kknongchang_2506/app/Module/GameItems/Logics/Item.php

<?php

namespace App\Module\GameItems\Logics;

use App\Module\GameItems\Enums\ITEM_TYPE;
use App\Module\GameItems\Enums\TRANSACTION_TYPE;
use App\Module\GameItems\Events\ItemAcquired;
use App\Module\GameItems\Events\ItemConsumed;
use App\Module\GameItems\Events\ItemQuantityChanged;
use App\Module\GameItems\Models\Item as ItemModel;
use App\Module\GameItems\Models\ItemInstance;
use App\Module\GameItems\Models\ItemTransactionLog;
use App\Module\GameItems\Models\ItemUser;
use Exception;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Event;

/**
 * 物品逻辑类
 */
class Item
{
    /**
     * 判断物品是否为宝箱
     *
     * @param ItemModel $item 物品模型
     * @return bool
     */
    public static function isChest(ItemModel $item): bool
    {
        return $item->type == ITEM_TYPE::CHEST; // 使用枚举代替魔法数字
    }

    /**
     * 检查物品是否已过期（全局过期）
     *
     * @param ItemModel $item 物品模型
     * @return bool
     */
    public static function isExpired(ItemModel $item): bool
    {
        if (empty($item->global_expire_at)) {
            return false;
        }

        return $item->global_expire_at->isPast();
    }

    /**
     * 添加统一属性物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $quantity 数量
     * @param array $options 选项
     * @return array 添加结果
     * @throws Exception
     */
    public static function addNormalItem(int $userId, int $itemId, int $quantity, array $options = []): array
    {
        // 获取物品信息
        $item = ItemModel::findOrFail($itemId);

        // 计算过期时间
        $expireAt = null;
        if (!empty($options['expire_at'])) {
            $expireAt = $options['expire_at'];
        } elseif ($item->default_expire_seconds > 0) {
            $expireAt = now()->addSeconds($item->default_expire_seconds);
        }

        // 获取来源信息
        $sourceType = $options['source_type'] ?? null;
        $sourceId = $options['source_id'] ?? null;

        // 开始事务
        DB::beginTransaction();
        try {
            // 检查用户是否已有该物品且过期时间相同
            $userItem = ItemUser::where('user_id', $userId)
                ->where('item_id', $itemId)
                ->where(function ($query) use ($expireAt) {
                    if ($expireAt === null) {
                        $query->whereNull('expire_at');
                    } else {
                        $query->where('expire_at', $expireAt);
                    }
                })
                ->whereNull('instance_id')
                ->first();

            $addedQuantity = $quantity;
            $currentQuantity = 0;

            if ($userItem) {
                // 已有物品，增加数量
                $currentQuantity = $userItem->quantity;
                $newQuantity = $currentQuantity + $quantity;

                // 检查最大堆叠限制
                if ($item->max_stack > 0 && $newQuantity > $item->max_stack) {
                    // 超过最大堆叠，创建新堆叠
                    $userItem->quantity = $item->max_stack;
                    $userItem->save();

                    // 剩余数量
                    $remainingQuantity = $newQuantity - $item->max_stack;

                    // 递归添加剩余数量
                    self::addNormalItem($userId, $itemId, $remainingQuantity, $options);

                    $addedQuantity = $quantity - $remainingQuantity;
                    $currentQuantity = $item->max_stack;
                } else {
                    // 未超过最大堆叠，直接更新数量
                    $oldQuantity = $userItem->quantity;
                    $userItem->quantity = $newQuantity;
                    $userItem->save();
                    $currentQuantity = $newQuantity;

                    // 触发物品数量变更事件
                    Event::dispatch(new ItemQuantityChanged(
                        $userId,
                        $itemId,
                        null,
                        $oldQuantity,
                        $newQuantity,
                        $userItem->id,
                        $options
                    ));
                }
            } else {
                // 没有该物品，创建新记录
                $userItem = new ItemUser([
                    'user_id' => $userId,
                    'item_id' => $itemId,
                    'quantity' => min($quantity, $item->max_stack > 0 ? $item->max_stack : $quantity),
                    'expire_at' => $expireAt,
                ]);
                $userItem->save();

                // 如果数量超过最大堆叠，递归添加剩余数量
                if ($item->max_stack > 0 && $quantity > $item->max_stack) {
                    $remainingQuantity = $quantity - $item->max_stack;
                    self::addNormalItem($userId, $itemId, $remainingQuantity, $options);
                    $addedQuantity = $item->max_stack;
                }

