<?php

namespace App\Services\Coach;

use App\Enums\ProjectStatus;
use App\Models\MemberUser;
use App\Models\Project;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class ProjectService
{
    /**
     * 获取可开通的项目列表
     *
     * @param  int  $userId  技师用户ID
     */
    public function getAvailableProjects(int $userId): array
    {
        try {
            // 加载用户和技师信息
            $user = MemberUser::with(['coach', 'coach.projects'])->findOrFail($userId);
            abort_if(! $user->coach, 404, '技师信息不存在');

            // 获取所有可开通的项目
            $projects = Project::where('state', ProjectStatus::OPEN->value)
                ->select([
                    'id',
                    'title',
                    'subtitle',
                    'cover',
                    'price',
                    'original_price',
                    'sales',
                    'duration',
                    'project_desc',
                    'service_desc',
                    'type',
                ])
                ->get();

            // 记录日志
            Log::info('获取可开通项目列表成功', [
                'user_id' => $userId,
                'coach_id' => $user->coach->id,
                'project_count' => $projects->count(),
            ]);

            return [
                'items' => $projects,
                'total' => $projects->count(),
            ];

        } catch (\Exception $e) {
            Log::error('获取可开通项目列表失败', [
                'user_id' => $userId,
                'error' => $e->getMessage(),
                'file' => $e->getFile(),
                'line' => $e->getLine(),
            ]);
            throw $e;
        }
    }

    /**
     * 技师开通项目
     *
     * @param  int  $userId  技师用户ID
     * @param  array  $data  开通项目数据
     */
    public function openProject(int $userId, array $data): array
    {
        return DB::transaction(function () use ($userId, $data) {
            try {
                // 加载用户和技师信息
                $user = MemberUser::with(['coach', 'coach.projects'])->findOrFail($userId);
                abort_if(! $user->coach, 404, '技师信息不存在');

                // 验证项目是否存在且状态正常
                $project = Project::where('id', $data['project_id'])
                    ->where('state', ProjectStatus::OPEN->value)
                    ->first();
                abort_if(! $project, 404, '项目不存在或已下架');

                // 检查是否已开通该项目
                $existingProject = $user->coach->projects()
                    ->where('project_id', $data['project_id'])
                    ->first();
                abort_if($existingProject, 422, '已开通该项目');

                // 创建技师项目关联
                $coachProject = $user->coach->projects()->create([
                    // 项目ID
                    'project_id' => $data['project_id'],
                    // 项目状态
                    'state' => ProjectStatus::OPEN->value,
                    // 优惠金额
                    'discount_amount' => 0.00,
                    // 服务性别(0:不限 1:男 2:女)
                    'service_gender' => 0,
                    // 服务距离(公里 0:不限)
                    'service_distance' => 0,
                    // 收取路费(0:免费 1:单程 2:双程)
                    'traffic_fee_type' => 2,
                    // 路费金额
                    'traffic_fee' => 0,
                ]);

                // 记录日志
                Log::info('技师开通项目成功', [
                    'user_id' => $userId,
                    'coach_id' => $user->coach->id,
                    'project_id' => $data['project_id'],
                    'project_name' => $project->name,
                ]);

                return [
                    'message' => '项目开通成功',
                    'project_id' => $project->id,
                    'project_name' => $project->name,
                ];

            } catch (\Exception $e) {
                Log::error('技师开通项目失败', [
                    'user_id' => $userId,
                    'data' => $data,
                    'error' => $e->getMessage(),
                    'file' => $e->getFile(),
                    'line' => $e->getLine(),
                ]);
                throw $e;
            }
        });
    }

    /**
     * 获取技师已开通的项目列表
     *
     * @param  int  $userId  技师用户ID
     */
    public function getOpenedProjects(int $userId): array
    {
        try {
            // 加载用户和技师信息
            $user = MemberUser::with(['coach'])->findOrFail($userId);
            abort_if(! $user->coach, 404, '技师信息不存在');

            // 获取已开通的项目
            $projects = $user->coach->projects()
                ->with('project')
                ->where('state', ProjectStatus::ACTIVE->value)
                ->get()
                ->map(function ($coachProject) {
                    return [
                        'id' => $coachProject->project->id,
                        'name' => $coachProject->project->name,
                        'cover' => $coachProject->project->cover,
                        'price' => $coachProject->project->price,
                        'duration' => $coachProject->project->duration,
                        'discount_amount' => $coachProject->discount_amount,
                        'traffic_fee' => $coachProject->traffic_fee,
                        'is_round_trip' => $coachProject->is_round_trip,
                        'opened_at' => $coachProject->created_at,
                    ];
                });

            // 记录日志
            Log::info('获取已开通项目列表成功', [
                'user_id' => $userId,
                'coach_id' => $user->coach->id,
                'project_count' => $projects->count(),
            ]);

            return [
                'items' => $projects,
                'total' => $projects->count(),
            ];

        } catch (\Exception $e) {
            Log::error('获取已开通项目列表失败', [
                'user_id' => $userId,
                'error' => $e->getMessage(),
                'file' => $e->getFile(),
                'line' => $e->getLine(),
            ]);
            throw $e;
        }
    }
}