Add aggregated burndown forecast to CCP Metrics overview page

backend/__tests__/vcl-aggregated-burndown.property.test.js

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+/**
+ * Property-Based Tests: VCL Aggregated Burndown
+ *
+ * Feature: vcl-aggregated-burndown
+ *
+ * Tests the pure helper functions `deduplicateByHostname` and `computeAggregatedBurndown`
+ * from `backend/helpers/vclHelpers.js`.
+ *
+ * Validates: Requirements 1.5, 1.6, 1.7, 2.2, 2.3, 2.4, 2.5, 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.4
+ */
+
+const fc = require('fast-check');
+
+// Mock db pool before importing anything
+jest.mock('../db', () => ({
+    query: jest.fn(() => Promise.resolve({ rows: [], rowCount: 0 })),
+    connect: jest.fn(() => Promise.resolve({
+        query: jest.fn(() => Promise.resolve({ rows: [], rowCount: 0 })),
+        release: jest.fn(),
+    })),
+}));
+
+jest.mock('../helpers/auditLog', () => jest.fn());
+jest.mock('../helpers/ivantiApi', () => ({
+    ivantiFormPost: jest.fn(),
+    ivantiPost: jest.fn(),
+}));
+
+const {
+    deduplicateByHostname,
+    computeAggregatedBurndown,
+} = require('../helpers/vclHelpers');
+
+// --- Generators ---
+
+const hostnameArb = fc.stringMatching(/^[a-zA-Z0-9._-]+$/, { minLength: 1, maxLength: 20 });
+
+const validDateArb = fc.record({
+    year: fc.integer({ min: 2020, max: 2030 }),
+    month: fc.integer({ min: 1, max: 12 }),
+    day: fc.integer({ min: 1, max: 28 }),
+}).map(({ year, month, day }) =>
+    `${year}-${String(month).padStart(2, '0')}-${String(day).padStart(2, '0')}`
+);
+
+const verticalCodeArb = fc.constantFrom('NTS_AEO', 'SDIT_CISO', 'TSI', 'SR', 'AllOthers');
+
+const deviceArb = fc.record({
+    hostname: hostnameArb,
+    resolution_date: fc.oneof(fc.constant(null), validDateArb),
+    vertical: verticalCodeArb,
+});
+
+// Generator for items that may have duplicate hostnames (for deduplication testing)
+const duplicateItemsArb = fc.array(
+    fc.record({
+        hostname: fc.constantFrom('srv-001', 'srv-002', 'srv-003', 'srv-004', 'srv-005'),
+        resolution_date: fc.oneof(fc.constant(null), validDateArb),
+        vertical: verticalCodeArb,
+    }),
+    { minLength: 0, maxLength: 30 }
+);
+
+// --- Property 1: Partition Invariant ---
+
+describe('Feature: vcl-aggregated-burndown, Property 1: Partition Invariant', () => {
+    /**
+     * For any array of device objects passed to computeAggregatedBurndown,
+     * blockers + with_dates = total.
+     *
+     * **Validates: Requirements 2.2**
+     */
+    it('blockers + with_dates = total for any input', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+                    expect(result.blockers + result.with_dates).toBe(result.total);
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 2: Monthly Bucket Conservation ---
+
+describe('Feature: vcl-aggregated-burndown, Property 2: Monthly Bucket Conservation', () => {
+    /**
+     * For any array of device objects, the sum of all values in monthly
+     * must equal with_dates.
+     *
+     * **Validates: Requirements 2.3, 1.5**
+     */
+    it('sum of monthly values = with_dates', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+                    const monthlySum = Object.values(result.monthly).reduce((s, v) => s + v, 0);
+                    expect(monthlySum).toBe(result.with_dates);
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 3: Chronological Monthly Ordering ---
+
+describe('Feature: vcl-aggregated-burndown, Property 3: Chronological Monthly Ordering', () => {
+    /**
+     * For any array of device objects, the keys of monthly must be in
+     * ascending chronological order (lexicographic sort of YYYY-MM strings).
+     *
+     * **Validates: Requirements 2.4**
+     */
+    it('monthly keys are in ascending chronological order', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+                    const keys = Object.keys(result.monthly);
+                    for (let i = 1; i < keys.length; i++) {
+                        expect(keys[i - 1] < keys[i]).toBe(true);
+                    }
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 4: Cumulative Projection Consistency ---
+
+describe('Feature: vcl-aggregated-burndown, Property 4: Cumulative Projection Consistency', () => {
+    /**
+     * For any array of device objects, projection[month].remaining =
+     * total - (cumulative sum of monthly[m] for all m <= month).
+     *
+     * **Validates: Requirements 2.5**
+     */
+    it('projection remaining = total - cumulative remediated', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+                    const months = Object.keys(result.monthly);
+                    let cumulative = 0;
+                    for (const month of months) {
+                        cumulative += result.monthly[month];
+                        expect(result.projection[month].remediated).toBe(result.monthly[month]);
+                        expect(result.projection[month].remaining).toBe(result.total - cumulative);
+                    }
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 5: Projected Clear Date Logic ---
+
+describe('Feature: vcl-aggregated-burndown, Property 5: Projected Clear Date Logic', () => {
+    /**
+     * If blockers > 0, projected_clear_date must be null.
