<?php

namespace App\Services\Coach;

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

class ProjectService
{
    /**
     * 获取所有可以开通的项目列表
     *
     * @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');

                // 检查技师状态
                abort_if($user->coach->state !== TechnicianStatus::ACTIVE->value,
                    422, '技师状态异常，无法开通项目');

                // 创建技师项目关联
                $coachProject = $user->coach->projects()->create([
                    'project_id' => $data['project_id'],
                    'state' => ProjectStatus::OPEN->value,
                    'discount_amount' => 0.00,
                    'service_gender' => 0,
                    'service_distance' => 0,
                    'traffic_fee_type' => 2,
                    'traffic_fee' => 0,
                    'created_at' => now(),
                    'updated_at' => now(),
                ]);

                // 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;
            }
        });
    }

    /**
     * 设置项目
     *
     * @param  int  $userId  技师用户ID
     * @param  array  $data  项目设置数据
     * @return array
     *
     * @throws \Exception
     */
    public function setProject(int $userId, array $data)
    {
        return DB::transaction(function () use ($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');

                // 检查项目是否存在
                $coachProject = $user->coach->projects()
                    ->where('project_id', $data['project_id'])
                    ->first();
                abort_if(! $coachProject, 404, '未开通该项目');

                // TODO：取值范围待定（从配置表中获取）

                // 验证服务距离的合理范围
                if (isset($data['service_distance']) && $data['service_distance'] > 0) {
                    abort_if($data['service_distance'] > 50, 422, '服务距离不能超过50公里');
                }

                // 更新项目设置
                $coachProject->update([
                    'discount_amount' => $data['discount_amount'] ?? $coachProject->discount_amount,
                    'service_gender' => $data['service_gender'] ?? $coachProject->service_gender,
                    'service_distance' => $data['service_distance'] ?? $coachProject->service_distance,
                    'traffic_fee_type' => $data['traffic_fee_type'] ?? $coachProject->traffic_fee_type,
                    'traffic_fee' => $data['traffic_fee'] ?? $coachProject->traffic_fee,
                ]);

                // 记录日志
                Log::info('技师项目设置更新成功', [
                    'user_id' => $userId,
                    'coach_id' => $user->coach->id,
                    'project_id' => $data['project_id'],
                    'settings' => $data,
                ]);

                return [
                    'message' => '项目设置更新成功',
                    'project_id' => $coachProject->project_id,
                    'settings' => [
                        'discount_amount' => $coachProject->discount_amount,
                        'service_gender' => $coachProject->service_gender,
                        'service_distance' => $coachProject->service_distance,
                        'traffic_fee_type' => $coachProject->traffic_fee_type,
                        'traffic_fee' => $coachProject->traffic_fee,
                    ],
                ];

            } catch (\Exception $e) {
                Log::error('技师项目设置更新失败', [
                    'user_id' => $userId,
                    'data' => $data,
                    'error' => $e->getMessage(),
                    'file' => $e->getFile(),
                    'line' => $e->getLine(),
                ]);
                throw $e;
            }
        });
    }
}