<?php

namespace App\Module\GameItems\Logics;

use App\Module\GameItems\Enums\FREEZE_ACTION_TYPE;
use App\Module\GameItems\Enums\FREEZE_REASON_TYPE;
use App\Module\GameItems\Enums\TRANSACTION_TYPE;
use App\Module\GameItems\Events\ItemQuantityChanged;
use App\Module\GameItems\Models\Item;
use App\Module\GameItems\Models\ItemFreezeLog;
use App\Module\GameItems\Models\ItemUser;
use Exception;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Log;
use UCore\Db\Helper;
use UCore\Helper\Logger;

/**
 * 物品冻结逻辑类
 *
 * 处理物品冻结和解冻的核心业务逻辑，包括：
 * - 统一属性物品的冻结/解冻（拆堆模式）
 * - 单独属性物品的冻结/解冻
 * - 冻结状态验证和数量查询
 * - 批量冻结操作
 */
class ItemFreeze
{
    /**
     * 冻结统一属性物品（拆堆模式）
     *
     * 实现逻辑：
     * 1. 查找用户可用的物品堆叠（is_frozen=false）
     * 2. 从可用堆叠中扣除冻结数量
     * 3. 创建新的冻结堆叠记录（is_frozen=true）
     * 4. 记录冻结日志
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $quantity 冻结数量
     * @param FREEZE_REASON_TYPE $reason 冻结原因
     * @param int|null $sourceId 来源ID
     * @param string|null $sourceType 来源类型
     * @param int|null $operatorId 操作员ID
     * @return array 冻结结果
     * @throws Exception
     */
    public static function freezeNormalItem(
        int $userId,
        int $itemId,
        int $quantity,
        FREEZE_REASON_TYPE $reason,
        ?int $sourceId = null,
        ?string $sourceType = null,
        ?int $operatorId = null
    ): array {
        // 检查事务
        Helper::check_tr();

        // 验证冻结操作的合法性
        if (!self::validateFreezeOperation($userId, $itemId, $quantity)) {
            throw new Exception("用户 {$userId} 的物品 {$itemId} 可用数量不足，无法冻结 {$quantity} 个");
        }

        // 获取用户可用的物品堆叠（按过期时间排序，优先冻结即将过期的）
        $availableItems = ItemUser::where('user_id', $userId)
            ->where('item_id', $itemId)
            ->where('is_frozen', false)
            ->whereNull('instance_id')
            ->where('quantity', '>', 0)
            ->orderBy('expire_at')
            ->get();

        $remainingQuantity = $quantity;
        $frozenItems = [];
        $changedItems = []; // 记录所有变更的物品，包括数量减少和冻结创建

        foreach ($availableItems as $userItem) {
            if ($remainingQuantity <= 0) {
                break;
            }

            $availableQuantity = $userItem->quantity;
            $freezeQuantity = min($remainingQuantity, $availableQuantity);

            // 创建冻结日志
            $freezeLog = ItemFreezeLog::createLog(
                $userId,
                $itemId,
                null,
                $freezeQuantity,
                FREEZE_ACTION_TYPE::FREEZE,
                $reason->getName($reason->value),
                $sourceId,
                $sourceType,
                $operatorId
            );

            if ($freezeQuantity == $availableQuantity) {
                 Logger::debug('不拆堆');
                // 全部冻结，直接标记为冻结状态
                $userItem->is_frozen = true;
                $userItem->frozen_log_id = $freezeLog->id;
                $userItem->save();

                $frozenItems[] = [
                    'user_item_id' => $userItem->id,
                    'quantity' => $freezeQuantity,
                    'freeze_log_id' => $freezeLog->id,
                ];

                // 记录冻结状态变更（数量不变，但冻结状态从false变为true）
                $changedItems[] = [
                    'type' => 'freeze_status_change',
                    'user_item_id' => $userItem->id,
                    'old_quantity' => $availableQuantity,
                    'new_quantity' => $availableQuantity,
                    'old_frozen_status' => false,
                    'new_frozen_status' => true,
                    'freeze_log_id' => $freezeLog->id,
                ];
            } else {
                // 部分冻结，需要拆堆
                Logger::debug('拆堆');
                // 减少原堆叠数量
                $userItem->quantity = $availableQuantity - $freezeQuantity;
                $userItem->save();

                // 记录原堆叠数量减少（非冻结物品减少）
                $changedItems[] = [
                    'type' => 'quantity_decrease',
                    'user_item_id' => $userItem->id,
                    'old_quantity' => $availableQuantity,
                    'new_quantity' => $availableQuantity - $freezeQuantity,
                    'old_frozen_status' => false,
                    'new_frozen_status' => false, // 冻结状态不变，仍为未冻结
                    'freeze_log_id' => null,
                ];