+     * If blockers = 0 and with_dates > 0, projected_clear_date must equal the last month key.
+     *
+     * **Validates: Requirements 1.7**
+     */
+    it('null when blockers > 0, last month key when blockers = 0 and with_dates > 0', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+                    if (result.blockers > 0) {
+                        expect(result.projected_clear_date).toBeNull();
+                    } else if (result.with_dates > 0) {
+                        const months = Object.keys(result.monthly);
+                        expect(result.projected_clear_date).toBe(months[months.length - 1]);
+                    } else {
+                        // total = 0 case
+                        expect(result.projected_clear_date).toBeNull();
+                    }
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 6: Hostname Deduplication with Earliest Date ---
+
+describe('Feature: vcl-aggregated-burndown, Property 6: Hostname Deduplication with Earliest Date', () => {
+    /**
+     * For any array of items where the same hostname appears multiple times,
+     * deduplicateByHostname produces exactly one entry per unique hostname,
+     * and that entry's resolution_date is the earliest non-null date (or null if all null).
+     *
+     * **Validates: Requirements 1.6**
+     */
+    it('one entry per hostname with earliest non-null date', () => {
+        fc.assert(
+            fc.property(
+                duplicateItemsArb,
+                (items) => {
+                    const result = deduplicateByHostname(items);
+
+                    // One entry per unique hostname
+                    const uniqueHostnames = new Set(items.map(i => i.hostname));
+                    expect(result.length).toBe(uniqueHostnames.size);
+
+                    // Each result hostname appears exactly once
+                    const resultHostnames = result.map(r => r.hostname);
+                    expect(new Set(resultHostnames).size).toBe(result.length);
+
+                    // For each hostname, verify the date is the earliest non-null
+                    for (const entry of result) {
+                        const allForHost = items.filter(i => i.hostname === entry.hostname);
+                        const nonNullDates = allForHost
+                            .map(i => i.resolution_date)
+                            .filter(d => d != null);
+
+                        if (nonNullDates.length === 0) {
+                            expect(entry.resolution_date).toBeNull();
+                        } else {
+                            const earliest = nonNullDates.sort()[0];
+                            expect(entry.resolution_date).toBe(earliest);
+                        }
+                    }
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 7: Aggregation Consistency with Per-Vertical Computation ---
+
+describe('Feature: vcl-aggregated-burndown, Property 7: Aggregation Consistency with Per-Vertical Computation', () => {
+    /**
+     * Aggregated total = sum of per-vertical totals.
+     * Aggregated blockers = sum of per-vertical blockers.
+     * Aggregated with_dates = sum of per-vertical with_dates.
+     *
+     * **Validates: Requirements 4.1, 4.2, 4.3, 4.4**
+     */
+    it('aggregated totals = sum of per-vertical totals', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+
+                    const sumTotal = result.by_vertical.reduce((s, v) => s + v.total, 0);
+                    const sumBlockers = result.by_vertical.reduce((s, v) => s + v.blockers, 0);
+                    const sumWithDates = result.by_vertical.reduce((s, v) => s + v.with_dates, 0);
+
+                    expect(sumTotal).toBe(result.total);
+                    expect(sumBlockers).toBe(result.blockers);
+                    expect(sumWithDates).toBe(result.with_dates);
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});
+
+// --- Property 8: By-Vertical Sorting and Filtering ---
+
+describe('Feature: vcl-aggregated-burndown, Property 8: By-Vertical Sorting and Filtering', () => {
+    /**
+     * by_vertical is sorted descending by total, contains no zero-total entries,
+     * and the sum of all by_vertical[i].total equals the overall total.
+     *
+     * **Validates: Requirements 5.1, 5.2, 5.4**
+     */
+    it('sorted descending by total, no zero entries, sum = total', () => {
+        fc.assert(
+            fc.property(
+                fc.array(deviceArb, { minLength: 0, maxLength: 50 }),
+                (devices) => {
+                    const result = computeAggregatedBurndown(devices);
+
+                    // Sorted descending by total
+                    for (let i = 1; i < result.by_vertical.length; i++) {
+                        expect(result.by_vertical[i - 1].total).toBeGreaterThanOrEqual(result.by_vertical[i].total);
+                    }
+
+                    // No zero-total entries
+                    for (const v of result.by_vertical) {
+                        expect(v.total).toBeGreaterThan(0);
+                    }
+
+                    // Sum = overall total
+                    const sum = result.by_vertical.reduce((s, v) => s + v.total, 0);
+                    expect(sum).toBe(result.total);
+                }
+            ),
+            { numRuns: 100 }
+        );
+    });
+});

