTotal: 0, idCounts: {}, idTotal: 0 });
    const [sort, setSort]                 = useState({ field: 'severity', dir: 'desc' });
    const [columnOrder, setColumnOrder]   = useState(loadColumnOrder);
    const [columnFilters, setColumnFilters] = useState(() =>
        filterDate ? { dueDate: new Set([filterDate]) } : {}
    );
    const [openFilter, setOpenFilter]     = useState(null);
    const filterBtnRefs                   = useRef({});
    const [actionFilter, setActionFilter] = useState(null);
    const [excFilter, setExcFilter]       = useState(filterEXC || null);

    const updateColumns = useCallback((newOrder) => {
        setColumnOrder(newOrder);
        saveColumnOrder(newOrder);
    }, []);

    const applyState = (data) => {
        setTotal(data.total ?? 0);
        setFindings(data.findings || []);
        setSyncedAt(data.synced_at || null);
        setSyncStatus(data.sync_status || null);
        setSyncError(data.error_message || null);
    };

    const fetchCounts = async () => {
        setCountsLoading(true);
        try {
            const res  = await fetch(`${API_BASE}/ivanti/findings/counts`, { credentials: 'include' });
            const data = await res.json();
            if (res.ok) setStatusCounts({ open: data.open ?? 0, closed: data.closed ?? 0 });
        } catch (e) {
            console.error('Error loading status counts:', e);
        } finally {
            setCountsLoading(false);
        }
    };

    const fetchFPWorkflowCounts = async () => {
        try {
            const res  = await fetch(`${API_BASE}/ivanti/findings/fp-workflow-counts`, { credentials: 'include' });
            const data = await res.json();
            if (res.ok) setFPCounts({
                findingCounts: data.findingCounts || {},
                findingTotal:  data.findingTotal  || 0,
                idCounts:      data.idCounts      || {},
                idTotal:       data.idTotal       || 0,
            });
        } catch (e) {
            console.error('Error loading FP workflow counts:', e);
        }
    };

    const fetchFindings = async () => {
        setLoading(true);
        try {
            const res  = await fetch(`${API_BASE}/ivanti/findings`, { credentials: 'include' });
            const data = await res.json();
            if (res.ok) applyState(data);
        } catch (e) {
            console.error('Error loading findings:', e);
        } finally {
            setLoading(false);
        }
    };

    const syncFindings = async () => {
        setSyncing(true);
        try {
            const res  = await fetch(`${API_BASE}/ivanti/findings/sync`, { method: 'POST', credentials: 'include' });
            const data = await res.json();
            if (res.ok) {
                applyState(data);
                fetchCounts();           // refresh counts after sync
                fetchFPWorkflowCounts(); // refresh FP workflow counts after sync
            }
        } catch (e) {
            console.error('Error syncing findings:', e);
        } finally {
            setSyncing(false);
        }
    };

    useEffect(() => {
        fetchFindings();
        fetchCounts();
        fetchFPWorkflowCounts();
    }, []); // eslint-disable-line

    // Set/clear a single column filter
    const setColFilter = useCallback((colKey, vals) => {
        setColumnFilters((prev) => {
            if (!vals) {
                const next = { ...prev };
                delete next[colKey];
                return next;
            }
            return { ...prev, [colKey]: vals };
        });
    }, []);

    // Apply all active filters to produce the visible row set
    const filtered = useMemo(() => {
        let result = findings;

        // Column filters
        const active = Object.entries(columnFilters);
        if (active.length > 0) {
            result = result.filter((f) =>
                active.every(([key, vals]) => {
                    if (!vals || vals.size === 0) return false;
                    const def = COLUMN_DEFS[key];
                    if (def?.multiValue) {
                        return (f[key] || []).some((v) => vals.has(String(v).trim()));
                    }
                    return vals.has(getFilterVal(f, key).trim());
                })
            );
        }

        // Action coverage filter (chart segment click)
        if (actionFilter) {
            result = result.filter((f) => classifyFinding(f) === actionFilter);
        }

        // EXC filter (navigated from home page Archer ticket)
        if (excFilter) {
            const upper = excFilter.toUpperCase();
            result = result.filter((f) => (f.note || '').toUpperCase().includes(upper));
        }

        return result;
    }, [findings, columnFilters, actionFilter, excFilter]);