                // 创建新的冻结堆叠
                $frozenItem = new ItemUser([
                    'user_id' => $userId,
                    'item_id' => $itemId,
                    'instance_id' => null,
                    'quantity' => $freezeQuantity,
                    'expire_at' => $userItem->expire_at,
                    'is_frozen' => true,
                    'frozen_log_id' => $freezeLog->id,
                ]);
                $frozenItem->save();

                $frozenItems[] = [
                    'user_item_id' => $frozenItem->id,
                    'quantity' => $freezeQuantity,
                    'freeze_log_id' => $freezeLog->id,
                ];

                // 记录新冻结堆叠创建（冻结物品创建）
                $changedItems[] = [
                    'type' => 'frozen_item_create',
                    'user_item_id' => $frozenItem->id,
                    'old_quantity' => 0, // 新创建的物品，旧数量为0
                    'new_quantity' => $freezeQuantity,
                    'old_frozen_status' => null, // 新创建的物品，旧冻结状态为null
                    'new_frozen_status' => true,
                    'freeze_log_id' => $freezeLog->id,
                ];
            }

            $remainingQuantity -= $freezeQuantity;
        }

        if ($remainingQuantity > 0) {
            throw new Exception("冻结操作失败，剩余未冻结数量：{$remainingQuantity}");
        }

        // 触发物品变更事件（包括非冻结减少和冻结创建）
        foreach ($changedItems as $changedItem) {
            event(new ItemQuantityChanged(
                $userId,
                $itemId,
                null, // 统一属性物品没有实例ID
                $changedItem['old_quantity'],
                $changedItem['new_quantity'],
                $changedItem['user_item_id'],
                $changedItem['old_frozen_status'],
                $changedItem['new_frozen_status'],
                [
                    'freeze_action' => 'freeze',
                    'change_type' => $changedItem['type'], // 变更类型：quantity_decrease, frozen_item_create, freeze_status_change
                    'freeze_log_id' => $changedItem['freeze_log_id'],
                    'reason' => $reason->getName($reason->value),
                    'source_id' => $sourceId,
                    'source_type' => $sourceType,
                    'operator_id' => $operatorId,
                ]
            ));
        }

        return [
            'success' => true,
            'user_id' => $userId,
            'item_id' => $itemId,
            'frozen_quantity' => $quantity,
            'frozen_items' => $frozenItems,
        ];
    }

    /**
     * 冻结单独属性物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $instanceId 物品实例ID
     * @param FREEZE_REASON_TYPE $reason 冻结原因
     * @param int|null $sourceId 来源ID
     * @param string|null $sourceType 来源类型
     * @param int|null $operatorId 操作员ID
     * @return array 冻结结果
     * @throws Exception
     */
    public static function freezeUniqueItem(
        int $userId,
        int $itemId,
        int $instanceId,
        FREEZE_REASON_TYPE $reason,
        ?int $sourceId = null,
        ?string $sourceType = null,
        ?int $operatorId = null
    ): array {
        // 检查事务
        Helper::check_tr();

        // 查找用户的单独属性物品
        $userItem = ItemUser::where('user_id', $userId)
            ->where('item_id', $itemId)
            ->where('instance_id', $instanceId)
            ->where('is_frozen', false)
            ->first();

        if (!$userItem) {
            throw new Exception("用户 {$userId} 没有可冻结的物品实例 {$instanceId}");
        }

        // 创建冻结日志
        $freezeLog = ItemFreezeLog::createLog(
            $userId,
            $itemId,
            $instanceId,
            1, // 单独属性物品数量始终为1
            FREEZE_ACTION_TYPE::FREEZE,
            $reason->getName($reason->value),
            $sourceId,
            $sourceType,
            $operatorId
        );

        // 标记为冻结状态
        $userItem->is_frozen = true;
        $userItem->frozen_log_id = $freezeLog->id;
        $userItem->save();

        // 触发物品变更事件（冻结状态变更）
        event(new ItemQuantityChanged(
            $userId,
            $itemId,
            $instanceId,
            1, // 旧数量（单独属性物品数量始终为1）
            1, // 新数量（数量未变）
            $userItem->id,
            false, // 旧冻结状态：未冻结
            true,  // 新冻结状态：已冻结
            [
                'freeze_action' => 'freeze',
                'freeze_log_id' => $freezeLog->id,
                'reason' => $reason->getName($reason->value),
                'source_id' => $sourceId,
                'source_type' => $sourceType,
                'operator_id' => $operatorId,
            ]
        ));

        return [
            'success' => true,
            'user_id' => $userId,
            'item_id' => $itemId,
            'instance_id' => $instanceId,
            'user_item_id' => $userItem->id,
            'freeze_log_id' => $freezeLog->id,
        ];
    }