backend/__tests__/vcl-aggregated-burndown.test.js

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+/**
+ * Unit and Integration Tests: VCL Aggregated Burndown
+ *
+ * Feature: vcl-aggregated-burndown
+ *
+ * Tests cover:
+ * - deduplicateByHostname edge cases
+ * - computeAggregatedBurndown edge cases
+ * - GET /burndown endpoint with mocked DB
+ * - Empty DB returns zero/empty response
+ * - All-blocker scenario
+ * - Auth middleware enforcement
+ */
+
+const http = require('http');
+const express = require('express');
+
+// Mock auth middleware
+jest.mock('../middleware/auth', () => ({
+    requireAuth: () => (req, res, next) => {
+        req.user = { id: 1, username: 'testuser', group: 'Admin' };
+        next();
+    },
+    requireGroup: () => (req, res, next) => next(),
+}));
+
+jest.mock('../helpers/auditLog', () => jest.fn());
+jest.mock('../helpers/ivantiApi', () => ({
+    ivantiFormPost: jest.fn(),
+    ivantiPost: jest.fn(),
+}));
+
+// Mock driftChecker
+jest.mock('../helpers/driftChecker', () => ({
+    loadConfig: jest.fn(() => ({})),
+    compareSchemaToDrift: jest.fn(() => null),
+    reconcileConfig: jest.fn(() => ({ changes: [] })),
+}));
+
+const mockPool = {
+    query: jest.fn(() => Promise.resolve({ rows: [], rowCount: 0 })),
+    connect: jest.fn(() => Promise.resolve({
+        query: jest.fn(() => Promise.resolve({ rows: [], rowCount: 0 })),
+        release: jest.fn(),
+    })),
+};
+jest.mock('../db', () => mockPool);
+
+const {
+    deduplicateByHostname,
+    computeAggregatedBurndown,
+} = require('../helpers/vclHelpers');
+
+const { createVCLMultiVerticalRouter } = require('../routes/vclMultiVertical');
+
+// --- HTTP helper ---
+
+function request(server, method, path, body) {
+    return new Promise((resolve, reject) => {
+        const addr = server.address();
+        const options = {
+            hostname: '127.0.0.1',
+            port: addr.port,
+            path,
+            method,
+            headers: { 'Content-Type': 'application/json' },
+        };
+
+        const req = http.request(options, (res) => {
+            const chunks = [];
+            res.on('data', (chunk) => chunks.push(chunk));
+            res.on('end', () => {
+                const rawBody = Buffer.concat(chunks).toString();
+                let json;
+                try { json = JSON.parse(rawBody); } catch (e) { json = null; }
+                resolve({ statusCode: res.statusCode, body: json });
+            });
+        });
+
+        req.on('error', reject);
+        if (body) req.write(JSON.stringify(body));
+        req.end();
+    });
+}
+
+// --- Setup ---
+
+let app, server;
+
+beforeAll((done) => {
+    app = express();
+    app.use(express.json());
+
+    const mockUpload = { array: () => (req, res, next) => next() };
+    const router = createVCLMultiVerticalRouter(mockUpload);
+    app.use('/api/compliance/vcl-multi', router);
+
+    server = app.listen(0, '127.0.0.1', done);
+});
+
+afterAll((done) => {
+    server.close(done);
+});
+
+beforeEach(() => {
+    mockPool.query.mockReset();
+    mockPool.connect.mockReset();
+    mockPool.query.mockResolvedValue({ rows: [], rowCount: 0 });
+});
+
+// --- deduplicateByHostname unit tests ---
+
+describe('deduplicateByHostname', () => {
+    it('returns empty array for empty input', () => {
+        expect(deduplicateByHostname([])).toEqual([]);
+    });
+
+    it('passes through single item unchanged', () => {
+        const items = [{ hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' }];
+        const result = deduplicateByHostname(items);
+        expect(result).toEqual([{ hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' }]);
+    });
+
+    it('deduplicates by hostname keeping earliest non-null date', () => {
+        const items = [
+            { hostname: 'srv-001', resolution_date: '2026-08-15', vertical: 'NTS_AEO' },
+            { hostname: 'srv-001', resolution_date: '2026-06-01', vertical: 'SDIT_CISO' },
+            { hostname: 'srv-001', resolution_date: '2026-07-10', vertical: 'TSI' },
+        ];
+        const result = deduplicateByHostname(items);
+        expect(result).toHaveLength(1);
+        expect(result[0].hostname).toBe('srv-001');
+        expect(result[0].resolution_date).toBe('2026-06-01');
+    });
+
+    it('returns null date when all entries for a hostname have null dates', () => {
+        const items = [
+            { hostname: 'srv-001', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-001', resolution_date: null, vertical: 'SDIT_CISO' },
+        ];
+        const result = deduplicateByHostname(items);
+        expect(result).toHaveLength(1);
+        expect(result[0].resolution_date).toBeNull();
+    });
+
+    it('picks earliest non-null date even when some entries are null', () => {
+        const items = [
+            { hostname: 'srv-001', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-001', resolution_date: '2026-09-01', vertical: 'SDIT_CISO' },
