const _ = require("lodash")
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const dayjs = require("dayjs")
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const colors = require("colors/safe")
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const fs = require("node:fs/promises")
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/////////////////////////////////////////////////////////////////////////
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const LEVELS = {debug: 10, info: 20, warn: 30, error: 40}
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const DEFAULT_LEVEL = "info"
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// level configured from settings (see settings.js); env LOG_LEVEL overrides it
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let settingsLevel = null
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module.exports = {
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debug: msg => log("DEBUG", msg),
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info: msg => log("INFO", msg),
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warn: msg => log("WARN", msg),
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error: msg => log("ERROR", msg),
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setLevel,
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level: currentLevel,
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}
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/////////////////////////////////////////////////////////////////////////
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/**
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* Set the level from settings. The LOG_LEVEL env var still takes precedence.
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*/
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function setLevel (level) {
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settingsLevel = level ? level.toString().trim().toLowerCase() : null
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}
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/**
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* Resolve the active log level: LOG_LEVEL env var > settings level > "info".
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*/
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function currentLevel () {
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const level = process.env.LOG_LEVEL || settingsLevel || DEFAULT_LEVEL
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return level.toString().trim().toLowerCase()
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}
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function log (level, msg) {
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const threshold = currentLevel()
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if (threshold === "silent" || threshold === "off") return
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if (LEVELS[level.toLowerCase()] < (LEVELS[threshold] ?? LEVELS[DEFAULT_LEVEL])) return
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if (!_.isString(msg)) {
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if (msg.message) {
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msg = msg.message
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}
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else {
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try {
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msg = JSON.stringify(msg)
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} catch (ex) {
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msg = msg?.toString()
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}
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}
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}
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level = _.padEnd(level, 5)
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level = format(level.toLowerCase())
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let message = `${level} ${dayjs().format("DD.MM.YYYY HH:mm:ss")} - ${msg}`
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console.log(message)
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return fs.appendFile("log.log", message + "\n")
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}
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function format (level) {
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switch (level.trim()) {
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case "info":
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return colors.green(level.toUpperCase())
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case "warn":
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return colors.blue(level.toUpperCase())
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case "error":
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return colors.red(level.toUpperCase())
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case "debug":
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return colors.grey(level.toUpperCase())
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}
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return level
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}
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