//
//  KMOCTool.m
//  PDF Reader Pro
//
//  Created by liujiajie on 2023/11/15.
//

#import "KMOCTool.h"
#import <Foundation/Foundation.h>
#import <PDF_Reader_Pro-Swift.h>

@implementation KMOCTool
+ (void)createPDFFile:(NSString *)filePath imagePaths:(NSArray *)paths results:(NSArray *)resultsArray scale:(CGFloat)scale {
    if (paths.count < 1) {
        return;
    }
    
    CFStringRef path = (__bridge CFStringRef)filePath;
    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path, kCFURLPOSIXPathStyle, 0);
    CFMutableDictionaryRef myDictionary = CFDictionaryCreateMutable(NULL,
                                                                    0,
                                                                    &kCFTypeDictionaryKeyCallBacks,
                                                                    &kCFTypeDictionaryValueCallBacks);
    CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("Kdan Mobile PDF Reader"));
    
    CGContextRef pdfContext = CGPDFContextCreateWithURL(url, &CGRectZero, myDictionary);
    CGContextSetRGBFillColor(pdfContext, 1.0, 0.0, 0.0, 0.0);
    CGContextSetTextDrawingMode(pdfContext, kCGTextFill);
    
    CFRelease(myDictionary);
    CFRelease(url);
    
    for (int i=0; i<paths.count; i++) {
        NSString *path = [paths objectAtIndex:i];
        NSImage *image = [[NSImage alloc] initWithContentsOfFile:path];
        CIImage *imageCIImage = [CIImage imageWithContentsOfURL:[NSURL fileURLWithPath:path]];
        NSSize size = [imageCIImage extent].size;
        CGRect pageRect = CGRectMake(0, 0, size.width/scale, size.height/scale);
        
        CFMutableDictionaryRef pageDictionary = CFDictionaryCreateMutable(NULL,
                                                                          0,
                                                                          &kCFTypeDictionaryKeyCallBacks,
                                                                          &kCFTypeDictionaryValueCallBacks);
        CFDataRef boxData = CFDataCreate(NULL,(const UInt8 *)&pageRect, sizeof (CGRect));
        CFDictionarySetValue(pageDictionary, kCGPDFContextMediaBox, boxData);
        CGPDFContextBeginPage (pdfContext, pageDictionary);

        NSData *imageData = [NSData dataWithContentsOfFile:path];
        CGImageSourceRef imageSource = CGImageSourceCreateWithData((CFDataRef)imageData, NULL);
        CGImageRef imageRef = CGImageSourceCreateImageAtIndex(imageSource, 0, NULL);
        CGContextSaveGState(pdfContext);
        CGContextDrawImage(pdfContext, pageRect, imageRef);
        CGContextRestoreGState(pdfContext);
        CGImageRelease(imageRef);
        
        [NSGraphicsContext saveGraphicsState];
        [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithCGContext:pdfContext flipped:NO]];
        NSArray *results = nil;
        if (i < resultsArray.count) {
            results = resultsArray[i];
            CGFloat newScale = scale;
            if([KMGOCRManager defaultManager].OCRType == KMOCRType_Apple)
                newScale = 1;
            if (results.count == 1) {
                KMGOCRResult *result = results[0];
                NSRect bounds = NSMakeRect((result.textBounds.origin.x)/newScale,
                                           pageRect.size.height-(result.textBounds.origin.y+result.textBounds.size.height)/newScale,
                                           (result.textBounds.size.width)/newScale,
                                           (result.textBounds.size.height)/newScale);
                NSDictionary *dic = @{NSFontAttributeName:FontWithSize(result.text, CGSizeMake(result.textBounds.size.width/newScale, result.textBounds.size.height/newScale)),
                                      NSForegroundColorAttributeName:[NSColor clearColor]};
                [result.text drawInRect:bounds withAttributes:dic];
            } else {
                for (int i=1; i<results.count; i++) {
                    KMGOCRResult *result = results[i];
                    NSRect bounds = NSMakeRect((result.textBounds.origin.x)/newScale,
                                               pageRect.size.height-(result.textBounds.origin.y+result.textBounds.size.height)/newScale,
                                               (result.textBounds.size.width)/newScale,
                                               (result.textBounds.size.height)/newScale);
                    NSDictionary *dic = @{NSFontAttributeName:FontWithSize(result.text, CGSizeMake(result.textBounds.size.width/newScale, result.textBounds.size.height/newScale)),
                                          NSForegroundColorAttributeName:[NSColor clearColor]};
                    [result.text drawInRect:bounds withAttributes:dic];
                }
            }
        }
        [NSGraphicsContext restoreGraphicsState];
        
        CGPDFContextEndPage (pdfContext);
        
        CFRelease(pageDictionary);
        CFRelease(boxData);
        image = nil;
    }
    
    CGPDFContextClose(pdfContext);
    CGContextRelease (pdfContext);
}

+ (CGRect)localCropRectForWindow:(CGWindowID)wNumber withBounds:(CGRect)bounds{
    CFArrayRef tarray = CGWindowListCreate(kCGWindowListOptionOnScreenOnly,
                                           (CGWindowID)wNumber);
    CFArrayRef array = CGWindowListCreateDescriptionFromArray(tarray);
    CFRelease(tarray);
    
    CGRect cropRect = bounds;
    for (NSDictionary *windowInfo in CFBridgingRelease(array)) {
        if ([windowInfo[(__bridge NSString*)kCGWindowNumber] integerValue] == wNumber) {
            NSDictionary *rectInfo = windowInfo[(__bridge NSString*)kCGWindowBounds];
            