+            { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'TSI' },
+        ];
+        const result = deduplicateByHostname(items);
+        expect(result).toHaveLength(1);
+        expect(result[0].resolution_date).toBe('2026-06-15');
+    });
+
+    it('preserves vertical from the first entry', () => {
+        const items = [
+            { hostname: 'srv-001', resolution_date: '2026-08-01', vertical: 'NTS_AEO' },
+            { hostname: 'srv-001', resolution_date: '2026-06-01', vertical: 'SDIT_CISO' },
+        ];
+        const result = deduplicateByHostname(items);
+        expect(result[0].vertical).toBe('NTS_AEO');
+    });
+});
+
+// --- computeAggregatedBurndown unit tests ---
+
+describe('computeAggregatedBurndown', () => {
+    it('returns zero/empty for empty input', () => {
+        const result = computeAggregatedBurndown([]);
+        expect(result.total).toBe(0);
+        expect(result.blockers).toBe(0);
+        expect(result.with_dates).toBe(0);
+        expect(result.monthly).toEqual({});
+        expect(result.projection).toEqual({});
+        expect(result.projected_clear_date).toBeNull();
+        expect(result.by_vertical).toEqual([]);
+    });
+
+    it('all blockers — with_dates=0, monthly={}, projected_clear_date=null', () => {
+        const devices = [
+            { hostname: 'srv-001', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-002', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-003', resolution_date: null, vertical: 'SDIT_CISO' },
+        ];
+        const result = computeAggregatedBurndown(devices);
+        expect(result.total).toBe(3);
+        expect(result.blockers).toBe(3);
+        expect(result.with_dates).toBe(0);
+        expect(result.monthly).toEqual({});
+        expect(result.projected_clear_date).toBeNull();
+    });
+
+    it('single device with date — correct monthly bucket and projection', () => {
+        const devices = [
+            { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' },
+        ];
+        const result = computeAggregatedBurndown(devices);
+        expect(result.total).toBe(1);
+        expect(result.blockers).toBe(0);
+        expect(result.with_dates).toBe(1);
+        expect(result.monthly).toEqual({ '2026-06': 1 });
+        expect(result.projection).toEqual({ '2026-06': { remediated: 1, remaining: 0 } });
+        expect(result.projected_clear_date).toBe('2026-06');
+    });
+
+    it('mixed blockers and in-progress — projected_clear_date is null', () => {
+        const devices = [
+            { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' },
+            { hostname: 'srv-002', resolution_date: null, vertical: 'NTS_AEO' },
+        ];
+        const result = computeAggregatedBurndown(devices);
+        expect(result.total).toBe(2);
+        expect(result.blockers).toBe(1);
+        expect(result.with_dates).toBe(1);
+        expect(result.projected_clear_date).toBeNull();
+    });
+
+    it('multiple months — correct cumulative projection', () => {
+        const devices = [
+            { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' },
+            { hostname: 'srv-002', resolution_date: '2026-06-20', vertical: 'NTS_AEO' },
+            { hostname: 'srv-003', resolution_date: '2026-07-10', vertical: 'SDIT_CISO' },
+            { hostname: 'srv-004', resolution_date: '2026-08-01', vertical: 'TSI' },
+        ];
+        const result = computeAggregatedBurndown(devices);
+        expect(result.total).toBe(4);
+        expect(result.monthly).toEqual({ '2026-06': 2, '2026-07': 1, '2026-08': 1 });
+        expect(result.projection['2026-06'].remaining).toBe(2); // 4 - 2
+        expect(result.projection['2026-07'].remaining).toBe(1); // 4 - 3
+        expect(result.projection['2026-08'].remaining).toBe(0); // 4 - 4
+        expect(result.projected_clear_date).toBe('2026-08');
+    });
+
+    it('by_vertical sorted descending by total, omits zero-total verticals', () => {
+        const devices = [
+            { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'TSI' },
+            { hostname: 'srv-002', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-003', resolution_date: null, vertical: 'NTS_AEO' },
+            { hostname: 'srv-004', resolution_date: '2026-07-01', vertical: 'NTS_AEO' },
+        ];
+        const result = computeAggregatedBurndown(devices);
+        expect(result.by_vertical[0].vertical).toBe('NTS_AEO');
+        expect(result.by_vertical[0].total).toBe(3);
+        expect(result.by_vertical[1].vertical).toBe('TSI');
+        expect(result.by_vertical[1].total).toBe(1);
+    });
+});
+
+// --- GET /burndown endpoint tests ---
+
+describe('GET /api/compliance/vcl-multi/burndown', () => {
+    it('returns zero/empty response when no active devices exist', async () => {
+        mockPool.query.mockResolvedValueOnce({ rows: [] });
+
