#!/usr/bin/env phantomjs14

/*!
 * Casper is a navigation utility for PhantomJS.
 *
 * Documentation: http://n1k0.github.com/casperjs/
 * Repository:    http://github.com/n1k0/casperjs
 *
 * Copyright (c) 2011 Nicolas Perriault
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */
if (!phantom.casperLoaded) {
    // see http://semver.org/
    phantom.casperVersion = {
        major: 0,
        minor: 4,
        patch: 2,
        ident: 'experimental-require',
        toString: function() {
            var version = [this.major, this.minor, this.patch].join('.');
            if (this.ident) {
                version = [version, this.ident].join('-');
            }
            return version;
        }
    };

    // Patching fs
    // TODO: watch for these methods being implemented in official fs module
    var fs = (function(fs) {
        if (!fs.hasOwnProperty('basename')) {
            fs.basename = function(path) {
                return path.replace(/.*\//, '');
            };
        }
        if (!fs.hasOwnProperty('dirname')) {
            fs.dirname = function(path) {
                return path.replace(/\/[^\/]*\/?$/, '');
            };
        }
        if (!fs.hasOwnProperty('pathJoin')) {
            fs.pathJoin = function() {
                return Array.prototype.join.call(arguments, this.separator);
            };
        }
        return fs;
    })(require('fs'));

    // casper root path
    phantom.casperPath = fs.absolute(phantom.libraryScript);

    var sourceIds = {};

    // Patching require()
    // Inspired by phantomjs-nodify: https://github.com/jgonera/phantomjs-nodify/
    // TODO: remove when PhantomJS has full module support
    require = (function(require, requireDir) {
        var phantomBuiltins = ['fs', 'webpage', 'webserver'];
        var phantomRequire = phantom.__orig__require = require;
        var requireCache = {};
        return function(path) {
            var i, dir, paths = [],
                fileGuesses = [],
                file, code, fn,
                module = {
                    exports: {}
                };
            if (phantomBuiltins.indexOf(path) !== -1) {
                return phantomRequire(path);
            } else {
                if (path[0] === '.') {
                    paths.push(fs.absolute(fs.pathJoin(requireDir, path)));
                } else if (path[0] === '/') {
                    paths.push(path);
                } else {
                    dir = fs.absolute(requireDir);
                    while (dir !== '') {
                        // nodejs compatibility
                        paths.push(fs.pathJoin(dir, 'node_modules', path));
                        dir = fs.dirname(dir);
                    }
                    paths.push(fs.pathJoin(requireDir, 'modules', path));
                }
                paths.forEach(function(testPath) {
                    fileGuesses.push.apply(fileGuesses, [
                        testPath,
                        testPath + '.js',
                        testPath + '.coffee',
                        fs.pathJoin(testPath, 'index.js'),
                        fs.pathJoin(testPath, 'index.coffee'),
                        fs.pathJoin(testPath, 'lib', fs.basename(testPath) + '.js'),
                        fs.pathJoin(testPath, 'lib', fs.basename(testPath) + '.coffee')
                    ]);
                });
                file = null;
                for (i = 0; i < fileGuesses.length && !file; ++i) {
                    if (fs.isFile(fileGuesses[i])) {
                        file = fileGuesses[i];
                    }
                }
                if (!file) {
                    throw new Error("CasperJS couldn't find module " + path);
                }
                if (file in requireCache) {
                    return requireCache[file].exports;
                }
                code = fs.read(file);
                if (file.match(/\.js$/i)) {
                    try {
                        // TODO: esprima syntax check
                    } catch (e) {
                        e.fileName = file;
                        throw e;
                    }
                } else if (file.match(/\.coffee$/i)) {
                    try {
                        code = CoffeeScript.compile(code);
                    } catch (e) {
                        e.fileName = file;
                        throw e;
                    }
                }
                // a trick to associate Error's sourceId with file
                code += ";throw new Error('__sourceId__');";
                try {
                    fn = new Function('module', 'exports', code);
                    fn(module, module.exports);
                } catch (e) {
                    if (!sourceIds.hasOwnProperty(e.sourceId)) {
                        sourceIds[e.sourceId] = file;
                    }
                    if (e.message !== '__sourceId__') {
                        throw e;
                    }
                }
                requireCache[file] = module;
                return module.exports;
            }
        };
    })(require, phantom.casperPath);

    // Adding stack traces to Error
    // Inspired by phantomjs-nodify: https://github.com/jgonera/phantomjs-nodify/
    // TODO: remove when phantomjs has js engine upgrade
    if (!new Error().hasOwnProperty('stack')) {
        Object.defineProperty(Error.prototype, 'stack', {
            set: function(string) {
                this._stack = string;
            },
            get: function() {
                if (this._stack) {
                    return this._stack;
                } else if (this.fileName || this.sourceId) {
                    return this.toString() + '\nat ' + getErrorMessage(this);
                }
                return this.toString() + '\nat unknown';
            },
            configurable: true,
            enumerable: true
        });
    }

    // casper cli args
    phantom.casperArgs = require('cli').parse(phantom.args);

    // loaded status
    phantom.casperLoaded = true;

    if (!!phantom.casperArgs.options.version) {
        console.log(phantom.casperVersion.toString());
        phantom.exit(0);
    } else if (phantom.casperArgs.args.length === 0 || !!phantom.casperArgs.options.help) {
        console.log('CasperJS version ' + phantom.casperVersion.toString());
        console.log('Usage: casperjs script.(js|coffee) [options...]');
        console.log('Read the docs http://n1k0.github.com/casperjs/');
        phantom.exit(0);
    }

    phantom.casperScript = phantom.casperArgs.get(0);

    if (!fs.isFile(phantom.casperScript)) {
        console.log('Unable to open file: ' + phantom.casperScript);
        phantom.exit(1);
    }

    // filter out the called script name from casper args
    phantom.casperArgs.args = phantom.casperArgs.args.filter(function(arg) {
        return arg !== phantom.casperScript;
    });
}

// passed script execution
// TODO: proper syntax validation?
phantom.injectJs(phantom.casperScript);