// FIXME: use %PROGRAMFILES% to get at "c:\\Program\ Files"
// FIXME: put SAVE_DIR on the current user's desktop?
// FIXME: make it configurable via command-line options?
var BROWSERS = {
	'ff' : {
		'PATH' : "c:\\Program\ Files\\Mozilla\ Firefox\\",
		'SAVE_DIR' : ".\\firefox\\"
	},
	'ie' : {
		'PATH' : "",
		'SAVE_DIR' : ".\\internet-explorer\\"
	}
};



// the URL file is unnamed and required
if (WScript.Arguments.Unnamed.length < 1) {
	WScript.Echo("Error: must specifiy input file.");
	WScript.Quit();
}



var browsers_to_check = [];

// the browsers are named, and optional
// /b:ff,ie
if (WScript.Arguments.Named.length > 0) {
	var b_opt = WScript.Arguments.Named.Item("b");
	var req_browsers = b_opt.split(",");
	for (var i=0; i < req_browsers.length; i++) {
		if (typeof(BROWSERS[req_browsers[i]]) != 'undefined') {
			browsers_to_check.push(req_browsers[i]);
		}
	}
} else {
	// prime browsers_to_check w/ the available browsers
	for (var b in BROWSERS) {
		browsers_to_check.push(b);
	}
}

WScript.Echo("Browsers to check: " + browsers_to_check.join(","));



var url_list_filename = WScript.Arguments(0);

var ForReading = 1, ForWriting = 2, ForAppending = 8;
var TristateUseDefault = -2, TristateTrue = -1, TristateFalse = 0;

var fsobj = new ActiveXObject("Scripting.FileSystemObject");

// FIXME: check if input file exists!

var file = fsobj.GetFile(url_list_filename);
var textstream = file.OpenAsTextStream(ForReading, TristateUseDefault);


var save_dir;
for (var i=0; i < browsers_to_check.length; i++) {
	save_dir = BROWSERS[browsers_to_check[i]]['SAVE_DIR'];

	// FIXME: if the target folders exist, do we drop the files into the folder or bail?
	if (fsobj.FolderExists(save_dir)) {
		WScript.Echo("Warning: " + save_dir + " already exists.");
	} else {
		fsobj.CreateFolder(save_dir);
	}
}


function takeScreenshot(browser, url, filename) {
	var cmd = "";
	switch(browser) {
		case 'ff':
			cmd = BROWSERS[browser]['PATH'] + "firefox.exe -savepng " + url + " -saveas " + BROWSERS[browser]['SAVE_DIR'] + filename;
			break;
		case 'ie':
			cmd = BROWSERS[browser]['PATH'] + "IECapt.exe --url=" + url + " --out=" + BROWSERS[browser]['SAVE_DIR'] + filename;
			break;
	}

	WScript.Echo(" > " + browser);
	var shell = new ActiveXObject("WScript.Shell");
	exec = shell.Exec(cmd);
	// hmph. so it looks like WshShell.Exec is asynchronous
	while (exec.Status == 0) {
		 WScript.Sleep(100);
	}
}


var status, url, path, file, screenshot_file, exec;

while (!textstream.AtEndOfStream) {
	url = textstream.ReadLine();

	// FIXME: validate URL before attempting to use it
	// FIXME: handle URLs that have 1) no filenames 2) query strings, 3) etc.
	path = url.split("/");
	file = path[path.length-1];
	screenshot_file = file + ".png";

	WScript.Echo(url + " >> " + screenshot_file);

	for (var i=0; i< browsers_to_check.length; i++) {
		takeScreenshot(browsers_to_check[i], url, screenshot_file);
	}

}

textstream.Close();