<?php

namespace App\Filament\Resources;

use App\Filament\Resources\ActivityLogResource\Pages;
use App\Exports\ActivityLogExport;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Maatwebsite\Excel\Facades\Excel;
use Spatie\Activitylog\Models\Activity;

class ActivityLogResource extends Resource
{
    protected static ?string $model = Activity::class;

    protected static ?string $navigationIcon = 'heroicon-o-clipboard-document-list';

    protected static ?string $navigationLabel = '操作日志';

    protected static ?string $modelLabel = '操作日志';

    protected static ?string $pluralModelLabel = '操作日志';

    protected static ?int $navigationSort = 2;

    // 禁用创建功能
    public static function canCreate(): bool
    {
        return false;
    }

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                // 只读资源，不需要表单
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('created_at')
                    ->label('操作时间')
                    ->dateTime('Y-m-d H:i:s')
                    ->sortable()
                    ->searchable(),

                Tables\Columns\TextColumn::make('causer.name')
                    ->label('操作用户')
                    ->searchable()
                    ->sortable()
                    ->default('系统')
                    ->placeholder('系统'),

                Tables\Columns\TextColumn::make('description')
                    ->label('操作类型')
                    ->badge()
                    ->color(fn (string $state): string => match ($state) {
                        'created' => 'success',
                        'updated' => 'info',
                        'deleted' => 'danger',
                        default => 'gray',
                    })
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'created' => '创建',
                        'updated' => '更新',
                        'deleted' => '删除',
                        default => $state,
                    })
                    ->searchable()
                    ->sortable(),

                Tables\Columns\TextColumn::make('subject_type')
                    ->label('操作对象')
                    ->formatStateUsing(function (?string $state): string {
                        if (!$state) {
                            return '-';
                        }
                        // 提取类名
                        $className = class_basename($state);
                        // 转换为中文
                        return match ($className) {
                            'SystemSetting' => '系统设置',
                            'User' => '用户',
                            'Document' => '文档',
                            'Group' => '分组',
                            'Terminal' => '终端',
                            'SopTemplate' => 'SOP模板',
                            default => $className,
                        };
                    })
                    ->searchable()
                    ->sortable(),

                Tables\Columns\TextColumn::make('subject_id')
                    ->label('对象ID')
                    ->searchable()
                    ->sortable()
                    ->toggleable(),

                Tables\Columns\TextColumn::make('properties')
                    ->label('详情')
                    ->limit(50)
                    ->tooltip(function (Tables\Columns\TextColumn $column): ?string {
                        $state = $column->getState();
                        if (is_array($state)) {
                            return json_encode($state, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
                        }
                        return null;
                    })
                    ->formatStateUsing(function ($state): string {
                        if (is_array($state)) {
                            $summary = [];
                            if (isset($state['attributes'])) {
                                $summary[] = '新值: ' . count($state['attributes']) . '项';
                            }
                            if (isset($state['old'])) {
                                $summary[] = '旧值: ' . count($state['old']) . '项';
                            }
                            return implode(', ', $summary) ?: '无变更';
                        }
                        return '-';
                    })
                    ->toggleable(),
            ])
            ->defaultSort('created_at', 'desc')
            ->filters([
                // 时间范围筛选
                Tables\Filters\Filter::make('created_at')
                    ->form([
                        \Filament\Forms\Components\DatePicker::make('created_from')
                            ->label('开始时间')
                            ->placeholder('选择开始时间'),
                        \Filament\Forms\Components\DatePicker::make('created_until')
                            ->label('结束时间')
                            ->placeholder('选择结束时间'),
                    ])
                    ->query(function ($query, array $data) {
                        return $query
                            ->when($data['created_from'], fn ($query, $date) => $query->whereDate('created_at', '>=', $date))
                            ->when($data['created_until'], fn ($query, $date) => $query->whereDate('created_at', '<=', $date));
                    })
                    ->indicateUsing(function (array $data): array {
                        $indicators = [];
                        if ($data['created_from'] ?? null) {
                            $indicators[] = Tables\Filters\Indicator::make('开始时间: ' . \Carbon\Carbon::parse($data['created_from'])->format('Y-m-d'))
                                ->removeField('created_from');
                        }
                        if ($data['created_until'] ?? null) {
                            $indicators[] = Tables\Filters\Indicator::make('结束时间: ' . \Carbon\Carbon::parse($data['created_until'])->format('Y-m-d'))
                                ->removeField('created_until');
                        }
                        return $indicators;
                    }),

                // 操作类型筛选
                Tables\Filters\SelectFilter::make('description')
                    ->label('操作类型')
                    ->options([
                        'created' => '创建',
                        'updated' => '更新',
                        'deleted' => '删除',
                    ])
                    ->placeholder('全部类型'),

                // 用户筛选
                Tables\Filters\SelectFilter::make('causer_id')
                    ->label('操作用户')
                    ->options(function () {
                        return \App\Models\User::pluck('name', 'id')->toArray();
                    })
                    ->searchable()
                    ->placeholder('全部用户'),

                // 对象类型筛选
                Tables\Filters\SelectFilter::make('subject_type')
                    ->label('对象类型')
                    ->options([
                        'App\\Models\\SystemSetting' => '系统设置',
                        'App\\Models\\User' => '用户',
                        'App\\Models\\Document' => '文档',
                        'App\\Models\\Group' => '分组',
                        'App\\Models\\Terminal' => '终端',
                        'App\\Models\\SopTemplate' => 'SOP模板',
                    ])
                    ->placeholder('全部类型'),
            ])
            ->actions([
                Tables\Actions\ViewAction::make()
                    ->label('查看'),
            ])
            ->bulkActions([
                // 不允许批量操作
            ])
            ->headerActions([
                // 导出操作
                Tables\Actions\Action::make('export')
                    ->label('导出日志')
                    ->icon('heroicon-o-arrow-down-tray')
                    ->form([
                        \Filament\Forms\Components\Select::make('format')
                            ->label('导出格式')
                            ->options([
                                'xlsx' => 'Excel (XLSX)',
                                'csv' => 'CSV',
                            ])
                            ->default('xlsx')
                            ->required(),
                    ])
                    ->action(function (array $data) {
                        // 获取基础查询（不包含筛选）
                        $query = Activity::query();
                        
                        // 导出文件名
                        $filename = '操作日志_' . now()->format('YmdHis');
                        
                        // 根据格式导出
                        if ($data['format'] === 'csv') {
                            return Excel::download(
                                new ActivityLogExport($query),
                                $filename . '.csv',
                                \Maatwebsite\Excel\Excel::CSV
                            );
                        }
                        
                        return Excel::download(
                            new ActivityLogExport($query),
                            $filename . '.xlsx'
                        );
                    })
                    ->color('success')
                    ->requiresConfirmation()
                    ->modalHeading('导出操作日志')
                    ->modalDescription('将导出所有日志数据')
                    ->modalSubmitActionLabel('确认导出'),
            ]);
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListActivityLogs::route('/'),
            'view' => Pages\ViewActivityLog::route('/{record}'),
        ];
    }
}