// Derive slotMaps for DSCA33/45 models that still render null (no slotMap), using the
// Hoffman _srcSerial original as the oracle: match its Final-Test measured values, in
// order, to the DB record's value-bearing STATUS entries (numeric greedy). Writes the
// slotMap into dsca33-45-templates.json. --apply to persist.
process.env.DSCA_VALIDATE_MODE = '1';
const fs = require('fs'), https = require('https');
const db = require('./database/db');
const dse = require('./templates/datasheet-exact');
const TPL = './dsca33-45-templates.json';
const c = JSON.parse(fs.readFileSync('C:\\ProgramData\\dataforth-uploader\\credentials.json', 'utf8'));
const APPLY = process.argv.includes('--apply');
const only = process.argv.slice(2).filter(a => !a.startsWith('--'));
function req(m, uri, h, b) { return new Promise((res, rej) => { const u = new URL(uri); const r = https.request({ hostname: u.hostname, port: 443, path: u.pathname, method: m, headers: h, timeout: 30000 }, x => { let d = ''; x.on('data', c => d += c); x.on('end', () => { try { res(JSON.parse(d)); } catch { res({ _raw: d }); } }); }); r.on('error', rej); if (b) r.write(b); r.end(); }); }
function colSpans(sep) { const cols = []; let m; const re = /=+/g; while ((m = re.exec(sep))) cols.push([m.index, m.index + m[0].length]); return cols; }
// Final-Test measured numeric values from a Hoffman original, in row order (spec rows only).
function hoffmanMeasured(content) {
    const L = content.replace(/\r/g, '').split('\n');
    const fi = L.findIndex(l => /FINAL TEST RESULTS/.test(l)); if (fi < 0) return null;
    let hi = -1; for (let i = fi + 1; i < L.length; i++) if (/Parameter\s+Measured/.test(L[i])) { hi = i; break; } if (hi < 0) return null;
    const cols = colSpans(L[hi + 1]); if (cols.length < 4) return null;
    const [pc, mc, sc] = cols;
    const out = [];
    for (let i = hi + 2; i < L.length; i++) {
        const l = L[i]; if (/^\s*_{5,}|Check List|It is hereby/.test(l)) break; if (!l.trim()) continue;
        if (/^\s*Standard output load/i.test(l)) continue;
        const meas = (l.slice(mc[0], sc[0]) || '').trim().split(/\s+/)[0];
        const spec = (l.slice(sc[0], cols[3][0]) || '').trim();
        if (!spec) continue;              // spec-less row (Withstand/Hi-Pot/section head)
        const v = parseFloat(meas);
        if (isNaN(v)) return null;
        out.push(v);
    }
    return out;
}
(async () => {
    const tpl = JSON.parse(fs.readFileSync(TPL, 'utf8'));
    const form = Object.entries({ grant_type: 'client_credentials', client_id: c.CF_CLIENT_ID, client_secret: c.CF_CLIENT_SECRET, scope: c.CF_SCOPE }).map(([k, v]) => encodeURIComponent(k) + '=' + encodeURIComponent(v)).join('&');
    const t = (await req('POST', c.CF_TOKEN_URL, { 'Content-Type': 'application/x-www-form-urlencoded', 'Content-Length': Buffer.byteLength(form) }, form)).access_token;
    const models = (only.length ? only : Object.keys(tpl)).filter(m => tpl[m] && !Array.isArray(tpl[m].slotMap));
    let done = 0; const failed = [];
    for (const m of models) {
        const sn = tpl[m]._srcSerial; if (!sn) { failed.push(m + '(no srcSerial)'); continue; }
        const rec = await db.queryOne('SELECT raw_data FROM test_records WHERE serial_number=$1 AND model_number=$2', [sn, m]);
        if (!rec) { failed.push(m + '(no DB rec)'); continue; }
        const g = await req('GET', c.CF_API_BASE + '/api/v1/TestReportDataFiles/' + encodeURIComponent(sn), { Authorization: 'Bearer ' + t });
        if (!g.Content) { failed.push(m + '(no Hoffman)'); continue; }
        const measured = hoffmanMeasured(g.Content);
        const p = dse.parseRawData(rec.raw_data, 'DSCA');
        if (!measured || !p) { failed.push(m + '(parse)'); continue; }
        const specRows = tpl[m].rows.filter(r => (r.spec || '').trim()).length;
        if (measured.length !== specRows) { failed.push(m + '(rows ' + measured.length + '!=' + specRows + ')'); continue; }
        // numeric greedy match: each Final-Test measured value -> next status entry with equal value
        const map = []; let j = 0; let ok = true;
        for (const mv of measured) {
            let found = -1;
            for (let k = j; k < p.statusEntries.length; k++) {
                const s = p.statusEntries[k];
                if (!s || s.length <= 4) continue;
                // compare at DISPLAY precision: fround + toFixed(decimal-code), like the
                // renderer — so near-zero (raw 4.4e-5 displayed "0.0000") matches the
                // Hoffman displayed value instead of failing a raw-value tolerance.
                const code = parseInt(s[s.length - 1], 10);
                const val = parseFloat(s.substring(4, s.length - 1).trim());
                if (isNaN(val)) continue;
                const disp = parseFloat(Math.fround(val).toFixed(isNaN(code) ? 1 : code));
                if (Math.abs(disp - mv) < 1e-9) { found = k; break; }
            }
            if (found < 0) { ok = false; break; }
            map.push(found); j = found + 1;
        }
        if (ok && map.length === specRows) { tpl[m].slotMap = map; done++; console.log('  ' + m.padEnd(13) + ' slotMap=[' + map.join(',') + '] (oracle ' + sn + ')'); }
        else failed.push(m + '(no clean match)');
    }
    console.log('\nderived: ' + done);
    if (failed.length) console.log('failed: ' + failed.join(', '));
    if (APPLY) { fs.writeFileSync(TPL, JSON.stringify(tpl)); console.log('[APPLY] wrote ' + TPL); }
    else console.log('(dry run — pass --apply to write)');
    await db.close();
})().catch(e => { console.error('ERR', e.message, e.stack); process.exit(1); });