import { json, error } from '@sveltejs/kit';
import { getJob, updateJob, setJobStatus } from '$lib/server/db.js';
import { deduplicateSegments } from '$lib/server/postprocess.js';
import { writeOutputs } from '$lib/server/formatter.js';
import { sendNotification } from '$lib/server/push.js';
import { cleanupJobTmp } from '$lib/server/downloader.js';
import { emitProgress } from '$lib/server/pipeline.js';
import type { Segment, WhisperJob } from '$lib/types.js';

export async function POST({ params, request }) {
const jobId = params.jobId;
const job = getJob(jobId);
if (!job) throw error(404, 'Job not found');

// Discard the result if the job was cancelled locally while whisper was running
if (job.status === 'cancelled') {
return json({ ok: true });
}

const whisperJob = (await request.json()) as WhisperJob;

if (whisperJob.status === 'failed' || whisperJob.status === 'cancelled') {
const msg = whisperJob.error ?? `Whisper job ${whisperJob.status}`;
updateJob({ id: jobId, status: 'failed', error: msg });
emitProgress(jobId, { type: 'error', message: msg });
return json({ ok: true });
}

try {
setJobStatus(jobId, 'processing', 90);
emitProgress(jobId, { type: 'status', status: 'processing', progress: 90 });

const rawSegments = whisperJob.segments as Segment[];
const segments = deduplicateSegments(rawSegments);

const paths = await writeOutputs(segments, job.title, jobId);
const outputDir = paths.srt.replace(/\/[^/]+$/, '');

updateJob({
id: jobId,
status: 'done',
progress: 100,
segmentsJson: JSON.stringify(segments),
outputDir
});

emitProgress(jobId, { type: 'done', status: 'done' });

await sendNotification(jobId, '✅ Transcript ready', job.title);
await cleanupJobTmp(jobId);

return json({ ok: true });
} catch (err: unknown) {
const message = err instanceof Error ? err.message : String(err);
updateJob({ id: jobId, status: 'failed', error: message });
emitProgress(jobId, { type: 'error', message });
return json({ ok: false, error: message }, { status: 500 });
}
}