// Migration: Add FP submission editing support (lifecycle status, batch UUID, history table)
const sqlite3 = require('sqlite3').verbose();
const path = require('path');

const dbPath = path.join(__dirname, '..', 'cve_database.db');
const db = new sqlite3.Database(dbPath);

console.log('Starting FP submission editing migration...');

db.serialize(() => {
    // Add lifecycle_status column to ivanti_fp_submissions
    // Wrapped in try/catch style via callback — SQLite throws if column already exists
    db.run(
        `ALTER TABLE ivanti_fp_submissions ADD COLUMN lifecycle_status TEXT NOT NULL DEFAULT 'submitted' CHECK(lifecycle_status IN ('submitted', 'approved', 'rejected', 'rework', 'resubmitted'))`,
        (err) => {
            if (err) {
                if (err.message.includes('duplicate column')) {
                    console.log('✓ lifecycle_status column already exists');
                } else {
                    console.error('Error adding lifecycle_status column:', err.message);
                }
            } else {
                console.log('✓ lifecycle_status column added');
            }
        }
    );

    // Add ivanti_workflow_batch_uuid column
    db.run(
        `ALTER TABLE ivanti_fp_submissions ADD COLUMN ivanti_workflow_batch_uuid TEXT`,
        (err) => {
            if (err) {
                if (err.message.includes('duplicate column')) {
                    console.log('✓ ivanti_workflow_batch_uuid column already exists');
                } else {
                    console.error('Error adding ivanti_workflow_batch_uuid column:', err.message);
                }
            } else {
                console.log('✓ ivanti_workflow_batch_uuid column added');
            }
        }
    );

    // Add updated_at column (SQLite requires constant defaults for ALTER TABLE, so default to NULL)
    db.run(
        `ALTER TABLE ivanti_fp_submissions ADD COLUMN updated_at DATETIME DEFAULT NULL`,
        (err) => {
            if (err) {
                if (err.message.includes('duplicate column')) {
                    console.log('✓ updated_at column already exists');
                } else {
                    console.error('Error adding updated_at column:', err.message);
                }
            } else {
                console.log('✓ updated_at column added');
            }
        }
    );

    // Create submission history table
    db.run(`
        CREATE TABLE IF NOT EXISTS ivanti_fp_submission_history (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            submission_id INTEGER NOT NULL,
            user_id INTEGER NOT NULL,
            username TEXT NOT NULL,
            change_type TEXT NOT NULL CHECK(change_type IN (
                'created', 'fields_updated', 'findings_added',
                'attachments_added', 'status_changed'
            )),
            change_details_json TEXT,
            created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
            FOREIGN KEY (submission_id) REFERENCES ivanti_fp_submissions(id) ON DELETE CASCADE
        )
    `, (err) => {
        if (err) console.error('Error creating history table:', err.message);
        else console.log('✓ ivanti_fp_submission_history table created');
    });

    // Create index on submission_id for history lookups
    db.run(
        `CREATE INDEX IF NOT EXISTS idx_fp_history_submission ON ivanti_fp_submission_history(submission_id)`,
        (err) => {
            if (err) console.error('Error creating history index:', err.message);
            else console.log('✓ idx_fp_history_submission index created');
        }
    );

    console.log('✓ Migration statements queued');
});

db.close(() => {
    console.log('Migration complete!');
});