<?php

namespace App\Module\Game\Logics\RewardProcessors;

use App\Module\Game\Dtos\RewardItemDto;
use Exception;
use Illuminate\Support\Facades\Log;

/**
 * 宠物奖励处理器
 * 
 * 处理宠物(PET)类型的奖励发放
 */
class PetRewardProcessor
{
    /**
     * 处理宠物奖励
     *
     * @param int $userId 用户ID
     * @param RewardItemDto $item 奖励项
     * @param string $sourceType 来源类型
     * @param int $sourceId 来源ID
     * @return void
     * @throws Exception
     */
    public static function process(int $userId, RewardItemDto $item, string $sourceType, int $sourceId): void
    {
        try {
            // 获取宠物配置参数
            $petConfigId = $item->targetId; // 宠物配置ID或宠物类型
            $petCount = $item->quantity > 0 ? $item->quantity : 1; // 宠物数量，默认1只
            $petGrade = $item->param1 > 0 ? $item->param1 : null; // 宠物品阶，为null时随机生成

            // 验证宠物配置是否存在
            $petConfig = \App\Module\Pet\Models\PetConfig::find($petConfigId);
            if (!$petConfig) {
                throw new Exception("宠物配置不存在，配置ID: {$petConfigId}");
            }

            // 循环创建宠物（支持一次奖励多只宠物）
            $createdPets = [];
            for ($i = 0; $i < $petCount; $i++) {
                // 生成宠物名称
                $petName = self::generatePetName($petConfig->name, $i + 1, $petCount);

                // 创建宠物
                $result = \App\Module\Pet\Services\PetService::createPet($userId, $petName, $petGrade, [
                    'pet_type' => $petConfig->pet_type,
                    'source' => 'reward',
                    'source_type' => $sourceType,
                    'source_id' => $sourceId
                ]);

                if (!$result['success']) {
                    throw new Exception("宠物创建失败: " . ($result['message'] ?? '未知错误'));
                }

                $createdPets[] = [
                    'pet_id' => $result['pet_id'],
                    'name' => $petName,
                    'grade' => $result['grade']
                ];

                Log::info("宠物奖励创建成功", [
                    'userId' => $userId,
                    'petId' => $result['pet_id'],
                    'petName' => $petName,
                    'petGrade' => $result['grade'],
                    'petConfigId' => $petConfigId,
                    'petType' => $petConfig->pet_type,
                    'index' => $i + 1,
                    'totalCount' => $petCount,
                    'sourceType' => $sourceType,
                    'sourceId' => $sourceId
                ]);
            }

            Log::info("宠物奖励发放完成", [
                'userId' => $userId,
                'petConfigId' => $petConfigId,
                'petType' => $petConfig->pet_type,
                'petCount' => $petCount,
                'petGrade' => $petGrade,
                'createdPets' => $createdPets,
                'sourceType' => $sourceType,
                'sourceId' => $sourceId
            ]);
        } catch (Exception $e) {
            Log::error("宠物奖励发放失败", [
                'userId' => $userId,
                'petConfigId' => $item->targetId,
                'petCount' => $item->quantity,
                'petGrade' => $item->param1,
                'sourceType' => $sourceType,
                'sourceId' => $sourceId,
                'error' => $e->getMessage()
            ]);
            throw new Exception("宠物奖励发放失败: " . $e->getMessage());
        }
    }

    /**
     * 生成宠物名称
     *
     * @param string $baseName 基础名称
     * @param int $index 索引
     * @param int $total 总数
     * @return string 生成的宠物名称
     */
    private static function generatePetName(string $baseName, int $index, int $total): string
    {
        if ($total == 1) {
            return $baseName;
        }

        return $baseName . $index;
    }
}