<?php

namespace App\Module\Game\Services;

use App\Module\Fund\Logic\User as FundLogic;
use App\Module\Fund\Enums\LOG_TYPE as FUND_LOG_TYPE;
use App\Module\Game\Enums\CONSUME_TYPE;
use App\Module\Game\Enums\REWARD_SOURCE_TYPE;
use App\Module\Game\Logics\ConsumeProcessors\CurrencyConsume;
use App\Module\Game\Logics\ConsumeProcessors\FundConfigConsume;
use App\Module\Game\Logics\ConsumeProcessors\FundConfigsConsume;
use App\Module\Game\Logics\ConsumeProcessors\ItemConsume;
use App\Module\Game\Logics\ConsumeProcessors\ProcessorDispatcher;
use App\Module\Game\Models\GameConsumeGroup;
use App\Module\Game\Models\GameConsumeItem;
use App\Module\Game\Dtos\ConsumeGroupDto;
use App\Module\GameItems\Services\ItemService;
use Illuminate\Support\Facades\Log;
use UCore\Dto\Res;

/**
 * 消耗服务类
 *
 * 提供消耗组相关的服务，包括检查用户是否满足消耗条件、执行消耗等功能
 */
class ConsumeService
{
    /**
     * 获取消耗组信息
     *
     * @param int|string $consumeGroupCode 消耗组ID或编码
     * @param bool $withItems 是否包含消耗项
     * @return ConsumeGroupDto|null 消耗组DTO，不存在时返回null
     */
    public static function getConsumeGroup($consumeGroupCode, bool $withItems = true): ?ConsumeGroupDto
    {
        try {
            // 获取消耗组
            $consumeGroup = is_numeric($consumeGroupCode)
                ? GameConsumeGroup::with($withItems ? ['consumeItems'] : [])->find($consumeGroupCode)
                : GameConsumeGroup::with($withItems ? ['consumeItems'] : [])->where('code', $consumeGroupCode)->first();

            if (!$consumeGroup) {
                return null;
            }

            return ConsumeGroupDto::fromModel($consumeGroup, $withItems);
        } catch (\Exception $e) {
            Log::error('获取消耗组失败', [
                'consume_group_code' => $consumeGroupCode,
                'error' => $e->getMessage()
            ]);

            return null;
        }
    }

    /**
     * 获取消耗组并转换为Protobuf Deduct对象
     *
     * @param int|string $consumeGroupCode 消耗组ID或编码
     * @return \Uraus\Kku\Common\Deduct|null Protobuf Deduct对象，不存在时返回null
     */
    public static function getConsumeGroupAsDeduct($consumeGroupCode): ?\Uraus\Kku\Common\Deduct
    {
        $consumeGroupDto = self::getConsumeGroup($consumeGroupCode, true);

        if (!$consumeGroupDto) {
            return null;
        }

        return ProtobufConverter::convertConsumeGroupToDeduct($consumeGroupDto);
    }

    /**
     * 检查用户是否满足消耗组的条件
     *
     * @param int $userId 用户ID
     * @param string|int $consumeGroupCode 消耗组编码或ID
     * @param float $multiplier 倍数，用于验证几倍消耗，默认为1
     * @return array 检查结果，包含success字段表示是否满足条件，message字段表示错误信息
     */
    public static function checkConsume(int $userId, $consumeGroupCode, float $multiplier = 1.0): Res
    {
        try {
            // 获取消耗组
            /**
             * @var GameConsumeGroup $consumeGroup
             */
            $consumeGroup = is_numeric($consumeGroupCode)
                ? GameConsumeGroup::find($consumeGroupCode)
                : GameConsumeGroup::where('code', $consumeGroupCode)->first();

            if (!$consumeGroup) {
                return Res::error("消耗组不存在: {$consumeGroupCode}");
            }

            // 获取消耗组中的所有消耗项
            $consumeItems = $consumeGroup->consumeItems;

            if ($consumeItems->isEmpty()) {
                return Res::success();
            }

            // 检查每个消耗项
            foreach ($consumeItems as $item) {
                $checkResult = self::checkConsumeItem($userId, $item, $multiplier);

                if (!$checkResult['success']) {
                    return Res::error($checkResult['message'], $checkResult);
                }
            }

            // 所有条件都满足，返回成功; 返回消耗组信息
            return Res::success('',
                                ConsumeGroupService::consumeItems2Array($consumeItems)
            );
        } catch (\Exception $e) {
            Log::error('检查消耗条件失败', [
                'user_id'       => $userId,
                'consume_group' => $consumeGroupCode,
                'error'         => $e->getMessage()
            ]);

            return Res::error('检查消耗条件时发生错误: ' . $e->getMessage());

