/*
 * 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.
 */

#include "config.h"

#import <WebKit/WKBackForwardListPrivate.h>
#import <WebKit/WKNavigationDelegatePrivate.h>
#import <WebKit/WKNavigationPrivate.h>
#import <WebKit/WKWebView.h>
#import <wtf/RetainPtr.h>
#import "PlatformUtilities.h"
#import "Test.h"

#if WK_API_ENABLED

static bool isDone;
static RetainPtr<WKNavigation> currentNavigation;
static RetainPtr<NSURL> redirectURL;
static NSTimeInterval redirectDelay;
static bool didCancelRedirect;

@interface NavigationDelegate : NSObject <WKNavigationDelegate>
@end

@implementation NavigationDelegate

- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation
{
    EXPECT_EQ(currentNavigation, navigation);
    EXPECT_NOT_NULL(navigation._request);
}

- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation
{
    EXPECT_EQ(currentNavigation, navigation);
}

- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    EXPECT_EQ(currentNavigation, navigation);

    isDone = true;
}

@end

TEST(WKNavigation, NavigationDelegate)
{
    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

    NavigationDelegate *delegate = [[NavigationDelegate alloc] init];
    [webView setNavigationDelegate:delegate];

    @autoreleasepool {
        EXPECT_EQ(delegate, [webView navigationDelegate]);
    }

    [delegate release];
    EXPECT_NULL([webView navigationDelegate]);
}

TEST(WKNavigation, LoadRequest)
{
    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

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

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

    currentNavigation = [webView loadRequest:request];
    ASSERT_NOT_NULL(currentNavigation);
    ASSERT_TRUE([[currentNavigation _request] isEqual:request]);

    isDone = false;
    TestWebKitAPI::Util::run(&isDone);
}

@interface DidFailProvisionalNavigationDelegate : NSObject <WKNavigationDelegate>
@end

@implementation DidFailProvisionalNavigationDelegate

- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation
{
    EXPECT_EQ(currentNavigation, navigation);
    EXPECT_NOT_NULL(navigation._request);
}

- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error
{
    EXPECT_EQ(currentNavigation, navigation);
    EXPECT_NOT_NULL(navigation._request);

    EXPECT_TRUE([error.domain isEqualToString:NSURLErrorDomain]);
    EXPECT_EQ(NSURLErrorUnsupportedURL, error.code);

    isDone = true;
}

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
    decisionHandler(WKNavigationActionPolicyAllow);
}

@end

TEST(WKNavigation, DidFailProvisionalNavigation)
{
    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

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

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"non-existant-scheme://"]];

    currentNavigation = [webView loadRequest:request];
    ASSERT_NOT_NULL(currentNavigation);
    ASSERT_TRUE([[currentNavigation _request] isEqual:request]);

    isDone = false;
    TestWebKitAPI::Util::run(&isDone);
}

@interface DecidePolicyForPageCacheNavigationDelegate : NSObject <WKNavigationDelegate>
@property (nonatomic) BOOL decidedPolicyForBackForwardNavigation;
@end

@implementation DecidePolicyForPageCacheNavigationDelegate

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

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
    if (navigationAction.navigationType == WKNavigationTypeBackForward)
        _decidedPolicyForBackForwardNavigation = YES;

    decisionHandler(WKNavigationActionPolicyAllow);
}

@end

TEST(WKNavigation, DecidePolicyForPageCacheNavigation)
{
    RetainPtr<WKWebView> webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

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

    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,1"]];

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

    request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,2"]];

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

    isDone = false;
    [webView goBack];
    TestWebKitAPI::Util::run(&isDone);

    ASSERT_TRUE([delegate decidedPolicyForBackForwardNavigation]);
}

@interface ClientRedirectNavigationDelegate : NSObject<WKNavigationDelegatePrivate>
@end

@implementation ClientRedirectNavigationDelegate
- (void)_webView:(WKWebView *)webView willPerformClientRedirectToURL:(NSURL *)URL delay:(NSTimeInterval)delay
{
    redirectURL = URL;
    redirectDelay = delay;
}
- (void)_webViewDidCancelClientRedirect:(WKWebView *)webView
{
    didCancelRedirect = true;
}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    isDone = true;
}
@end

TEST(WKNavigation, WebViewWillPerformClientRedirect)
{
    auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

    auto delegate = adoptNS([[ClientRedirectNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    auto request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,%3Cmeta%20http-equiv=%22refresh%22%20content=%22123;URL=data:text/html,Page1%22%3E"]];

    isDone = false;
    redirectURL = nil;
    redirectDelay = 0;
    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&isDone);

    ASSERT_DOUBLE_EQ(redirectDelay, 123);
    ASSERT_STREQ(redirectURL.get().absoluteString.UTF8String, "data:text/html,Page1");

    request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,%3Cscript%3Ewindow.location=%22data:text/html,Page2%22;%3C/script%3E"]];
    isDone = false;
    redirectURL = nil;
    redirectDelay = NSTimeIntervalSince1970; // Use any non-zero value, we will test that the delegate receives a delay of 0.
    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&isDone);

    ASSERT_DOUBLE_EQ(redirectDelay, 0);
    ASSERT_STREQ(redirectURL.get().absoluteString.UTF8String, "data:text/html,Page2");
}