    // Visible columns in current order
    const visibleCols = columnOrder.filter((c) => c.visible && COLUMN_DEFS[c.key]);

    // Sort filtered results
    const sorted = useMemo(() => [...filtered].sort((a, b) => {
        const av = getVal(a, sort.field);
        const bv = getVal(b, sort.field);
        let cmp = 0;
        if (typeof av === 'number' && typeof bv === 'number') {
            cmp = av - bv;
        } else {
            cmp = String(av).localeCompare(String(bv), undefined, { numeric: true });
        }
        return sort.dir === 'asc' ? cmp : -cmp;
    }), [filtered, sort]);

    const toggleSort = (key) => {
        setSort((prev) =>
            prev.field === key
                ? { field: key, dir: prev.dir === 'asc' ? 'desc' : 'asc' }
                : { field: key, dir: 'asc' }
        );
    };

    const activeFilterCount = Object.keys(columnFilters).length + (actionFilter ? 1 : 0) + (excFilter ? 1 : 0);

    const [exportMenuOpen, setExportMenuOpen] = useState(false);
    const exportBtnRef = useRef(null);

    // Close export menu on outside click
    useEffect(() => {
        if (!exportMenuOpen) return;
        const handler = (e) => {
            if (exportBtnRef.current && !exportBtnRef.current.contains(e.target)) {
                setExportMenuOpen(false);
            }
        };
        document.addEventListener('mousedown', handler);
        return () => document.removeEventListener('mousedown', handler);
    }, [exportMenuOpen]);

    const buildExportRows = useCallback(() => {
        const cols = visibleCols.filter((c) => COLUMN_DEFS[c.key]);
        const headers = cols.map((c) => COLUMN_DEFS[c.key].label);
        const rows = sorted.map((finding) =>
            cols.map((c) => getExportVal(finding, c.key))
        );
        return [headers, ...rows];
    }, [sorted, visibleCols]);

    const exportCSV = useCallback(() => {
        setExportMenuOpen(false);
        const rows = buildExportRows();
        const csvContent = rows.map((row) =>
            row.map((cell) => {
                const s = String(cell ?? '');
                // Quote if it contains comma, double-quote, or newline
                if (s.includes(',') || s.includes('"') || s.includes('\n')) {
                    return `"${s.replace(/"/g, '""')}"`;
                }
                return s;
            }).join(',')
        ).join('\r\n');
        const blob = new Blob(['\uFEFF' + csvContent], { type: 'text/csv;charset=utf-8;' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = `findings-export-${new Date().toISOString().slice(0, 10)}.csv`;
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
        URL.revokeObjectURL(url);
    }, [buildExportRows]);

    const exportXLSX = useCallback(() => {
        setExportMenuOpen(false);
        const rows = buildExportRows();
        const ws = XLSX.utils.aoa_to_sheet(rows);
        // Auto-fit column widths
        const colWidths = rows[0].map((_, ci) =>
            Math.min(60, Math.max(10, ...rows.map((r) => String(r[ci] ?? '').length)))
        );
        ws['!cols'] = colWidths.map((w) => ({ wch: w }));
        const wb = XLSX.utils.book_new();
        XLSX.utils.book_append_sheet(wb, ws, 'Findings');
        XLSX.writeFile(wb, `findings-export-${new Date().toISOString().slice(0, 10)}.xlsx`);
    }, [buildExportRows]);

    const syncedDisplay = syncedAt
        ? `Synced ${new Date(syncedAt.replace(' ', 'T') + 'Z').toLocaleString()}`
        : 'Never synced';

    // -------------------------------------------------------------------------
    // Render
    // -------------------------------------------------------------------------
    return (
        <div style={{ display: 'flex', flexDirection: 'column', gap: '1.5rem' }}>

