/**
 * 本地直接确认支付：检测到 paid 后立即写入 PocketBase，不依赖 salonapi
 * 用于扫码页 doConfirm，避免「检测到支付，正在确认…」等待过久
 */
import { NextRequest, NextResponse } from "next/server";
import { getAdminToken } from "@/app/lib/pocketbase/admin";
import { getPocketBaseConfig, SITE_ID } from "@/config/services.config";
import { queryZPayOrderStatus } from "@/app/lib/zpayStatus";
import { queryXorPayOrderStatus } from "@/app/lib/xorpayStatus";

function parseOrderId(orderId: string): { userId: string; payType: string } {
  const id = (orderId || "").trim();
  if (!id.includes("_order_")) return { userId: "", payType: "unknown" };
  const prefix = id.split("_order_")[0];
  const lastUnderscore = prefix.lastIndexOf("_");
  if (lastUnderscore > 0) {
    return {
      userId: prefix.substring(0, lastUnderscore),
      payType: prefix.substring(lastUnderscore + 1).toLowerCase(),
    };
  }
  return { userId: prefix, payType: "unknown" };
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json().catch(() => ({}));
    const orderId = String(body?.order_id || "").trim();
    if (!orderId) {
      return NextResponse.json({ ok: false, error: "缺少 order_id" }, { status: 400 });
    }

    const { userId, payType } = parseOrderId(orderId);
    if (!userId || payType !== "salon") {
      return NextResponse.json({ ok: false, error: "订单格式无效" }, { status: 400 });
    }

    const [zpay, xorpay] = await Promise.all([
      queryZPayOrderStatus(orderId, 5000),
      queryXorPayOrderStatus(orderId, 5000),
    ]);

    const paid = zpay?.paid || xorpay?.paid;
    if (!paid) {
      return NextResponse.json({ ok: false, error: "订单未支付" }, { status: 400 });
    }

    const moneyYuan = parseFloat(zpay?.money || xorpay?.payPrice || "0") || 0;
    const amountCents = moneyYuan > 0 ? Math.round(moneyYuan * 100) : 100;

    const token = await getAdminToken();
    if (!token) {
      return NextResponse.json({ ok: false, error: "PocketBase 未配置" }, { status: 503 });
    }

    const pb = getPocketBaseConfig();
    const base = pb.url.replace(/\/$/, "");

    const escapedUserId = userId.replace(/\\/g, "\\\\").replace(/"/g, '\\"');
    const filter = encodeURIComponent(`user_id = "${escapedUserId}"`);

    const listRes = await fetch(
      `${base}/api/collections/${pb.joinCollection}/records?filter=${filter}&sort=-created&perPage=1`,
      {
        headers: { Authorization: `Bearer ${token}` },
        cache: "no-store",
      }
    );

    if (!listRes.ok) {
      return NextResponse.json({ ok: false, error: "查询记录失败" }, { status: 500 });
    }

    const listData = await listRes.json().catch(() => ({}));
    const items = Array.isArray(listData?.items) ? listData.items : [];
    const rec = items[0] ?? null;

    if (rec?.id) {
      const patchRes = await fetch(
        `${base}/api/collections/${pb.joinCollection}/records/${rec.id}`,
        {
          method: "PATCH",
          headers: {
            "Content-Type": "application/json",
            Authorization: `Bearer ${token}`,
          },
          body: JSON.stringify({
            order_id: orderId,
            amount: amountCents,
            vip: true,
          }),
        }
      );
      if (!patchRes.ok) {
        const err = await patchRes.json().catch(() => ({}));
        console.warn("[pay/complete-order] solanRed patch failed:", patchRes.status, err);
      }
    }

    const siteVipFilter = encodeURIComponent(
      `user_id = "${escapedUserId}" && site_id = "${SITE_ID}"`
    );
    const siteVipList = await fetch(
      `${base}/api/collections/site_vip/records?filter=${siteVipFilter}&perPage=1`,
      {
        headers: { Authorization: `Bearer ${token}` },
        cache: "no-store",
      }
    );

    if (siteVipList.ok) {
      const svData = await siteVipList.json().catch(() => ({}));
      const svItems = svData?.items ?? [];
      if (svItems.length > 0) {
        await fetch(
          `${base}/api/collections/site_vip/records/${svItems[0].id}`,
          {
            method: "PATCH",
            headers: {
              "Content-Type": "application/json",
              Authorization: `Bearer ${token}`,
            },
            body: JSON.stringify({ order_id: orderId }),
          }
        );
      } else {
        await fetch(`${base}/api/collections/site_vip/records`, {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
            Authorization: `Bearer ${token}`,
          },
          body: JSON.stringify({
            user_id: userId,
            site_id: SITE_ID,
            order_id: orderId,
            expires_at: "",
          }),
        });
      }
    }

    return NextResponse.json({ ok: true });
  } catch (error) {
    console.error("[pay/complete-order] error:", error);
    return NextResponse.json(
      { ok: false, error: error instanceof Error ? error.message : "操作失败" },
      { status: 500 }
    );
  }
}