    /**
     * 解冻物品（通过冻结日志ID）
     *
     * @param int $freezeLogId 冻结日志ID
     * @return array 解冻结果
     * @throws Exception
     */
    public static function unfreezeByLogId(int $freezeLogId): array
    {
        // 检查事务
        Helper::check_tr();

        // 查找冻结日志
        $freezeLog = ItemFreezeLog::find($freezeLogId);
        if (!$freezeLog) {
            throw new Exception("冻结日志 {$freezeLogId} 不存在");
        }

        if (!$freezeLog->isFreeze()) {
            throw new Exception("日志 {$freezeLogId} 不是冻结操作记录");
        }

        // 查找对应的冻结物品
        $frozenItem = ItemUser::where('frozen_log_id', $freezeLogId)
            ->where('is_frozen', true)
            ->first();

        if (!$frozenItem) {
            throw new Exception("未找到冻结日志 {$freezeLogId} 对应的冻结物品");
        }

        // 获取原始冻结数量和当前剩余数量
        $originalFrozenQuantity = $freezeLog->quantity;
        $currentQuantity = $frozenItem->quantity;

        if ($currentQuantity <= 0) {
            // 冻结堆已被完全消耗，无法解冻
            throw new Exception("冻结日志 {$freezeLogId} 对应的冻结物品已被完全消耗，无法解冻");
        }

        // 检查是否需要补足差额
        $shortageQuantity = $originalFrozenQuantity - $currentQuantity;

        if ($shortageQuantity > 0) {
            // 冻结堆被部分消耗，需要从用户其他可用物品中补足
            $availableQuantity = self::getAvailableQuantity(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id
            );

            if ($availableQuantity < $shortageQuantity) {
                throw new Exception(
                    "解冻失败：原始冻结数量 {$originalFrozenQuantity}，当前冻结剩余 {$currentQuantity}，" .
                    "需要补足 {$shortageQuantity}，但用户可用数量只有 {$availableQuantity}"
                );
            }

            // 从用户可用物品中扣除差额，补足到冻结堆
            $availableItems = ItemUser::where('user_id', $frozenItem->user_id)
                ->where('item_id', $frozenItem->item_id)
                ->where('is_frozen', false)
                ->whereNull('instance_id')
                ->where('quantity', '>', 0)
                ->orderBy('expire_at')
                ->get();

            $remainingShortage = $shortageQuantity;
            $transferDetails = []; // 记录转移详情

            foreach ($availableItems as $availableItem) {
                if ($remainingShortage <= 0) break;

                $deductQuantity = min($availableItem->quantity, $remainingShortage);
                $oldQuantity = $availableItem->quantity;
                $newQuantity = $oldQuantity - $deductQuantity;

                // 更新可用物品数量
                $availableItem->quantity = $newQuantity;
                $availableItem->save();

                // 记录转移详情
                $transferDetails[] = [
                    'from_user_item_id' => $availableItem->id,
                    'transferred_quantity' => $deductQuantity,
                    'old_quantity' => $oldQuantity,
                    'new_quantity' => $newQuantity,
                ];

                // 记录交易日志（从可用物品扣除）
                \App\Module\GameItems\Logics\Item::logTransaction(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    null,
                    -$deductQuantity,
                    TRANSACTION_TYPE::TRADE_OUT, // 使用交易失去类型
                    'unfreeze_compensation',
                    $freezeLogId,
                    ["解冻补足转移：从可用物品转移 {$deductQuantity} 个到冻结堆"]
                );

                // 触发物品数量变更事件（可用物品减少）
                event(new ItemQuantityChanged(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    null,
                    $oldQuantity,
                    $newQuantity,
                    $availableItem->id,
                    false, // 旧冻结状态：未冻结
                    false, // 新冻结状态：未冻结
                    [
                        'action' => 'unfreeze_compensation_transfer_out',
                        'freeze_log_id' => $freezeLogId,
                        'transferred_quantity' => $deductQuantity,
                    ]
                ));

                $remainingShortage -= $deductQuantity;
            }

            // 将补足的数量加到冻结堆
            $oldFrozenQuantity = $frozenItem->quantity;
            $frozenItem->quantity = $originalFrozenQuantity;
            $frozenItem->save();

            // 记录交易日志（向冻结堆补足）
            \App\Module\GameItems\Logics\Item::logTransaction(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id,
                $shortageQuantity,
                TRANSACTION_TYPE::TRADE_IN, // 使用交易获得类型
                'unfreeze_compensation',
                $freezeLogId,
                ["解冻补足转移：向冻结堆补足 {$shortageQuantity} 个，转移详情：" . json_encode($transferDetails)]
            );

