<?php

namespace App\Jobs;

use App\Services\Analytics\QuestionDifficultyCalibrationService;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;
use Throwable;

class ProcessQuestionDifficultyCalibrationJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public int $tries = 1;
    public int $timeout = 300;

    /**
     * @param  list<array<string,mixed>>  $questions
     */
    public function __construct(
        public string $paperId,
        public string $studentId,
        public array $questions
    ) {
        $this->questions = $this->compactQuestions($questions);

        // Online difficulty calibration is not on the user-visible critical
        // path. Keep it away from PDF workers so it cannot race report output.
        $this->onQueue((string) config('queue.workloads.question_difficulty_calibration', 'default'));
        $this->afterCommit();
    }

    public function handle(QuestionDifficultyCalibrationService $calibrationService): void
    {
        Log::warning('QuestionDifficultyCalibrationJob: 开始异步在线难度校准', [
            'paper_id' => $this->paperId,
            'student_id' => $this->studentId,
            'question_count' => count($this->questions),
            'attempt' => $this->attempts(),
            'memory_mb' => round(memory_get_usage(true) / 1024 / 1024, 2),
        ]);

        $updatedQuestions = $calibrationService->updateOnlineFromPaper($this->paperId, $this->questions);

        Log::warning('QuestionDifficultyCalibrationJob: 异步在线难度校准完成', [
            'paper_id' => $this->paperId,
            'student_id' => $this->studentId,
            'updated_questions' => $updatedQuestions,
            'memory_peak_mb' => round(memory_get_peak_usage(true) / 1024 / 1024, 2),
        ]);
    }

    public function failed(Throwable $exception): void
    {
        Log::error('QuestionDifficultyCalibrationJob: 异步在线难度校准最终失败', [
            'paper_id' => $this->paperId,
            'student_id' => $this->studentId,
            'question_count' => count($this->questions),
            'error' => $exception->getMessage(),
            'exception' => get_class($exception),
            'memory_peak_mb' => round(memory_get_peak_usage(true) / 1024 / 1024, 2),
        ]);
    }

    /**
     * @param  list<array<string,mixed>>  $questions
     * @return list<array<string,mixed>>
     */
    private function compactQuestions(array $questions): array
    {
        $compact = [];
        foreach ($questions as $question) {
            if (! is_array($question)) {
                continue;
            }

            $questionId = $question['question_id'] ?? $question['question_bank_id'] ?? null;
            if ($questionId === null || $questionId === '') {
                continue;
            }

            $compact[] = [
                'question_id' => $questionId,
                'is_correct' => $question['is_correct'] ?? [],
            ];
        }

        return $compact;
    }
}