/**
 * Wait until the test condition is true or a timeout occurs. Useful for waiting
 * on a server response or for a ui change (fadeIn, etc.) to occur.
 *
 * @param testFx javascript condition that evaluates to a boolean,
 * it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
 * as a callback function.
 * @param onReady what to do when testFx condition is fulfilled,
 * it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
 * as a callback function.
 * @param timeOutMillis the max amount of time to wait. If not specified, 3 sec is used.
 */
function waitFor(testFx, onReady, timeOutMillis) {
    var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 30001, //< Default Max Timout is 3s
        start = new Date().getTime(),
        condition = false,
        interval = setInterval(function() {
            if ( (new Date().getTime() - start < maxtimeOutMillis) && !condition ) {
                // If not time-out yet and condition not yet fulfilled
                condition = (typeof(testFx) === "string" ? eval(testFx) : testFx()); //< defensive code
            } else {
                if(!condition) {
                    // If condition still not fulfilled (timeout but condition is 'false')
                    console.log("'waitFor()' timeout");
                    phantom.exit(1);
                } else {
                    // Condition fulfilled (timeout and/or condition is 'true')
                    // console.log("'waitFor()' finished in " + (new Date().getTime() - start) + "ms.");
                    typeof(onReady) === "string" ? eval(onReady) : onReady(); //< Do what it's supposed to do once the condition is fulfilled
                    clearInterval(interval); //< Stop this interval
                }
            }
        }, 100); //< repeat check every 250ms
};


if (phantom.args.length === 0 || phantom.args.length > 2) {
    console.log('Usage: run-qunit.js URL');
    phantom.exit(1);
}

var page = require('webpage').create();

// Route "console.log()" calls from within the Page context to the main Phantom context (i.e. current "this")
page.onConsoleMessage = function(msg) {
    console.log(msg);
};

page.open(phantom.args[0], function(status){
    if (status !== "success") {
        console.log("Unable to access network");
        phantom.exit(1);
    } else {
        console.log("-------------");
        console.log("Running QUnit tests for: " + phantom.args[0]);
        console.log("-------------");

        waitFor(function(){
            return page.evaluate(function(){
                var el = document.getElementById('qunit-testresult');
                if (el && el.innerText.match('completed')) {
                    return true;
                }
                return false;
            });
        }, function(){
            var failedNum = page.evaluate(function(){
                // Print out any failed tests
                var failedTests = document.body.querySelectorAll('#qunit-tests > .fail');

                for (var i = 0; i < failedTests.length; ++i) {
                    var failedTest = failedTests[i];
                    var testName = failedTest.querySelector('.test-name').innerText;
                    console.log(String.fromCharCode( "0x2717" ) + " Test failed: " + testName);

                    var failedAsserts = failedTest.getElementsByClassName('fail')
                    for (var j = 0; j < failedAsserts.length; ++j) {
                        var failedAssert = failedAsserts[j];
                        var assertMessage = failedAssert.querySelector('.test-message').innerText;
                        console.log("  " + String.fromCharCode( "0x21B3" ) + " Failed assertion: " + assertMessage);
                    };
                };

                var el = document.getElementById('qunit-testresult');
                console.log("-------------");
                console.log(el.innerText);
                console.log("-------------");
                try {
                    return el.getElementsByClassName('failed')[0].innerHTML;
                } catch (e) { }
                return 10000;
            });
            phantom.exit((parseInt(failedNum, 10) > 0) ? 1 : 0);
        });

    }
});