import { fail } from '@sveltejs/kit';
import { BUCKET, client, CONFIGFILENAME, TOKENFILENAME } from '$lib/minio';
import { checkIfExactDirectoryExists, getContentofTextObject } from './s3ClientService';

/**
 * Get Vorgang and corresponend list of tatorte
 * @param caseId
 * @returns
 */
export const getVorgangByCaseId = async (caseId: string) => {
	const prefix = `${caseId}/`;

	const stream = client.listObjectsV2(BUCKET, prefix, false, '');

	const list = [];
	for await (const chunk of stream) {
		const splittedNameParts = chunk.name.split('/');
		const prefix = splittedNameParts[0];
		const name = splittedNameParts[1];
		if (name === CONFIGFILENAME || name === TOKENFILENAME) continue;
		list.push({ ...chunk, name: name, prefix: prefix, show_button: true });
	}
	return list;
};

export const getListOfVorgänge = async () => {
	const stream = client.listObjectsV2(BUCKET, '', false, '');
	
	const list = [];
	for await (const chunk of stream) {
		const objPath = `${chunk.prefix}${TOKENFILENAME}`;

		const token = await getContentofTextObject(BUCKET, objPath);

		const cleanedChunkPrefix = chunk.prefix.replace(/\/$/, '');
		list.push({ name: cleanedChunkPrefix, token: token });
	}
	return list;
};

/**
 * Checks if Vorgang exists
 * @param request
 * @returns fail or true
 */
export const checkIfVorgangExists = async (caseId: string) => {
	if (!caseId) {
		return fail(400, {
			success: false,
			caseId,
			error: { message: 'Die Vorgangsnummer darf nicht leer sein.' }
		});
	}

	if (typeof caseId === 'string' && !(await checkIfExactDirectoryExists(caseId))) {
		return fail(400, {
			success: false,
			caseId,
			error: { message: 'Die Vorgangsnummer existiert in dieser Anwendung nicht.' }
		});
	}

	return true;
};

export const hasValidToken = async (caseId: string, caseToken: string) => {
	const objPath = `${caseId}/${TOKENFILENAME}`;

	try {
		if (!caseToken) {
			return fail(400, {
				success: false,
				caseId,
				error: { message: 'Bitte Zugangscode eingeben!' }
			});
		}

		const token = await getContentofTextObject(BUCKET, objPath);

		if (!token || token !== caseToken) {
			return fail(400, {
				success: false,
				caseId,
				error: { message: 'Der Token ist ungültig.' }
			});
		}

		return true;
	} catch (error) {
		if (error.name == 'S3Error') {
			console.log(error);
			return false;
		}
	}
};