import fs from 'fs-extra';
import { spawnSync } from 'child_process';
import fetch from 'node-fetch';
import dotenv from 'dotenv';
dotenv.config({ path: './.env' }); // or specify your env file path here
// Load environment variables for convenience (or use dotenv if you like)
const {
  GITEA_URL,
  GITEA_USERNAME,
  GITEA_REPO,
  GITEA_TOKEN,
  VERSION,
} = process.env;

if (!GITEA_URL || !GITEA_USERNAME || !GITEA_REPO || !GITEA_TOKEN || !VERSION) {
  console.error('Missing required environment variables!');
  process.exit(1);
}

// 1) Generate or update CHANGELOG.md for the version
console.log('Generating CHANGELOG.md...');
const result = spawnSync('npx', [
  'conventional-changelog',
  '-p',
  'conventionalcommits',
  '-i',
  'CHANGELOG.md',
  '-s',
  '-r',
  '0'
], { stdio: 'inherit', shell: true });

if (result.status !== 0) {
    console.log(result)
  console.error('Failed to generate changelog');
  process.exit(1);
}

// 2) Read changelog content for the current version
const changelog = fs.readFileSync('CHANGELOG.md', 'utf8');
const regex = new RegExp(`## \\[${VERSION}\\][\\s\\S]*?(?=## \\[|$)`, 'm');
const releaseNotes = changelog.match(regex)?.[0] || changelog;

console.log(`Release notes for v${VERSION}:\n`, releaseNotes);

// 3) Create Gitea release
const createRelease = async () => {
  const apiUrl = `https://${GITEA_URL}/api/v1/repos/${GITEA_USERNAME}/${GITEA_REPO}/releases`;
  const releaseData = {
    tag_name: `v${VERSION}`,
    name: `v${VERSION}`,
    body: releaseNotes,
    draft: false,
    prerelease: false,
  };

  const response = await fetch(apiUrl, {
    method: 'POST',
    headers: {
      Authorization: `token ${GITEA_TOKEN}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(releaseData),
  });

  if (!response.ok) {
    const errorText = await response.text();
    throw new Error(`Failed to create release: ${response.status} - ${errorText}`);
  }

  const release = await response.json();
  console.log('Release created:', release.html_url || release.url);
  return release;
};

// 4) Upload release zip asset
const uploadAsset = async (release) => {
  const apiUrl = `https://${GITEA_URL}/api/v1/repos/${GITEA_USERNAME}/${GITEA_REPO}/releases/assets?tag=${release.tag_name}`;
  const filePath = `releases/release-${VERSION}.zip`;

  if (!fs.existsSync(filePath)) {
    console.warn(`Zip file not found: ${filePath}. Skipping asset upload.`);
    return;
  }

  // Use form-data and fetch for uploading binary
  const FormData = (await import('form-data')).default;
  const form = new FormData();
  form.append('name', `release-${VERSION}.zip`);
  form.append('attachment', fs.createReadStream(filePath));

  const response = await fetch(apiUrl, {
    method: 'POST',
    headers: {
      Authorization: `token ${GITEA_TOKEN}`,
      ...form.getHeaders(),
    },
    body: form,
  });

  if (!response.ok) {
    const errorText = await response.text();
    throw new Error(`Failed to upload asset: ${response.status} - ${errorText}`);
  }

  const asset = await response.json();
  console.log('Asset uploaded:', asset.browser_download_url || asset.url);
};

(async () => {
  try {
    const release = await createRelease();
    await uploadAsset(release);
  } catch (err) {
    console.error(err);
    process.exit(1);
  }
})();