#!/usr/bin/env bun
// peach-browser/scripts/ci.ts
// Run at the end of a work session to verify everything is solid.
// Usage: bun run scripts/ci.ts

import { spawnSync } from 'bun';
import { existsSync } from 'node:fs';
import { resolveBin } from './release-lib';

const RESET  = '\x1b[0m';
const GREEN  = '\x1b[32m';
const RED    = '\x1b[31m';
const BOLD   = '\x1b[1m';
const DIM    = '\x1b[2m';
const RUN_FIREFOX_SENDER_ONLY = process.env.PEACH_E2E_FIREFOX === '1';

interface Step {
  name: string;
  cmd: string[] | (() => string[]);
  cwd?: string;
}

const steps: Step[] = [
  {
    // LV-6: standardize on bun + a frozen lockfile. --frozen-lockfile exits
    // non-zero if bun.lock is stale relative to package.json, so a forgotten
    // lockfile update fails CI instead of drifting silently.
    name: 'Lockfile freshness',
    cmd: ['bun', 'install', '--frozen-lockfile'],
  },
  {
    name: 'TypeScript',
    cmd: () => [resolveBin('tsc'), '--noEmit'],
  },
  {
    name: 'Lint',
    cmd: ['npm', 'run', 'lint'],
  },
  {
    // PB-26-003: rebuild the Noise WASM from crypto-core and fail if the
    // committed blob drifts — "reviewed source → shipped binary" enforced.
    name: 'Noise WASM provenance',
    cmd: ['node', 'scripts/check-noise-core.mjs'],
  },
  {
    name: 'Chrome build',
    cmd: ['npm', 'run', 'build:chrome'],
  },
  {
    name: 'Firefox build',
    cmd: ['npm', 'run', 'build:firefox'],
  },
  {
    // Runs after both builds: the browser gate exercises the shipped targets.
    name: 'Release browser gate',
    cmd: ['bun', 'run', 'scripts/run-release-browser-gate.ts'],
  },
  {
    name: 'Tests',
    cmd: ['npm', 'test', '--', '--reporter=verbose'],
  },
  ...(RUN_FIREFOX_SENDER_ONLY
    ? [{
        name: 'Firefox sender context',
        cmd: ['npm', 'run', 'test:firefox:sender'],
      }]
    : []),
];

function run(step: Step): { ok: boolean; output: string; duration: number } {
  const start = Date.now();
  const cmd = typeof step.cmd === 'function' ? step.cmd() : step.cmd;
  const result = spawnSync(cmd, {
    cwd: step.cwd ?? process.cwd(),
    env: process.env,
    stdout: 'pipe',
    stderr: 'pipe',
  });
  const duration = Date.now() - start;
  const ok = result.exitCode === 0;
  const output = [
    result.stdout?.toString().trim(),
    result.stderr?.toString().trim(),
  ].filter(Boolean).join('\n');

  return { ok, output, duration };
}

function formatDuration(ms: number): string {
  if (ms < 1000) return `${ms}ms`;
  return `${(ms / 1000).toFixed(1)}s`;
}

function printStep(name: string, ok: boolean, duration: number) {
  const icon = ok ? `${GREEN}✓${RESET}` : `${RED}✗${RESET}`;
  const time = `${DIM}${formatDuration(duration)}${RESET}`;
  console.log(`  ${icon}  ${name.padEnd(20)} ${time}`);
}

async function main() {
  console.log();
  console.log(`${BOLD}peach-browser CI${RESET}`);
  console.log(`${DIM}${new Date().toLocaleTimeString()}${RESET}`);
  console.log();

  let failed = false;
  const failures: { name: string; output: string }[] = [];

  for (const step of steps) {
    process.stdout.write(`  ${DIM}…${RESET}  ${step.name.padEnd(20)}\r`);
    const result = run(step);
    printStep(step.name, result.ok, result.duration);

    if (!result.ok) {
      failed = true;
      failures.push({ name: step.name, output: result.output });
      break; // fail fast
    }
  }

  console.log();

  if (!failed) {
    console.log(`${GREEN}${BOLD}All checks passed.${RESET}`);
    console.log();

    // Show build artifact sizes
    const chromeManifest = 'dist-chrome/manifest.json';
    if (existsSync(chromeManifest)) {
      const manifest = JSON.parse(await Bun.file(chromeManifest).text());
      console.log(`${DIM}Version: ${manifest.version}${RESET}`);
    }
  } else {
    console.log(`${RED}${BOLD}Failed: ${failures[0].name}${RESET}`);
    console.log();

    // Print the relevant failure output
    const output = failures[0].output;
    if (output) {
      // Show last 30 lines of output — most errors are at the end
      const lines = output.split('\n');
      const relevant = lines.slice(-30).join('\n');
      console.log(`${DIM}${relevant}${RESET}`);
    }

    console.log();
    process.exit(1);
  }
}

main();