/*
 * Copyright (C) 2014 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "config.h"

#import "PlatformUtilities.h"
#import "Test.h"
#import <WebKit/WebKit.h>
#import <wtf/RetainPtr.h>

#if WK_API_ENABLED

static bool isDoneWithNavigation;

@interface SimpleNavigationDelegate : NSObject <WKNavigationDelegate>
@end

@implementation SimpleNavigationDelegate

- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    isDoneWithNavigation = true;
}

@end

static bool receivedScriptMessage;
static RetainPtr<WKScriptMessage> lastScriptMessage;

@interface ScriptMessageHandler : NSObject <WKScriptMessageHandler>
@end

@implementation ScriptMessageHandler

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
{
    receivedScriptMessage = true;
    lastScriptMessage = message;
}

@end

TEST(WKUserContentController, ScriptMessageHandlerBasicPost)
{
    RetainPtr<ScriptMessageHandler> handler = adoptNS([[ScriptMessageHandler alloc] init]);
    RetainPtr<WKWebViewConfiguration> configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    [[configuration userContentController] addScriptMessageHandler:handler.get() name:@"testHandler"];

    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);

    RetainPtr<SimpleNavigationDelegate> delegate = adoptNS([[SimpleNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    NSURLRequest *request = [NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]];

    [webView loadRequest:request];

    TestWebKitAPI::Util::run(&isDoneWithNavigation);

    [webView evaluateJavaScript:@"window.webkit.messageHandlers.testHandler.postMessage('Hello')" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);
    receivedScriptMessage = false;

    EXPECT_WK_STREQ(@"Hello", (NSString *)[lastScriptMessage body]);
}

TEST(WKUserContentController, ScriptMessageHandlerBasicRemove)
{
    RetainPtr<ScriptMessageHandler> handler = adoptNS([[ScriptMessageHandler alloc] init]);
    RetainPtr<WKWebViewConfiguration> configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    RetainPtr<WKUserContentController> userContentController = [configuration userContentController];
    [userContentController addScriptMessageHandler:handler.get() name:@"handlerToRemove"];
    [userContentController addScriptMessageHandler:handler.get() name:@"handlerToPost"];

    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);

    RetainPtr<SimpleNavigationDelegate> delegate = adoptNS([[SimpleNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    NSURLRequest *request = [NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]];

    [webView loadRequest:request];

    TestWebKitAPI::Util::run(&isDoneWithNavigation);

    // Test that handlerToRemove was succesfully added.
    [webView evaluateJavaScript:
        @"if (window.webkit.messageHandlers.handlerToRemove) {"
         "    window.webkit.messageHandlers.handlerToPost.postMessage('PASS');"
         "} else {"
         "    window.webkit.messageHandlers.handlerToPost.postMessage('FAIL');"
         "}" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);
    receivedScriptMessage = false;

    EXPECT_WK_STREQ(@"PASS", (NSString *)[lastScriptMessage body]);

    [userContentController removeScriptMessageHandlerForName:@"handlerToRemove"];

    // Test that handlerToRemove has been removed.
    [webView evaluateJavaScript:
        @"if (window.webkit.messageHandlers.handlerToRemove) {"
         "    window.webkit.messageHandlers.handlerToPost.postMessage('FAIL');"
         "} else {"
         "    window.webkit.messageHandlers.handlerToPost.postMessage('PASS');"
         "}" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);
    receivedScriptMessage = false;

    EXPECT_WK_STREQ(@"PASS", (NSString *)[lastScriptMessage body]);
}

TEST(WKUserContentController, ScriptMessageHandlerCallRemovedHandler)
{
    RetainPtr<ScriptMessageHandler> handler = adoptNS([[ScriptMessageHandler alloc] init]);
    RetainPtr<WKWebViewConfiguration> configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    RetainPtr<WKUserContentController> userContentController = [configuration userContentController];
    [userContentController addScriptMessageHandler:handler.get() name:@"handlerToRemove"];
    [userContentController addScriptMessageHandler:handler.get() name:@"handlerToPost"];

    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);

    RetainPtr<SimpleNavigationDelegate> delegate = adoptNS([[SimpleNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    NSURLRequest *request = [NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]];

    [webView loadRequest:request];

    TestWebKitAPI::Util::run(&isDoneWithNavigation);

    [webView evaluateJavaScript:@"var handlerToRemove = window.webkit.messageHandlers.handlerToRemove;" completionHandler:nil];

    [userContentController removeScriptMessageHandlerForName:@"handlerToRemove"];

    // Test that we throw an exception if you try to use a message handler that has been removed.
    [webView evaluateJavaScript:
        @"try {"
         "    handlerToRemove.postMessage('FAIL');"
         "} catch (e) {"
         "    window.webkit.messageHandlers.handlerToPost.postMessage('PASS');"
         "}" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);
    receivedScriptMessage = false;

    EXPECT_WK_STREQ(@"PASS", (NSString *)[lastScriptMessage body]);
}

#if !PLATFORM(IOS) // FIXME: hangs in the iOS simulator
TEST(WKUserContentController, ScriptMessageHandlerWithNavigation)
{
    RetainPtr<ScriptMessageHandler> handler = adoptNS([[ScriptMessageHandler alloc] init]);
    RetainPtr<WKWebViewConfiguration> configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    [[configuration userContentController] addScriptMessageHandler:handler.get() name:@"testHandler"];

    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);

    RetainPtr<SimpleNavigationDelegate> delegate = adoptNS([[SimpleNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    NSURLRequest *request = [NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]];
    [webView loadRequest:request];

    TestWebKitAPI::Util::run(&isDoneWithNavigation);
    isDoneWithNavigation = false;

    [webView evaluateJavaScript:@"window.webkit.messageHandlers.testHandler.postMessage('First Message')" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);

    EXPECT_WK_STREQ(@"First Message", (NSString *)[lastScriptMessage body]);
    
    receivedScriptMessage = false;
    lastScriptMessage = nullptr;


    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&isDoneWithNavigation);
    isDoneWithNavigation = false;

    [webView evaluateJavaScript:@"window.webkit.messageHandlers.testHandler.postMessage('Second Message')" completionHandler:nil];

    TestWebKitAPI::Util::run(&receivedScriptMessage);

    EXPECT_WK_STREQ(@"Second Message", (NSString *)[lastScriptMessage body]);    
}
#endif

#endif