        }
    }

    /**
     * 执行消耗
     *
     * @param int $userId 用户ID
     * @param string|int $consumeGroupCode 消耗组编码或ID
     * @param string $source 消耗来源
     * @param int $sourceId 消耗来源ID
     * @param bool $check 是否先检查消耗条件
     * @param float $multiplier 倍数，用于执行几倍消耗，默认为1
     * @return Res 执行结果
     */
    public static function executeConsume(int $userId, $consumeGroupCode, REWARD_SOURCE_TYPE $source, int $sourceId = 0, $check = true, float $multiplier = 1.0): Res
    {
        if ($check) {
            // 先检查是否满足消耗条件（使用相同的倍数）
            $checkResult = self::checkConsume($userId, $consumeGroupCode, $multiplier);
            if (!$checkResult->success) {
                return $checkResult;
            }
        }

        try {
            // 获取消耗组
            /**
             * @var GameConsumeGroup $consumeGroup
             */
            $consumeGroup = is_numeric($consumeGroupCode)
                ? GameConsumeGroup::find($consumeGroupCode)
                : GameConsumeGroup::where('code', $consumeGroupCode)->first();

            if (!$consumeGroup) {
                return Res::error("消耗组不存在: {$consumeGroupCode}");
            }

            // 获取消耗组中的所有消耗项
            $consumeItems = $consumeGroup->consumeItems;

            if ($consumeItems->isEmpty()) {
                return Res::success('消耗组为空，无需执行消耗', [
                    'consume_group' => [
                        'id'   => $consumeGroup->id,
                        'code' => $consumeGroup->code,
                        'name' => $consumeGroup->name
                    ],
                    'list' => []
                ]);
            }

            // 验证事务是否已开启（由调用者负责事务管理）
            \UCore\Db\Helper::check_tr();

            // 执行每个消耗项
            foreach ($consumeItems as $item) {
                $consumeResult = ProcessorDispatcher::process($userId, $item, $source->valueString(), $sourceId, $multiplier);

                if (!$consumeResult['success']) {
                    return Res::error($consumeResult['message'], $consumeResult);
                }
            }

            return Res::success('消耗执行成功', [
                'consume_group' => [
                    'id'   => $consumeGroup->id,
                    'code' => $consumeGroup->code,
                    'name' => $consumeGroup->name
                ],
                'list'          => ConsumeGroupService::consumeItems2Array($consumeItems)
            ]);
        } catch (\Exception $e) {
            Log::error('执行消耗失败', [
                'user_id'       => $userId,
                'consume_group' => $consumeGroupCode,
                'source'        => $source,
                'source_id'     => $sourceId,
                'error'         => $e->getMessage()
            ]);

            return Res::error('执行消耗时发生错误: ' . $e->getMessage());
        }
    }

    /**
     * 检查单个消耗项
     *
     * @param int $userId 用户ID
     * @param GameConsumeItem $consumeItem 消耗项
     * @param float $multiplier 倍数，用于验证几倍消耗，默认为1
     * @return array 检查结果
     */
    protected static function checkConsumeItem(int $userId, GameConsumeItem $consumeItem, float $multiplier = 1.0): array
    {
        switch ($consumeItem->consume_type) {
            case CONSUME_TYPE::ITEM->value:
                $result = ItemConsume::checkItemConsume($userId,$consumeItem,$multiplier);

                // 将 Res 对象转换为数组格式
                return [
                    'success'  => $result->success,
                    'message'  => $result->message,
                    'item_id'  => $result->data['item_id'] ?? null,
                    'required' => $result->data['required'] ?? null,
                    'actual'   => $result->data['actual'] ?? null
                ];

            case CONSUME_TYPE::FUND_CONFIG->value:
                $result = FundConfigConsume::checkFundConfigConsume($userId,$consumeItem,$multiplier);

                // 将 Res 对象转换为数组格式
                return [
                    'success'        => $result->success,
                    'message'        => $result->message,
                    'fund_config_id' => $result->data['fund_config_id'] ?? null,
                    'required'       => $result->data['required'] ?? null,
                    'actual'         => $result->data['actual'] ?? null
                ];

            case CONSUME_TYPE::CURRENCY->value:
                return  CurrencyConsume::checkCurrencyConsume($userId,$consumeItem,$multiplier);


            case CONSUME_TYPE::FUND_CONFIGS->value:
                $result =  FundConfigsConsume::checkFundConfigsConsume($userId,$consumeItem,$multiplier);

                // 将 Res 对象转换为数组格式
                return [
                    'success'         => $result->success,
                    'message'         => $result->message,
                    'fund_config_ids' => $result->data['fund_config_ids'] ?? null,
                    'required'        => $result->data['required'] ?? null,
                    'actual'          => $result->data['actual'] ?? null
                ];

            default:
                return [
                    'success' => false,
                    'message' => "不支持的消耗类型: {$consumeItem->consume_type}"
                ];
        }
    }


}