const credentials = (function() { "use strict";

const LOCALSTORAGE_KEY_SERVER = "mattermostServer";
const RE_SERVER_ITEM = new RegExp(`^${LOCALSTORAGE_KEY_SERVER}_(.*)\$`, "");

function key_for(endpoint) {
	return `${LOCALSTORAGE_KEY_SERVER}_${endpoint}`;
};

return {
	getServers() {
		let servers = [];
		for (var i = 0; i < window.localStorage.length; i++) {
			const key = window.localStorage.key(i);
			const matches = key.match(RE_SERVER_ITEM);
			if (matches) {
				const endpoint = matches[1];
				console.debug(`Found logged in endpoint ${endpoint}`);
				let stored = JSON.parse(window.localStorage.getItem(key_for(endpoint)));
				servers.push({...stored, endpoint});
			}
		}
		return servers;
	},

	clear(endpoint) {
		window.localStorage.removeItem(key_for(endpoint));
	},

	store(endpoint, login_id, token) {
		window.localStorage.setItem(key_for(endpoint), JSON.stringify({login_id, token}));
	},

	get(endpoint) {
		return JSON.parse(window.localStorage.getItem(key_for(endpoint)) || "null");
	}
};

})();