<?php

namespace App\Livewire\UploadExam;

use Livewire\Component;
use Livewire\WithFileUploads;
use Livewire\Attributes\On;
use Filament\Notifications\Notification;
use App\Jobs\ProcessOCRRecord;
use Illuminate\Support\Facades\Storage;

class UploadForm extends Component
{
    use WithFileUploads;

    public ?string $teacherId = null;
    public ?string $studentId = null;
    public $uploadedImages = [];
    public bool $isUploading = false;
    public ?int $currentOcrRecordId = null;
    public ?string $ocrStatus = null;

    protected $listeners = [
        'uploadComplete' => 'handleUploadComplete',
    ];

    public function mount($teacherId = null, $studentId = null)
    {
        $this->teacherId = $teacherId;
        $this->studentId = $studentId;
    }

    public function handleSubmit()
    {
        // 验证图片
        if (empty($this->uploadedImages)) {
            Notification::make()
                ->title('请上传试卷图片')
                ->danger()
                ->send();
            return;
        }

        $this->isUploading = true;

        try {
            // 保存图片
            $savedImages = [];
            foreach ($this->uploadedImages as $image) {
                $path = $image->store('exam-papers', 'public');
                $savedImages[] = [
                    'path' => $path,
                    'original_name' => $image->getClientOriginalName(),
                    'size' => $image->getSize(),
                ];
            }

            // 创建 OCR 记录（使用正确的字段名）
            $ocrRecord = \App\Models\OCRRecord::create([
                'user_id' => $this->studentId,
                'paper_title' => '待OCR识别',
                'paper_type' => null, // OCR识别
                'file_path' => $savedImages[0]['path'], // 只存储第一张图片的路径
                'image_count' => count($savedImages),
                'status' => 'processing',
            ]);

            $this->currentOcrRecordId = $ocrRecord->id;
            $this->ocrStatus = 'processing';

            // 派发 OCR 处理任务
            ProcessOCRRecord::dispatch($ocrRecord->id);

            $this->dispatch('uploadComplete', [
                'ocrRecordId' => $ocrRecord->id,
                'success' => true,
                'message' => '图片上传成功，正在进行 OCR 识别...',
            ]);

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

            $this->dispatch('uploadComplete', [
                'success' => false,
                'message' => $e->getMessage(),
            ]);
        } finally {
            $this->isUploading = false;
        }
    }

    public function resetForm()
    {
        $this->uploadedImages = [];
        $this->currentOcrRecordId = null;
        $this->ocrStatus = null;
    }

    public function removeImage($index)
    {
        unset($this->uploadedImages[$index]);
        $this->uploadedImages = array_values($this->uploadedImages);
    }

    public function handleUploadComplete($data)
    {
        if ($data['success'] ?? false) {
            // 清空表单
            $this->resetForm();
        }
    }

    public function checkOcrStatus()
    {
        if (!$this->currentOcrRecordId) {
            return;
        }

        $ocrRecord = \App\Models\OCRRecord::find($this->currentOcrRecordId);

        if ($ocrRecord) {
            $this->ocrStatus = $ocrRecord->status;

            if ($ocrRecord->status === 'completed') {
                // OCR完成，跳转到详情页
                $url = '/admin/exam-analysis?recordId=' . $ocrRecord->id . '&studentId=' . $this->studentId;
                $this->redirect($url);
            } elseif ($ocrRecord->status === 'failed') {
                Notification::make()
                    ->title('OCR识别失败')
                    ->body($ocrRecord->error_message ?? '未知错误')
                    ->danger()
                    ->send();
                $this->currentOcrRecordId = null;
            }
        }
    }

    public function render()
    {
        return view('livewire.upload-exam.upload-form');
    }
}