            {/* ----------------------------------------------------------------
                Panel 1 — Metrics placeholder
            ---------------------------------------------------------------- */}
            <div style={{
                background: 'linear-gradient(135deg, rgba(15,26,46,0.95) 0%, rgba(10,22,40,0.9) 100%)',
                border: '1px solid rgba(245,158,11,0.2)',
                borderLeft: '3px solid #F59E0B',
                borderRadius: '0.5rem',
                padding: '1.5rem',
                boxShadow: '0 4px 16px rgba(0,0,0,0.4)'
            }}>
                <div style={{ display: 'flex', alignItems: 'center', gap: '0.625rem', marginBottom: '1rem' }}>
                    <PieChart style={{ width: '20px', height: '20px', color: '#F59E0B' }} />
                    <h2 style={{ fontFamily: 'monospace', fontSize: '1rem', fontWeight: '600', color: '#F59E0B', textTransform: 'uppercase', letterSpacing: '0.1em', textShadow: '0 0 12px rgba(245,158,11,0.4)', margin: 0 }}>
                        Metric Graphs
                    </h2>
                </div>
                <div style={{ display: 'flex', gap: '3rem', flexWrap: 'wrap', alignItems: 'flex-start' }}>
                    {/* Open vs Closed donut */}
                    <div style={{ flex: '0 0 auto' }}>
                        <div style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.1em', marginBottom: '0.75rem' }}>
                            Open vs Closed
                        </div>
                        <StatusDonut
                            open={statusCounts.open}
                            closed={statusCounts.closed}
                            loading={countsLoading}
                        />
                    </div>

                    {/* Divider */}
                    <div style={{ width: '1px', background: 'rgba(255,255,255,0.06)', alignSelf: 'stretch', flexShrink: 0 }} />

                    {/* Action Coverage donut */}
                    <div style={{ flex: '0 0 auto' }}>
                        <div style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.1em', marginBottom: '0.75rem' }}>
                            Action Coverage
                            {actionFilter && <span style={{ marginLeft: '0.5rem', color: ACTION_DEFS.find(d => d.key === actionFilter)?.color, fontSize: '0.6rem' }}>● filtered</span>}
                        </div>
                        <ActionCoverageDonut
                            findings={findings}
                            activeSegment={actionFilter}
                            onSegmentClick={(key) => {
                                setExcFilter(null);
                                setActionFilter(key);
                            }}
                        />
                    </div>

                    {/* Divider */}
                    <div style={{ width: '1px', background: 'rgba(255,255,255,0.06)', alignSelf: 'stretch', flexShrink: 0 }} />

                    {/* FP Finding Status donut — # of findings per FP workflow state */}
                    <div style={{ flex: '0 0 auto' }}>
                        <div style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.1em', marginBottom: '0.75rem' }}>
                            FP Finding Status
                        </div>
                        <FPWorkflowDonut counts={fpCounts.findingCounts} total={fpCounts.findingTotal} centerLabel="FINDINGS" />
                    </div>

                    {/* Divider */}
                    <div style={{ width: '1px', background: 'rgba(255,255,255,0.06)', alignSelf: 'stretch', flexShrink: 0 }} />

                    {/* FP Workflow Status donut — # of unique FP# ticket IDs per state */}
                    <div style={{ flex: '0 0 auto' }}>
                        <div style={{ fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.1em', marginBottom: '0.75rem' }}>
                            FP Workflow Status
                        </div>
                        <FPWorkflowDonut counts={fpCounts.idCounts} total={fpCounts.idTotal} centerLabel="FP TICKETS" />
                    </div>
                </div>
            </div>

            {/* ----------------------------------------------------------------
                Panel 2 — Findings table
            ---------------------------------------------------------------- */}
            <div style={{
                background: 'linear-gradient(135deg, rgba(15,26,46,0.95) 0%, rgba(10,22,40,0.9) 100%)',
                border: '1px solid rgba(14,165,233,0.2)',
                borderLeft: '3px solid #0EA5E9',
                borderRadius: '0.5rem',
                padding: '1.5rem',
                boxShadow: '0 4px 16px rgba(0,0,0,0.4)'
            }}>
                {/* Panel header */}
                <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'flex-start', marginBottom: '0.5rem' }}>
                    <div>
                        <h2 style={{ fontFamily: 'monospace', fontSize: '1rem', fontWeight: '600', color: '#0EA5E9', textTransform: 'uppercase', letterSpacing: '0.1em', textShadow: '0 0 12px rgba(14,165,233,0.4)', margin: '0 0 4px 0' }}>
                            Host Findings
                        </h2>
                        <div style={{ fontFamily: 'monospace', fontSize: '0.7rem', color: '#475569' }}>
                            {syncedDisplay}
                            {syncStatus === 'success' && total !== null && (
                                <span style={{ marginLeft: '0.75rem', color: '#64748B' }}>
                                    {activeFilterCount > 0 ? `${filtered.length} of ${total}` : total} findings
                                    {activeFilterCount > 0 && (
                                        <span style={{ marginLeft: '0.5rem', color: '#F59E0B' }}>
                                            ({activeFilterCount} filter{activeFilterCount > 1 ? 's' : ''} active)
                                        </span>
                                    )}
                                </span>
                            )}
                        </div>
                    </div>

