<?php

namespace App\Module\Team\Services;

use App\Module\Team\Logics\ReferralCodeLogic;
use App\Module\Team\Logics\ReferralLogic;
use App\Module\Team\Models\TeamReferralCode;
use App\Module\Team\Models\TeamReferralCodeUsage;
use Illuminate\Support\Facades\Log;

/**
 * 推荐码服务类
 *
 * 对外提供推荐码相关的服务，包括生成推荐码、验证推荐码、
 * 使用推荐码等功能。该类对外提供服务，内部调用逻辑层实现。
 */
class ReferralCodeService
{

    /**
     * 获取或生成用户的推荐码
     *
     * @param int $userId 用户ID
     * @param \DateTime|null $expireTime 过期时间
     * @return array|null
     */
    public static function getUserReferralCode(int $userId, ?\DateTime $expireTime = null): ?array
    {
        try {
            $referralLogic = new ReferralLogic();
            $referralCodeLogic = new ReferralCodeLogic($referralLogic);

            // 先尝试获取现有的推荐码
            $code = $referralCodeLogic->getUserActiveCode($userId);

            // 如果没有有效的推荐码，则生成一个新的
            if (!$code) {
                $codeStr = $referralCodeLogic->generateReferralCode($userId, $expireTime);

                if (!$codeStr) {
                    return null;
                }

                $code = $referralCodeLogic->getUserActiveCode($userId);
            }

            if (!$code) {
                return null;
            }

            return [
                'code' => $code->code,
                'usage_count' => $code->usage_count,
                'status' => $code->status,
                'expire_time' => $code->expire_time,
                'created_at' => $code->created_at,
                'is_valid' => $code->isValid()
            ];
        } catch (\Exception $e) {
            Log::error("获取或生成用户推荐码失败: " . $e->getMessage());
            return null;
        }
    }

    /**
     * 验证推荐码
     *
     * @param string $code 推荐码
     * @return array
     */
    public static function validateReferralCode(string $code): array
    {
        try {
            $referralLogic = new ReferralLogic();
            $referralCodeLogic = new ReferralCodeLogic($referralLogic);

            return $referralCodeLogic->validateReferralCode($code);
        } catch (\Exception $e) {
            Log::error("验证推荐码失败: " . $e->getMessage());
            return [
                'valid' => false,
                'message' => '验证推荐码时发生错误',
                'code' => null
            ];
        }
    }

    /**
     * 使用推荐码
     *
     * @param string $code 推荐码
     * @param int $userId 使用者ID
     * @param string $ipAddress IP地址
     * @param string $userAgent 用户代理
     * @return array
     */
    public static function useReferralCode(string $code, int $userId, string $ipAddress, string $userAgent): array
    {
        try {
            $referralLogic = new ReferralLogic();
            $referralCodeLogic = new ReferralCodeLogic($referralLogic);

            return $referralCodeLogic->useReferralCode($code, $userId, $ipAddress, $userAgent);
        } catch (\Exception $e) {
            Log::error("使用推荐码失败: " . $e->getMessage());
            return [
                'success' => false,
                'message' => '使用推荐码时发生错误'
            ];
        }
    }

    /**
     * 禁用推荐码
     *
     * @param string $code 推荐码
     * @return bool
     */
    public static function disableReferralCode(string $code): bool
    {
        try {
            $referralLogic = new ReferralLogic();
            $referralCodeLogic = new ReferralCodeLogic($referralLogic);

            return $referralCodeLogic->disableReferralCode($code);
        } catch (\Exception $e) {
            Log::error("禁用推荐码失败: " . $e->getMessage());
            return false;
        }
    }

    /**
     * 获取推荐码使用记录
     *
     * @param string $code 推荐码
     * @param int $page 页码
     * @param int $pageSize 每页数量
     * @return array
     */
    public static function getReferralCodeUsages(string $code, int $page = 1, int $pageSize = 20): array
    {
        try {
            $query = TeamReferralCodeUsage::where('code', $code);

            $total = $query->count();

            $usages = $query->orderBy('created_at', 'desc')
                ->offset(($page - 1) * $pageSize)
                ->limit($pageSize)
                ->with(['user', 'codeOwner'])
                ->get();

            $result = [];
            foreach ($usages as $usage) {
                $result[] = [
                    'id' => $usage->id,
                    'code' => $usage->code,
                    'code_owner_id' => $usage->code_owner_id,
                    'code_owner_name' => $usage->codeOwner ? ($usage->codeOwner->username ?? '') : '',
                    'user_id' => $usage->user_id,
                    'user_name' => $usage->user ? ($usage->user->username ?? '') : '',
                    'ip_address' => $usage->ip_address,
                    'user_agent' => $usage->user_agent,
                    'status' => $usage->status,
                    'result' => $usage->result,
                    'remark' => $usage->remark,
                    'created_at' => $usage->created_at
                ];
            }

            return [
                'total' => $total,
                'page' => $page,
                'page_size' => $pageSize,
                'total_pages' => ceil($total / $pageSize),
                'usages' => $result
            ];
        } catch (\Exception $e) {
            Log::error("获取推荐码使用记录失败: " . $e->getMessage());
            return [
                'total' => 0,
                'page' => $page,
                'page_size' => $pageSize,
                'total_pages' => 0,
                'usages' => []
            ];
        }
    }

    /**
     * 获取用户的所有推荐码
     *
     * @param int $userId 用户ID
     * @param int $page 页码
     * @param int $pageSize 每页数量
     * @return array
     */
    public static function getUserAllReferralCodes(int $userId, int $page = 1, int $pageSize = 20): array
    {
        try {
            $query = TeamReferralCode::where('user_id', $userId);

            $total = $query->count();

            $codes = $query->orderBy('created_at', 'desc')
                ->offset(($page - 1) * $pageSize)
                ->limit($pageSize)
                ->get();

            $result = [];
            foreach ($codes as $code) {
                $result[] = [
                    'code' => $code->code,
                    'usage_count' => $code->usage_count,
                    'status' => $code->status,
                    'expire_time' => $code->expire_time,
                    'created_at' => $code->created_at,
                    'is_valid' => $code->isValid()
                ];
            }

            return [
                'total' => $total,
                'page' => $page,
                'page_size' => $pageSize,
                'total_pages' => ceil($total / $pageSize),
                'codes' => $result
            ];
        } catch (\Exception $e) {
            Log::error("获取用户所有推荐码失败: " . $e->getMessage());
            return [
                'total' => 0,
                'page' => $page,
                'page_size' => $pageSize,
                'total_pages' => 0,
                'codes' => []
            ];
        }
    }

    /**
     * 清理过期的推荐码
     *
     * @return int 清理的数量
     */
    public static function cleanExpiredReferralCodes(): int
    {
        try {
            $referralLogic = new ReferralLogic();
            $referralCodeLogic = new ReferralCodeLogic($referralLogic);

            return $referralCodeLogic->cleanExpiredReferralCodes();
        } catch (\Exception $e) {
            Log::error("清理过期推荐码失败: " . $e->getMessage());
            return 0;
        }
    }
}