            // 触发物品数量变更事件（冻结堆增加）
            event(new ItemQuantityChanged(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id,
                $oldFrozenQuantity,
                $originalFrozenQuantity,
                $frozenItem->id,
                true, // 旧冻结状态：已冻结
                true, // 新冻结状态：已冻结
                [
                    'action' => 'unfreeze_compensation_transfer_in',
                    'freeze_log_id' => $freezeLogId,
                    'compensated_quantity' => $shortageQuantity,
                    'transfer_details' => $transferDetails,
                ]
            ));
        }

        // 创建解冻日志，记录原始冻结数量
        $unfreezeLog = ItemFreezeLog::createLog(
            $frozenItem->user_id,
            $frozenItem->item_id,
            $frozenItem->instance_id,
            $originalFrozenQuantity, // 解冻原始数量
            FREEZE_ACTION_TYPE::UNFREEZE,
            "解冻操作，原冻结日志ID: {$freezeLogId}，原始冻结数量: {$originalFrozenQuantity}" .
            ($shortageQuantity > 0 ? "，补足差额: {$shortageQuantity}" : ""),
            $freezeLog->source_id,
            $freezeLog->source_type,
            $freezeLog->operator_id
        );

        // 解冻物品（保持独立，不合并堆叠）
        $frozenItem->is_frozen = false;
        $frozenItem->frozen_log_id = null;
        $frozenItem->save();

        // 触发物品变更事件（解冻状态变更）
        event(new ItemQuantityChanged(
            $frozenItem->user_id,
            $frozenItem->item_id,
            $frozenItem->instance_id,
            $originalFrozenQuantity, // 旧数量（恢复到原始数量）
            $originalFrozenQuantity, // 新数量（数量未变，只是解冻状态变更）
            $frozenItem->id,
            true,  // 旧冻结状态：已冻结
            false, // 新冻结状态：未冻结
            [
                'freeze_action' => 'unfreeze',
                'unfreeze_log_id' => $unfreezeLog->id,
                'original_freeze_log_id' => $freezeLogId,
                'original_frozen_quantity' => $originalFrozenQuantity,
                'shortage_compensated' => $shortageQuantity,
                'source_id' => $freezeLog->source_id,
                'source_type' => $freezeLog->source_type,
                'operator_id' => $freezeLog->operator_id,
            ]
        ));

        return [
            'success' => true,
            'user_id' => $frozenItem->user_id,
            'item_id' => $frozenItem->item_id,
            'instance_id' => $frozenItem->instance_id,
            'unfrozen_quantity' => $originalFrozenQuantity, // 返回原始冻结数量
            'shortage_compensated' => $shortageQuantity, // 返回补足的差额
            'user_item_id' => $frozenItem->id,
            'unfreeze_log_id' => $unfreezeLog->id,
        ];
    }

    /**
     * 检查用户可用物品数量（排除冻结堆叠）
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int|null $instanceId 实例ID
     * @return int 可用数量
     */
    public static function getAvailableQuantity(
        int $userId,
        int $itemId,
        ?int $instanceId = null
    ): int {
        return ItemUser::getAvailableQuantity($userId, $itemId, $instanceId);
    }

    /**
     * 验证用户是否有足够的可用物品
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $requiredQuantity 需要的数量
     * @param int|null $instanceId 实例ID
     * @return bool 是否有足够的可用物品
     */
    public static function checkAvailableQuantity(
        int $userId,
        int $itemId,
        int $requiredQuantity,
        ?int $instanceId = null
    ): bool {
        $availableQuantity = self::getAvailableQuantity($userId, $itemId, $instanceId);
        return $availableQuantity >= $requiredQuantity;
    }

    /**
     * 验证冻结操作的合法性
     *
     * @param int $userId 用户ID
     * @param int $itemId 物品ID
     * @param int $quantity 冻结数量
     * @param int|null $instanceId 实例ID
     * @return bool 是否可以冻结
     */
    public static function validateFreezeOperation(
        int $userId,
        int $itemId,
        int $quantity,
        ?int $instanceId = null
    ): bool {
        // 检查物品是否存在
        $item = Item::find($itemId);
        if (!$item) {
            return false;
        }

        // 检查数量是否合法
        if ($quantity <= 0) {
            return false;
        }

        // 检查可用数量是否足够
        return self::checkAvailableQuantity($userId, $itemId, $quantity, $instanceId);
    }

    /**
     * 批量冻结物品
     *
     * @param int $userId 用户ID
     * @param array $items 物品列表 [['item_id' => 1, 'quantity' => 10], ...]
     * @param FREEZE_REASON_TYPE $reason 冻结原因
     * @param int|null $sourceId 来源ID
     * @param string|null $sourceType 来源类型
     * @param int|null $operatorId 操作员ID
     * @return array 冻结结果
     * @throws Exception
     */
    public static function batchFreezeItems(
        int $userId,
        array $items,
        FREEZE_REASON_TYPE $reason,
        ?int $sourceId = null,
        ?string $sourceType = null,
        ?int $operatorId = null
    ): array {
        // 检查事务
        Helper::check_tr();

