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Copy path4-js-way.js
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95 lines (76 loc) · 1.9 KB
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'use strict';
// Auth service
// can be placed in a separate file and imported here
const auth = (() => {
const users = new Map();
const createUser = (login, password, group) => {
users.set(login, { login, password, group });
};
const checkUserPassword = (login, password) => {
const account = users.get(login);
if (!account) return false;
return account.password === password;
};
const getUserGroup = (login) => {
const account = users.get(login);
if (!account) return null;
return account.group;
};
return { createUser, checkUserPassword, getUserGroup };
})();
// Logger service
// can be placed in a separate file and imported here
class Logger {
static #COLORS = {
warn: '\x1b[1;33m',
error: '\x1b[0;31m',
info: '\x1b[1;37m',
};
static color(level) {
return Logger.#COLORS[level] || Logger.#COLORS.info;
}
constructor() {
this.log = (level, s) => {
const date = new Date().toISOString();
const color = Logger.color(level);
console.log(`${color}${date}\t${s}\x1b[0m`);
};
}
warn(s) {
this.log('warn', s);
}
error(s) {
this.log('error', s);
}
info(s) {
this.log('info', s);
}
}
// Mediator
class Security {
constructor(auth, logger) {
this.auth = auth;
this.logger = logger;
}
check(login, password) {
if (!login || !password) {
this.logger.error('No login or password passed to auth');
return false;
}
const valid = this.auth.checkUserPassword(login, password);
if (!valid) {
this.logger.warn(`Password is not valid for ${login}`);
return false;
}
this.logger.info(`User ${login} logged in`);
return true;
}
}
// Usage
auth.createUser('marcus', '12345', 'emperors');
const logger = new Logger();
const sec = new Security(auth, logger);
console.dir(sec);
sec.check('marcus');
sec.check('marcus', 'qwerty');
sec.check('marcus', '12345');