// Thin API client + SSE live stream.

async function jget(url) {
  const r = await fetch(url);
  if (!r.ok) throw new Error(`${url} → ${r.status}`);
  return r.json();
}
async function jpost(url, body) {
  const r = await fetch(url, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body || {}),
  });
  if (!r.ok) throw new Error(`${url} → ${r.status}`);
  return r.json();
}

export const api = {
  authStatus: () => jget('/api/auth/status'),
  login: (username, password) => jpost('/api/login', { username, password }),
  logout: () => jpost('/api/logout', {}),
  plugins: () => jget('/api/plugins'),

  meta: () => jget('/api/meta'),
  snapshot: () => jget('/api/snapshot'),
  torrent: (hash) => jget(`/api/torrents/${hash}`),
  trackers: (hash) => jget(`/api/torrents/${hash}/trackers`),
  peers: (hash) => jget(`/api/torrents/${hash}/peers`),
  files: (hash) => jget(`/api/torrents/${hash}/files`),
  pieces: (hash) => jget(`/api/torrents/${hash}/pieces`),

  action: (action, hashes, params) => jpost('/api/action', { action, hashes, params }),
  remove: (hashes, deleteFiles) => jpost('/api/delete', { hashes, deleteFiles }),
  add: (opts) => jpost('/api/add', opts),
  toggleAltSpeed: () => jpost('/api/altspeed', {}),

  createCategory: (name, savePath) => jpost('/api/categories', { name, savePath }),
  deleteCategory: (name) => jpost('/api/categories/delete', { name }),
  editCategory: (name, newName, savePath) =>
    jpost('/api/categories/edit', { name, newName, savePath }),
  createTag: (name) => jpost('/api/tags', { name }),
  deleteTag: (name) => jpost('/api/tags/delete', { name }),

  rss: () => jget('/api/rss'),
  rssRules: () => jget('/api/rss/rules'),
  addFeed: (name, url) => jpost('/api/rss', { name, url }),
  deleteFeed: (name) => jpost('/api/rss/delete', { name }),
  saveRssRule: (rule) => jpost('/api/rss/rules', rule),
  deleteRssRule: (name) => jpost('/api/rss/rules/delete', { name }),
  rssDownload: (item) => jpost('/api/rss/download', item),
  saveIndexer: (ix) => jpost('/api/indexers', ix),
  deleteIndexer: (name) => jpost('/api/indexers/delete', { name }),
  script: () => jget('/api/script'),
  saveScript: (source) => jpost('/api/script', { source }),
  saveScriptSettings: (settings) => jpost('/api/script/settings', { settings }),
  search: (q) => jget(`/api/search?q=${encodeURIComponent(q)}`),

  // Live snapshot stream. onSnapshot(snapshot) called ~1/s.
  stream(onSnapshot, onStatus) {
    const es = new EventSource('/api/stream');
    es.addEventListener('snapshot', (e) => onSnapshot(JSON.parse(e.data)));
    es.onopen = () => onStatus && onStatus('connected');
    es.onerror = () => onStatus && onStatus('reconnecting');
    return es;
  },
};