+        const res = await request(server, 'GET', '/api/compliance/vcl-multi/burndown');
+
+        expect(res.statusCode).toBe(200);
+        expect(res.body.total_non_compliant).toBe(0);
+        expect(res.body.blockers).toBe(0);
+        expect(res.body.with_dates).toBe(0);
+        expect(res.body.monthly_forecast).toEqual({});
+        expect(res.body.projected_clear_date).toBeNull();
+        expect(res.body.by_vertical).toEqual([]);
+    });
+
+    it('returns correct burndown data with mocked DB rows', async () => {
+        mockPool.query.mockResolvedValueOnce({
+            rows: [
+                { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' },
+                { hostname: 'srv-002', resolution_date: '2026-07-01', vertical: 'NTS_AEO' },
+                { hostname: 'srv-003', resolution_date: null, vertical: 'SDIT_CISO' },
+                { hostname: 'srv-001', resolution_date: '2026-08-01', vertical: 'SDIT_CISO' }, // duplicate hostname
+            ],
+        });
+
+        const res = await request(server, 'GET', '/api/compliance/vcl-multi/burndown');
+
+        expect(res.statusCode).toBe(200);
+        // srv-001 deduplicated: earliest date is 2026-06-15
+        expect(res.body.total_non_compliant).toBe(3); // srv-001, srv-002, srv-003
+        expect(res.body.blockers).toBe(1); // srv-003
+        expect(res.body.with_dates).toBe(2); // srv-001, srv-002
+        expect(res.body.monthly_forecast['2026-06']).toBe(1);
+        expect(res.body.monthly_forecast['2026-07']).toBe(1);
+        expect(res.body.projected_clear_date).toBeNull(); // blockers > 0
+    });
+
+    it('returns all-blocker response correctly', async () => {
+        mockPool.query.mockResolvedValueOnce({
+            rows: [
+                { hostname: 'srv-001', resolution_date: null, vertical: 'NTS_AEO' },
+                { hostname: 'srv-002', resolution_date: null, vertical: 'SDIT_CISO' },
+            ],
+        });
+
+        const res = await request(server, 'GET', '/api/compliance/vcl-multi/burndown');
+
+        expect(res.statusCode).toBe(200);
+        expect(res.body.total_non_compliant).toBe(2);
+        expect(res.body.blockers).toBe(2);
+        expect(res.body.with_dates).toBe(0);
+        expect(res.body.monthly_forecast).toEqual({});
+        expect(res.body.projected_clear_date).toBeNull();
+    });
+
+    it('returns 500 on database error', async () => {
+        mockPool.query.mockRejectedValueOnce(new Error('Connection refused'));
+
+        const res = await request(server, 'GET', '/api/compliance/vcl-multi/burndown');
+
+        expect(res.statusCode).toBe(500);
+        expect(res.body.error).toBe('Database error');
+    });
+
+    it('response shape matches API contract', async () => {
+        mockPool.query.mockResolvedValueOnce({
+            rows: [
+                { hostname: 'srv-001', resolution_date: '2026-06-15', vertical: 'NTS_AEO' },
+            ],
+        });
+
+        const res = await request(server, 'GET', '/api/compliance/vcl-multi/burndown');
+
+        expect(res.statusCode).toBe(200);
+        expect(res.body).toHaveProperty('total_non_compliant');
+        expect(res.body).toHaveProperty('blockers');
+        expect(res.body).toHaveProperty('with_dates');
+        expect(res.body).toHaveProperty('monthly_forecast');
+        expect(res.body).toHaveProperty('projected_clear_date');
+        expect(res.body).toHaveProperty('by_vertical');
+        expect(Array.isArray(res.body.by_vertical)).toBe(true);
+    });
+});
+
+// --- Auth enforcement test ---
+
+describe('GET /burndown — auth enforcement', () => {
+    it('returns 401 when auth middleware rejects', async () => {
+        // Create a separate app with rejecting auth
+        const rejectApp = express();
+        rejectApp.use(express.json());
+
+        // Override requireAuth to reject
+        jest.resetModules();
+        jest.doMock('../middleware/auth', () => ({
+            requireAuth: () => (req, res, next) => {
+                res.status(401).json({ error: 'Authentication required' });
+            },
+            requireGroup: () => (req, res, next) => next(),
+        }));
+
+        const { createVCLMultiVerticalRouter: createRouter } = require('../routes/vclMultiVertical');
+        const mockUpload = { array: () => (req, res, next) => next() };
+        const router = createRouter(mockUpload);
+        rejectApp.use('/api/compliance/vcl-multi', router);
+
+        const rejectServer = await new Promise((resolve) => {
+            const s = rejectApp.listen(0, '127.0.0.1', () => resolve(s));
+        });
+
+        try {
+            const res = await request(rejectServer, 'GET', '/api/compliance/vcl-multi/burndown');
+            expect(res.statusCode).toBe(401);
+            expect(res.body.error).toBe('Authentication required');
+        } finally {
+            await new Promise((resolve) => rejectServer.close(resolve));
+        }
+    });
+});