                    {/* Action buttons */}
                    <div style={{ display: 'flex', gap: '0.5rem', alignItems: 'center' }}>
                        {/* EXC filter badge (from home page navigation) */}
                        {excFilter && (
                            <button
                                onClick={() => setExcFilter(null)}
                                style={{
                                    display: 'flex', alignItems: 'center', gap: '0.375rem',
                                    padding: '0.375rem 0.75rem',
                                    background: 'rgba(245,158,11,0.08)',
                                    border: '1px solid rgba(245,158,11,0.3)',
                                    borderRadius: '0.375rem',
                                    color: '#F59E0B', cursor: 'pointer',
                                    fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                                    letterSpacing: '0.05em'
                                }}
                            >
                                <Filter style={{ width: '11px', height: '11px' }} />
                                {excFilter} ×
                            </button>
                        )}
                        {/* Action coverage filter badge (from chart click) */}
                        {actionFilter && (
                            <button
                                onClick={() => setActionFilter(null)}
                                style={{
                                    display: 'flex', alignItems: 'center', gap: '0.375rem',
                                    padding: '0.375rem 0.75rem',
                                    background: actionFilter === 'fp' ? 'rgba(14,165,233,0.08)' : actionFilter === 'archer' ? 'rgba(245,158,11,0.08)' : 'rgba(239,68,68,0.08)',
                                    border: `1px solid ${actionFilter === 'fp' ? 'rgba(14,165,233,0.3)' : actionFilter === 'archer' ? 'rgba(245,158,11,0.3)' : 'rgba(239,68,68,0.3)'}`,
                                    borderRadius: '0.375rem',
                                    color: actionFilter === 'fp' ? '#0EA5E9' : actionFilter === 'archer' ? '#F59E0B' : '#EF4444',
                                    cursor: 'pointer',
                                    fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                                    letterSpacing: '0.05em'
                                }}
                            >
                                <Filter style={{ width: '11px', height: '11px' }} />
                                {ACTION_DEFS.find(d => d.key === actionFilter)?.label} ×
                            </button>
                        )}
                        {Object.keys(columnFilters).length > 0 && (
                            <button
                                onClick={() => setColumnFilters({})}
                                style={{
                                    display: 'flex', alignItems: 'center', gap: '0.375rem',
                                    padding: '0.375rem 0.75rem',
                                    background: 'rgba(245,158,11,0.08)',
                                    border: '1px solid rgba(245,158,11,0.3)',
                                    borderRadius: '0.375rem',
                                    color: '#F59E0B', cursor: 'pointer',
                                    fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                                    textTransform: 'uppercase', letterSpacing: '0.05em'
                                }}
                            >
                                <Filter style={{ width: '11px', height: '11px' }} />
                                Clear Filters
                            </button>
                        )}
                        {/* Export dropdown */}
                        <div ref={exportBtnRef} style={{ position: 'relative' }}>
                            <button
                                onClick={() => setExportMenuOpen((o) => !o)}
                                disabled={sorted.length === 0}
                                style={{
                                    display: 'flex', alignItems: 'center', gap: '0.375rem',
                                    padding: '0.375rem 0.75rem',
                                    background: 'rgba(16,185,129,0.08)',
