<?php

namespace app\api\controller;

use think\Db;

/**
 * 用户端 · 会员中心（Module-MEMBER）
 * 路由：
 *   GET  /api/v1/member/plans      M1 会员套餐
 *   GET  /api/v1/member/benefits   M2 会员权益
 *   POST /api/v1/member/open       M3 开通会员
 *   GET  /api/v1/member/orders     M4 我的订单
 *   GET  /api/v1/member/assets     M5 我的资产
 */
class Member extends V1
{
    /**
     * M1 会员套餐
     * GET /api/v1/member/plans  →  [{planId,name,price,originPrice,days,tag}]
     * 规则：仅 enabled=1，按 sort asc
     */
    public function plans()
    {
        $rows = Db::name('fc_plan')
            ->where('enabled', 1)
            ->order('sort asc')
            ->select();

        $list = [];
        foreach ($rows as $row) {
            $list[] = [
                'planId'      => (string)$row['plan_code'],
                'name'        => (string)$row['name'],
                'price'       => (float)$row['price'],
                'originPrice' => (float)$row['origin_price'],
                'days'        => (int)$row['days'],
                'tag'         => (string)$row['tag'],
                // 套餐含发布条数（后台「发布与费用配置」同步；0 表示不含发布额度）
                'postQuota'   => isset($row['post_quota']) ? (int)$row['post_quota'] : 0,
            ];
        }
        $this->ok($list);
    }

    /**
     * M2 会员权益
     * GET /api/v1/member/benefits  →  {freeView,postDiscount,distRate,benefits[]}
     * 规则：读配置 member.benefit，未配置返回默认
     */
    public function benefits()
    {
        $default = [
            'freeView'     => 20,
            'postDiscount' => '8 折',
            'distRate'     => '一级 20% / 二级 10%',
            'benefits'     => ['每日免费查看 20 条联系方式', '发布信息 8 折', '专属会员标识', '分销佣金加速结算'],
        ];

        $cfg = $this->cfg('member.benefit', null);
        if (!is_array($cfg)) {
            $cfg = $default;
        }

        $benefits = isset($cfg['benefits']) && is_array($cfg['benefits']) && $cfg['benefits']
            ? array_values($cfg['benefits'])
            : $default['benefits'];

        $this->ok([
            'freeView'     => isset($cfg['freeView']) ? (int)$cfg['freeView'] : $default['freeView'],
            'postDiscount' => isset($cfg['postDiscount']) ? (string)$cfg['postDiscount'] : $default['postDiscount'],
            'distRate'     => isset($cfg['distRate']) ? (string)$cfg['distRate'] : $default['distRate'],
            'benefits'     => $benefits,
        ]);
    }

    /**
     * M3 开通会员
     * POST /api/v1/member/open  {planId,payType}
     *   →  {orderNo,status,order,expireAt,postQuota,quotaLeft,quotaExpireAt}
     *   - balance：余额支付，下单即扣款并**立即发放会员**（status=paid，order=null）
     *   - wxpay  ：订单 pending（order={orderNo,amount,payType,status:'pending'}），
     *              前端拿 orderNo 调 POST /pay/prepay 调起收银台，支付成功后由 /pay/notify 发放会员
     * 规则 BR-07；套餐按 plan_code 查；金额取 fc_plan.price（服务端计算，忽略客户端传值）
     */
    public function open()
    {
        $user = $this->auth();

        $planId = trim((string)$this->input('planId', ''));
        if ($planId === '') {
            $this->fail('请选择会员套餐');
        }

        $payType = (string)$this->input('payType', '');
        if (!in_array($payType, ['wxpay', 'balance'], true)) {
            $this->fail('支付方式不支持');
        }

        $plan = Db::name('fc_plan')->where('plan_code', $planId)->find();
        if (!$plan) {
            $this->fail('套餐不存在');
        }

        $amount = round((float)$plan['price'], 2);
        $now = time();
        $isBalance = $payType === 'balance';

        // 余额校验必须在落订单之前：否则余额不足时已插入一条 status=paid 的假订单
        $balance = (float)$user['money'];
        if ($isBalance && $balance < $amount) {
            $this->fail('余额不足');
        }

