import { Octokit } from 'npm:@octokit/rest@19.0.7';

const TAG_PREFIX = 'gui-'

type Platform = 'darwin-x86_64' | 'darwin-aarch64' | 'linux-x86_64' | 'windows-x86_64'
const PLATFORMS: Platform[] = ['darwin-x86_64', 'darwin-aarch64', 'linux-x86_64', 'windows-x86_64']

const PlatformSuffix: Record<Platform, string> = {
  'darwin-x86_64': '.app.tar.gz',
  'darwin-aarch64': '.app.tar.gz',
  'linux-x86_64': '.AppImage.tar.gz',
  'windows-x86_64': '.msi.zip',
}

type File = {
  signature: string
  url: string
}

type UpdateJson = {
  version: string
  notes: string
  pub_date: string
  platforms: Record<Platform, File>
}

const REPO = {
  owner: 'spacemeowx2',
  repo: 's3si.ts',
}

const octokit = new Octokit({
  auth: Deno.env.get('GITHUB_TOKEN'),
});

async function findFirstGuiRelease() {
  let page = 1;
  while (true) {
    const { data: list } = await octokit.repos.listReleases({
      ...REPO,
      page,
    })

    if (list.length === 0) {
      return undefined
    }

    for (const release of list) {
      if (release.tag_name.startsWith(TAG_PREFIX)) {
        return release
      }
    }

    page += 1;
  }
}

const release = await findFirstGuiRelease();

const version = release?.tag_name.slice(TAG_PREFIX.length) ?? 'unknown';
const notes = release?.body ?? 'unknown';
const pub_date = release?.published_at ?? 'unknown';

async function makePlatforms(r: typeof release) {
  const assets = r?.assets ?? [];
  const platforms = Object.fromEntries(PLATFORMS.map(p => {
    const asset = assets.find(i => i.name.endsWith(PlatformSuffix[p]));

    if (!asset) {
      throw new Error(`Asset not found for ${p}`)
    }

    return [p, {
      signature: asset.browser_download_url + '.sig',
      url: asset.browser_download_url,
    }]
  })) as Record<Platform, File>;


  return platforms
}

const updateJson: UpdateJson = {
  version,
  notes,
  pub_date,
  platforms: await makePlatforms(release),
}

// fetch signatures
for (const platform of PLATFORMS) {
  const file = updateJson.platforms[platform];
  const res = await fetch(file.signature);
  file.signature = await res.text();
}

console.log(JSON.stringify(updateJson, null, 2));