                $currentQuantity = $userItem->quantity;
            }

            // 记录交易日志
            self::logTransaction(
                $userId,
                $itemId,
                null,
                $addedQuantity,
                TRANSACTION_TYPE::ACQUIRE,
                $sourceType,
                $sourceId,
                $options['details'] ?? null,
                $expireAt,
                $options['ip_address'] ?? null,
                $options['device_info'] ?? null
            );

            // 触发物品获取事件
            Event::dispatch(new ItemAcquired($userId, $itemId, null, $addedQuantity, $options));

            DB::commit();

            return [
                'success' => true,
                'item_id' => $itemId,
                'quantity' => $addedQuantity,
                'current_quantity' => $currentQuantity,
                'user_item_id' => $userItem->id,
            ];
        } catch (Exception $e) {
            DB::rollBack();
            throw $e;
        }
    }

    /**
     * 添加单独属性物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param array $options 选项
     * @return array 添加结果
     * @throws Exception
     */
    public static function addUniqueItem(int $userId, int $itemId, array $options = []): array
    {
        // 获取物品信息
        $item = ItemModel::findOrFail($itemId);

        // 确保物品是单独属性物品
        if (!$item->is_unique) {
            throw new Exception("物品 {$itemId} 不是单独属性物品");
        }

        // 计算过期时间
        $expireAt = null;
        if (!empty($options['expire_at'])) {
            $expireAt = $options['expire_at'];
        } elseif ($item->default_expire_seconds > 0) {
            $expireAt = now()->addSeconds($item->default_expire_seconds);
        }

        // 获取来源信息
        $sourceType = $options['source_type'] ?? null;
        $sourceId = $options['source_id'] ?? null;

        // 开始事务
        DB::beginTransaction();
        try {
            // 创建物品实例
            $instance = new ItemInstance([
                'item_id' => $itemId,
                'name' => $options['name'] ?? $item->name,
                'display_attributes' => $options['display_attributes'] ?? $item->display_attributes,
                'numeric_attributes' => $options['numeric_attributes'] ?? $item->numeric_attributes,
                'tradable' => $options['tradable'] ?? $item->tradable,
                'is_bound' => $options['is_bound'] ?? false,
                'bound_to' => $options['bound_to'] ?? null,
                'bind_exp_time' => $options['bind_exp_time'] ?? null,
                'expire_at' => $expireAt,
            ]);
            $instance->save();

            // 关联到用户
            $userItem = new ItemUser([
                'user_id' => $userId,
                'item_id' => $itemId,
                'instance_id' => $instance->id,
                'quantity' => 1, // 单独属性物品数量始终为1
                'expire_at' => $expireAt,
            ]);
            $userItem->save();

            // 记录交易日志
            self::logTransaction(
                $userId,
                $itemId,
                $instance->id,
                1,
                TRANSACTION_TYPE::ACQUIRE,
                $sourceType,
                $sourceId,
                $options['details'] ?? null,
                $expireAt,
                $options['ip_address'] ?? null,
                $options['device_info'] ?? null
            );

            // 触发物品获取事件
            Event::dispatch(new ItemAcquired($userId, $itemId, $instance->id, 1, $options));

            DB::commit();

            return [
                'success' => true,
                'item_id' => $itemId,
                'instance_id' => $instance->id,
                'user_item_id' => $userItem->id,
            ];
        } catch (Exception $e) {
            DB::rollBack();
            throw $e;
        }
    }

    /**
     * 消耗统一属性物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $quantity 数量
     * @param array $options 选项
     * @return array 消耗结果
     * @throws Exception
     */
    public static function consumeNormalItem(int $userId, int $itemId, int $quantity, array $options = []): array
    {
        // 获取用户物品
        $userItems = ItemUser::where('user_id', $userId)
            ->where('item_id', $itemId)
            ->whereNull('instance_id')
            ->orderBy('expire_at') // 优先消耗即将过期的物品
            ->get();

        // 检查物品数量是否足够
        $totalQuantity = $userItems->sum('quantity');
        if ($totalQuantity < $quantity) {
            throw new Exception("用户 {$userId} 的物品 {$itemId} 数量不足，需要 {$quantity}，实际 {$totalQuantity}");
        }

        // 获取来源信息
        $sourceType = $options['source_type'] ?? null;
        $sourceId = $options['source_id'] ?? null;

        // 开始消耗物品
        $remainingQuantity = $quantity;
        foreach ($userItems as $userItem) {
            if ($remainingQuantity <= 0) {
                break;
            }

            if ($userItem->quantity <= $remainingQuantity) {
                // 当前堆叠数量不足，全部消耗
                $consumedQuantity = $userItem->quantity;
                $remainingQuantity -= $consumedQuantity;

