import view = require("ui/core/view");

import frame = require("ui/frame");

import page = require("ui/page");

import stackLayoutModule = require("ui/layouts/stack-layout");

import button = require("ui/button");

import TKUnit = require("../TKUnit");

import utils = require("utils/utils");

import types = require("utils/types");

import styling = require("ui/styling");

import platform = require("platform");

var DELTA = 0.1;

export var ASYNC = 0.2;

export var MEMORY_ASYNC = 2;

function clearPage(): void {

let newPage = getCurrentPage();

if (!newPage) {

TKUnit.waitUntilReady(() => getCurrentPage() !== null);

newPage = getCurrentPage();

}

if (!newPage) {

throw new Error("NO CURRENT PAGE!!!!");

}

newPage.style._resetValue(styling.properties.backgroundColorProperty);

newPage.style._resetValue(styling.properties.colorProperty);

newPage._resetValue(button.Button.bindingContextProperty);

newPage._resetValue(button.Button.cssClassProperty);

newPage._resetValue(button.Button.idProperty);

}

export function do_PageTest(test: (views: Array<view.View>) => void, content: view.View, secondView: view.View, thirdView: view.View) {

clearPage();

let newPage = getCurrentPage();

newPage.content = content;

test([newPage, content, secondView, thirdView, newPage.actionBar]);

newPage.content = null;

}

export function do_PageTest_WithButton(test: (views: Array<view.View>) => void) {

clearPage();

let newPage = getCurrentPage();

let btn = new button.Button();

newPage.content = btn;

test([newPage, btn, newPage.actionBar]);

newPage.content = null;

}

export function do_PageTest_WithStackLayout_AndButton(test: (views: Array<view.View>) => void) {

clearPage();

let newPage = getCurrentPage();

let stackLayout = new stackLayoutModule.StackLayout();

let btn = new button.Button();

stackLayout.addChild(btn);

newPage.content = stackLayout;

test([newPage, stackLayout, btn, newPage.actionBar]);

newPage.content = null;

}

//export function buildUIAndRunTest(controlToTest, testFunction, pageCss?, testDelay?) {

export function buildUIAndRunTest(controlToTest, testFunction, pageCss?) {

clearPage();

let newPage = getCurrentPage();

newPage.content = controlToTest;

if (pageCss) {

newPage.css = pageCss;

}

testFunction([controlToTest, newPage]);

newPage.content = null;

newPage.css = null;

}

export function buildUIWithWeakRefAndInteract<T extends view.View>(createFunc: () => T, interactWithViewFunc?: (view: T) => void, done?) {

clearPage();

let newPage = getCurrentPage();

let sp = new stackLayoutModule.StackLayout();

let testFinished = false;

sp.on("loaded", () => {

let weakRef = new WeakRef(createFunc());

try {

sp.addChild(weakRef.get());

if (interactWithViewFunc) {

interactWithViewFunc(weakRef.get());

}

sp.removeChild(weakRef.get());

if (newPage.ios) {

/* tslint:disable:no-unused-expression */

// Could cause GC on the next call.

// NOTE: Don't replace this with forceGC();

new ArrayBuffer(4 * 1024 * 1024);

}

utils.GC();

TKUnit.waitUntilReady(() => { return weakRef.get() ? !(weakRef.get().isLoaded) : true; }, MEMORY_ASYNC);

TKUnit.assert(!weakRef.get(), weakRef.get() + " leaked!");

testFinished = true;

}

catch (e) {

done(e);

}

});

newPage.content = sp;

TKUnit.waitUntilReady(() => testFinished, MEMORY_ASYNC);

TKUnit.assertTrue(testFinished, "Test did not completed.")

done(null);

}

export function navigateToModuleAndRunTest(moduleName, context, testFunction) {

let page = navigateToModule(moduleName, context);

testFunction(page);

}

export function navigate(pageFactory: () => page.Page, navigationContext?: any): page.Page {

let entry: frame.NavigationEntry = { create: pageFactory, animated: false, context: navigationContext, clearHistory: true };

return navigateWithEntry(entry);

}

export function navigateWithHistory(pageFactory: () => page.Page, navigationContext?: any): page.Page {

let entry: frame.NavigationEntry = { create: pageFactory, animated: false, context: navigationContext, clearHistory: false };

return navigateWithEntry(entry);

}

export function navigateToModule(moduleName: string, context?: any): page.Page {

let entry: frame.NavigationEntry = { moduleName: moduleName, context: context, animated: false, clearHistory: true };

return navigateWithEntry(entry);

}

export function getCurrentPage(): page.Page {

return frame.topmost().currentPage;

}

export function getClearCurrentPage(): page.Page {

let page = frame.topmost().currentPage;

page.style._resetValue(styling.properties.backgroundColorProperty);

page.style._resetValue(styling.properties.colorProperty);

page._resetValue(button.Button.bindingContextProperty);

page._resetValue(button.Button.cssClassProperty);

page._resetValue(button.Button.idProperty);

return page;

}

export function waitUntilNavigatedFrom(oldPage: page.Page) {

TKUnit.waitUntilReady(() => getCurrentPage() && getCurrentPage() !== oldPage);

}

export function navigateWithEntry(entry: frame.NavigationEntry): page.Page {

let page = frame.resolvePageFromEntry(entry);

entry.moduleName = null;

entry.create = function () {

return page;

}

let currentPage = getCurrentPage();

frame.topmost().navigate(entry);

waitUntilNavigatedFrom(currentPage);

return page;

}

export function goBack() {

let currentPage = getCurrentPage();

frame.topmost().goBack();

waitUntilNavigatedFrom(currentPage);

}

export function assertAreClose(actual: number, expected: number, message: string): void {

var density = utils.layout.getDisplayDensity();

var delta = Math.floor(density) !== density ? 1.1 : DELTA;

TKUnit.assertAreClose(actual, expected, delta, message);

}

export function assertViewColor(testView: view.View, hexColor: string, valueSource?: number) {

TKUnit.assert(testView.style.color, "Color property not applied correctly. Style value is not defined.");

TKUnit.assertEqual(testView.style.color.hex, hexColor, "color property");

if (types.isDefined(valueSource)) {

TKUnit.assertEqual(testView.style._getValueSource(styling.properties.colorProperty), valueSource, "valueSource");

}

}

export function assertViewBackgroundColor(testView: view.View, hexColor: string) {

TKUnit.assert(testView.style.backgroundColor, "Background color property not applied correctly. Style value is not defined.");

TKUnit.assertEqual(testView.style.backgroundColor.hex, hexColor, "backgroundColor property");

}

export function forceGC() {

if (platform.device.os === platform.platformNames.ios) {

/* tslint:disable:no-unused-expression */

// Could cause GC on the next call.

new ArrayBuffer(4 * 1024 * 1024);

TKUnit.wait(ASYNC);

}

utils.GC();

}