<?php

namespace App\Filament\Pages\TextbookImport;

use App\Services\Import\TextbookExcelImporter;
use App\Services\TextbookApiService;
use PhpOffice\PhpSpreadsheet\IOFactory;
use Filament\Pages\Page;
use UnitEnum;
use BackedEnum;
use Filament\Actions\Action;
use Filament\Forms;
use Filament\Forms\Components\FileUpload;
use Filament\Notifications\Notification;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Log;
use Livewire\WithFileUploads;
use Livewire\Component;
use Livewire\Attributes\Validate;

class TextbookExcelImportPage extends Page
{
    use WithFileUploads;

    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-document-arrow-up';

    protected static ?string $navigationLabel = 'Excel导入';

    protected static UnitEnum|string|null $navigationGroup = '教材管理';

    protected static ?int $navigationSort = 4;

    public string $view = 'filament.pages.textbook-import';

    #[Validate('required|string')]
    public $selectedType = 'textbook_series';

    #[Validate('required|file|mimes:xlsx,xls|max:10240')]
    public $file;

    public $importResult = null;

    protected $importer;
    protected $apiService;

    public function boot()
    {
        $this->importer = app(TextbookExcelImporter::class);
        $this->apiService = app(TextbookApiService::class);
    }

    public function mount()
    {
        $this->importer = app(TextbookExcelImporter::class);
        $this->apiService = app(TextbookApiService::class);

        // 检查URL参数，设置默认导入类型
        $type = request()->get('type');
        if (in_array($type, ['textbook_series', 'textbook', 'textbook_catalog'])) {
            $this->selectedType = $type;
        }
    }

    public function getHeaderActions(): array
    {
        return [
            Action::make('downloadTemplate')
                ->label('下载模板')
                ->icon('heroicon-o-arrow-down-tray')
                ->color('primary')
                ->action('downloadTemplate'),

            Action::make('import')
                ->label('导入数据')
                ->icon('heroicon-o-cloud-arrow-up')
                ->color('success')
                ->action('importData')
                ->requiresConfirmation()
                ->modalHeading('确认导入')
                ->modalDescription('确定要导入Excel文件中的数据吗？此操作将同步到题库服务。')
                ->modalSubmitActionLabel('确认导入'),
        ];
    }

    public function downloadTemplate()
    {
        try {
            $importer = app(TextbookExcelImporter::class);

            if ($this->selectedType === 'textbook_series') {
                $filePath = $importer->generateTextbookSeriesTemplate();
                $fileName = '教材系列导入模板.xlsx';
            } elseif ($this->selectedType === 'textbook') {
                $filePath = $importer->generateTextbookTemplate();
                $fileName = '教材导入模板.xlsx';
            } else {
                $filePath = $importer->generateTextbookCatalogTemplate();
                $fileName = '教材目录导入模板.xlsx';
            }

            return response()->download($filePath, $fileName)->deleteFileAfterSend();
        } catch (\Exception $e) {
            Notification::make()
                ->title('模板生成失败')
                ->body($e->getMessage())
                ->danger()
                ->send();
        }
    }

    public function importData()
    {
        $this->validate();

        try {
            $importer = app(TextbookExcelImporter::class);

            // 保存上传的文件
            $path = $this->file->store('imports', 'local');

            // 获取完整文件路径
            $fullPath = storage_path('app/' . $path);

            // 执行导入
            if ($this->selectedType === 'textbook_series') {
                $result = $importer->importTextbookSeries($fullPath);
            } elseif ($this->selectedType === 'textbook') {
                $result = $importer->importTextbook($fullPath);
            } else {
                // 教材目录导入 - 需要从Excel中获取textbook_id
                $spreadsheet = IOFactory::load($fullPath);
                $sheet = $spreadsheet->getActiveSheet();
                $data = $sheet->toArray();

                // 获取第一行数据中的教材ID
                $firstRow = $data[1] ?? [];
                $textbookId = (int)($firstRow[0] ?? 0);

                if ($textbookId <= 0) {
                    throw new \Exception('Excel文件中未找到有效的教材ID，请确保第一列包含教材ID');
                }

                $result = $importer->importTextbookCatalog($fullPath, $textbookId);
            }

            // 删除临时文件
            Storage::disk('local')->delete($path);

            $this->importResult = $result;

            if ($result['success']) {
                $message = sprintf(
                    '导入完成！成功: %d 条，失败: %d 条',
                    $result['success_count'],
                    $result['error_count']
                );

                Notification::make()
                    ->title('导入成功')
                    ->body($message)
                    ->success()
                    ->send();
            } else {
                Notification::make()
                    ->title('导入失败')
                    ->body($result['message'])
                    ->danger()
                    ->send();
            }

        } catch (\Exception $e) {
            Notification::make()
                ->title('导入失败')
                ->body($e->getMessage())
                ->danger()
                ->send();

            Log::error('Excel导入失败', ['error' => $e->getMessage()]);
        }
    }
}