<?php

namespace app\api\controller;

use think\Db;

/**
 * 用户端 · 商家门店与主页（Module-MERCHANT）
 * 路由：
 *   GET  /api/v1/merchant/:id         M1 商家公开主页/门店详情（手机号隐藏脱敏）
 *   POST /api/v1/merchant/:id/dial    M1-B 商家门店申请拨打电话（校验每日拨打次数上限）
 *   GET  /api/v1/merchant/:id/posts   M2 商家名下发布的信息流（分页）
 */
class Merchant extends V1
{
    /**
     * M1 获取商家门店详情及公开档案
     * GET /api/v1/merchant/:id
     * 规则：允许游客；支持通过 merchant.id 或 user_id 查询；界面隐藏明文手机号，仅保留拨打按钮与免责弹窗
     *
     * @return void
     */
    public function detail()
    {
        $id = (int)$this->routeId();
        if ($id <= 0) {
            $id = (int)$this->input('id', 0) ?: (int)$this->input('userId', 0);
        }
        if ($id <= 0) {
            $this->fail('缺少商家参数', 400);
        }

        // 优先按 merchant.id 查，若未命中再按 user_id 查
        $m = Db::name('fc_merchant')->where('id', $id)->find();
        if (!$m) {
            $m = Db::name('fc_merchant')->where('user_id', $id)->find();
        }
        if (!$m) {
            $this->fail('商家门店不存在', 404);
        }

        // 关联发布者基础信息
        $user = Db::name('user')->where('id', $m['user_id'])->find();
        $userNickname = $user ? (string)$user['nickname'] : '';
        $userAvatar = $user ? (string)$user['avatar'] : '';

        // 统计真实有效发布数量
        $postCount = (int)Db::name('fc_post')
            ->where('user_id', $m['user_id'])
            ->where('status', 1)
            ->where('audit_status', 1)
            ->whereNull('deletetime')
            ->count();

        // 计算用户与门店之间的物理距离（km）
        $clientLat = $this->coord('lat', 90);
        $clientLng = $this->coord('lng', 180);
        $distance = null;
        if ($clientLat !== null && $clientLng !== null && !empty($m['lat']) && !empty($m['lng'])) {
            $distance = $this->calcDistance($clientLat, $clientLng, (float)$m['lat'], (float)$m['lng']);
        }

        // 首屏拉取前 6 条该商家的有效发帖
        $posts = $this->fetchMerchantPosts($m['user_id'], 1, 6);

        // 商家详情页统一隐藏明文手机号（仅返回脱敏号码），通过 POST /merchant/:id/dial 校验每日拨打次数上限
        $rawContact = trim((string)(isset($m['contact']) ? $m['contact'] : ''));
        $isMember = false;
        $isOwner = false;
        $me = $this->user();
        if ($me) {
            $now = time();
            $ext = $this->ext($me['id']);
            $isMember = (int)$ext['is_member'] === 1
                && !empty($ext['member_expiretime']) && (int)$ext['member_expiretime'] > $now;
            $isOwner = (int)$m['user_id'] === (int)$me['id'];
        }

        $callState = $this->callQuotaState($me ? (int)$me['id'] : 0, $isMember);
        $maskedContact = $this->maskPhone($rawContact);
        $dialDisplay = $this->buildDialDisplay($userNickname ?: (string)$m['name'], $rawContact);

        $data = [
            'id'              => (int)$m['id'],
            'userId'          => (int)$m['user_id'],
            'name'            => (string)$m['name'],
            'logo'            => (string)(isset($m['logo']) ? $m['logo'] : ''),
            'banner'          => (string)(isset($m['banner']) ? $m['banner'] : ''),
            'address'         => (string)(isset($m['address']) ? $m['address'] : ''),
            'lat'             => (isset($m['lat']) && $m['lat'] !== null && $m['lat'] !== '') ? (float)$m['lat'] : null,
            'lng'             => (isset($m['lng']) && $m['lng'] !== null && $m['lng'] !== '') ? (float)$m['lng'] : null,
            'contact'         => $maskedContact,
            'hasPhone'        => $rawContact !== '',
            'dialDisplay'     => $dialDisplay,
            'callQuotaTotal'  => $callState['total'],
            'callQuotaUsed'   => $callState['used'],
            'callQuotaLeft'   => $callState['left'],
            'canDial'         => $isOwner || $callState['unlimited'] || $callState['left'] > 0,
            'unlocked'        => false,
            'category'        => (string)(isset($m['category']) ? $m['category'] : ''),
            'notice'          => (string)(isset($m['notice']) ? $m['notice'] : ''),
            'auditStatus'     => (int)$m['audit_status'],
            'verified'        => (int)$m['audit_status'] === 1,
            'licenseVerified' => !empty($m['license']) && (int)$m['audit_status'] === 1,
            'postCount'       => $postCount,
            'distance'        => $distance,
            'userNickname'    => $userNickname,
            'userAvatar'      => $userAvatar,
            'createdAt'       => isset($m['createtime']) ? $this->iso($m['createtime']) : '',
            'posts'           => $posts['list'],
            'hasMorePosts'    => $posts['hasMore'],
        ];