TEST(WKNavigation, WebViewDidCancelClientRedirect)
{
    auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);

    auto delegate = adoptNS([[ClientRedirectNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    // Test 1: During a navigation that is not a client redirect, -_webViewDidCancelClientRedirect: should not be called.

    auto request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,Page1"]];

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

    ASSERT_FALSE(didCancelRedirect);

    // Test 2: When a client redirect does happen, -_webViewDidCancelClientRedirect: should still be called. It essentially
    // is called whenever the web view transitions from "expecting a redirect" to "not expecting a redirect".

    request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,%3Cscript%3Ewindow.location=%22data:text/html,Page2%22;%3C/script%3E"]];
    isDone = false;
    didCancelRedirect = false;
    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&isDone);

    ASSERT_FALSE(didCancelRedirect);

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

    ASSERT_TRUE(didCancelRedirect);

    // Test 3: When another navigation begins while a client redirect is scheduled, -_webViewDidCancelClientRedirect:
    // should be called.

    request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,%3Cmeta%20http-equiv=%22refresh%22%20content=%2210000;URL=data:text/html,Page3%22%3E"]];

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

    ASSERT_FALSE(didCancelRedirect);

    request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"data:text/html,Page4"]];
    isDone = false;
    [webView loadRequest:request];
    TestWebKitAPI::Util::run(&isDone);

    ASSERT_TRUE(didCancelRedirect);
}

#if PLATFORM(MAC)

static bool navigationComplete;

@interface BackForwardDelegate : NSObject<WKNavigationDelegatePrivate>
@end
@implementation BackForwardDelegate
- (void)_webView:(WKWebView *)webView willGoToBackForwardListItem:(WKBackForwardListItem *)item inPageCache:(BOOL)inPageCache
{
    const char* expectedURL = [[[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"] absoluteString] UTF8String];
    EXPECT_STREQ(item.URL.absoluteString.UTF8String, expectedURL);
    EXPECT_TRUE(item.title == nil);
    EXPECT_STREQ(item.initialURL.absoluteString.UTF8String, expectedURL);
    EXPECT_TRUE(inPageCache);
    isDone = true;
}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    navigationComplete = true;
}
@end

TEST(WKNavigation, WillGoToBackForwardListItem)
{
    auto webView = adoptNS([[WKWebView alloc] init]);
    auto delegate = adoptNS([[BackForwardDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];
    [webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]]];
    TestWebKitAPI::Util::run(&navigationComplete);
    navigationComplete = false;
    [webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple2" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]]];
    TestWebKitAPI::Util::run(&navigationComplete);
    [webView goBack];
    TestWebKitAPI::Util::run(&isDone);
}

RetainPtr<WKBackForwardListItem> firstItem;
RetainPtr<WKBackForwardListItem> secondItem;

@interface ListItemDelegate : NSObject<WKNavigationDelegatePrivate>
@end
@implementation ListItemDelegate
- (void)_webView:(WKWebView *)webView backForwardListItemAdded:(WKBackForwardListItem *)itemAdded removed:(NSArray<WKBackForwardListItem *> *)itemsRemoved
{
    NSString *firstURL = [[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"].absoluteString;
    NSString *secondURL = [[NSBundle mainBundle] URLForResource:@"simple2" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"].absoluteString;

    if (!firstItem) {
        EXPECT_NULL(firstItem);
        EXPECT_NULL(secondItem);
        EXPECT_NULL(itemsRemoved);
        EXPECT_NOT_NULL(itemAdded);
        EXPECT_STREQ(firstURL.UTF8String, itemAdded.URL.absoluteString.UTF8String);
        firstItem = itemAdded;
    } else if (!secondItem) {
        EXPECT_NOT_NULL(firstItem);
        EXPECT_NULL(secondItem);
        EXPECT_NULL(itemsRemoved);
        EXPECT_NOT_NULL(itemAdded);
        EXPECT_STREQ(secondURL.UTF8String, itemAdded.URL.absoluteString.UTF8String);
        secondItem = itemAdded;
    } else {
        EXPECT_NOT_NULL(firstItem);
        EXPECT_NOT_NULL(secondItem);
        EXPECT_NOT_NULL(itemsRemoved);
        EXPECT_NULL(itemAdded);
        EXPECT_EQ([itemsRemoved count], 2u);
        EXPECT_STREQ(firstURL.UTF8String, [itemsRemoved objectAtIndex:0].URL.absoluteString.UTF8String);
        EXPECT_STREQ(secondURL.UTF8String, [itemsRemoved objectAtIndex:1].URL.absoluteString.UTF8String);
        isDone = true;
    }
}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    navigationComplete = true;
}
@end

TEST(WKNavigation, ListItemAddedRemoved)
{
    auto webView = adoptNS([[WKWebView alloc] init]);
    auto delegate = adoptNS([[ListItemDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];
    [webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]]];
    TestWebKitAPI::Util::run(&navigationComplete);
    navigationComplete = false;
    [webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"simple2" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]]];
    TestWebKitAPI::Util::run(&navigationComplete);
    [[webView backForwardList] _removeAllItems];
    TestWebKitAPI::Util::run(&isDone);
}
#endif // PLATFORM(MAC)

#endif // WK_API_ENABLED