src/lib/server/hf-bucket/public-error.ts

import type { PublicBucketError, PublicBucketErrorCode } from '$lib/types/bucket-state';
import { HfBucketError } from './client';

function codeFromError(error: unknown): PublicBucketErrorCode {
	if (error instanceof HfBucketError) {
		if (error.status === 401) return 'unauthorized';
		if (error.status === 403) return 'forbidden';
		if (error.status === 404) return 'not_found';

		const message = error.message.toLowerCase();
		if (message.includes('hf_token')) return 'missing_token';
		if (message.includes('timed out')) return 'timeout';
		if (message.includes('valid json')) return 'invalid_json';
		if (message.includes('hash')) return 'hash_mismatch';
		if (
			message.includes('validation') ||
			message.includes('schema') ||
			message.includes('duplicate') ||
			message.includes('unknown')
		) {
			return 'invalid_schema';
		}
	}

	return 'unknown';
}

export function toPublicBucketError(error: unknown): PublicBucketError {
	if (error instanceof HfBucketError) {
		return {
			code: codeFromError(error),
			message: error.message,
			status: error.status
		};
	}

	return {
		code: 'unknown',
		message: error instanceof Error ? error.message : 'Unknown bucket error.'
	};
}