// Migration: Add multi-vertical support for VCL compliance reporting
// Adds vertical column to compliance_items and compliance_uploads,
// creates vcl_multi_vertical_summary table for per-vertical metric data.
const pool = require('../db');

async function run() {
    console.log('Starting VCL multi-vertical migration...');
    try {
        // Add vertical column to compliance_items
        await pool.query(`ALTER TABLE compliance_items ADD COLUMN IF NOT EXISTS vertical TEXT DEFAULT NULL`);
        console.log('✓ vertical column added to compliance_items');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_compliance_items_vertical ON compliance_items(vertical)`);
        console.log('✓ idx_compliance_items_vertical index created');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_compliance_items_vertical_status ON compliance_items(vertical, status)`);
        console.log('✓ idx_compliance_items_vertical_status index created');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_compliance_items_vertical_metric ON compliance_items(vertical, metric_id, status)`);
        console.log('✓ idx_compliance_items_vertical_metric index created');

        // Add vertical column to compliance_uploads
        await pool.query(`ALTER TABLE compliance_uploads ADD COLUMN IF NOT EXISTS vertical TEXT DEFAULT NULL`);
        console.log('✓ vertical column added to compliance_uploads');

        // Create summary table for per-vertical metric data from Summary sheets
        await pool.query(`
            CREATE TABLE IF NOT EXISTS vcl_multi_vertical_summary (
                id              SERIAL PRIMARY KEY,
                upload_id       INTEGER NOT NULL REFERENCES compliance_uploads(id) ON DELETE CASCADE,
                vertical        TEXT NOT NULL,
                metric_id       TEXT NOT NULL,
                metric_desc     TEXT DEFAULT '',
                category        TEXT DEFAULT 'Other',
                team            TEXT DEFAULT '',
                priority        TEXT DEFAULT '',
                non_compliant   INTEGER DEFAULT 0,
                compliant       INTEGER DEFAULT 0,
                total           INTEGER DEFAULT 0,
                compliance_pct  NUMERIC(5,2) DEFAULT 0,
                target          NUMERIC(5,2) DEFAULT 0,
                status          TEXT DEFAULT '',
                created_at      TIMESTAMPTZ DEFAULT NOW()
            )
        `);
        console.log('✓ vcl_multi_vertical_summary table created');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_vcl_multi_summary_vertical ON vcl_multi_vertical_summary(vertical)`);
        console.log('✓ idx_vcl_multi_summary_vertical index created');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_vcl_multi_summary_upload ON vcl_multi_vertical_summary(upload_id)`);
        console.log('✓ idx_vcl_multi_summary_upload index created');

        await pool.query(`CREATE INDEX IF NOT EXISTS idx_vcl_multi_summary_vertical_metric ON vcl_multi_vertical_summary(vertical, metric_id)`);
        console.log('✓ idx_vcl_multi_summary_vertical_metric index created');

    } catch (err) {
        console.error('Migration error:', err.message);
        process.exit(1);
    }
    console.log('Migration complete.');
    process.exit(0);
}

run();