        $orderNo = $this->orderNo('MO');
        $orderId = Db::name('fc_order')->insertGetId([
            'order_no'   => $orderNo,
            'user_id'    => $user['id'],
            'type'       => 'member',
            'title'      => (string)$plan['name'],
            'amount'     => $amount,
            'pay_type'   => $payType,
            'status'     => $isBalance ? 'paid' : 'pending',
            'paytime'    => $isBalance ? $now : null,
            // related_id 存套餐主键：支付回调 /pay/notify 据此复用 grantMembership()，回调可独立完成
            'related_id' => (int)$plan['id'],
            'createtime' => $now,
            'updatetime' => $now,
        ]);

        if ($isBalance) {
            $balance = round($balance - $amount, 2);
            Db::name('user')->where('id', $user['id'])->update([
                'money'      => $balance,
                'updatetime' => $now,
            ]);
            // 余额支付：立即发放会员（微信支付等待回调发放）
            $grant = $this->grantMembership(Db::name('fc_order')->where('id', $orderId)->find());
        } else {
            $grant = null;
        }

        $quota = isset($plan['post_quota']) ? max(0, (int)$plan['post_quota']) : 0;
        $this->ok([
            'orderNo'       => $orderNo,
            'status'        => $isBalance ? 'paid' : 'pending',
            // 微信支付：前端拿到 orderNo 后调 /pay/prepay；余额支付无需再支付（order=null）
            'order'         => $isBalance ? null : [
                'orderNo' => $orderNo,
                'amount'  => $amount,
                'payType' => 'wxpay',
                'status'  => 'pending',
            ],
            'expireAt'      => $grant ? $this->iso($grant['expireAt']) : null,
            'postQuota'     => $quota,
            'quotaLeft'     => $grant ? $grant['quotaLeft'] : $this->quotaLeft($this->ext($user['id'])),
            'quotaExpireAt' => $grant ? $this->iso($grant['expireAt']) : null,
        ]);
    }

    /**
     * 会员发放（**可复用**：余额支付即时发放 / 微信支付回调 /pay/notify 发放）
     * 说明：以 fc_order.related_id（套餐主键）反查 fc_plan 取天数与赠送发布条数；
     *      老订单（related_id=0）按订单标题（套餐名）反查，仍失败则按默认 30 天、0 条额度发放；
     *      发放同时记「会员开通」资金流水并发站内信。
     * @param array $order fc_order 行（需含 user_id / related_id / amount / id / title）
     * @return array{expireAt:int,postQuota:int,quotaLeft:int}
     */
    public function grantMembership(array $order)
    {
        $userId = (int)$order['user_id'];
        $now = time();

        $plan = null;
        $planId = (int)(isset($order['related_id']) ? $order['related_id'] : 0);
        if ($planId > 0) {
            $plan = Db::name('fc_plan')->where('id', $planId)->find();
        }
        if (!$plan) {
            $title = isset($order['title']) ? (string)$order['title'] : '';
            if ($title !== '') {
                $plan = Db::name('fc_plan')->where('name', $title)->find();
            }
        }
        $days  = $plan ? max(0, (int)$plan['days']) : 30;
        $quota = $plan && isset($plan['post_quota']) ? max(0, (int)$plan['post_quota']) : 0;
        $level = $plan ? (string)$plan['name'] : '会员';

        $ext = $this->ext($userId);
        $base = (int)$ext['member_expiretime'];
        if ($base < $now) {
            $base = $now;
        }
        $expire = $base + $days * 86400;

        // 发布套餐额度：月/年卡赠送「含发布条数」，额度随会员有效期（过期后由发布接口自动清零）
        $left = (int)(isset($ext['post_quota_left']) ? $ext['post_quota_left'] : 0);
        $quotaExpire = (int)(isset($ext['post_quota_expire']) ? $ext['post_quota_expire'] : 0);
        if ($quotaExpire > 0 && $quotaExpire < $now) {
            $left = 0;          // 上一周期额度已过期，不再累计
        }
        $left += $quota;

