<?php

namespace app\api\controller;

use app\common\library\WithdrawText;
use think\Db;

/**
 * 用户端 · 分销中心（Module-DIST）
 * 路由：
 *   GET  /api/v1/distribution/overview          D1 分销概览
 *   GET  /api/v1/distribution/team              D2 我的团队
 *   GET  /api/v1/distribution/commissions       D3 分销收益明细
 *   GET  /api/v1/distribution/poster            D4 推广海报要素
 *   POST /api/v1/distribution/withdraw          D5 申请提现
 *   GET  /api/v1/distribution/withdraw-records   D6 提现记录
 */
class Distribution extends V1
{
    /**
     * D1 分销概览
     * GET /api/v1/distribution/overview
     * 获取用户分销核心资产数据、团队人数与分销基础配置
     *
     * @return void 输出包含累计佣金、已结算、待结算、可提现、今日收益、邀请码及分销规则配置的JSON响应
     */
    public function overview()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];

        $total = (float)Db::name('fc_commission')->where('user_id', $uid)->where('status', '<>', 2)->sum('amount');
        $settled = (float)Db::name('fc_commission')->where('user_id', $uid)->where('status', 1)->sum('amount');
        $pending = (float)Db::name('fc_commission')->where('user_id', $uid)->where('status', 0)->sum('amount');
        $applied = (float)Db::name('fc_withdraw')->where('user_id', $uid)
            ->where('status', 'in', ['auditing', 'paying', 'paid'])->sum('amount');
        $withdrawable = $settled - $applied;

        $todayStart = strtotime(date('Y-m-d'));
        $todayCommission = (float)Db::name('fc_commission')->where('user_id', $uid)
            ->where('createtime', '>=', $todayStart)->sum('amount');

        $l1 = (int)Db::name('fc_dist_relation')->where('parent_id', $uid)->where('level', 1)->count();
        $l2 = (int)Db::name('fc_dist_relation')->where('parent_id', $uid)->where('level', 2)->count();

        $ext = $this->ext($uid);
        $code = (string)$ext['invite_code'];
        $shareUrl = 'https://fenleixinxi.gzyakj.com.cn/#/pages/index/index?ic=' . urlencode($code);

        // 查询当前用户的上级推荐人信息（用于前端展示「已绑定推荐人」或「手动绑定邀请码」入口）
        $inviterId = (int)(isset($ext['inviter_id']) ? $ext['inviter_id'] : 0);
        if ($inviterId <= 0) {
            $l1Rel = Db::name('fc_dist_relation')->where('user_id', $uid)->where('level', 1)->find();
            if ($l1Rel && (int)$l1Rel['parent_id'] > 0) {
                $inviterId = (int)$l1Rel['parent_id'];
            }
        }
        $inviterNickname = '';
        if ($inviterId > 0) {
            $inviterUser = Db::name('user')->where('id', $inviterId)->field('nickname,username')->find();
            if ($inviterUser) {
                $inviterNickname = (string)($inviterUser['nickname'] ?: $inviterUser['username']);
            }
        }

        // 商家转账确认收款页需要的商户号与小程序 AppID（非敏感，可下发）
        $epay = (array)get_addon_config('epay');
        $wx   = isset($epay['wechat']) && is_array($epay['wechat']) ? $epay['wechat'] : [];

        $this->ok([
            'totalCommission'   => round($total, 2),
            'settled'           => round($settled, 2),
            'pendingCommission' => round($pending, 2),
            'withdrawable'      => round(max(0, $withdrawable), 2),
            'todayCommission'   => round($todayCommission, 2),
            'teamCount'         => $l1 + $l2,
            'l1Count'           => $l1,
            'l2Count'           => $l2,
            'inviteCode'        => $code,
            'inviterId'         => $inviterId,
            'inviterNickname'   => $inviterNickname,
            'shareUrl'          => $shareUrl,
            'posterUrl'         => '',
            // 最低提现金额（后台「分销设置」下发，微信审核规范要求无门槛，默认 0.1）
            'minWithdraw'       => (float)$this->cfg('dist.minWithdraw', 0.1),
            // 分销比例与配置规则
            'level1Rate'        => (float)$this->cfg('dist.level1Rate', 20),
            'level2Rate'        => (float)$this->cfg('dist.level2Rate', 10),
            'settleCycle'       => (string)$this->cfg('dist.settleCycle', '实时结算'),
            'ruleContent'       => (string)$this->cfg('dist.ruleContent', ''),
            'enabled'           => (int)$this->cfg('dist.enabled', 1),
            // 提现收款人实名（未填写时前端需先采集）
            'realname'          => isset($ext['realname']) ? (string)$ext['realname'] : '',
            'transferMchId'     => isset($wx['mch_id']) ? (string)$wx['mch_id'] : '',
            'transferAppId'     => isset($wx['miniapp_id']) ? (string)$wx['miniapp_id'] : '',
        ]);
    }

