#!/usr/bin/env node
// REVIEW STRIP (A, 29 Oct): n frames of one kill between film t0 and t1, as one contact sheet. Headless (--headless=new, private profile).
//   node _tools/qa_strip.cjs <key> <t0> <t1> [--n 8] [--gore 5] [--page 58k_x.html] [--pre 'K58.X=false'] [--w 480] [--out dir]
// Writes <out>/<key>.strip_<t0>-<t1>_g<gore>.png (default out /Volumes/Workspace/Scratch/qa). Runs on the Mac or the VM
// (_tools/vm_motionqa.sh --strip runs it there and copies the png back).
const fs = require('fs'), os = require('os'), path = require('path');
let chromium; try { ({ chromium } = require('playwright')); } catch (e) { ({ chromium } = require('/Users/basha/node_modules/playwright')); }
const A = process.argv.slice(2), pos = [], opt = { n: 8, gore: 5, w: 480, out: '/Volumes/Workspace/Scratch/qa' };
for (let i = 0; i < A.length; i++) { const a = A[i]; if (a.startsWith('--')) opt[a.slice(2)] = A[++i]; else pos.push(a); }
const [key, t0s, t1s] = pos; if (!key || t0s == null || t1s == null) { console.log('usage: node _tools/qa_strip.cjs <key> <t0> <t1> [--n 8] [--gore 5] [--page ..] [--pre ..] [--w 480] [--out dir]'); process.exit(2); }
const t0 = +t0s, t1 = +t1s, n = Math.max(1, +opt.n | 0), TW = +opt.w | 0 || 480;
if (!fs.existsSync(opt.out)) fs.mkdirSync(opt.out, { recursive: true });
const CHROME = ['/Applications/Google Chrome.app/Contents/MacOS/Google Chrome', '/usr/bin/google-chrome', '/usr/bin/chromium'].find((p) => fs.existsSync(p));
const ROOT = path.resolve(__dirname, '..');
(async () => {
  const udd = fs.mkdtempSync(path.join(os.tmpdir(), 'k58strip-')); let code = 0;
  const ctx = await chromium.launchPersistentContext(udd, Object.assign({ headless: true, args: ['--headless=new', '--allow-file-access-from-files'], viewport: { width: 1200, height: 900 } }, CHROME ? { executablePath: CHROME } : {}));
  try {
    const page = await ctx.newPage(); const pg = opt.page || '58k_' + key.split('.')[0] + '.html';
    await page.goto('file://' + path.join(ROOT, pg)); await page.waitForFunction(() => document.documentElement.classList.contains('k58-loaded'), null, { timeout: 150000 });
    const R = await page.evaluate(async ([key, t0, t1, n, TW, o]) => {
      if (o.pre) (0, eval)(o.pre); const def = K58.get(key); if (!def) return { err: 'no kill ' + key };
      const FS = K58.FSTEP || 1 / 180, TH = Math.round(TW * 0.4625), cols = Math.min(4, n), rows = Math.ceil(n / cols), cv = document.createElement('canvas');
      cv.width = cols * TW; cv.height = 24 + rows * (TH + 18); const g = cv.getContext('2d'); g.fillStyle = '#0E1018'; g.fillRect(0, 0, cv.width, cv.height);
      g.font = 'bold 14px sans-serif'; g.fillStyle = '#E8ECF8'; g.fillText(key + '  ' + (def.name || '') + '  gore ' + o.gore + (o.pre ? '  pre: ' + o.pre : ''), 8, 17);
      const v = K58.offscreen(TW, TH, { dpr: 1 }); v.load(def, { gore: +o.gore });
      for (let i = 0; i < n; i++) { const t = n === 1 ? t0 : t0 + (t1 - t0) * i / (n - 1); v.advance(Math.round(t / FS), 1e9); v.render();
        const X = (i % cols) * TW, Y = 24 + Math.floor(i / cols) * (TH + 18); g.drawImage(v.cv, X, Y + 16, TW - 4, TH);
        g.font = '12px sans-serif'; g.fillStyle = '#C8D0E8'; g.fillText(t.toFixed(2) + 's', X + 4, Y + 12); }
      K58.offRelease(v); return { png: cv.toDataURL('image/png') };
    }, [key, t0, t1, n, TW, opt]);
    if (R.err) { console.log('ERROR ' + R.err); code = 1; }
    else { const f = path.join(opt.out, key + '.strip_' + t0.toFixed(2) + '-' + t1.toFixed(2) + '_g' + opt.gore + '.png'); fs.writeFileSync(f, Buffer.from(R.png.split(',')[1], 'base64')); console.log('  -> ' + f); }
    await Promise.race([page.close(), new Promise((r) => setTimeout(r, 8000))]);
  } catch (e) { console.error(e); code = 3; }
  finally { let closed = false; await Promise.race([ctx.close().then(() => { closed = true; }), new Promise((r) => setTimeout(r, 10000))]);
    if (!closed) { try { for (const ln of require('child_process').execSync('ps -axo pid=,command=', { encoding: 'utf8', maxBuffer: 1 << 26 }).split('\n')) if (ln.includes(udd)) { const pid = parseInt(ln, 10); if (pid && pid !== process.pid) try { process.kill(pid, 'SIGKILL'); } catch (e) {} } } catch (e) {} }
    try { fs.rmSync(udd, { recursive: true, force: true }); } catch (e) {} }
  process.exit(code);
})();