        $results = [];
        $errors = [];

        foreach ($items as $itemData) {
            $itemId = $itemData['item_id'];
            $quantity = $itemData['quantity'] ?? 1;
            $instanceId = $itemData['instance_id'] ?? null;

            try {
                if ($instanceId) {
                    // 单独属性物品
                    $result = self::freezeUniqueItem(
                        $userId,
                        $itemId,
                        $instanceId,
                        $reason,
                        $sourceId,
                        $sourceType,
                        $operatorId
                    );
                } else {
                    // 统一属性物品
                    $result = self::freezeNormalItem(
                        $userId,
                        $itemId,
                        $quantity,
                        $reason,
                        $sourceId,
                        $sourceType,
                        $operatorId
                    );
                }
                $results[] = $result;
            } catch (Exception $e) {
                $errors[] = [
                    'item_id' => $itemId,
                    'instance_id' => $instanceId,
                    'quantity' => $quantity,
                    'error' => $e->getMessage(),
                ];
            }
        }

        if (!empty($errors)) {
            throw new Exception("批量冻结操作部分失败：" . json_encode($errors, JSON_UNESCAPED_UNICODE));
        }

        return [
            'success' => true,
            'user_id' => $userId,
            'frozen_items_count' => count($results),
            'results' => $results,
        ];
    }

    /**
     * 检查冻结物品是否过期并处理
     *
     * @param int $userId 用户ID
     * @return int 处理的过期冻结物品数量
     */
    public static function handleExpiredFrozenItems(int $userId): int
    {
        // 查找过期的冻结物品
        $expiredFrozenItems = ItemUser::where('user_id', $userId)
            ->where('is_frozen', true)
            ->where('expire_at', '<', now())
            ->whereNotNull('expire_at')
            ->get();

        $processedCount = 0;

        foreach ($expiredFrozenItems as $frozenItem) {
            try {
                // 先解冻再处理过期
                if ($frozenItem->frozen_log_id) {
                    self::unfreezeByLogId($frozenItem->frozen_log_id);
                }

                // 处理过期逻辑（这里可以根据业务需求决定是删除还是其他处理）
                // 暂时设置数量为0，不删除记录
                $frozenItem->quantity = 0;
                $frozenItem->save();

                $processedCount++;
            } catch (Exception $e) {
                // 记录错误日志，但不中断处理
                Log::error("处理过期冻结物品失败", [
                    'user_id' => $userId,
                    'item_user_id' => $frozenItem->id,
                    'error' => $e->getMessage(),
                ]);
            }
        }

        return $processedCount;
    }

    /**
     * 获取用户的冻结物品列表
     *
     * @param int $userId 用户ID
     * @param array $filters 过滤条件
     * @return Collection 冻结物品集合
     */
    public static function getFrozenItems(int $userId, array $filters = []): Collection
    {
        $query = ItemUser::where('user_id', $userId)
            ->where('is_frozen', true)
            ->with(['item', 'instance', 'freezeLog']);

        // 应用过滤条件
        if (isset($filters['item_id'])) {
            $query->where('item_id', $filters['item_id']);
        }

        if (isset($filters['source_type'])) {
            $query->whereHas('freezeLog', function ($q) use ($filters) {
                $q->where('source_type', $filters['source_type']);
            });
        }

        if (isset($filters['reason'])) {
            $query->whereHas('freezeLog', function ($q) use ($filters) {
                $q->where('reason', 'like', '%' . $filters['reason'] . '%');
            });
        }

        return $query->get();
    }

    /**
     * 获取冻结统计信息
     *
     * @param int $userId 用户ID
     * @return array 统计信息
     */
    public static function getFreezeStatistics(int $userId): array
    {
        $frozenItems = ItemUser::where('user_id', $userId)
            ->where('is_frozen', true)
            ->with(['item', 'freezeLog'])
            ->get();

        $statistics = [
            'total_frozen_items' => $frozenItems->count(),
            'total_frozen_quantity' => $frozenItems->sum('quantity'),
            'frozen_by_reason' => [],
            'frozen_by_source_type' => [],
        ];

        // 按原因分组统计
        $frozenItems->groupBy('freezeLog.reason')->each(function ($items, $reason) use (&$statistics) {
            $statistics['frozen_by_reason'][$reason] = [
                'count' => $items->count(),
                'quantity' => $items->sum('quantity'),
            ];
        });

