#!/usr/bin/env node

'use strict';

(function () {
    process.title = 'uncss';

    var uncss = require('../src/uncss.js'),
        data = require('../package.json'),
        program = require('commander');

    var buffer = '',
        options;

    function listArg(val) {
        return val.split(',');
    }

    program
        .version(data.version)
        .usage('[options] <file or URL, ...>\n\t e.g. uncss http://getbootstrap.com/examples/jumbotron/ > stylesheet.css')
        .option('-i, --ignore <selector, ...>', 'Do not remove given selectors', listArg)
        .option('-m, --media <media_query, ...>', 'Process additional media queries', listArg)
        .option('-C, --csspath <path>', 'Relative path where the CSS files are located')
        .option('-s, --stylesheets <file, ...>', 'Specify additional stylesheets to process', listArg)
        .option('-S, --ignoreSheets <selector, ...>', 'Do not include specified stylesheets', listArg)
        .option('-r, --raw <string>', 'Pass in a raw string of CSS')
        .option('-t, --timeout <milliseconds>', 'Wait for JS evaluation')
        .option('-H, --htmlroot <folder>', 'Absolute paths\' root location')
        .option('-u, --uncssrc <file>', 'Load these options from <file>')
        .parse(process.argv);

    options = {
        ignore: program.ignore,
        ignoreSheets: program.ignoreSheets,
        media: program.media,
        csspath: program.csspath,
        stylesheets: program.stylesheets,
        raw: program.raw,
        timeout: program.timeout,
        htmlroot: program.htmlroot,
        uncssrc: program.uncssrc
    };

    if (!program.args.length) {
        /* No files were specified, read HTML from stdin */
        process.stdin.resume();
        process.stdin.setEncoding('utf8');

        process.stdin.on('data', function (chunk) {
            buffer += chunk;
        });

        process.stdin.on('end', function () {
            uncss(buffer, options, function (err, css) {
                if (err) {
                    throw err;
                }
                console.log(css);
            });
        });
    } else {
        if (options.ignore) {
            options.ignore = options.ignore.map(function (ign) {
                /* Create RegExes */
                if (ign[0] === '/') {
                    /* Remove starting and trailing '/' */
                    return new RegExp(ign.slice(1, -1));
                }
                return ign;
            });
        }

        if (options.ignoreSheets) {
            options.ignoreSheets = options.ignoreSheets.map(function (ign) {
                /* Create RegExes */
                if (ign[0] === '/') {
                    /* Remove starting and trailing '/' */
                    return new RegExp(ign.slice(1, -1));
                }
                return ign;
            });
        }

        /* If used from the command line, concatenate the output */
        uncss(program.args, options, function (err, css) {
            if (err) {
                throw err;
            }
            console.log(css);
        });
    }

}());