/* ============================================================
   Elysium API client — talks to FastAPI routes on gr.Server.
   - Sends multipart/form-data with optional attachments
   - Hard-caps at 2 files (server also enforces)
   - Surfaces friendly errors so boot.js can toast them
   ============================================================ */
window.ElysiumAPI = {
  async turn(text, files) {
    const fd = new FormData();
    fd.append('user_text', text || '');
    (files || []).slice(0, 2).forEach(f => fd.append('attachments', f, f.name));
    const r = await fetch('/api/turn', { method: 'POST', body: fd });
    if (!r.ok) {
      let detail = '';
      try { detail = (await r.text()).slice(0, 200); } catch {}
      throw new Error(`HTTP ${r.status}${detail ? ': ' + detail : ''}`);
    }
    return r.json();
  },

  async health() {
    try {
      const r = await fetch('/api/health');
      if (!r.ok) return { status: 'error' };
      return r.json();
    } catch { return { status: 'offline' }; }
  },

  async hypergraph() {
    try {
      const r = await fetch('/api/hypergraph');
      if (!r.ok) return { nodes: [], edges: [], node_count: 0, edge_count: 0 };
      return r.json();
    } catch {
      return { nodes: [], edges: [], node_count: 0, edge_count: 0 };
    }
  },

  async nodeDetail(id) {
    try {
      const r = await fetch('/api/node/' + encodeURIComponent(id));
      if (!r.ok) return null;
      return r.json();
    } catch { return null; }
  },

  async reset() {
    try {
      const r = await fetch('/api/reset', { method: 'POST' });
      return r.ok ? r.json() : { status: 'error' };
    } catch { return { status: 'offline' }; }
  },
};