backend/helpers/vclHelpers.js

@@ -278,6 +278,116 @@ function computeVerticalBurndown(items) {
     };
 }
 
+/**
+ * Deduplicates devices by hostname, keeping the earliest non-null resolution_date.
+ * A device appearing in multiple metrics counts once.
+ *
+ * @param {Array<{ hostname: string, resolution_date: string|null, vertical: string }>} items
+ * @returns {Array<{ hostname: string, resolution_date: string|null, vertical: string }>}
+ */
+function deduplicateByHostname(items) {
+    const map = {};
+    for (const item of items) {
+        const key = item.hostname;
+        if (!map[key]) {
+            map[key] = { hostname: item.hostname, resolution_date: item.resolution_date || null, vertical: item.vertical };
+        } else {
+            // Keep the earliest non-null resolution_date
+            const existing = map[key];
+            if (item.resolution_date != null) {
+                if (existing.resolution_date == null || item.resolution_date < existing.resolution_date) {
+                    existing.resolution_date = item.resolution_date;
+                }
+            }
+        }
+    }
+    return Object.values(map);
+}
+
+/**
+ * Computes aggregated burndown from a deduplicated array of device objects.
+ * Each device has { hostname, resolution_date, vertical }.
+ *
+ * @param {Array<{ hostname: string, resolution_date: string|null, vertical: string }>} devices
+ * @returns {{
+ *   total: number,
+ *   blockers: number,
+ *   with_dates: number,
+ *   monthly: Object<string, number>,
+ *   projection: Object<string, { remediated: number, remaining: number }>,
+ *   projected_clear_date: string|null,
+ *   by_vertical: Array<{ vertical: string, total: number, blockers: number, with_dates: number }>
+ * }}
+ */
+function computeAggregatedBurndown(devices) {
+    const total = devices.length;
+    const withDates = devices.filter(d => d.resolution_date != null);
+    const blockerDevices = devices.filter(d => d.resolution_date == null);
+    const blockers = blockerDevices.length;
+    const with_dates = withDates.length;
+
+    // Bucket by month (YYYY-MM)
+    const monthly = {};
+    for (const device of withDates) {
+        const dateStr = typeof device.resolution_date === 'string'
+            ? device.resolution_date
+            : device.resolution_date.toISOString().slice(0, 10);
+        const month = dateStr.slice(0, 7);
+        monthly[month] = (monthly[month] || 0) + 1;
+    }
+
+    // Sort monthly keys chronologically
+    const sortedMonths = Object.keys(monthly).sort();
+    const sortedMonthly = {};
+    for (const m of sortedMonths) {
+        sortedMonthly[m] = monthly[m];
+    }
+
+    // Cumulative projection
+    let remaining = total;
+    const projection = {};
+    for (const month of sortedMonths) {
+        remaining -= sortedMonthly[month];
+        projection[month] = { remediated: sortedMonthly[month], remaining };
+    }
+
+    // Projected clear date
+    let projected_clear_date = null;
+    if (blockers === 0 && sortedMonths.length > 0) {
+        projected_clear_date = sortedMonths[sortedMonths.length - 1];
+    }
+
+    // Per-vertical breakdown
+    const verticalMap = {};
+    for (const device of devices) {
+        const v = device.vertical;
+        if (!verticalMap[v]) {
+            verticalMap[v] = { vertical: v, total: 0, blockers: 0, with_dates: 0 };
+        }
+        verticalMap[v].total++;
+        if (device.resolution_date == null) {
+            verticalMap[v].blockers++;
+        } else {
+            verticalMap[v].with_dates++;
+        }
+    }
+
+    // Sort descending by total, filter out zero-total entries
+    const by_vertical = Object.values(verticalMap)
+        .filter(v => v.total > 0)
+        .sort((a, b) => b.total - a.total);
+
+    return {
+        total,
+        blockers,
+        with_dates,
+        monthly: sortedMonthly,
+        projection,
+        projected_clear_date,
+        by_vertical,
+    };
+}
+
 module.exports = {
     truncateText,
     validateRemediationPlan,
@@ -292,4 +402,6 @@ module.exports = {
     mapColumnHeaders,
     parseVerticalFilename,
     computeVerticalBurndown,
+    deduplicateByHostname,
+    computeAggregatedBurndown,
 };

backend/routes/vclMultiVertical.js

@@ -7,7 +7,7 @@ const fs = require('fs');
 const { spawn } = require('child_process');
 const pool = require('../db');
 const { requireAuth, requireGroup } = require('../middleware/auth');
-const { parseVerticalFilename, computeVerticalBurndown, isValidDateString, categorizeNonCompliant } = require('../helpers/vclHelpers');
+const { parseVerticalFilename, computeVerticalBurndown, isValidDateString, categorizeNonCompliant, deduplicateByHostname, computeAggregatedBurndown } = require('../helpers/vclHelpers');
 const logAudit = require('../helpers/auditLog');
 
 const PARSER_SCRIPT = path.join(__dirname, '../scripts/parse_compliance_xlsx.py');
@@ -1240,6 +1240,54 @@ function createVCLMultiVerticalRouter(upload) {
         }
     });
 
+    // -----------------------------------------------------------------------
+    // GET /burndown — Aggregated cross-vertical burndown forecast
+    // -----------------------------------------------------------------------
+
+    /**
+     * GET /burndown
+     * Returns aggregated burndown forecast across all verticals.
+     * Deduplicates devices by hostname (earliest non-null resolution_date).
+     *
+     * @method GET
+     * @route /burndown
+     *
+     * @response 200
+     *   {
+     *     total_non_compliant: number,
+     *     blockers: number,
+     *     with_dates: number,
+     *     monthly_forecast: Object<string, number>,
+     *     projected_clear_date: string|null,
+     *     by_vertical: Array<{ vertical: string, total: number, blockers: number, with_dates: number }>
+     *   }
+     * @response 500 { error: string }
+     */
+    router.get('/burndown', async (req, res) => {
+        try {
+            const { rows } = await pool.query(
+                `SELECT hostname, resolution_date, vertical
+                 FROM compliance_items
+                 WHERE vertical IS NOT NULL AND status = 'active'`
+            );
+
+            const devices = deduplicateByHostname(rows);
+            const burndown = computeAggregatedBurndown(devices);
+
+            res.json({
+                total_non_compliant: burndown.total,
+                blockers: burndown.blockers,
+                with_dates: burndown.with_dates,
+                monthly_forecast: burndown.monthly,
+                projected_clear_date: burndown.projected_clear_date,
+                by_vertical: burndown.by_vertical,
+            });
+        } catch (err) {
+            console.error('[VCL Multi] GET /burndown error:', err.message);
+            res.status(500).json({ error: 'Database error' });
+        }
+    });
+
     return router;
 }
 