    /**
     * D2 我的团队
     * GET /api/v1/distribution/team 入参 {level?,page,size}
     * 分页查询直推（1级）和间推（2级）下线团队成员
     *
     * @return void 输出团队成员分页列表JSON
     */
    public function team()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];
        $level = $this->input('level', '');

        // 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 ($uid, $level) {
            $q = Db::name('fc_dist_relation')->alias('r')
                ->join('user u', 'u.id = r.user_id')
                ->where('r.parent_id', $uid);
            if ($level !== '' && $level !== null) {
                $q->where('r.level', (int)$level);
            }
            if ($forCount) {
                return $q;
            }
            return $q->field('r.id,r.user_id,r.level,r.createtime,u.nickname,u.avatar,u.mobile')
                ->order('r.createtime desc');
        });

        $list = [];
        foreach ($rows as $row) {
            $childId = (int)$row['user_id'];
            $commission = (float)Db::name('fc_commission')
                ->where('user_id', $uid)
                ->where('from_user_id', $childId)
                ->sum('amount');
            $orderAmount = (float)Db::name('fc_order')
                ->where('user_id', $childId)
                ->where('status', 'paid')
                ->sum('amount');
            $performance = $orderAmount > 0 ? $orderAmount : $commission * 5;

            $mobile = (string)(isset($row['mobile']) ? $row['mobile'] : '');
            $maskedMobile = (strlen($mobile) === 11) ? substr($mobile, 0, 3) . '****' . substr($mobile, -4) : '';

            $list[] = [
                'id'          => $childId,
                'nickname'    => (string)$row['nickname'],
                'avatar'      => (string)(isset($row['avatar']) ? $row['avatar'] : ''),
                'mobile'      => $maskedMobile,
                'level'       => (int)$row['level'],
                'joinedAt'    => $this->iso($row['createtime']),
                'performance' => round($performance, 2),
                'commission'  => round($commission, 2),
            ];
        }

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

    /**
     * D3 分销收益明细（佣金流水账单）
     * GET /api/v1/distribution/commissions 入参 {status?,level?,page,size}
     * 分页查询下线消费产生的佣金记录明细及结算状态
     *
     * @return void 输出佣金明细列表与汇总统计JSON
     */
    public function commissions()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];
        $status = $this->input('status', '');
        $level = $this->input('level', '');

        list($rows, $total, $page, $size) = $this->pageQuery(function ($forCount) use ($uid, $status, $level) {
            $q = Db::name('fc_commission')->alias('c')
                ->join('user u', 'u.id = c.from_user_id', 'LEFT')
                ->join('fc_order o', 'o.order_no = c.order_no', 'LEFT')
                ->where('c.user_id', $uid);

            if ($status !== '' && $status !== null) {
                $q->where('c.status', (int)$status);
            }
            if ($level !== '' && $level !== null) {
                $q->where('c.level', (int)$level);
            }
            if ($forCount) {
                return $q;
            }
            return $q->field('c.*,u.nickname as from_nickname,u.avatar as from_avatar,o.title as order_title,o.amount as order_amount')
                ->order('c.createtime desc');
        });

        $typeMap = [
            'post'     => '信息发布/置顶',
            'member'   => 'VIP会员购买',
            'payview'  => '付费查看信息',
            'refresh'  => '信息一键刷新',
            'merchant' => '商家认证入驻',
        ];

        $statusMap = [
            0 => '待结算',
            1 => '已结算',
            2 => '已失效',
        ];

