/**
 * api/events.js — Client des endpoints Hub /events (vue staff RSVP).
 * Miroir de services/targo-hub/lib/events.js. Passe par le proxy /ops/hub
 * (jeton HUB_SERVICE_TOKEN injecté) → routes /events gatées (PII).
 *
 *   listEvents()                → { events:[{id,name,date_iso,active}] }
 *   listRsvps(eventId)          → { event:{...,public_url}, responses:[], count, headcount, matched, unmatched }
 *   deleteRsvp(eventId, key)    → { ok }
 *   sendInvite(eventId, body)   → envoi d'invitations (GATÉ — non branché pour l'instant)
 */
import { HUB_URL } from 'src/config/hub'

async function hubFetch (path, { method = 'GET', body } = {}) {
  const opts = { method, headers: { 'Content-Type': 'application/json' } }
  if (body) opts.body = JSON.stringify(body)
  const res = await fetch(`${HUB_URL}${path}`, opts)
  const text = await res.text()
  let data
  try { data = text ? JSON.parse(text) : {} } catch { throw new Error(`Réponse invalide de ${path}`) }
  if (!res.ok) throw new Error(data.error || `HTTP ${res.status}`)
  return data
}

export async function listEvents () { return hubFetch('/events') }
export async function listRsvps (eventId) { return hubFetch(`/events/${encodeURIComponent(eventId)}/rsvps`) }
export async function deleteRsvp (eventId, key) { return hubFetch(`/events/${encodeURIComponent(eventId)}/rsvps/${encodeURIComponent(key)}`, { method: 'DELETE' }) }
export async function sendInvite (eventId, body) { return hubFetch(`/events/${encodeURIComponent(eventId)}/send`, { method: 'POST', body }) }
export async function previewAudience (eventId, body) { return hubFetch(`/events/${encodeURIComponent(eventId)}/audience`, { method: 'POST', body }) }
export async function listTemplates () { return hubFetch('/campaigns/templates') }