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import chalk from 'chalk'; | |
const logLevelName = process.env.LOG_LEVEL; | |
const isProd = process.env.NODE_ENV === 'production'; | |
const isServer = typeof window === 'undefined'; | |
const INFO = 20; | |
const WARN = 30; | |
const ERROR = 40; | |
const logLevels = { | |
info: INFO, | |
warn: WARN, | |
error: ERROR | |
}; | |
const logLevel = logLevels[logLevelName]; | |
if (!isServer) { | |
window.MAH_LOGS = []; | |
} | |
function writeToLogFile(levelName, args) { | |
const fs = require('fs'); | |
const path = require('path'); | |
const logFilePath = path.resolve(__dirname, '../../logs/log.log'); | |
fs.writeFile(logFilePath, levelName + ':' + args); | |
} | |
export default class Logger { | |
constructor(namespace = '') { | |
this.namespace = namespace; | |
} | |
getPrefix(level, withDate) { | |
let result = ''; | |
if (withDate) result += new Date().toISOString(); | |
if (level) result += ` ${level.toUpperCase()} `; | |
result += this.namespace; | |
result += ` >`; | |
return result; | |
} | |
logOnClient(method = 'log', ...args) { | |
if (isProd) { | |
window.MAH_LOGS.push({ | |
level: method, | |
namespace: this.namespace, | |
args: args | |
}); | |
} else { | |
console[method](this.getPrefix(null, false), ...args); | |
} | |
} | |
logOnServer(method, ...args) { | |
const colors = { | |
info: 'gray', | |
warn: 'yellow', | |
error: 'red' | |
}; | |
const color = colors[method] || 'gray'; | |
const prefix = chalk[color](this.getPrefix(method, true)); | |
console[method](prefix, ...args); | |
writeToLogFile(method, args); | |
} | |
info(...args) { | |
if (logLevel <= INFO) { | |
if (isServer) { | |
this.logOnServer('info', ...args); | |
} else { | |
this.logOnClient('info', ...args); | |
} | |
} | |
} | |
warn(...args) { | |
if (logLevel <= WARN) { | |
if (isServer) { | |
this.logOnServer('warn', ...args); | |
} else { | |
this.logOnClient('warn', ...args); | |
} | |
} | |
} | |
error(...args) { | |
if (logLevel <= ERROR) { | |
if (isServer) { | |
this.logOnServer('error', ...args); | |
} else { | |
this.logOnClient('error', ...args); | |
} | |
} | |
} | |
} | |
export default function(namespace) { | |
return new Logger(namespace); | |
} |
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