/*
 * Copyright (C) 2010 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 "WebPageProxy.h"

#import "PageClient.h"
#import <wtf/text/StringConcatenate.h>

@interface NSApplication (Details)
- (void)speakString:(NSString *)string;
@end

using namespace WebCore;

namespace WebKit {

#if defined(__ppc__) || defined(__ppc64__)
#define PROCESSOR "PPC"
#elif defined(__i386__) || defined(__x86_64__)
#define PROCESSOR "Intel"
#else
#error Unknown architecture
#endif

static inline int callGestalt(OSType selector)
{
    SInt32 value = 0;
    Gestalt(selector, &value);
    return value;
}

// Uses underscores instead of dots because if "4." ever appears in a user agent string, old DHTML libraries treat it as Netscape 4.
static String macOSXVersionString()
{
    // Can't use -[NSProcessInfo operatingSystemVersionString] because it has too much stuff we don't want.
    int major = callGestalt(gestaltSystemVersionMajor);
    ASSERT(major);

    int minor = callGestalt(gestaltSystemVersionMinor);
    int bugFix = callGestalt(gestaltSystemVersionBugFix);
    if (bugFix)
        return String::format("%d_%d_%d", major, minor, bugFix);
    if (minor)
        return String::format("%d_%d", major, minor);
    return String::format("%d", major);
}

static String userVisibleWebKitVersionString()
{
    // If the version is 4 digits long or longer, then the first digit represents
    // the version of the OS. Our user agent string should not include this first digit,
    // so strip it off and report the rest as the version. <rdar://problem/4997547>
    NSString *fullVersion = [[NSBundle bundleForClass:NSClassFromString(@"WKView")] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
    NSRange nonDigitRange = [fullVersion rangeOfCharacterFromSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]];
    if (nonDigitRange.location == NSNotFound && [fullVersion length] >= 4)
        return [fullVersion substringFromIndex:1];
    if (nonDigitRange.location != NSNotFound && nonDigitRange.location >= 4)
        return [fullVersion substringFromIndex:1];
    return fullVersion;
}

String WebPageProxy::standardUserAgent(const String& applicationNameForUserAgent)
{
    DEFINE_STATIC_LOCAL(String, osVersion, (macOSXVersionString()));
    DEFINE_STATIC_LOCAL(String, webKitVersion, (userVisibleWebKitVersionString()));

    if (applicationNameForUserAgent.isEmpty())
        return makeString("Mozilla/5.0 (Macintosh; " PROCESSOR " Mac OS X ", osVersion, ") AppleWebKit/", webKitVersion, " (KHTML, like Gecko)");
    return makeString("Mozilla/5.0 (Macintosh; " PROCESSOR " Mac OS X ", osVersion, ") AppleWebKit/", webKitVersion, " (KHTML, like Gecko) ", applicationNameForUserAgent);
}

void WebPageProxy::getIsSpeaking(bool& isSpeaking)
{
    isSpeaking = [NSApp isSpeaking];
}

void WebPageProxy::speak(const String& string)
{
    NSString *convertedString = string;
    [NSApp speakString:convertedString];
}

void WebPageProxy::stopSpeaking()
{
    [NSApp stopSpeaking:nil];
}

CGContextRef WebPageProxy::containingWindowGraphicsContext()
{
    return m_pageClient->containingWindowGraphicsContext();
}

} // namespace WebKit