var environment = require(“./environment”),

FileManager = require("./file-manager"),
UrlFileManager = require("./url-file-manager"),
createFromEnvironment = require("../less"),
less = createFromEnvironment(environment, [new FileManager(), new UrlFileManager()]),
lesscHelper = require('./lessc-helper');

// allow people to create less with their own environment less.createFromEnvironment = createFromEnvironment; less.lesscHelper = lesscHelper; less.PluginLoader = require(“./plugin-loader”); less.fs = require(“./fs”); less.FileManager = FileManager; less.UrlFileManager = UrlFileManager; less.formatError = function(ctx, options) {

options = options || {};

var message = "";
var extract = ctx.extract;
var error = [];
var stylize = options.color ? lesscHelper.stylize : function (str) { return str; };

// only output a stack if it isn't a less error
if (ctx.stack && !ctx.type) { return stylize(ctx.stack, 'red'); }

if (!ctx.hasOwnProperty('index') || !extract) {
    return ctx.stack || ctx.message;
}

if (typeof extract[0] === 'string') {
    error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
}

if (typeof extract[1] === 'string') {
    var errorTxt = ctx.line + ' ';
    if (extract[1]) {
        errorTxt += extract[1].slice(0, ctx.column) +
                        stylize(stylize(stylize(extract[1].substr(ctx.column, 1), 'bold') +
                        extract[1].slice(ctx.column + 1), 'red'), 'inverse');
    }
    error.push(errorTxt);
}

if (typeof extract[2] === 'string') {
    error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
}
error = error.join('\n') + stylize('', 'reset') + '\n';

message += stylize(ctx.type + 'Error: ' + ctx.message, 'red');
if (ctx.filename) {
    message += stylize(' in ', 'red') + ctx.filename +
        stylize(' on line ' + ctx.line + ', column ' + (ctx.column + 1) + ':', 'grey');
}

message += '\n' + error;

if (ctx.callLine) {
    message += stylize('from ', 'red') + (ctx.filename || '') + '/n';
    message += stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract + '/n';
}

return message;

};

less.writeError = function (ctx, options) {

options = options || {};
if (options.silent) { return; }
console.error(less.formatError(ctx, options));

};

// provide image-size functionality require('./image-size')(less.environment);

module.exports = less;