<?php

namespace App\Filament\Resources\DocumentResource\Pages;

use App\Filament\Resources\DocumentResource;
use App\Services\DocumentPreviewService;
use App\Services\DocumentService;
use Filament\Actions;
use Filament\Infolists\Components\Section;
use Filament\Infolists\Components\TextEntry;
use Filament\Infolists\Components\ViewEntry;
use Filament\Infolists\Infolist;
use Filament\Notifications\Notification;
use Filament\Resources\Pages\ViewRecord;

class ViewDocument extends ViewRecord
{
    protected static string $resource = DocumentResource::class;

    protected function getHeaderActions(): array
    {
        return [
            Actions\Action::make('retry_conversion')
                ->label('重试转换')
                ->icon('heroicon-o-arrow-path')
                ->color('warning')
                ->visible(fn (): bool => $this->record->conversion_status === 'failed')
                ->requiresConfirmation()
                ->modalHeading('重试文档转换')
                ->modalDescription(fn (): string => 
                    '确定要重新转换文档 "' . $this->record->title . '" 吗？' . 
                    ($this->record->conversion_error ? "\n\n上次失败原因：" . $this->record->conversion_error : '')
                )
                ->modalSubmitActionLabel('确认重试')
                ->action(function () {
                    try {
                        app(\App\Services\DocumentConversionService::class)
                            ->queueConversion($this->record);

                        Notification::make()
                            ->success()
                            ->title('重试成功')
                            ->body('文档转换任务已重新加入队列，请稍后查看转换结果。')
                            ->send();

                        $this->refreshFormData([
                            'conversion_status',
                            'conversion_error',
                        ]);
                    } catch (\Exception $e) {
                        Notification::make()
                            ->danger()
                            ->title('重试失败')
                            ->body('无法重新派发转换任务：' . $e->getMessage())
                            ->send();
                    }
                }),
            Actions\Action::make('preview')
                ->label('预览 Markdown')
                ->icon('heroicon-o-eye')
                ->color('info')
                ->visible(fn (): bool => $this->record->conversion_status === 'completed')
                ->url(fn (): string => route('documents.preview', $this->record))
                ->openUrlInNewTab()
                ->tooltip(fn (): ?string => 
                    $this->record->conversion_status !== 'completed' 
                        ? '文档尚未完成转换' 
                        : null
                ),
            Actions\Action::make('download')
                ->label('下载文档')
                ->icon('heroicon-o-arrow-down-tray')
                ->color('success')
                ->action(function () {
                    $documentService = app(DocumentService::class);
                    $user = auth()->user();
                    
                    try {
                        // 记录下载日志
                        $documentService->logDownload($this->record, $user);
                        
                        // 返回文件下载响应
                        return $documentService->downloadDocument($this->record, $user);
                    } catch (\Exception $e) {
                        Notification::make()
                            ->danger()
                            ->title('下载失败')
                            ->body($e->getMessage())
                            ->send();
                        
                        return null;
                    }
                }),
            Actions\EditAction::make()
                ->label('编辑'),
            Actions\DeleteAction::make()
                ->label('删除'),
        ];
    }

    public function infolist(Infolist $infolist): Infolist
    {
        return $infolist
            ->schema([
                Section::make('文档信息')
                    ->schema([
                        TextEntry::make('title')
                            ->label('文档标题')
                            ->size(TextEntry\TextEntrySize::Large)
                            ->weight('bold'),
                        
                        TextEntry::make('description')
                            ->label('文档描述')
                            ->placeholder('无描述')
                            ->columnSpanFull(),
                        
                        TextEntry::make('knowledgeBase.name')
                            ->label('所属知识库'),

                        TextEntry::make('uploader.name')
                            ->label('上传者'),
                        
                        TextEntry::make('display_file_name')
                            ->label('文件名'),
                        
                        TextEntry::make('file_size')
                            ->label('文件大小')
                            ->formatStateUsing(fn ($state): string => DocumentResource::formatFileSize($state)),
                        
                        TextEntry::make('conversion_status')
                            ->label('转换状态')
                            ->badge()
                            ->color(fn (?string $state): string => match ($state) {
                                'completed' => 'success',
                                'processing' => 'info',
                                'pending' => 'warning',
                                'failed' => 'danger',
                                default => 'gray',
                            })
                            ->formatStateUsing(fn (?string $state): string => match ($state) {
                                'completed' => '已完成',
                                'processing' => '转换中',
                                'pending' => '等待转换',
                                'failed' => '转换失败',
                                default => '未知',
                            }),
                        
                        TextEntry::make('created_at')
                            ->label('上传时间')
                            ->dateTime('Y年m月d日 H:i:s'),
                        
                        TextEntry::make('updated_at')
                            ->label('更新时间')
                            ->dateTime('Y年m月d日 H:i:s'),
                    ])
                    ->columns(2),
                
                Section::make('转换错误信息')
                    ->schema([
                        ViewEntry::make('conversion_error')
                            ->label('')
                            ->view('filament.resources.document.conversion-error-detail')
                            ->viewData([
                                'document' => $this->record,
                            ]),
                    ])
                    ->visible(fn ($record) => $record->conversion_status === 'failed' && !empty($record->conversion_error))
                    ->collapsible()
                    ->collapsed(false),
                
                Section::make('文档预览')
                    ->schema([
                        ViewEntry::make('preview')
                            ->label('')
                            ->view('filament.resources.document.preview')
                            ->viewData([
                                'document' => $this->record,
                            ]),
                    ])
                    ->collapsible()
                    ->collapsed(false),
            ]);
    }
}