<?php

namespace App\Module\GameItems\AdminControllers\Actions;

use App\Module\GameItems\Logics\Item;
use App\Module\GameItems\Models\ItemUser;
use Dcat\Admin\Contracts\LazyRenderable;
use Dcat\Admin\Traits\LazyWidget;
use Dcat\Admin\Widgets\Form;
use Illuminate\Support\Facades\DB;

/**
 * 物品数量操作表单
 *
 * 用于快捷调整用户物品数量
 */
class ItemQuantityForm extends Form implements LazyRenderable
{
    use LazyWidget;
    /**
     * 处理表单提交
     *
     * @param array $input
     * @return \Dcat\Admin\Http\JsonResponse
     */
    public function handle(array $input)
    {
        try {
            $id = $this->payload['id'];
            $operationType = $input['operation_type'] ?? '';
            $quantity = (int)($input['quantity'] ?? 0);
            $reason = $input['reason'] ?? '';

            if ($quantity <= 0) {
                return $this->response()->error('数量必须大于0');
            }

            // 获取用户物品记录
            $userItem = ItemUser::find($id);
            if (!$userItem) {
                return $this->response()->error('用户物品记录不存在');
            }

            $adminUser = \Dcat\Admin\Admin::user();

            // 在事务中执行操作
            return DB::transaction(function () use ($userItem, $operationType, $quantity, $reason, $adminUser) {
                // 根据操作类型处理
                if ($operationType === 'add') {
                    // 增加物品数量
                    Item::addNormalItem($userItem->user_id, $userItem->item_id, $quantity, [
                        'source_type' => 'admin_operation',
                        'source_id' => $adminUser->id,
                        'details' => [
                            'operation' => 'add',
                            'reason' => $reason,
                            'admin_user_id' => $adminUser->id,
                            'admin_user_name' => $adminUser->name
                        ]
                    ]);

                    $message = "成功增加 {$quantity} 个物品";
                } elseif ($operationType === 'reduce') {
                    // 减少物品数量
                    if ($userItem->quantity < $quantity) {
                        return $this->response()->error("当前数量不足，最多只能减少 {$userItem->quantity} 个");
                    }

                    Item::consumeNormalItem($userItem->user_id, $userItem->item_id, $quantity, [
                        'source_type' => 'admin_operation',
                        'source_id' => $adminUser->id,
                        'details' => [
                            'operation' => 'reduce',
                            'reason' => $reason,
                            'admin_user_id' => $adminUser->id,
                            'admin_user_name' => $adminUser->name
                        ]
                    ]);

                    $message = "成功减少 {$quantity} 个物品";
                } else {
                    return $this->response()->error('无效的操作类型');
                }

                return $this->response()
                    ->success($message)
                    ->refresh();
            });

        } catch (\Exception $e) {
            return $this->response()->error('操作失败：' . $e->getMessage());
        }
    }

    /**
     * 构建表单
     */
    public function form()
    {
        $this->display('item_name', '物品名称')->value($this->payload['item_name']);
        $this->display('current_quantity', '当前数量')->value($this->payload['current_quantity']);

        $this->radio('operation_type', '操作类型')
            ->options([
                'add' => '增加数量',
                'reduce' => '减少数量'
            ])
            ->default('add')
            ->required();

        $this->number('quantity', '数量')
            ->min(1)
            ->default(1)
            ->required()
            ->help('请输入要增加或减少的数量');

        $this->textarea('reason', '操作原因')
            ->rows(3)
            ->help('请说明此次操作的原因（可选）');
    }
}