        $this->ok($data);
    }

    /**
     * M1-B 商家详情页申请拨打电话（校验每日拨打次数上限并记录拨打日志）
     * POST /api/v1/merchant/:id/dial
     *   →  {phoneNumber, dialDisplay, callQuotaTotal, callQuotaUsed, callQuotaLeft}
     *
     * @return void
     */
    public function dial()
    {
        $user = $this->auth();
        $id = (int)$this->routeId();
        if ($id <= 0) {
            $id = (int)$this->input('id', 0) ?: (int)$this->input('userId', 0);
        }
        if ($id <= 0) {
            $this->fail('缺少商家参数', 400);
        }

        $m = Db::name('fc_merchant')->where('id', $id)->find();
        if (!$m) {
            $m = Db::name('fc_merchant')->where('user_id', $id)->find();
        }
        if (!$m) {
            $this->fail('商家门店不存在', 404);
        }

        $phone = trim((string)(isset($m['contact']) ? $m['contact'] : ''));
        if ($phone === '') {
            $this->fail('该商家暂未预留联系电话');
        }

        $now = time();
        $ext = $this->ext($user['id']);
        $isMember = (int)$ext['is_member'] === 1
            && !empty($ext['member_expiretime']) && (int)$ext['member_expiretime'] > $now;
        $isOwner = (int)$m['user_id'] === (int)$user['id'];

        $state = $this->callQuotaState((int)$user['id'], $isMember);

        if (!$isOwner && !$state['unlimited'] && $state['left'] <= 0) {
            $msg = $isMember
                ? ('您今日的 VIP 拨打次数已达上限（' . $state['total'] . '次/日）')
                : ('您今日的免费拨打次数已达上限（' . $state['total'] . '次/日），开通 VIP 会员可享每日更多拨打次数');
            $this->fail($msg, 403);
        }

        $today = date('Y-m-d');
        Db::name('fc_call_log')->insert([
            'user_id'     => (int)$user['id'],
            'target_type' => 'merchant',
            'target_id'   => (int)$m['id'],
            'phone'       => $phone,
            'call_date'   => $today,
            'createtime'  => $now,
        ]);

        $newUsed = $state['used'] + 1;
        $newLeft = $state['unlimited'] ? 999 : max(0, $state['total'] - $newUsed);
        $pubUser = Db::name('user')->where('id', $m['user_id'])->find();
        $contactLabel = $pubUser && !empty($pubUser['nickname']) ? (string)$pubUser['nickname'] : (string)$m['name'];

        $this->ok([
            'phoneNumber'    => $phone,
            'dialDisplay'    => $this->buildDialDisplay($contactLabel, $phone),
            'callQuotaTotal' => $state['total'],
            'callQuotaUsed'  => $newUsed,
            'callQuotaLeft'  => $newLeft,
        ]);
    }

    /**
     * 构造免责声明拨打弹窗展示文案（如：王138****8000）
     *
     * @param string $name  联系人或门店名称
     * @param string $phone 手机号
     * @return string
     */
    protected function buildDialDisplay($name, $phone)
    {
        $masked = $this->maskPhone($phone);
        $clean = trim((string)$name);
        if ($clean === '') {
            return $masked;
        }
        $surname = mb_substr($clean, 0, 1, 'UTF-8');
        return $surname . $masked;
    }

    /**
     * 计算指定用户今日的电话拨打额度状态
     *
     * @param int  $userId   用户ID（0表示游客）
     * @param bool $isMember 是否为有效期内VIP会员
     * @return array{total:int,used:int,left:int,unlimited:bool}
     */
    protected function callQuotaState($userId, $isMember)
    {
        $normalQuota = max(0, (int)$this->cfg('call.normalDailyQuota', 5));
        $vipQuota = max(0, (int)$this->cfg('call.vipDailyQuota', 30));
        $total = $isMember ? $vipQuota : $normalQuota;
        $unlimited = ($total === 0);

        $used = 0;
        if ($userId > 0) {
            $today = date('Y-m-d');
            $used = (int)Db::name('fc_call_log')
                ->where('user_id', $userId)
                ->where('call_date', $today)
                ->count();
        }

        return [
            'total'     => $total,
            'used'      => $used,
            'left'      => $unlimited ? 999 : max(0, $total - $used),
            'unlimited' => $unlimited,
        ];
    }