        // 按来源类型分组统计
        $frozenItems->groupBy('freezeLog.source_type')->each(function ($items, $sourceType) use (&$statistics) {
            $statistics['frozen_by_source_type'][$sourceType] = [
                'count' => $items->count(),
                'quantity' => $items->sum('quantity'),
            ];
        });

        return $statistics;
    }

    /**
     * 安全解冻物品（处理已被消耗的冻结堆）
     *
     * 与unfreezeByLogId不同，此方法会检查冻结物品是否已被消耗：
     * - 如果冻结物品数量为0，则标记为已处理，不抛出异常
     * - 如果冻结物品数量大于0，则正常解冻
     * - 返回详细的处理结果信息
     *
     * @param int $freezeLogId 冻结日志ID
     * @return array 解冻结果
     * @throws Exception
     */
    public static function safeUnfreezeByLogId(int $freezeLogId): array
    {
        // 检查事务
        Helper::check_tr();

        // 查找冻结日志
        $freezeLog = ItemFreezeLog::find($freezeLogId);
        if (!$freezeLog) {
            throw new Exception("冻结日志 {$freezeLogId} 不存在");
        }

        if (!$freezeLog->isFreeze()) {
            throw new Exception("日志 {$freezeLogId} 不是冻结操作记录");
        }

        // 查找对应的冻结物品
        $frozenItem = ItemUser::where('frozen_log_id', $freezeLogId)
            ->where('is_frozen', true)
            ->first();

        if (!$frozenItem) {
            // 冻结物品不存在，可能已被删除或处理
            return [
                'success' => true,
                'status' => 'already_processed',
                'message' => "冻结日志 {$freezeLogId} 对应的冻结物品不存在，可能已被处理",
                'freeze_log_id' => $freezeLogId,
                'unfrozen_quantity' => 0,
            ];
        }

        // 获取原始冻结数量和当前剩余数量
        $originalFrozenQuantity = $freezeLog->quantity;
        $currentQuantity = $frozenItem->quantity;

        if ($currentQuantity <= 0) {
            // 冻结堆已被完全消耗，尝试从用户其他可用物品中补足
            $availableQuantity = self::getAvailableQuantity(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id
            );

            if ($availableQuantity < $originalFrozenQuantity) {
                // 用户可用数量不足，无法完全解冻
                return [
                    'success' => false,
                    'status' => 'insufficient_available',
                    'message' => "冻结物品已被完全消耗，用户可用数量不足以补足原始冻结数量",
                    'user_id' => $frozenItem->user_id,
                    'item_id' => $frozenItem->item_id,
                    'instance_id' => $frozenItem->instance_id,
                    'unfrozen_quantity' => 0,
                    'original_frozen_quantity' => $originalFrozenQuantity,
                    'current_frozen_quantity' => $currentQuantity,
                    'available_quantity' => $availableQuantity,
                    'shortage_quantity' => $originalFrozenQuantity - $availableQuantity,
                ];
            }

            // 从用户可用物品中补足全部数量
            $availableItems = ItemUser::where('user_id', $frozenItem->user_id)
                ->where('item_id', $frozenItem->item_id)
                ->where('is_frozen', false)
                ->whereNull('instance_id')
                ->where('quantity', '>', 0)
                ->orderBy('expire_at')
                ->get();

            $remainingQuantity = $originalFrozenQuantity;
            $transferDetails = []; // 记录转移详情

            foreach ($availableItems as $availableItem) {
                if ($remainingQuantity <= 0) break;

                $deductQuantity = min($availableItem->quantity, $remainingQuantity);
                $oldQuantity = $availableItem->quantity;
                $newQuantity = $oldQuantity - $deductQuantity;

                // 更新可用物品数量
                $availableItem->quantity = $newQuantity;
                $availableItem->save();

                // 记录转移详情
                $transferDetails[] = [
                    'from_user_item_id' => $availableItem->id,
                    'transferred_quantity' => $deductQuantity,
                    'old_quantity' => $oldQuantity,
                    'new_quantity' => $newQuantity,
                ];

                // 记录交易日志（从可用物品扣除）
                \App\Module\GameItems\Logics\Item::logTransaction(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    null,
                    -$deductQuantity,
                    TRANSACTION_TYPE::TRADE_OUT,
                    'safe_unfreeze_compensation',
                    $freezeLogId,
                    ["安全解冻补足转移：从可用物品转移 {$deductQuantity} 个到冻结堆"]
                );

                // 触发物品数量变更事件（可用物品减少）
                event(new ItemQuantityChanged(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    null,
                    $oldQuantity,
                    $newQuantity,
                    $availableItem->id,
                    false, // 旧冻结状态：未冻结
                    false, // 新冻结状态：未冻结
                    [
                        'action' => 'safe_unfreeze_compensation_transfer_out',
                        'freeze_log_id' => $freezeLogId,
                        'transferred_quantity' => $deductQuantity,
                    ]
                ));

                $remainingQuantity -= $deductQuantity;
            }

            // 恢复冻结堆到原始数量
            $oldFrozenQuantity = $frozenItem->quantity;
            $frozenItem->quantity = $originalFrozenQuantity;
            $frozenItem->save();