        $list = [];
        foreach ($rows as $row) {
            $orderType = (string)(isset($row['order_type']) ? $row['order_type'] : 'post');
            $st = (int)$row['status'];
            $list[] = [
                'id'            => (int)$row['id'],
                'orderNo'       => (string)$row['order_no'],
                'orderType'     => $orderType,
                'orderTypeName' => isset($typeMap[$orderType]) ? $typeMap[$orderType] : (isset($row['order_title']) && $row['order_title'] ? $row['order_title'] : '同城消费'),
                'orderAmount'   => round((float)(isset($row['order_amount']) ? $row['order_amount'] : 0), 2),
                'amount'        => round((float)$row['amount'], 2),
                'rate'          => (float)$row['rate'],
                'level'         => (int)$row['level'],
                'status'        => $st,
                'statusText'    => isset($statusMap[$st]) ? $statusMap[$st] : '处理中',
                'settleDue'     => !empty($row['settle_due']) ? $this->iso($row['settle_due']) : '',
                'settletime'    => !empty($row['settletime']) ? $this->iso($row['settletime']) : '',
                'createdAt'     => $this->iso($row['createtime']),
                'fromUser'      => [
                    'id'       => (int)$row['from_user_id'],
                    'nickname' => (string)(isset($row['from_nickname']) && $row['from_nickname'] !== '' ? $row['from_nickname'] : '同城好友'),
                    'avatar'   => (string)(isset($row['from_avatar']) ? $row['from_avatar'] : ''),
                ],
            ];
        }

        $res = $this->paginate($list, $total, $page, $size);
        $res['summary'] = [
            'totalCommission'   => round((float)Db::name('fc_commission')->where('user_id', $uid)->where('status', '<>', 2)->sum('amount'), 2),
            'settledCommission' => round((float)Db::name('fc_commission')->where('user_id', $uid)->where('status', 1)->sum('amount'), 2),
            'pendingCommission' => round((float)Db::name('fc_commission')->where('user_id', $uid)->where('status', 0)->sum('amount'), 2),
        ];

        $this->ok($res);
    }

    /**
     * D4 分销海报生成要素
     * GET /api/v1/distribution/poster
     * 获取用于前端合成或分享专属推广海报的元数据（含官方小程序码 URL，支持传入 postId 生成详情页小程序码）
     *
     * @return void 输出海报配置与素材信息的JSON
     */
    public function poster()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];
        $ext = $this->ext($uid);

        $siteName = (string)$this->cfg('app.name', '同城分类信息');
        $slogan   = (string)$this->cfg('dist.slogan', '同城便民生活 · 随时随地发布与求助');
        $code     = (string)$ext['invite_code'];
        $postId   = (int)$this->input('postId', 0);

        if ($postId > 0) {
            $scene = 'id_' . $postId . '_u_' . $uid;
            $page  = 'pages/detail/detail';
        } else {
            $scene = 'ic_' . $code;
            $page  = 'pages/index/index';
        }
        $wxacodeUrl = \app\common\library\WxMini::wxacodeUnlimit($scene, $page, 280);

        $this->ok([
            'inviteCode' => $code,
            'siteName'   => $siteName,
            'slogan'     => $slogan,
            'nickname'   => (string)(isset($user['nickname']) && $user['nickname'] !== '' ? $user['nickname'] : '同城合伙人'),
            'avatar'     => (string)(isset($user['avatar']) ? $user['avatar'] : ''),
            'path'       => $postId > 0 ? ('pages/detail/detail?id=' . $postId . '&ic=' . $code) : ('pages/index/index?ic=' . $code),
            'wxacodeUrl' => $wxacodeUrl,
        ]);
    }

    /**
     * D5 申请提现
     * POST /api/v1/distribution/withdraw 入参 {amount,channel?} → {withdrawNo,status:'auditing'}
     * 规则 BR-09：金额必填且 >0、且不超过可提现余额
     *
     * @return void 输出提现单号与状态JSON
     */
    public function withdraw()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];
        $this->rateLimit('withdraw:' . $uid, 3, 60);

        $amount = round((float)$this->input('amount', 0), 2);
        $min = (float)$this->cfg('dist.minWithdraw', 0.1);

        if ($amount <= 0) {
            $this->fail('提现金额不合法');
        }
        if ($min > 0 && $amount < $min) {
            $this->fail('最低提现金额为 ' . $min . ' 元');
        }

