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'use strict';
const Utilities = require('../utilities');
/**
* Simple formatter. Outputs a predefined format:
* `[{{_timestamp}}][{{_levelString}}] {{_from}}: {{message}}`;
*
* @memberof Formatters
* @implements IFormatter
* @class Simple
*/
module.exports = class SimpleFormatter {
constructor(config) {
/**
* Flag that tells us whether or not to use ANSI color. Defaults to
* false.
*
* @name colorize
* @instance
* @memberof Formatters.Simple
* @type Boolean
* @default false
*/
this.colorize = false;
Object.assign(this, config || {});
}
/**
* Main entry point, it will read the incoming log object and convert
* it to the output string.
*
* @function format
* @instance
* @memberof Formatters.Simple
* @param {tCologneLog} logObjet the log to format
* @return {String} the formatted object
*/
format(logObject) {
const date = (new Date(Number(logObject._timestamp) / 1000000)).toISOString();
const levelString = this._colorize(logObject._levelString, logObject._level);
return `[${date}][${levelString}] ${logObject._from}: ${logObject.message}`;
}
_colorize(levelString, level) {
if (!this.colorize) {
return levelString;
}
const escapeCode = String.fromCharCode(27);
const color = escapeCode + Utilities.getAnsiCode(Utilities.getLevelAnsi(level));
const reset = escapeCode + Utilities.getAnsiCode('reset');
return color + levelString + reset;
}
};
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