<?php

namespace App\Jobs;

use App\Models\Recording;
use App\Services\TranscriptionService;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Queue\Queueable;
use Illuminate\Support\Facades\Log;
use Throwable;

class TranscribeRecording implements ShouldQueue
{
    use Queueable;

    /**
     * The number of times the job may be attempted.
     */
    public int $tries = 1;

    /**
     * The number of seconds the job can run before timing out.
     */
    public int $timeout;

    /**
     * ISO-8601 transcription_started_at this job owns (ignored after cancel/restart).
     */
    public ?string $runStartedAt = null;

    /**
     * Create a new job instance.
     */
    public function __construct(public Recording $recording)
    {
        $this->timeout = max(60, (int) config('ai.transcription_timeout', 600));
        $this->runStartedAt = $recording->transcription_started_at?->toIso8601String();
    }

    /**
     * Execute the job.
     */
    public function handle(TranscriptionService $transcription): void
    {
        $recording = Recording::query()->find($this->recording->id);

        if ($recording === null) {
            return;
        }

        $this->recording = $recording;

        if ($this->runStartedAt !== null && ! $this->recording->ownsTranscriptionRun($this->runStartedAt)) {
            return;
        }

        if ($this->runStartedAt === null && ! $this->recording->isTranscribing()) {
            return;
        }

        $this->recording->forceFill([
            'transcription_status' => 'processing',
            'transcription_started_at' => $this->recording->transcription_started_at ?? now(),
            'transcription_error' => null,
        ])->save();

        $this->runStartedAt ??= $this->recording->transcription_started_at?->toIso8601String();

        $this->reportIfOwned('Preparing audio file…', 15);

        try {
            $text = $transcription->transcribe(
                $this->recording,
                function (string $message, int $percent): void {
                    $this->reportIfOwned($message, $percent);
                },
            );

            if (! $this->recording->ownsTranscriptionRun($this->runStartedAt)) {
                return;
            }

            $this->reportIfOwned('Saving transcript…', 90);

            if (! $this->recording->ownsTranscriptionRun($this->runStartedAt)) {
                return;
            }

            $this->recording->forceFill([
                'transcript' => $text,
                'transcription_status' => 'done',
                'transcription_progress' => 'Transcription complete',
                'transcription_percent' => 100,
                'transcription_error' => null,
                'transcribed_at' => now(),
            ])->save();
        } catch (Throwable $e) {
            if (! $this->recording->ownsTranscriptionRun($this->runStartedAt)) {
                return;
            }

            Log::error('Transcription failed', [
                'recording_id' => $this->recording->id,
                'driver' => $this->recording->transcription_driver,
                'message' => $e->getMessage(),
            ]);

            $this->recording->markTranscriptionFailed($e->getMessage());

            throw $e;
        }
    }

    /**
     * Handle a job failure (timeouts, worker kill, etc.).
     */
    public function failed(?Throwable $e): void
    {
        $recording = Recording::query()->find($this->recording->id);

        if ($recording === null || ! $recording->ownsTranscriptionRun($this->runStartedAt)) {
            return;
        }

        $recording->markTranscriptionFailed(
            $e?->getMessage() ?: 'Transcription stopped unexpectedly.',
        );
    }

    private function reportIfOwned(string $message, int $percent): void
    {
        if (! $this->recording->ownsTranscriptionRun($this->runStartedAt)) {
            return;
        }

        $this->recording->reportProgress($message, $percent);
    }
}