frontend/src/components/pages/CCPMetricsPage.js

@@ -1,7 +1,7 @@
 import React, { useState, useEffect, useCallback } from 'react';
 import { Upload, Building2, ChevronLeft, Loader, AlertCircle, BarChart3, Settings, Trash2, RotateCcw } from 'lucide-react';
 import { useAuth } from '../../contexts/AuthContext';
-import { PieChart, Pie, Cell, ComposedChart, Bar, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ReferenceLine, ResponsiveContainer } from 'recharts';
+import { PieChart, Pie, Cell, ComposedChart, Bar, BarChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ReferenceLine, ResponsiveContainer } from 'recharts';
 import MultiVerticalUploadModal from './MultiVerticalUploadModal';
 
 const API_BASE = process.env.REACT_APP_API_BASE || 'http://localhost:3001/api';
@@ -227,6 +227,126 @@ function TrendChart({ months }) {
     );
 }
 
+// ---------------------------------------------------------------------------
+// Aggregated Burndown Chart
+// ---------------------------------------------------------------------------
+function AggregatedBurndownChart({ data, loading, error }) {
+    if (loading) {
+        return (
+            <div style={{ ...CARD_STYLE, marginBottom: '1.5rem', textAlign: 'center', padding: '2rem' }}>
+                <Loader style={{ animation: 'spin 1s linear infinite', width: '20px', height: '20px', color: '#64748B' }} />
+                <div style={{ fontSize: '0.75rem', color: '#64748B', marginTop: '0.5rem' }}>Loading...</div>
+            </div>
+        );
+    }
+
+    if (error) {
+        return (
+            <div style={{ ...CARD_STYLE, marginBottom: '1.5rem', padding: '1.25rem' }}>
+                <div style={{ fontSize: '0.75rem', color: '#EF4444', fontFamily: 'monospace' }}>
+                    Error loading burndown data: {error}
+                </div>
+            </div>
+        );
+    }
+
+    if (!data) return null;
+
+    // Empty state: no non-compliant devices
+    if (data.total_non_compliant === 0) {
+        return (
+            <div style={{ ...CARD_STYLE, marginBottom: '1.5rem', textAlign: 'center', padding: '2rem' }}>
+                <div style={{ fontSize: '0.8rem', color: '#10B981' }}>No non-compliant devices across any vertical.</div>
+            </div>
+        );
+    }
+
+    // All blockers: no monthly forecast
+    const monthlyKeys = Object.keys(data.monthly_forecast || {});
+    const hasMonthlyData = monthlyKeys.length > 0;
+
+    // Prepare chart data
+    const monthlyData = monthlyKeys
+        .sort()
+        .map(month => ({ month, count: data.monthly_forecast[month] }));
+
+    return (
+        <div style={{ ...CARD_STYLE, marginBottom: '1.5rem' }}>
+            <div style={{ fontSize: '0.7rem', color: '#94A3B8', textTransform: 'uppercase', letterSpacing: '0.05em', marginBottom: '1rem' }}>
+                Aggregated Burndown Forecast
+            </div>
+
+            {/* Summary header */}
+            <div style={{ display: 'flex', gap: '1.5rem', marginBottom: '1.25rem', flexWrap: 'wrap' }}>
+                <div>
+                    <div style={{ fontSize: '0.6rem', color: '#64748B', textTransform: 'uppercase' }}>Non-Compliant</div>
+                    <div style={{ fontSize: '1.3rem', fontWeight: '700', color: '#EF4444' }}>{data.total_non_compliant.toLocaleString()}</div>
+                </div>
+                <div>
+                    <div style={{ fontSize: '0.6rem', color: '#64748B', textTransform: 'uppercase' }}>Blockers</div>
+                    <div style={{ fontSize: '1.3rem', fontWeight: '700', color: '#EF4444' }}>{data.blockers.toLocaleString()}</div>
+                </div>
+                <div>
+                    <div style={{ fontSize: '0.6rem', color: '#64748B', textTransform: 'uppercase' }}>In-Progress</div>
+                    <div style={{ fontSize: '1.3rem', fontWeight: '700', color: '#F59E0B' }}>{data.with_dates.toLocaleString()}</div>
+                </div>
+                {data.projected_clear_date && (
+                    <div>
+                        <div style={{ fontSize: '0.6rem', color: '#64748B', textTransform: 'uppercase' }}>Projected Clear</div>
+                        <div style={{ fontSize: '1.3rem', fontWeight: '700', color: '#10B981' }}>{data.projected_clear_date}</div>
+                    </div>
+                )}
+            </div>
+
+            {/* Chart or blocker message */}
+            {hasMonthlyData ? (
+                <ResponsiveContainer width="100%" height={200}>
+                    <BarChart data={monthlyData}>
+                        <CartesianGrid stroke="rgba(255,255,255,0.05)" strokeDasharray="3 3" />
+                        <XAxis dataKey="month" tick={{ fontSize: 10, fill: '#64748B' }} />
+                        <YAxis tick={{ fontSize: 10, fill: '#64748B' }} />
+                        <Tooltip contentStyle={{ background: '#1E293B', border: '1px solid #334155', borderRadius: '0.5rem', fontSize: '0.75rem' }} />