                // 记录交易日志
                self::logTransaction(
                    $userId,
                    $itemId,
                    null,
                    -$consumedQuantity,
                    TRANSACTION_TYPE::CONSUME,
                    $sourceType,
                    $sourceId,
                    $options['details'] ?? null,
                    null,
                    $options['ip_address'] ?? null,
                    $options['device_info'] ?? null
                );

                // 删除用户物品记录
                $userItem->delete();
            } else {
                // 当前堆叠数量足够，部分消耗
                $consumedQuantity = $remainingQuantity;
                $oldQuantity = $userItem->quantity;
                $newQuantity = $oldQuantity - $consumedQuantity;
                $userItem->quantity = $newQuantity;
                $userItem->save();
                $remainingQuantity = 0;

                // 记录交易日志
                self::logTransaction(
                    $userId,
                    $itemId,
                    null,
                    -$consumedQuantity,
                    TRANSACTION_TYPE::CONSUME,
                    $sourceType,
                    $sourceId,
                    $options['details'] ?? null,
                    null,
                    $options['ip_address'] ?? null,
                    $options['device_info'] ?? null
                );

                // 触发物品数量变更事件
                Event::dispatch(new ItemQuantityChanged(
                    $userId,
                    $itemId,
                    null,
                    $oldQuantity,
                    $newQuantity,
                    $userItem->id,
                    $options
                ));
            }

            // 触发物品消耗事件
            Event::dispatch(new ItemConsumed($userId, $itemId, null, $consumedQuantity, $options));
        }

        return [
            'success' => true,
            'item_id' => $itemId,
            'quantity' => $quantity,
            'remaining_quantity' => $totalQuantity - $quantity,
        ];
    }

    /**
     * 消耗单独属性物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $instanceId 物品实例ID
     * @param array $options 选项
     * @return array 消耗结果
     * @throws Exception
     */
    public static function consumeUniqueItem(int $userId, int $itemId, int $instanceId, array $options = []): array
    {
        // 获取用户物品
        $userItem = ItemUser::where('user_id', $userId)
            ->where('item_id', $itemId)
            ->where('instance_id', $instanceId)
            ->first();

        if (!$userItem) {
            throw new Exception("用户 {$userId} 没有物品实例 {$instanceId}");
        }

        // 获取来源信息
        $sourceType = $options['source_type'] ?? null;
        $sourceId = $options['source_id'] ?? null;

        // 记录交易日志
        self::logTransaction(
            $userId,
            $itemId,
            $instanceId,
            -1,
            TRANSACTION_TYPE::CONSUME,
            $sourceType,
            $sourceId,
            $options['details'] ?? null,
            null,
            $options['ip_address'] ?? null,
            $options['device_info'] ?? null
        );

        // 删除用户物品记录
        $userItem->delete();

        // 是否删除物品实例
        if (!empty($options['delete_instance'])) {
            ItemInstance::where('id', $instanceId)->delete();
        }

        // 触发物品消耗事件
        Event::dispatch(new ItemConsumed($userId, $itemId, $instanceId, 1, $options));

        return [
            'success' => true,
            'item_id' => $itemId,
            'instance_id' => $instanceId,
        ];
    }

    /**
     * 记录物品交易日志
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int|null $instanceId 物品实例ID
     * @param int $quantity 数量
     * @param int $transactionType 交易类型
     * @param string|null $sourceType 来源类型
     * @param int|null $sourceId 来源ID
     * @param array|null $details 详细信息
     * @param string|null $expireAt 过期时间
     * @param string|null $ipAddress IP地址
     * @param string|null $deviceInfo 设备信息
     * @return ItemTransactionLog
     */
    public static function logTransaction(
        int $userId,
        int $itemId,
        ?int $instanceId,
        int $quantity,
        int $transactionType,
        ?string $sourceType = null,
        ?int $sourceId = null,
        ?array $details = null,
        ?string $expireAt = null,
        ?string $ipAddress = null,
        ?string $deviceInfo = null
    ): ItemTransactionLog {
        return ItemTransactionLog::create([
            'user_id' => $userId,
            'item_id' => $itemId,
            'instance_id' => $instanceId,
            'quantity' => $quantity,
            'transaction_type' => $transactionType,
            'source_type' => $sourceType,
            'source_id' => $sourceId,
            'details' => $details,
            'expire_at' => $expireAt,
            'ip_address' => $ipAddress,
            'device_info' => $deviceInfo,
        ]);
    }
}