                                    border: '1px solid rgba(16,185,129,0.3)',
                                    borderRadius: '0.375rem',
                                    color: '#10B981', cursor: sorted.length === 0 ? 'not-allowed' : 'pointer',
                                    fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                                    textTransform: 'uppercase', letterSpacing: '0.05em',
                                    opacity: sorted.length === 0 ? 0.4 : 1,
                                }}
                            >
                                <Download style={{ width: '11px', height: '11px' }} />
                                Export
                                <ChevronDown style={{ width: '10px', height: '10px', marginLeft: '1px' }} />
                            </button>
                            {exportMenuOpen && (
                                <div style={{
                                    position: 'absolute', top: 'calc(100% + 4px)', right: 0, zIndex: 200,
                                    background: 'rgb(12,22,40)', border: '1px solid rgba(16,185,129,0.3)',
                                    borderRadius: '0.375rem', overflow: 'hidden',
                                    boxShadow: '0 4px 16px rgba(0,0,0,0.5)',
                                    minWidth: '120px',
                                }}>
                                    {[
                                        { label: 'CSV (.csv)', action: exportCSV },
                                        { label: 'Excel (.xlsx)', action: exportXLSX },
                                    ].map(({ label, action }) => (
                                        <button
                                            key={label}
                                            onClick={action}
                                            style={{
                                                display: 'block', width: '100%', textAlign: 'left',
                                                padding: '0.5rem 0.875rem',
                                                background: 'none', border: 'none',
                                                fontFamily: 'monospace', fontSize: '0.73rem', fontWeight: '600',
                                                color: '#10B981', cursor: 'pointer',
                                                textTransform: 'uppercase', letterSpacing: '0.04em',
                                                transition: 'background 0.1s',
                                            }}
                                            onMouseEnter={(e) => e.currentTarget.style.background = 'rgba(16,185,129,0.1)'}
                                            onMouseLeave={(e) => e.currentTarget.style.background = 'none'}
                                        >
                                            {label}
                                        </button>
                                    ))}
                                </div>
                            )}
                        </div>
                        <ColumnManager columnOrder={columnOrder} onChange={updateColumns} />
                        <button
                            onClick={syncFindings}
                            disabled={syncing || loading}
                            style={{
                                display: 'flex', alignItems: 'center', gap: '0.375rem',
                                padding: '0.375rem 0.75rem',
                                background: 'rgba(14,165,233,0.1)',
                                border: '1px solid rgba(14,165,233,0.35)',
                                borderRadius: '0.375rem',
                                color: '#0EA5E9', cursor: 'pointer',
                                fontFamily: 'monospace', fontSize: '0.75rem', fontWeight: '600',
                                textTransform: 'uppercase', letterSpacing: '0.05em',
                                opacity: (syncing || loading) ? 0.6 : 1
                            }}
                        >
                            <RefreshCw style={{ width: '13px', height: '13px', animation: syncing ? 'spin 1s linear infinite' : 'none' }} />
                            {syncing ? 'Syncing…' : 'Sync'}
                        </button>
                    </div>
                </div>