        Db::name('fc_user_ext')->where('user_id', $userId)->update([
            'is_member'         => 1,
            'member_level'      => $level,
            'member_expiretime' => $expire,
            'post_quota_left'   => $left,
            'post_quota_expire' => $expire,
            'updatetime'        => $now,
        ]);

        $amount = round((float)(isset($order['amount']) ? $order['amount'] : 0), 2);
        $orderId = (int)(isset($order['id']) ? $order['id'] : 0);
        $this->flow('income', '会员开通', $amount, 0, $orderId);
        $this->notify(
            $userId,
            'system',
            '会员开通成功',
            '您已开通「' . $level . '」，有效期至 ' . date('Y-m-d', $expire) . '，赠送发布条数 ' . $quota . ' 条。'
        );

        return ['expireAt' => $expire, 'postQuota' => $quota, 'quotaLeft' => $left];
    }

    /**
     * 剩余发布条数（供未开通时回显）
     * @param array $ext
     * @return int
     */
    protected function quotaLeft($ext)
    {
        $left = (int)(isset($ext['post_quota_left']) ? $ext['post_quota_left'] : 0);
        $expire = (int)(isset($ext['post_quota_expire']) ? $ext['post_quota_expire'] : 0);
        if ($left > 0 && $expire > 0 && $expire < time()) {
            return 0;
        }
        return $left;
    }

    /**
     * M4 我的订单
     * GET /api/v1/member/orders  {page,size}  →  {list,page,size,total,hasMore}
     * 规则：按 createtime desc
     */
    public function orders()
    {
        $user = $this->auth();
        list($page, $size) = $this->pager();

        $total = Db::name('fc_order')->where('user_id', $user['id'])->count();

        $rows = Db::name('fc_order')
            ->where('user_id', $user['id'])
            ->order('createtime desc')
            ->page($page, $size)
            ->select();

        $list = [];
        foreach ($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'],
                'createdAt' => $this->iso($row['createtime']),
            ];
        }

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

    /**
     * M5 我的资产
     * GET /api/v1/member/assets
     *   →  {balance,coupons:[{id,couponId,name,type,amount,minAmount,status,expireAt}],couponCount,points}
     * 说明：coupons 来自 fc_user_coupon LEFT JOIN fc_coupon（真实数据）；
     *      status：unused 未使用 / used 已使用 / expired 已过期（有效期为 0 表示永久；
     *      status=unused 但已过期时**动态判定**为 expired，无需定时任务）。
     */
    public function assets()
    {
        $user = $this->auth();
        $now = time();

        $rows = Db::name('fc_user_coupon')->alias('uc')
            ->join('fc_coupon c', 'c.id = uc.coupon_id', 'LEFT')
            ->where('uc.user_id', $user['id'])
            ->field('uc.id,uc.coupon_id,uc.status,uc.expiretime,uc.createtime,c.name,c.type,c.amount,c.min_amount')
            ->order('uc.id desc')
            ->select();

        $coupons = [];
        foreach ($rows as $row) {
            $status = (string)$row['status'];
            $expire = !empty($row['expiretime']) ? (int)$row['expiretime'] : 0;
            if ($status === 'unused' && $expire > 0 && $expire < $now) {
                $status = 'expired';
            }
            $coupons[] = [
                'id'        => (int)$row['id'],
                'couponId'  => (int)$row['coupon_id'],
                'name'      => isset($row['name']) ? (string)$row['name'] : '',
                'type'      => isset($row['type']) ? (string)$row['type'] : '',
                'amount'    => isset($row['amount']) ? (float)$row['amount'] : 0,
                'minAmount' => isset($row['min_amount']) ? (float)$row['min_amount'] : 0,
                'status'    => $status,
                'expireAt'  => $expire > 0 ? $this->iso($expire) : null,
            ];
        }

        $this->ok([
            'balance'     => (float)$user['money'],
            'coupons'     => $coupons,
            'couponCount' => count($coupons),
            'points'      => (int)$user['score'],
        ]);
    }
}