            // 记录交易日志（向冻结堆补足）
            \App\Module\GameItems\Logics\Item::logTransaction(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id,
                $originalFrozenQuantity,
                TRANSACTION_TYPE::TRADE_IN,
                'safe_unfreeze_compensation',
                $freezeLogId,
                ["安全解冻补足转移：向冻结堆补足 {$originalFrozenQuantity} 个，转移详情：" . json_encode($transferDetails)]
            );

            // 触发物品数量变更事件（冻结堆增加）
            event(new ItemQuantityChanged(
                $frozenItem->user_id,
                $frozenItem->item_id,
                $frozenItem->instance_id,
                $oldFrozenQuantity,
                $originalFrozenQuantity,
                $frozenItem->id,
                true, // 旧冻结状态：已冻结
                true, // 新冻结状态：已冻结
                [
                    'action' => 'safe_unfreeze_compensation_transfer_in',
                    'freeze_log_id' => $freezeLogId,
                    'compensated_quantity' => $originalFrozenQuantity,
                    'transfer_details' => $transferDetails,
                ]
            ));

            $shortageQuantity = $originalFrozenQuantity;
        } else {
            // 检查是否需要补足差额
            $shortageQuantity = $originalFrozenQuantity - $currentQuantity;

            if ($shortageQuantity > 0) {
                // 冻结堆被部分消耗，需要从用户其他可用物品中补足
                $availableQuantity = self::getAvailableQuantity(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    $frozenItem->instance_id
                );

                if ($availableQuantity < $shortageQuantity) {
                    return [
                        'success' => false,
                        'status' => 'insufficient_available',
                        'message' => "解冻失败：需要补足 {$shortageQuantity}，但用户可用数量只有 {$availableQuantity}",
                        'user_id' => $frozenItem->user_id,
                        'item_id' => $frozenItem->item_id,
                        'instance_id' => $frozenItem->instance_id,
                        'unfrozen_quantity' => 0,
                        'original_frozen_quantity' => $originalFrozenQuantity,
                        'current_frozen_quantity' => $currentQuantity,
                        'shortage_quantity' => $shortageQuantity,
                        'available_quantity' => $availableQuantity,
                    ];
                }

                // 从用户可用物品中扣除差额，补足到冻结堆
                $availableItems = ItemUser::where('user_id', $frozenItem->user_id)
                    ->where('item_id', $frozenItem->item_id)
                    ->where('is_frozen', false)
                    ->whereNull('instance_id')
                    ->where('quantity', '>', 0)
                    ->orderBy('expire_at')
                    ->get();

                $remainingShortage = $shortageQuantity;
                $transferDetails = []; // 记录转移详情

                foreach ($availableItems as $availableItem) {
                    if ($remainingShortage <= 0) break;

                    $deductQuantity = min($availableItem->quantity, $remainingShortage);
                    $oldQuantity = $availableItem->quantity;
                    $newQuantity = $oldQuantity - $deductQuantity;

                    // 更新可用物品数量
                    $availableItem->quantity = $newQuantity;
                    $availableItem->save();

                    // 记录转移详情
                    $transferDetails[] = [
                        'from_user_item_id' => $availableItem->id,
                        'transferred_quantity' => $deductQuantity,
                        'old_quantity' => $oldQuantity,
                        'new_quantity' => $newQuantity,
                    ];

                    // 记录交易日志（从可用物品扣除）
                    \App\Module\GameItems\Logics\Item::logTransaction(
                        $frozenItem->user_id,
                        $frozenItem->item_id,
                        null,
                        -$deductQuantity,
                        TRANSACTION_TYPE::TRADE_OUT,
                        'safe_unfreeze_partial_compensation',
                        $freezeLogId,
                        ["安全解冻部分补足转移：从可用物品转移 {$deductQuantity} 个到冻结堆"]
                    );

                    // 触发物品数量变更事件（可用物品减少）
                    event(new ItemQuantityChanged(
                        $frozenItem->user_id,
                        $frozenItem->item_id,
                        null,
                        $oldQuantity,
                        $newQuantity,
                        $availableItem->id,
                        false, // 旧冻结状态：未冻结
                        false, // 新冻结状态：未冻结
                        [
                            'action' => 'safe_unfreeze_partial_compensation_transfer_out',
                            'freeze_log_id' => $freezeLogId,
                            'transferred_quantity' => $deductQuantity,
                        ]
                    ));

                    $remainingShortage -= $deductQuantity;
                }

                // 将补足的数量加到冻结堆
                $oldFrozenQuantity = $frozenItem->quantity;
                $frozenItem->quantity = $originalFrozenQuantity;
                $frozenItem->save();