+                        <Bar dataKey="count" fill="#A78BFA" fillOpacity={0.7} name="Projected Remediations" />
+                    </BarChart>
+                </ResponsiveContainer>
+            ) : (
+                <div style={{ padding: '1.5rem', textAlign: 'center', color: '#F59E0B', fontSize: '0.8rem' }}>
+                    All {data.blockers.toLocaleString()} non-compliant devices lack remediation dates.
+                </div>
+            )}
+
+            {/* Per-vertical contribution table */}
+            {data.by_vertical && data.by_vertical.length > 0 && (
+                <div style={{ marginTop: '1rem' }}>
+                    <div style={{ fontSize: '0.65rem', color: '#64748B', textTransform: 'uppercase', letterSpacing: '0.05em', marginBottom: '0.5rem' }}>
+                        By Vertical
+                    </div>
+                    <table style={{ ...TABLE_STYLE, fontSize: '0.7rem' }}>
+                        <thead>
+                            <tr>
+                                <th style={{ ...TH_STYLE, fontSize: '0.6rem' }}>Vertical</th>
+                                <th style={{ ...TH_STYLE, fontSize: '0.6rem', textAlign: 'right' }}>Total</th>
+                                <th style={{ ...TH_STYLE, fontSize: '0.6rem', textAlign: 'right' }}>Blockers</th>
+                                <th style={{ ...TH_STYLE, fontSize: '0.6rem', textAlign: 'right' }}>With Dates</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            {data.by_vertical.map(v => (
+                                <tr key={v.vertical}>
+                                    <td style={{ ...TD_STYLE, color: PURPLE, fontWeight: '600', padding: '0.5rem 1rem' }}>{v.vertical}</td>
+                                    <td style={{ ...TD_STYLE, textAlign: 'right', padding: '0.5rem 1rem' }}>{v.total.toLocaleString()}</td>
+                                    <td style={{ ...TD_STYLE, textAlign: 'right', color: v.blockers > 0 ? '#EF4444' : '#64748B', padding: '0.5rem 1rem' }}>{v.blockers.toLocaleString()}</td>
+                                    <td style={{ ...TD_STYLE, textAlign: 'right', color: '#F59E0B', padding: '0.5rem 1rem' }}>{v.with_dates.toLocaleString()}</td>
+                                </tr>
+                            ))}
+                        </tbody>
+                    </table>
+                </div>
+            )}
+        </div>
+    );
+}
+
 // ---------------------------------------------------------------------------
 // Vertical Breakdown Table
 // ---------------------------------------------------------------------------
@@ -888,6 +1008,9 @@ export default function CCPMetricsPage() {
     const { isAdmin, isEditor } = useAuth();
     const [stats, setStats] = useState(null);
     const [trend, setTrend] = useState(null);
+    const [burndownData, setBurndownData] = useState(null);
+    const [burndownLoading, setBurndownLoading] = useState(true);
+    const [burndownError, setBurndownError] = useState(null);
     const [loading, setLoading] = useState(true);
     const [error, setError] = useState(null);
     const [showUpload, setShowUpload] = useState(false);
@@ -903,6 +1026,8 @@ export default function CCPMetricsPage() {
     const fetchData = useCallback(() => {
         setLoading(true);
         setError(null);
+        setBurndownLoading(true);
+        setBurndownError(null);
         Promise.all([
             fetch(`${API_BASE}/compliance/vcl-multi/stats`, { credentials: 'include' }).then(r => { if (!r.ok) throw new Error('Failed to load stats'); return r.json(); }),
             fetch(`${API_BASE}/compliance/vcl-multi/trend`, { credentials: 'include' }).then(r => { if (!r.ok) throw new Error('Failed to load trend'); return r.json(); }),
@@ -914,6 +1039,12 @@ export default function CCPMetricsPage() {
             setError(err.message);
             setLoading(false);
         });
+
+        // Fetch burndown independently so a failure doesn't block the rest of the page
+        fetch(`${API_BASE}/compliance/vcl-multi/burndown`, { credentials: 'include' })
+            .then(r => { if (!r.ok) throw new Error('Failed to load burndown'); return r.json(); })
+            .then(data => { setBurndownData(data); setBurndownLoading(false); })
+            .catch(err => { setBurndownError(err.message); setBurndownLoading(false); });
     }, []);
 
     useEffect(() => { fetchData(); }, [fetchData]);
@@ -1060,6 +1191,13 @@ export default function CCPMetricsPage() {
                         <DonutChart donut={stats.donut} />
                     </div>
 
+                    {/* Aggregated burndown forecast */}
+                    <AggregatedBurndownChart
+                        data={burndownData}
+                        loading={burndownLoading}
+                        error={burndownError}
+                    />
+
                     {/* Vertical breakdown table */}
                     <VerticalTable
                         breakdown={stats.vertical_breakdown}