// Thin fetch wrappers for all backend endpoints

async function request(method, path, body) {
  const opts = {
    method,
    headers: { 'Content-Type': 'application/json' },
  };
  if (body !== undefined) opts.body = JSON.stringify(body);
  const resp = await fetch(path, opts);
  const data = await resp.json().catch(() => ({}));
  if (!resp.ok) {
    const msg = data.detail || data.error || `HTTP ${resp.status}`;
    throw Object.assign(new Error(msg), { status: resp.status, data });
  }
  return data;
}

const GET  = path        => request('GET',  path);
const POST = (path, body) => request('POST', path, body);
const PUT  = (path, body) => request('PUT',  path, body);

export const api = {

  // ── Auth ──────────────────────────────────────────────────────────────────
  auth: {
    status() {
      return GET('/api/auth/status');
    },
    connectAdobe() {
      return GET('/api/auth/adobe/connect');
    },
    adobeUrl() {
      return GET('/api/auth/adobe/url');
    },
    exchangeAdobe(redirectUrl) {
      return POST('/api/auth/adobe/exchange', { redirect_url: redirectUrl });
    },
    connectDocusign() {
      return GET('/api/auth/docusign/connect');
    },
    disconnect(platform) {
      return GET(`/api/auth/${platform}/disconnect`);
    },
  },

  // ── Templates ─────────────────────────────────────────────────────────────
  templates: {
    status() {
      return GET('/api/templates/status');
    },
    adobe() {
      return GET('/api/templates/adobe');
    },
    docusign() {
      return GET('/api/templates/docusign');
    },
  },

  // ── Migration ─────────────────────────────────────────────────────────────
  migrate: {
    run(body) {
      return POST('/api/migrate', body);
    },
    batch(body) {
      return POST('/api/migrate/batch', body);
    },
    batchStatus(jobId) {
      return GET(`/api/migrate/batch/${jobId}`);
    },
    history() {
      return GET('/api/migrate/history');
    },
  },

  // ── Verification ──────────────────────────────────────────────────────────
  verify: {
    send(templateId, recipientName, recipientEmail) {
      return POST('/api/verify/send', {
        template_id: templateId,
        recipient_name: recipientName,
        recipient_email: recipientEmail,
      });
    },
    status(envelopeId) {
      return GET(`/api/verify/status/${envelopeId}`);
    },
    void(envelopeId, reason = 'Test envelope — voided after verification') {
      return POST(`/api/verify/void/${envelopeId}`, { reason });
    },
  },

};