#! /usr/bin/env node

/**
 * UglifyCSS
 * Port of YUI CSS Compressor to NodeJS
 * Author: Franck Marcia - https://github.com/fmarcia
 * MIT licenced
 */

/**
 * cssmin.js
 * Author: Stoyan Stefanov - http://phpied.com/
 * This is a JavaScript port of the CSS minification tool
 * distributed with YUICompressor, itself a port
 * of the cssmin utility by Isaac Schlueter - http://foohack.com/
 * Permission is hereby granted to use the JavaScript version under the same
 * conditions as the YUICompressor (original YUICompressor note below).
 */

/**
 * YUI Compressor
 * http://developer.yahoo.com/yui/compressor/
 * Author: Julien Lecomte - http://www.julienlecomte.net/
 * Copyright (c) 2011 Yahoo! Inc. All rights reserved.
 * The copyrights embodied in the content of this file are licensed
 * by Yahoo! Inc. under the BSD (revised) open source license.
 */

var uglifycss = require("./");

// Print usage
function usage() {
    console.log(
        "Usage: uglifycss [options] file1.css [file2.css [...]] > output\n" +
        "options:\n" +
        "--max-line-len x  add a newline every x characters\n" +
        "--expand-vars     expand variables\n" +
        "--ugly-comments   remove newlines within preserved comments\n" +
        "--cute-comments   preserve newlines within and around preserved comments\n" +
        "--convert-urls d  convert relative urls with the d directory as css location\n" +
        "--debug           print full error stack on error"
    );
}

// Transform strings like "the-parameter" to "theParameter"
function par2var(param) {
    return param.replace(/-(.)/g, function (ignore, character) {
        return character === "-" ? "" : character.toUpperCase();
    });
}

// Parse parameters from command line
function parseArguments(argv) {

    var params = {
        options: uglifycss.defaultOptions,
        files: []
    };
    var len = argv.length;

    for (var i = 2; i < len; i += 1) {

        // get "propertyName" from "--argument-name"
        var v = par2var(argv[i]);

        // boolean parameters
        if (typeof params.options[v] === "boolean") {
            params.options[v] = true;

        // string parameter
        } else if (typeof params.options[v] === "string") {
            params.options[v] = argv[i + 1] || "";
            i += 1;

        // integer parameter
        } else if (typeof params.options[v] !== "undefined") {
            params.options[v] = parseInt(argv[i + 1], 10);
            i += 1;

        // file
        } else {
            params.files.push(argv[i]);
        }
    }

    return params;
}

// Entry
(function main() {

    var params = parseArguments(process.argv);
    var nFiles = params.files.length;
    var stdin = process.stdin;
    var content = "";

    // . files
    if (nFiles) {
        console.log(uglifycss.processFiles(params.files, params.options));

    // . usage
    } else if (stdin.isTTY) {
        usage();

    // . stdin
    } else {

        stdin.on("data", function (part) {
            content += part;
        });

        stdin.on("end", function () {
            console.log(uglifycss.processString(content, params.options));
        });
    }

}());