diaspora-orm/diaspora

import { Logger, ELoggingLevel } from './logger';

export class BrowserLogger extends Logger {
    public set level( level: ELoggingLevel ) {
        this._level = level;
    }
    public get level() {
        return this._level;
    }
    public constructor() {
        const voidFct = () => {
            return;
        };
        super( {
            silly: voidFct,
            verbose: voidFct,
            debug: voidFct,
            log: voidFct,
            warn: voidFct,
            error: voidFct,
        } );
        this.silly = this.bindConsoleFct(
            ELoggingLevel.Silly,
            'info',
            'Diaspora: silly  '
        );
        this.verbose = this.bindConsoleFct(
            ELoggingLevel.Verbose,
            'info',
            'Diaspora: verbose'
        );
        this.debug = this.bindConsoleFct(
            ELoggingLevel.Debug,
            'info',
            'Diaspora: debug  '
        );
        this.log = this.bindConsoleFct(
            ELoggingLevel.Log,
            'log',
            'Diaspora: log    '
        );
        this.warn = this.bindConsoleFct(
            ELoggingLevel.Warn,
            'warn',
            'Diaspora: warn   '
        );
        this.error = this.bindConsoleFct(
            ELoggingLevel.Error,
            'error',
            'Diaspora: error  '
        );
    }
    
    /**
     * Prepare a log function with a specific log level
     *
     * @author Gerkin
     * @param minLevel - Logging level of this function, under which no log will be emitted
     * @param fctName  - Name of the console function to target
     * @param args     - Parameters to prepend to the log
     * @returns A logging function to call with any parameters
     */
    private bindConsoleFct(
        minLevel: ELoggingLevel,
        fctName: string,
        ...args: any[]
    ) {
        return ( ...logArgs: any[] ) => {
            if ( this.level <= minLevel ) {
                ( console as any )[fctName]( ...args, ...logArgs );
            }
        };
    }
}