/*
 * Copyright (C) 2017 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 "DumpRenderTreeSpellChecker.h"

#if PLATFORM(MAC)

#import <AppKit/NSSpellChecker.h>
#import <wtf/Assertions.h>
#import <wtf/ObjcRuntimeExtras.h>

static bool spellCheckerLoggingEnabled;
static IMP appKitRecordResponseIMP;

static const char *stringForCorrectionResponse(NSCorrectionResponse correctionResponse)
{
    switch (correctionResponse) {
    case NSCorrectionResponseNone:
        return "none";
    case NSCorrectionResponseAccepted:
        return "accepted";
    case NSCorrectionResponseRejected:
        return "rejected";
    case NSCorrectionResponseIgnored:
        return "ignored";
    case NSCorrectionResponseEdited:
        return "edited";
    case NSCorrectionResponseReverted:
        return "reverted";
    }

    return "invalid";
}

static void drt_NSSpellChecker_recordResponseToCorrection(id self, SEL _cmd, NSCorrectionResponse response, NSString *correction, NSString *word, NSString *language, NSInteger spellDocumentTag)
{
    if (spellCheckerLoggingEnabled)
        printf("NSSpellChecker recordResponseToCorrection: %s -> %s (response: %s)\n", [word UTF8String], [correction UTF8String], stringForCorrectionResponse(response));

    wtfCallIMP<void, NSCorrectionResponse, NSString *, NSString *, NSString *, NSInteger>(appKitRecordResponseIMP, self, _cmd, response, correction, word, language, spellDocumentTag);
}

static void swizzleNSSpellCheckerMethodsIfNeeded()
{
    static bool hasSwizzled;
    if (hasSwizzled)
        return;
    hasSwizzled = true;

    Method recordResponseMethod = class_getInstanceMethod(objc_getClass("NSSpellChecker"), @selector(recordResponse:toCorrection:forWord:language:inSpellDocumentWithTag:));

    appKitRecordResponseIMP = method_setImplementation(recordResponseMethod, (IMP)drt_NSSpellChecker_recordResponseToCorrection);
}

void setSpellCheckerLoggingEnabled(bool enabled)
{
    swizzleNSSpellCheckerMethodsIfNeeded();

    spellCheckerLoggingEnabled = enabled;
}

#else // PLATFORM(MAC)

void setSpellCheckerLoggingEnabled(bool)
{
}

#endif // PLATFORM(MAC)