    /**
     * M2 获取商家名下的信息列表（支持分页）
     * GET /api/v1/merchant/:id/posts
     *
     * @return void
     */
    public function posts()
    {
        $id = (int)$this->routeId();
        if ($id <= 0) {
            $id = (int)$this->input('id', 0) ?: (int)$this->input('userId', 0);
        }
        if ($id <= 0) {
            $this->fail('缺少商家参数', 400);
        }

        $userId = $id;
        $m = Db::name('fc_merchant')->where('id', $id)->find();
        if ($m) {
            $userId = (int)$m['user_id'];
        }

        list($page, $size) = $this->pager(10, 30);
        $res = $this->fetchMerchantPosts($userId, $page, $size);
        $this->ok($res);
    }

    /**
     * 查询指定商家的发帖列表统一组装
     *
     * @param int $userId 发布者用户ID
     * @param int $page 页码
     * @param int $size 每页数量
     * @return array
     */
    protected function fetchMerchantPosts($userId, $page, $size)
    {
        $q = Db::name('fc_post')
            ->where('user_id', $userId)
            ->where('status', 1)
            ->where('audit_status', 1)
            ->whereNull('deletetime');

        $total = (int)$q->count();
        $rows = Db::name('fc_post')
            ->where('user_id', $userId)
            ->where('status', 1)
            ->where('audit_status', 1)
            ->whereNull('deletetime')
            ->order('is_top desc, id desc')
            ->page($page, $size)
            ->select();

        $list = [];
        foreach ($rows as $r) {
            $catName = '';
            if (!empty($r['category_id'])) {
                $cat = Db::name('fc_category')->where('id', $r['category_id'])->value('name');
                $catName = $cat ? (string)$cat : '';
            }
            $subCatId = isset($r['sub_category_id']) ? (int)$r['sub_category_id'] : 0;
            $subCatName = '';
            if ($subCatId > 0) {
                $subCat = Db::name('fc_category')->where('id', $subCatId)->value('name');
                $subCatName = $subCat ? (string)$subCat : '';
            }

            $cover = (string)$r['cover'];
            $mediaArr = $this->jsonArr($r['media']);
            if ($cover === '' && !empty($mediaArr)) {
                $cover = $mediaArr[0];
            }

            $tags = [];
            if (!empty($r['tags'])) {
                foreach (explode(',', (string)$r['tags']) as $t) {
                    $t = trim($t);
                    if ($t !== '') {
                        $tags[] = $t;
                    }
                }
            }

            $list[] = [
                'id'              => (int)$r['id'],
                'title'           => (string)$r['title'],
                'content'         => (string)$r['content'],
                'price'           => (float)$r['price'],
                'priceUnit'       => (string)$r['price_unit'],
                'cover'           => $cover,
                'media'           => $mediaArr,
                'province'        => isset($r['province']) ? (string)$r['province'] : '',
                'city'            => isset($r['city']) ? (string)$r['city'] : '',
                'area'            => (string)$r['area'],
                'address'         => (string)$r['address'],
                'plantArea'       => isset($r['plant_area']) ? (string)$r['plant_area'] : '',
                'harvestTime'     => isset($r['harvest_time']) ? (string)$r['harvest_time'] : '',
                'outputRange'     => isset($r['output_range']) ? (string)$r['output_range'] : '',
                'categoryId'      => (int)$r['category_id'],
                'categoryName'    => $catName,
                'subCategoryId'   => $subCatId,
                'subCategoryName' => $subCatName,
                'isTop'           => (int)$r['is_top'] === 1,
                'views'           => (int)$r['views'],
                'commentCount'    => (int)$r['comment_count'],
                'createdAt'       => $this->iso($r['createtime']),
                'tags'            => $tags,
            ];
        }

        return [
            'list'    => $list,
            'total'   => $total,
            'page'    => $page,
            'size'    => $size,
            'hasMore' => ($page * $size) < $total,
        ];
    }

    /**
     * 计算两点大地距离（单位 km，保留 1 位小数）
     *
     * @param float $lat1 纬度1
     * @param float $lng1 经度1
     * @param float $lat2 纬度2
     * @param float $lng2 经度2
     * @return float
     */
    protected function calcDistance($lat1, $lng1, $lat2, $lng2)
    {
        $earthRadius = 6378.137;
        $radLat1 = deg2rad($lat1);
        $radLat2 = deg2rad($lat2);
        $a = $radLat1 - $radLat2;
        $b = deg2rad($lng1) - deg2rad($lng2);
        $s = 2 * asin(sqrt(pow(sin($a / 2), 2) + cos($radLat1) * cos($radLat2) * pow(sin($b / 2), 2)));
        $s = $s * $earthRadius;
        return round($s, 1);
    }
}