        // 微信商家转账会校验收款人实名，未填写姓名不允许提现
        $ext = $this->ext($uid);
        if (trim((string)(isset($ext['realname']) ? $ext['realname'] : '')) === '') {
            $this->fail('请先填写收款人真实姓名（需与微信实名一致）');
        }

        $channel = trim((string)$this->input('channel', ''));
        if ($channel === '') {
            $channel = 'wxpay';
        }
        $withdrawNo = $this->orderNo('WD');

        try {
            Db::transaction(function () use ($uid, $amount, $channel, $withdrawNo) {
                // 用户扩展行加锁：同一用户的提现申请串行化，避免并发双花
                Db::name('fc_user_ext')->where('user_id', $uid)->lock(true)->find();

                if ($amount > $this->withdrawable($uid)) {
                    throw new \RuntimeException('提现金额超过可提现余额');
                }

                Db::name('fc_withdraw')->insert([
                    'withdraw_no' => $withdrawNo,
                    'user_id'     => $uid,
                    'amount'      => $amount,
                    'channel'     => $channel,
                    'status'      => 'auditing',
                    'reason'      => '',
                    'paytime'     => null,
                    'createtime'  => time(),
                    'updatetime'  => time(),
                ]);
            });
        } catch (\Throwable $e) {
            $this->fail($e->getMessage() ?: '提现申请失败，请重试');
        }

        $this->notify($uid, 'system', '提现申请已提交', '提现 ¥' . $amount . ' 已提交，预计 T+7 到账');

        $this->ok(['withdrawNo' => $withdrawNo, 'status' => 'auditing']);
    }

    /**
     * D6 提现记录
     * GET /api/v1/distribution/withdraw-records → [{id,withdrawNo,amount,status,createdAt}]
     * 获取当前用户的历史提现记录与商家转账确认参数
     *
     * @return void 输出提现历史记录列表JSON
     */
    public function withdrawRecords()
    {
        $user = $this->auth();
        $rows = Db::name('fc_withdraw')->where('user_id', $user['id'])
            ->order('createtime desc')->select();

        $epay = (array)get_addon_config('epay');
        $wx   = isset($epay['wechat']) && is_array($epay['wechat']) ? $epay['wechat'] : [];
        $mchId = isset($wx['mch_id']) ? (string)$wx['mch_id'] : '1118898018';
        $appId = isset($wx['miniapp_id']) ? (string)$wx['miniapp_id'] : 'wxbfcb778f3019cff8';

        $list = [];
        foreach ($rows as $row) {
            $list[] = [
                'id'             => (int)$row['id'],
                'withdrawNo'     => (string)$row['withdraw_no'],
                'amount'         => round((float)$row['amount'], 2),
                'status'         => (string)$row['status'],
                'transferStatus' => (string)(isset($row['transfer_status']) ? $row['transfer_status'] : ''),
                'packageInfo'    => (string)(isset($row['package_info']) ? $row['package_info'] : ''),
                'failReason'     => WithdrawText::fail(isset($row['fail_reason']) ? $row['fail_reason'] : ''),
                'createdAt'      => $this->iso($row['createtime']),
                'transferMchId'  => $mchId,
                'transferAppId'  => $appId,
            ];
        }

        $this->ok($list);
    }

    /**
     * D8 提现单详情
     * GET /api/v1/distribution/withdraw-detail 入参 {id|withdrawNo}
     *
     * @return void 输出提现流水单据详细信息JSON
     */
    public function withdrawDetail()
    {
        $user = $this->auth();
        $id = (int)$this->input('id', 0);
        $no = trim((string)$this->input('withdrawNo', ''));

        $query = Db::name('fc_withdraw')->where('user_id', $user['id']);
        if ($id > 0) {
            $query->where('id', $id);
        } elseif ($no !== '') {
            $query->where('withdraw_no', $no);
        } else {
            $this->fail('参数错误');
        }

        $row = $query->find();
        if (!$row) {
            $this->fail('提现记录不存在');
        }

        $epay = (array)get_addon_config('epay');
        $wx   = isset($epay['wechat']) && is_array($epay['wechat']) ? $epay['wechat'] : [];
        $mchId = isset($wx['mch_id']) ? (string)$wx['mch_id'] : '1118898018';
        $appId = isset($wx['miniapp_id']) ? (string)$wx['miniapp_id'] : 'wxbfcb778f3019cff8';

