/** 共享：完成订单 API 调用与成功后的 session 同步 */

import type { AuthUser } from "@/app/lib/pocketbase";

const WECHAT_STORAGE_KEY = "salon_join_wechat";

export interface CompleteOrderResult {
  ok: boolean;
  token?: string;
  record?: { wechatId?: string; [k: string]: unknown };
  error?: string;
}

/** 调用 complete-order API */
export async function tryCompleteOrder(orderId: string): Promise<CompleteOrderResult> {
  const r = await fetch("/api/salon/complete-order", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ order_id: orderId }),
    credentials: "include",
  });
  const d = await r.json();
  if (!d?.ok) return { ok: false, error: d?.error || d?.detail || `HTTP ${r.status}` };
  return { ok: true, token: d.token, record: d.record };
}

/** 成功后的通用处理：sync-session、pbSaveAuth、dispatch 事件、localStorage wechatId。token 为空时仅 dispatch 和保存 wechatId（非 pending 用户） */
export function applyCompleteSuccess(data: { token?: string; record?: { wechatId?: string; [k: string]: unknown } }): void {
  const { token, record } = data;
  if (token) {
    fetch("/api/auth/sync-session", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ token, record }),
      credentials: "include",
    }).catch(() => {});
    if (record && "id" in record && "email" in record) {
      import("@/app/lib/pocketbase").then(({ pbSaveAuth }) => pbSaveAuth(token, record as AuthUser));
    }
  }
  window.dispatchEvent(new CustomEvent("auth:updated"));
  window.dispatchEvent(new CustomEvent("vip:updated"));
  window.dispatchEvent(new CustomEvent("registration:refresh"));
  if (record?.wechatId) {
    try {
      localStorage.setItem(WECHAT_STORAGE_KEY, record.wechatId);
    } catch {
      /* ignore */
    }
  }
}