                {/* Error banner */}
                {syncStatus === 'error' && syncError && (
                    <div style={{ display: 'flex', alignItems: 'flex-start', gap: '0.5rem', padding: '0.625rem 0.875rem', background: 'rgba(239,68,68,0.08)', border: '1px solid rgba(239,68,68,0.25)', borderRadius: '0.375rem', marginBottom: '1rem' }}>
                        <AlertCircle style={{ width: '15px', height: '15px', color: '#EF4444', flexShrink: 0, marginTop: '1px' }} />
                        <span style={{ fontSize: '0.75rem', color: '#FCA5A5', fontFamily: 'monospace' }}>{syncError}</span>
                    </div>
                )}

                {/* Content */}
                {loading ? (
                    <div style={{ textAlign: 'center', padding: '3rem 0' }}>
                        <Loader style={{ width: '28px', height: '28px', color: '#0EA5E9', animation: 'spin 1s linear infinite', margin: '0 auto 0.75rem' }} />
                        <p style={{ fontFamily: 'monospace', fontSize: '0.75rem', color: '#475569' }}>Loading findings…</p>
                    </div>
                ) : syncStatus === 'never' ? (
                    <div style={{ textAlign: 'center', padding: '3rem 0' }}>
                        <p style={{ fontFamily: 'monospace', fontSize: '0.75rem', color: '#475569' }}>Click Sync to load findings data</p>
                    </div>
                ) : (
                    <div style={{ overflowX: 'auto', overflowY: 'auto', maxHeight: 'calc(100vh - 420px)', minHeight: '200px', marginTop: '0.75rem' }}>
                        <table style={{ width: '100%', borderCollapse: 'collapse', fontSize: '0.75rem', fontFamily: 'sans-serif' }}>
                            <thead>
                                <tr style={{ borderBottom: '1px solid rgba(14,165,233,0.2)' }}>
                                    {visibleCols.map((col) => {
                                        const def        = COLUMN_DEFS[col.key];
                                        const active     = sort.field === col.key;
                                        const isFiltered = !!columnFilters[col.key];
                                        return (
                                            <th
                                                key={col.key}
                                                onClick={def?.sortable ? () => toggleSort(col.key) : undefined}
                                                style={{
                                                    padding: '0.5rem 0.75rem', textAlign: 'left',
                                                    fontFamily: 'monospace', fontSize: '0.68rem', fontWeight: '600',
                                                    color: active ? '#0EA5E9' : '#64748B',
                                                    textTransform: 'uppercase', letterSpacing: '0.08em',
                                                    whiteSpace: 'nowrap',
                                                    cursor: def?.sortable ? 'pointer' : 'default',
                                                    userSelect: 'none',
                                                    background: 'rgb(10, 20, 36)',
                                                    position: 'sticky', top: 0, zIndex: 10,
                                                    boxShadow: '0 1px 0 rgba(14,165,233,0.2)',
                                                }}
                                            >
                                                <span style={{ display: 'inline-flex', alignItems: 'center' }}>
                                                    {def?.label || col.key}
                                                    {def?.sortable && <SortIcon colKey={col.key} sort={sort} />}
                                                    {def?.filterable && (
                                                        <button
                                                            ref={(el) => { filterBtnRefs.current[col.key] = el; }}
                                                            onClick={(e) => {
                                                                e.stopPropagation();
                                                                setOpenFilter(openFilter === col.key ? null : col.key);
                                                            }}
                                                            title={`Filter ${def.label}`}
                                                            style={{
                                                                background: 'none', border: 'none',
                                                                cursor: 'pointer', padding: '1px 1px 1px 3px',
                                                                color: isFiltered ? '#F59E0B' : '#334155',
                                                                lineHeight: 1, flexShrink: 0,
                                                                transition: 'color 0.15s',
                                                            }}
                                                        >
                                                            <Filter style={{ width: '10px', height: '10px' }} />
                                                        </button>
                                                    )}
                                                </span>
                                            </th>
                                        );
                                    })}
                                </tr>
                            </thead>
                            <tbody>
                                {sorted.map((finding, idx) => {
                                    const rowBg = idx % 2 === 0 ? 'rgba(15,26,46,0.4)' : 'rgba(10,18,32,0.4)';
                                    return (
                                        <tr
                                            key={finding.id}
                                            style={{ borderBottom: '1px solid rgba(255,255,255,0.04)', background: rowBg }}
                                            onMouseEnter={(e) => e.currentTarget.style.background = 'rgba(14,165,233,0.05)'}
                                            onMouseLeave={(e) => e.currentTarget.style.background = rowBg}
                                        >
                                            {visibleCols.map((col) => (
                                                <TableCell key={col.key} colKey={col.key} finding={finding} canWrite={canWrite()} />
                                            ))}
                                        </tr>
                                    );
                                })}
                                {sorted.length === 0 && (
                                    <tr>
                                        <td colSpan={visibleCols.length} style={{ textAlign: 'center', padding: '2rem', color: '#475569', fontFamily: 'monospace', fontSize: '0.75rem' }}>
                                            {activeFilterCount > 0 ? 'No findings match the current filters' : 'No findings found'}
                                        </td>
                                    </tr>
                                )}
                            </tbody>
                        </table>
                    </div>
                )}
            </div>

            {/* Filter dropdown — rendered via portal at document.body */}
            {openFilter && COLUMN_DEFS[openFilter]?.filterable && (
                <FilterDropdown
                    anchorEl={filterBtnRefs.current[openFilter]}
                    colKey={openFilter}
                    findings={findings}
                    activeFilter={columnFilters[openFilter] || null}
                    onFilterChange={(vals) => setColFilter(openFilter, vals)}
                    onClose={() => setOpenFilter(null)}
                />
            )}
        </div>
    );
}