        $this->ok([
            'id'             => (int)$row['id'],
            'withdrawNo'     => (string)$row['withdraw_no'],
            'amount'         => round((float)$row['amount'], 2),
            'channel'        => (string)$row['channel'],
            'status'         => (string)$row['status'],
            'reason'         => WithdrawText::reason($row['reason']),
            'outBillNo'      => (string)$row['out_bill_no'],
            'transferStatus' => (string)$row['transfer_status'],
            'transferId'     => (string)$row['transfer_id'],
            'packageInfo'    => (string)$row['package_info'],
            'failReason'     => WithdrawText::fail($row['fail_reason']),
            'createdAt'      => $this->iso($row['createtime']),
            'payTime'        => !empty($row['paytime']) ? $this->iso($row['paytime']) : '',
            'transferTime'   => !empty($row['transfer_time']) ? $this->iso($row['transfer_time']) : '',
            'transferMchId'  => $mchId,
            'transferAppId'  => $appId,
        ]);
    }

    /**
     * D7 手动输入邀请码补绑推荐人（老用户不支持自动补绑，仅支持通过手动填写邀请码完成补绑）
     * POST /api/v1/distribution/bind 入参 {inviteCode}
     *
     * @return void 输出绑定结果与推荐人信息JSON
     */
    public function bind()
    {
        $user = $this->auth();
        $uid = (int)$user['id'];

        $inviteCode = strtoupper(trim((string)$this->input('inviteCode', $this->input('invite_code', ''))));
        if ($inviteCode === '') {
            $this->fail('请输入有效的邀请码');
        }

        // 检查当前用户是否已绑定过推荐人
        $ext = $this->ext($uid);
        $existingInviter = (int)(isset($ext['inviter_id']) ? $ext['inviter_id'] : 0);
        if ($existingInviter <= 0) {
            $l1Rel = Db::name('fc_dist_relation')->where('user_id', $uid)->where('level', 1)->find();
            if ($l1Rel && (int)$l1Rel['parent_id'] > 0) {
                $existingInviter = (int)$l1Rel['parent_id'];
            }
        }
        if ($existingInviter > 0) {
            $this->fail('您已绑定过推荐人，不可重复绑定');
        }

        // 校验邀请码并定位目标推荐人
        if (isset($ext['invite_code']) && strtoupper((string)$ext['invite_code']) === $inviteCode) {
            $this->fail('不能填写自己的邀请码');
        }
        $parentExt = Db::name('fc_user_ext')->where('invite_code', $inviteCode)->find();
        if (!$parentExt || (int)$parentExt['user_id'] <= 0) {
            $this->fail('邀请码不存在，请核对后重试');
        }
        $targetInviterId = (int)$parentExt['user_id'];
        if ($targetInviterId === $uid) {
            $this->fail('不能绑定自己为推荐人');
        }

        // 防环校验：不能绑定自己的下级成员
        $isDownline = Db::name('fc_dist_relation')
            ->where('user_id', $targetInviterId)
            ->where('parent_id', $uid)
            ->count();
        if ($isDownline > 0) {
            $this->fail('不能绑定您的下级成员为推荐人');
        }

        $ok = \app\common\library\DistributionService::bindRelation($uid, $targetInviterId, $inviteCode);
        if (!$ok) {
            $this->fail('绑定失败，请核对邀请码后重试');
        }

        $inviterUser = Db::name('user')->where('id', $targetInviterId)->field('nickname,username')->find();
        $inviterNickname = $inviterUser ? (string)($inviterUser['nickname'] ?: $inviterUser['username']) : '同城合伙人';

        $this->ok([
            'bound'           => true,
            'inviterId'       => $targetInviterId,
            'inviterNickname' => $inviterNickname,
        ]);
    }

    /**
     * 计算当前用户可提现余额
     * 可提现余额 = Σ已结算佣金(status=1) - Σ(申请中/已打款)提现
     *
     * @param int $uid 用户ID
     * @return float 可提现余额数值
     */
    protected function withdrawable($uid)
    {
        $settled = (float)Db::name('fc_commission')->where('user_id', $uid)->where('status', 1)->sum('amount');
        $applied = (float)Db::name('fc_withdraw')->where('user_id', $uid)
            ->where('status', 'in', ['auditing', 'paying', 'paid'])->sum('amount');
        return $settled - $applied;
    }
}