#!/usr/bin/env node
// Release script — builds the Windows desktop installer, signs it with the
// Tauri updater key, and uploads the artifacts + latest.json to the update
// host over scp. Reads credentials from .env.release (not committed).
//
// Usage:
//   pnpm release 0.10.2 "Ringtone cap auf 8 MB, bugfixes"

import { execSync } from 'node:child_process';
import { existsSync, readFileSync, writeFileSync } from 'node:fs';
import { join, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';

const ROOT = resolve(fileURLToPath(new URL('.', import.meta.url)), '..');

const [, , versionArg, ...notesParts] = process.argv;
if (!versionArg || !/^\d+\.\d+\.\d+$/.test(versionArg)) {
  console.error('Usage: pnpm release <x.y.z> "release notes"');
  process.exit(1);
}
const notes = notesParts.join(' ').trim() || `Release ${versionArg}`;

const envPath = join(ROOT, '.env.release');
if (!existsSync(envPath)) {
  console.error('.env.release missing. Copy .env.release.example and fill it in.');
  process.exit(1);
}
const env = Object.fromEntries(
  readFileSync(envPath, 'utf8')
    .split('\n')
    .map((l) => l.trim())
    .filter((l) => l && !l.startsWith('#'))
    .map((l) => {
      const i = l.indexOf('=');
      return [l.slice(0, i).trim(), l.slice(i + 1).trim()];
    }),
);

const required = [
  'TAURI_SIGNING_PRIVATE_KEY_PATH',
  'UPDATE_HOST',
  'UPDATE_SSH_USER',
  'UPDATE_REMOTE_PATH',
];
for (const key of required) {
  if (!env[key]) {
    console.error(`Missing ${key} in .env.release`);
    process.exit(1);
  }
}
if (!existsSync(env.TAURI_SIGNING_PRIVATE_KEY_PATH)) {
  console.error(`Signing key not found at ${env.TAURI_SIGNING_PRIVATE_KEY_PATH}`);
  process.exit(1);
}

const gitStatus = execSync('git status --porcelain', { cwd: ROOT, encoding: 'utf8' });
if (gitStatus.trim()) {
  console.error('Working tree not clean. Commit or stash first.');
  console.error(gitStatus);
  process.exit(1);
}

const pkgJsonPath = join(ROOT, 'apps/desktop/package.json');
const tauriConfPath = join(ROOT, 'apps/desktop/src-tauri/tauri.conf.json');
const cargoTomlPath = join(ROOT, 'apps/desktop/src-tauri/Cargo.toml');

function bumpJson(path, version) {
  const obj = JSON.parse(readFileSync(path, 'utf8'));
  obj.version = version;
  writeFileSync(path, JSON.stringify(obj, null, 2) + '\n', 'utf8');
}
function bumpCargo(path, version) {
  const text = readFileSync(path, 'utf8');
  const next = text.replace(/^version = "[^"]+"$/m, `version = "${version}"`);
  if (next === text) throw new Error(`No version line found in ${path}`);
  writeFileSync(path, next, 'utf8');
}

bumpJson(pkgJsonPath, versionArg);
bumpJson(tauriConfPath, versionArg);
bumpCargo(cargoTomlPath, versionArg);

console.log(`Version -> ${versionArg}. Building NSIS bundle…`);

const signingKey = readFileSync(env.TAURI_SIGNING_PRIVATE_KEY_PATH, 'utf8').trim();
const buildEnv = {
  ...process.env,
  TAURI_SIGNING_PRIVATE_KEY: signingKey,
  TAURI_SIGNING_PRIVATE_KEY_PASSWORD: env.TAURI_SIGNING_PRIVATE_KEY_PASSWORD ?? '',
};
execSync('pnpm --filter @chat-app/desktop build -- --bundles nsis', {
  cwd: ROOT,
  env: buildEnv,
  stdio: 'inherit',
});

const bundleDir = join(ROOT, 'apps/desktop/src-tauri/target/release/bundle/nsis');
const zipName = `ChatApp_${versionArg}_x64-setup.nsis.zip`;
const exeName = `ChatApp_${versionArg}_x64-setup.exe`;
const sigName = `${zipName}.sig`;
const zipPath = join(bundleDir, zipName);
const exePath = join(bundleDir, exeName);
const sigPath = join(bundleDir, sigName);
for (const p of [zipPath, sigPath]) {
  if (!existsSync(p)) {
    console.error(`Missing build artifact: ${p}`);
    process.exit(1);
  }
}

const signature = readFileSync(sigPath, 'utf8').trim();
const latest = {
  version: versionArg,
  notes,
  pub_date: new Date().toISOString(),
  platforms: {
    'windows-x86_64': {
      signature,
      url: `https://${env.UPDATE_HOST}/windows/${zipName}`,
    },
  },
};
const latestJsonPath = join(bundleDir, 'latest.json');
writeFileSync(latestJsonPath, JSON.stringify(latest, null, 2), 'utf8');

const sshTarget = `${env.UPDATE_SSH_USER}@${env.UPDATE_HOST}`;
const keyFlag = env.UPDATE_SSH_KEY ? ` -i "${env.UPDATE_SSH_KEY}"` : '';
function scp(localPath) {
  execSync(`scp${keyFlag} "${localPath}" ${sshTarget}:${env.UPDATE_REMOTE_PATH}/`, {
    cwd: ROOT,
    stdio: 'inherit',
  });
}

console.log('Uploading artifacts (JSON last so clients never see a stale ref)…');
scp(zipPath);
scp(sigPath);
// Also ship the bare installer so friends can download it directly via browser
// without going through the updater — useful for the very first install.
if (existsSync(exePath)) scp(exePath);
scp(latestJsonPath);

execSync(
  `git add apps/desktop/package.json apps/desktop/src-tauri/tauri.conf.json apps/desktop/src-tauri/Cargo.toml`,
  { cwd: ROOT, stdio: 'inherit' },
);
execSync(`git commit -m "chore(desktop): release v${versionArg}"`, {
  cwd: ROOT,
  stdio: 'inherit',
});
execSync(`git tag v${versionArg}`, { cwd: ROOT, stdio: 'inherit' });

console.log(`\nReleased v${versionArg}`);
console.log(`  Manifest: https://${env.UPDATE_HOST}/windows/latest.json`);
console.log(`  Installer: https://${env.UPDATE_HOST}/windows/${exeName}`);
console.log(`  Run 'git push && git push --tags' to sync to remote.`);