q13x-eaglerproxy/logger.ts

import { Chalk } from "chalk"

const color = new Chalk({ level: 2 })

let global_verbose: boolean = false

type JsonLogType = "info" | "warn" | "error" | "fatal" | "debug"
type JsonOutput = {
    type: JsonLogType,
    message: string
}

export function verboseLogging(newVal?: boolean) {
    global_verbose = newVal ?? global_verbose ? false : true
}

function jsonLog(type: JsonLogType, message: string): string {
    return JSON.stringify({
        type: type,
        message: message
    }) + "\n"
}

export class Logger {
    loggerName: string
    verbose: boolean
    private jsonLog: boolean = process.argv.includes("--json") || process.argv.includes("-j")

    constructor(name: string, verbose?: boolean) {
        this.loggerName = name
        if (verbose) this.verbose = verbose
        else this.verbose = global_verbose
    }

    info(s: string) {
        if (!this.jsonLog) process.stdout.write(`${color.green("I")} ${color.gray(new Date().toISOString())} ${color.reset(`${color.yellow(`${this.loggerName}:`)} ${s}`)}\n`)
        else process.stdout.write(jsonLog("info", s))
    }

    warn(s: string) {
        if (!this.jsonLog) process.stdout.write(`${color.yellow("W")} ${color.gray(new Date().toISOString())} ${color.yellow(`${color.yellow(`${this.loggerName}:`)} ${s}`)}\n`)
        else process.stderr.write(jsonLog("warn", s))
    }

    error(s: string) {
        if (!this.jsonLog) process.stderr.write(`* ${color.red("E")} ${color.gray(new Date().toISOString())} ${color.redBright(`${color.red(`${this.loggerName}:`)} ${s}`)}\n`)
        else process.stderr.write(jsonLog("error", s))
    }

    fatal(s: string) {
        if (!this.jsonLog) process.stderr.write(`** ${color.red("F!")} ${color.gray(new Date().toISOString())} ${color.bgRedBright(color.redBright(`${color.red(`${this.loggerName}:`)} ${s}`))}\n`)
        else process.stderr.write(jsonLog("fatal", s))
    }

    debug(s: string) {
        if (this.verbose || global_verbose) {
            if (!this.jsonLog) process.stderr.write(`${color.gray("D")} ${color.gray(new Date().toISOString())} ${color.gray(`${color.gray(`${this.loggerName}:`)} ${s}`)}\n`)
            else process.stderr.write(jsonLog("debug", s))
        }
    }
}