                // 记录交易日志（向冻结堆补足）
                \App\Module\GameItems\Logics\Item::logTransaction(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    $frozenItem->instance_id,
                    $shortageQuantity,
                    TRANSACTION_TYPE::TRADE_IN,
                    'safe_unfreeze_partial_compensation',
                    $freezeLogId,
                    ["安全解冻部分补足转移：向冻结堆补足 {$shortageQuantity} 个，转移详情：" . json_encode($transferDetails)]
                );

                // 触发物品数量变更事件（冻结堆增加）
                event(new ItemQuantityChanged(
                    $frozenItem->user_id,
                    $frozenItem->item_id,
                    $frozenItem->instance_id,
                    $oldFrozenQuantity,
                    $originalFrozenQuantity,
                    $frozenItem->id,
                    true, // 旧冻结状态：已冻结
                    true, // 新冻结状态：已冻结
                    [
                        'action' => 'safe_unfreeze_partial_compensation_transfer_in',
                        'freeze_log_id' => $freezeLogId,
                        'compensated_quantity' => $shortageQuantity,
                        'transfer_details' => $transferDetails,
                    ]
                ));
            }
        }

        // 创建解冻日志
        $unfreezeLog = ItemFreezeLog::createLog(
            $frozenItem->user_id,
            $frozenItem->item_id,
            $frozenItem->instance_id,
            $originalFrozenQuantity,
            FREEZE_ACTION_TYPE::UNFREEZE,
            "安全解冻操作，原冻结日志ID: {$freezeLogId}，原始冻结数量: {$originalFrozenQuantity}" .
            ($shortageQuantity > 0 ? "，补足差额: {$shortageQuantity}" : ""),
            $freezeLog->source_id,
            $freezeLog->source_type,
            $freezeLog->operator_id
        );

        // 解冻物品
        $frozenItem->is_frozen = false;
        $frozenItem->frozen_log_id = null;
        $frozenItem->save();

        // 触发物品变更事件
        event(new ItemQuantityChanged(
            $frozenItem->user_id,
            $frozenItem->item_id,
            $frozenItem->instance_id,
            $originalFrozenQuantity,
            $originalFrozenQuantity,
            $frozenItem->id,
            true,  // 旧冻结状态：已冻结
            false, // 新冻结状态：未冻结
            [
                'freeze_action' => 'safe_unfreeze',
                'unfreeze_log_id' => $unfreezeLog->id,
                'original_freeze_log_id' => $freezeLogId,
                'original_frozen_quantity' => $originalFrozenQuantity,
                'shortage_compensated' => $shortageQuantity,
                'source_id' => $freezeLog->source_id,
                'source_type' => $freezeLog->source_type,
                'operator_id' => $freezeLog->operator_id,
            ]
        ));

        return [
            'success' => true,
            'status' => 'unfrozen',
            'message' => "成功解冻物品",
            'user_id' => $frozenItem->user_id,
            'item_id' => $frozenItem->item_id,
            'instance_id' => $frozenItem->instance_id,
            'unfrozen_quantity' => $originalFrozenQuantity,
            'shortage_compensated' => $shortageQuantity,
            'user_item_id' => $frozenItem->id,
            'unfreeze_log_id' => $unfreezeLog->id,
        ];
    }

    /**
     * 获取已被消耗的冻结物品统计
     *
     * 查找所有数量为0的冻结物品记录并返回统计信息
     * 注意：不删除记录，只提供统计信息
     *
     * @param int|null $userId 用户ID，为null时统计所有用户
     * @return array 统计结果
     */
    public static function getConsumedFrozenItemsStatistics(?int $userId = null): array
    {
        $query = ItemUser::where('is_frozen', true)
            ->where('quantity', '<=', 0);

        if ($userId) {
            $query->where('user_id', $userId);
        }

        $consumedFrozenItems = $query->get();

        $statistics = [
            'total_count' => $consumedFrozenItems->count(),
            'by_user' => [],
            'by_item' => [],
            'items' => [],
        ];

        foreach ($consumedFrozenItems as $frozenItem) {
            // 按用户统计
            if (!isset($statistics['by_user'][$frozenItem->user_id])) {
                $statistics['by_user'][$frozenItem->user_id] = 0;
            }
            $statistics['by_user'][$frozenItem->user_id]++;

            // 按物品统计
            if (!isset($statistics['by_item'][$frozenItem->item_id])) {
                $statistics['by_item'][$frozenItem->item_id] = 0;
            }
            $statistics['by_item'][$frozenItem->item_id]++;

            // 详细记录
            $statistics['items'][] = [
                'user_id' => $frozenItem->user_id,
                'item_id' => $frozenItem->item_id,
                'instance_id' => $frozenItem->instance_id,
                'user_item_id' => $frozenItem->id,
                'frozen_log_id' => $frozenItem->frozen_log_id,
                'quantity' => $frozenItem->quantity,
            ];
        }

        return $statistics;
    }
}