<?php

namespace app\api\controller;

use think\Db;

/**
 * 后台管理端 · 订单管理（Module-ADM-ORDER）
 * 路由：
 *   GET  /api/v1/admin/orders             AO1 订单列表
 *   POST /api/v1/admin/order/:id/refund   AO2 订单退款
 *   POST /api/v1/admin/order/supplement   AO3 订单补单
 */
class AdminOrder extends V1
{
    /**
     * AO1 订单列表
     * GET /api/v1/admin/orders 入参 {type?,page,size}
     * → 分页 {list:[{id,orderNo,type,title,amount,payType,status,userId,userName,createdAt}],page,size,total,hasMore}
     */
    public function index()
    {
        $type = trim((string)$this->input('type', ''));

        // 闭包重建查询：TP5.0 的 count() 会清空 Query::options，不能复用同一对象
        list($rows, $total, $page, $size) = $this->pageQuery(function ($forCount) use ($type) {
            $q = Db::name('fc_order')->alias('o')
                ->join('user u', 'u.id = o.user_id', 'LEFT');
            if ($type !== '') {
                $q->where('o.type', $type);
            }
            if ($forCount) {
                return $q;
            }
            return $q->field('o.*, u.nickname AS nickname')
                ->order('o.createtime desc');
        });

        $list = [];
        foreach ($rows as $row) {
            $list[] = [
                'id'        => (int)$row['id'],
                'orderNo'   => (string)$row['order_no'],
                'type'      => (string)$row['type'],
                'title'     => (string)$row['title'],
                'amount'    => (float)$row['amount'],
                'payType'   => (string)$row['pay_type'],
                'status'    => (string)$row['status'],
                'userId'    => (int)$row['user_id'],
                'userName'  => (string)$row['nickname'],
                'createdAt' => $this->iso($row['createtime']),
            ];
        }

        $this->ok($this->paginate($list, $total, $page, $size));
    }

    /**
     * AO2 订单退款
     * POST /api/v1/admin/order/:id/refund 入参 {amount,reason?} → {id,refunded}
     * 规则 BR-10：退款金额需大于 0
     */
    public function refund()
    {
        $id = (int)$this->request->param('id', 0);
        $amount = round((float)$this->input('amount', 0), 2);
        $reason = trim((string)$this->input('reason', ''));

        if ($amount <= 0) {
            $this->fail('退款金额需大于 0');
        }

        $order = Db::name('fc_order')->where('id', $id)->find();
        if (!$order) {
            $this->fail('订单不存在', 404);
        }

        Db::name('fc_order')->where('id', $id)->update([
            'status'        => 'refunded',
            'refund_amount' => $amount,
            'refund_reason' => $reason,
        ]);

        $this->notify($order['user_id'], 'system', '订单已退款', '您的订单「' . $order['title'] . '」已退款 ' . $amount . ' 元。');
        $this->adminLog('订单退款 #' . $id . ' 金额' . $amount);

        $this->ok(['id' => (int)$id, 'refunded' => true]);
    }

    /**
     * AO3 订单补单
     * POST /api/v1/admin/order/supplement 入参 {orderNo} → {orderNo,supplemented}
     * 幂等：已支付直接返回
     */
    public function supplement()
    {
        $orderNo = trim((string)$this->input('orderNo', ''));
        if ($orderNo === '') {
            $this->fail('订单号不能为空');
        }

        $order = Db::name('fc_order')->where('order_no', $orderNo)->find();
        if (!$order) {
            $this->fail('订单不存在', 404);
        }

        if ($order['status'] !== 'paid') {
            Db::name('fc_order')->where('id', $order['id'])->update([
                'status'  => 'paid',
                'paytime' => time(),
            ]);
            $this->flow('income', '订单补单', $order['amount'], 0, $order['id']);
            $this->adminLog('订单补单 #' . $orderNo);
        }

        $this->ok(['orderNo' => (string)$orderNo, 'supplemented' => true]);
    }
}