/*
 * Copyright (C) 2019 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"

#if PLATFORM(IOS_FAMILY)

#import "PlatformUtilities.h"
#import "TestInputDelegate.h"
#import "TestWKWebView.h"
#import "UIKitSPI.h"
#import <wtf/BlockPtr.h>

TEST(SelectionTests, ByWordAtEndOfDocument)
{
    auto webView = adoptNS([[TestWKWebView alloc] init]);

    [webView synchronouslyLoadHTMLString:@"<body><p>Paragraph One</p><p style='-webkit-user-select: none'>Paragraph Two</p><p>Paragraph Three</p><p></p></body>"];

    [webView stringByEvaluatingJavaScript:@"getSelection().setPosition(document.body.lastChild, 0)"];

    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"getSelection().isCollapsed"].boolValue);

    // This method triggers the wordRangeFromPosition() code to be tested.
    [[webView textInputContentView] selectWordForReplacement];

    EXPECT_FALSE([webView stringByEvaluatingJavaScript:@"getSelection().isCollapsed"].boolValue);
    EXPECT_WK_STREQ([webView stringByEvaluatingJavaScript:@"getSelection().anchorNode.nodeValue"], "Paragraph Three");
    EXPECT_WK_STREQ([webView stringByEvaluatingJavaScript:@"getSelection().anchorOffset"], "10");
    EXPECT_WK_STREQ([webView stringByEvaluatingJavaScript:@"getSelection().focusNode.nodeValue"], "Paragraph Three");
    EXPECT_WK_STREQ([webView stringByEvaluatingJavaScript:@"getSelection().focusOffset"], "15");

    EXPECT_WK_STREQ([webView stringByEvaluatingJavaScript:@"getSelection().toString()"], "Three");
}

TEST(SelectionTests, SelectWordForReplacementWithDictationAlternative)
{
    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 320)]);
    [webView synchronouslyLoadTestPageNamed:@"editable-responsive-body"];

    auto contentView = [webView textInputContentView];
    [contentView selectAll:nil];
    [contentView insertText:@"foo bar"];
    [webView waitForNextPresentationUpdate];

    auto alternatives = adoptNS([[NSTextAlternatives alloc] initWithPrimaryString:@"foo bar" alternativeStrings:@[ @"baz" ]]);
    [[webView textInputContentView] addTextAlternatives:alternatives.get()];
    [[webView textInputContentView] selectWordForReplacement];
    [webView waitForNextPresentationUpdate];

    EXPECT_WK_STREQ("foo bar", [webView selectedText]);
}

@interface SelectionChangeListener : NSObject <UITextInputDelegate>
@property (nonatomic) dispatch_block_t selectionWillChangeHandler;
@property (nonatomic) dispatch_block_t selectionDidChangeHandler;
@end

@implementation SelectionChangeListener {
    BlockPtr<void()> _selectionWillChangeHandler;
    BlockPtr<void()> _selectionDidChangeHandler;
}

- (void)setSelectionWillChangeHandler:(dispatch_block_t)handler
{
    _selectionWillChangeHandler = makeBlockPtr(handler);
}

- (void)setSelectionDidChangeHandler:(dispatch_block_t)handler
{
    _selectionDidChangeHandler = makeBlockPtr(handler);
}

- (dispatch_block_t)selectionWillChangeHandler
{
    return _selectionWillChangeHandler.get();
}

- (dispatch_block_t)selectionDidChangeHandler
{
    return _selectionDidChangeHandler.get();
}

- (void)selectionWillChange:(id <UITextInput>)textInput
{
    if (_selectionWillChangeHandler)
        _selectionWillChangeHandler();
}

- (void)selectionDidChange:(id <UITextInput>)textInput
{
    if (_selectionDidChangeHandler)
        _selectionDidChangeHandler();
}

- (void)textWillChange:(id <UITextInput>)textInput
{
}

- (void)textDidChange:(id <UITextInput>)textInput
{
}

@end

TEST(SelectionTests, SelectedTextAfterSelectingWordForReplacement)
{
    auto listener = adoptNS([[SelectionChangeListener alloc] init]);
    auto webView = adoptNS([[TestWKWebView alloc] init]);
    [webView synchronouslyLoadHTMLString:@"<body contenteditable><p>Hello</p></body><script>document.body.focus()</script>"];

    auto contentView = [webView textInputContentView];
    [contentView setInputDelegate:listener.get()];

    __block bool selectionWillChange = false;
    [listener setSelectionWillChangeHandler:^{
        selectionWillChange = true;
    }];

    __block bool selectionDidChange = false;
    [listener setSelectionDidChangeHandler:^{
        selectionDidChange = true;
    }];

    [contentView selectWordForReplacement];
    [webView waitForNextPresentationUpdate];

    TestWebKitAPI::Util::run(&selectionWillChange);
    TestWebKitAPI::Util::run(&selectionDidChange);
    EXPECT_WK_STREQ("Hello", [contentView textInRange:contentView.selectedTextRange]);
}

#endif // PLATFORM(IOS_FAMILY)