<?php

namespace App\Module\Task\Repositorys;

use App\Module\Task\Models\Task;
use Dcat\Admin\Repositories\EloquentRepository;

/**
 * 任务数据仓库类
 *
 * 提供任务数据的访问和操作功能。
 * 该类是任务模块与后台管理系统的桥梁，用于处理任务数据的CRUD操作。
 */
class TaskRepository extends EloquentRepository
{
    /**
     * 关联的Eloquent模型类
     *
     * @var string
     */
    protected $eloquentClass = Task::class;
    
    /**
     * 复制任务
     * 
     * @param int $id 任务ID
     * @return Task 复制后的新任务
     */
    public function duplicate(int $id): Task
    {
        $task = $this->eloquentClass::findOrFail($id);
        $newTask = $task->replicate();
        $newTask->name = $task->name . ' (复制)';
        $newTask->save();
        
        // 复制任务奖励
        foreach ($task->rewards as $reward) {
            $newReward = $reward->replicate();
            $newReward->task_id = $newTask->id;
            $newReward->save();
        }
        
        // 复制任务消耗
        foreach ($task->costs as $cost) {
            $newCost = $cost->replicate();
            $newCost->task_id = $newTask->id;
            $newCost->save();
        }
        
        // 复制任务达成条件
        foreach ($task->achievementConditions as $condition) {
            $newCondition = $condition->replicate();
            $newCondition->task_id = $newTask->id;
            $newCondition->save();
        }
        
        return $newTask;
    }
    
    /**
     * 获取可用任务列表
     * 
     * @param int $userId 用户ID
     * @param string|null $type 任务类型
     * @param int $userLevel 用户等级
     * @return array 可用任务列表
     */
    public function getAvailableTasks(int $userId, ?string $type = null, int $userLevel = 0): array
    {
        $query = $this->eloquentClass::query()
            ->where('is_active', true)
            ->where('level_required', '<=', $userLevel)
            ->where(function ($query) {
                $query->whereNull('start_time')
                    ->orWhere('start_time', '<=', now());
            })
            ->where(function ($query) {
                $query->whereNull('end_time')
                    ->orWhere('end_time', '>=', now());
            });
            
        if ($type) {
            $query->where('type', $type);
        }
        
        return $query->get()->toArray();
    }
}