import { db } from '$lib/server/dbService';

export const getUsers = (): { userId: string; userName: string }[] => {
	const getUsersSQLStmt = `SELECT id, name
													 FROM users;`;
	const statement = db.prepare(getUsersSQLStmt);
	const result = statement.all() as { id: string; name: string }[];
	const userList: { userId: string; userName: string }[] = [];

	for (const resultItem of result) {
		const user = { userId: resultItem.id, userName: resultItem.name };
		userList.push(user);
	}

	return userList;
};

export const addUser = (userName: string, userPassword: string) => {
	const addUserSQLStmt = `INSERT into users(name, pw)
													values (?, ?)`;
	const statement = db.prepare(addUserSQLStmt);

	let rowInfo;
	try {
		rowInfo = statement.run(userName, userPassword);
		return rowInfo;
	} catch (error) {
		console.error('ERROR: ', error);
	}
};

export const deleteUser = (userId: string) => {
	// make sure to not delete the last entry
	const deleteUserSQLStmt = `DELETE
														 FROM users
														 WHERE id = ?
															 AND (SELECT COUNT(*) FROM users) > 1;`;

	const statement = db.prepare(deleteUserSQLStmt);

	let rowCount;
	try {
		const info = statement.run(userId);
		rowCount = info.changes;
	} catch (error) {
		console.log(error);
		rowCount = 0;
	}

	return rowCount;
};