// Python Tutor: https://github.com/pgbovine/OnlinePythonTutor/

// Copyright (C) Philip Guo (philip@pgbovine.net)

// LICENSE: https://github.com/pgbovine/OnlinePythonTutor/blob/master/LICENSE.txt

var optCommon = require('./opt-frontend-common.ts');

var pytutor = require('./pytutor.ts');

var assert = pytutor.assert;

require('../css/opt-frontend.css');

var originFrontendJsFile = 'iframe-embed.js';

function NOP() {};

function iframeHandleUncaughtException(trace) {

var excMsg = null;

if (trace.length == 1) {

excMsg = trace[0].exception_msg; // killer!

}

else if (trace.length > 0 && trace[trace.length - 1].exception_msg) {

excMsg = trace[trace.length - 1].exception_msg;

}

else {

excMsg = "Unknown error. Reload the page and try again. Or report a bug to philip@pgbovine.net";

}

$("#vizDiv").html(pytutor.htmlspecialchars(excMsg));

}

$(document).ready(function() {

optCommon.initializeFrontendParams({originFrontendJsFile: originFrontendJsFile,

executeCode: executeCode});

var queryStrOptions = optCommon.getQueryStringOptions();

var preseededCode = queryStrOptions.preseededCode;

var pyState = queryStrOptions.py;

var verticalStackBool = (queryStrOptions.verticalStack == 'true');

var heapPrimitivesBool = (queryStrOptions.heapPrimitives == 'true');

var textRefsBool = (queryStrOptions.textReferences == 'true');

var cumModeBool = (queryStrOptions.cumulative == 'true');

// these two are deprecated

var drawParentPointerBool = (queryStrOptions.drawParentPointers == 'true');

var showOnlyOutputsBool = (queryStrOptions.showOnlyOutputs == 'true');

var codeDivWidth = undefined;

var cdw = $.bbq.getState('codeDivWidth');

if (cdw) {

codeDivWidth = Number(cdw);

}

var codeDivHeight = undefined;

var cdh = $.bbq.getState('codeDivHeight');

if (cdh) {

codeDivHeight = Number(cdh);

}

var startingInstruction = queryStrOptions.preseededCurInstr;

if (!startingInstruction) {

startingInstruction = 0;

}

var backend_script = optCommon.langToBackendScript(pyState);

assert(backend_script);

// David Pritchard's code for resizeContainer option ...

var resizeContainer = ($.bbq.getState('resizeContainer') == 'true');

if (resizeContainer) {

function findContainer() {

var ifs = window.top.document.getElementsByTagName("iframe");

for(var i = 0, len = ifs.length; i < len; i++) {

var f = ifs[i];

var fDoc = f.contentDocument || f.contentWindow.document;

if(fDoc === document) {

return f;

}

}

}

var container = findContainer();

function resizeContainerNow() {

$(container).height($("html").height());

};

}

// set up all options in a JS object

var backendOptionsObj = {cumulative_mode: cumModeBool,

heap_primitives: heapPrimitivesBool,

show_only_outputs: showOnlyOutputsBool,

py_crazy_mode: (pyState == '2crazy'),

origin: originFrontendJsFile};

var frontendOptionsObj = {startingInstruction: startingInstruction,

embeddedMode: true,

verticalStack: verticalStackBool,

disableHeapNesting: heapPrimitivesBool,

drawParentPointers: drawParentPointerBool,

textualMemoryLabels: textRefsBool,

showOnlyOutputs: showOnlyOutputsBool,

executeCodeWithRawInputFunc: optCommon.executeCodeWithRawInput,

heightChangeCallback: (resizeContainer ? resizeContainerNow : NOP),

// undocumented experimental modes:

pyCrazyMode: (pyState == '2crazy'),

highlightLines: typeof $.bbq.getState("highlightLines") !== "undefined",

codeDivWidth: codeDivWidth,

codeDivHeight: codeDivHeight,

}

function executeCode(forceStartingInstr) {

if (forceStartingInstr) {

frontendOptionsObj.startingInstruction = forceStartingInstr;

}

optCommon.executeCodeAndCreateViz(preseededCode,

backend_script, backendOptionsObj,

frontendOptionsObj,

'vizDiv',

function() { // success

if (resizeContainer)

resizeContainerNow();

var myVisualizer = optCommon.getVisualizer();

myVisualizer.redrawConnectors();

},

iframeHandleUncaughtException);

}

// log a generic AJAX error handler

$(document).ajaxError(function() {

alert("Ugh, Online Python Tutor server error :( Email philip@pgbovine.net");

});

// redraw connector arrows on window resize

$(window).resize(function() {

var myVisualizer = optCommon.getVisualizer();

myVisualizer.redrawConnectors();

});

optCommon.executeCodeFromScratch(); // finally, execute code and display visualization

});