            NSScreen *mainScreen = nil;
            for (NSScreen *screen in [NSScreen screens]) {
                if (CGPointEqualToPoint(screen.frame.origin, CGPointZero))
                    mainScreen = screen;
            }
            
            CGPoint center = CGPointMake([rectInfo[@"X"] floatValue] + [rectInfo[@"Width"] floatValue]/2,
                                         mainScreen.frame.size.height - [rectInfo[@"Y"] floatValue] - [rectInfo[@"Height"] floatValue]/2);
            
            NSScreen *curScreen = nil;
            for (NSScreen *screen in [NSScreen screens]) {
                if (CGRectContainsPoint(screen.frame, center)) {
                    curScreen = screen;
                    break;
                }
            }
            if (!curScreen) {
                center = CGPointMake([rectInfo[@"X"] floatValue],
                                     mainScreen.frame.size.height - [rectInfo[@"Y"] floatValue]);
                
                for (NSScreen *screen in [NSScreen screens]) {
                    if (CGRectContainsPoint(screen.frame, center)) {
                        curScreen = screen;
                        break;
                    }
                }
                
                if (!curScreen) {
                    center = CGPointMake([rectInfo[@"X"] floatValue] + [rectInfo[@"Width"] floatValue],
                                         mainScreen.frame.size.height - [rectInfo[@"Y"] floatValue]);
                    
                    for (NSScreen *screen in [NSScreen screens]) {
                        if (CGRectContainsPoint(screen.frame, center)) {
                            curScreen = screen;
                            break;
                        }
                    }
                }
            }
            if (curScreen) {
                float y = mainScreen.frame.size.height - [rectInfo[@"Y"] floatValue] - curScreen.frame.origin.y;
                cropRect = CGRectMake([rectInfo[@"X"] floatValue] - curScreen.frame.origin.x,
                                      y - [rectInfo[@"Height"] floatValue],
                                      [rectInfo[@"Width"] floatValue],
                                      [rectInfo[@"Height"] floatValue]);
            }else {
        
            }
            break;
        }
    }
    return cropRect;
}

+(NSAttributedString *)transformAttr:(NSAttributedString *)astring withString:(NSString *)str{
    NSUInteger i, l = [str length];
    NSRange r = NSMakeRange(0, l);
    while (NSNotFound != (i = NSMaxRange([str rangeOfCharacterFromSet:[NSCharacterSet whitespaceAndNewlineCharacterSet] options:NSAnchoredSearch range:r])))
        r = NSMakeRange(i, l - i);
    while (NSNotFound != (i = [str rangeOfCharacterFromSet:[NSCharacterSet whitespaceAndNewlineCharacterSet] options:NSBackwardsSearch | NSAnchoredSearch range:r].location))
        r.length = i - r.location;
    if (r.length == 0)
        astring = nil;
    else if (NSMaxRange(r) < l)
        astring = [astring attributedSubstringFromRange:r];
    
    return astring;
}

+ (id)nonWhitespaceAndNewlineCharacterSet {
    static NSCharacterSet *nonWhitespaceAndNewlineCharacterSet = nil;
    if (nonWhitespaceAndNewlineCharacterSet == nil)
        nonWhitespaceAndNewlineCharacterSet = [[[NSCharacterSet whitespaceAndNewlineCharacterSet] invertedSet] copy];
    return nonWhitespaceAndNewlineCharacterSet;
}

+(NSData*)convertStringsToPDFWithString:(NSArray *)strings{
    return convertStringsToPDF(strings);
}

static inline NSFont * FontWithSize(NSString *strChar, CGSize size) {
    CGFloat fontsize = 1.0;
    NSFont *font = [NSFont systemFontOfSize:fontsize];
    CGSize strSize = [strChar sizeWithAttributes:@{NSFontAttributeName:font}];
    while ((fontsize<127) && (strSize.width<size.width || strSize.height<size.height)) {
        fontsize += 1.0;
        font = [NSFont systemFontOfSize:fontsize];
        strSize = [strChar sizeWithAttributes:@{NSFontAttributeName:font}];
    }
    return [NSFont systemFontOfSize:fontsize-1];
}

static NSData *convertStringsToPDF(NSArray<NSAttributedString *> *strings)
{
    NSMutableData *pdfData = [[NSMutableData alloc] init];
    CGDataConsumerRef consumer = CGDataConsumerCreateWithCFData((CFMutableDataRef)pdfData);

    CFMutableDictionaryRef myDictionary = CFDictionaryCreateMutable(NULL,
                                                                    0,
                                                                    &kCFTypeDictionaryKeyCallBacks,
                                                                    &kCFTypeDictionaryValueCallBacks);
    CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("PDF Reader Pro"));
    
    CGRect mediaBox = CGRectMake(0, 0, 595, 842);
    CGContextRef pdfContext = CGPDFContextCreate(consumer, &mediaBox, myDictionary);
    CGContextSetRGBFillColor(pdfContext, 1.0, 0.0, 0.0, 0.0);
    CGContextSetTextDrawingMode(pdfContext, kCGTextFill);
    
    CFRelease(myDictionary);
    
    for (NSAttributedString *attributeString in strings) {
        if (floor(NSAppKitVersionNumber) >= NSAppKitVersionNumber10_10) {
            NSTextStorage *textStorage = [[NSTextStorage alloc] initWithAttributedString:attributeString];
            NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
            [textStorage addLayoutManager:layoutManager];
            while (YES) {
                NSSize contentSize = NSMakeSize(mediaBox.size.width-40,
                                                mediaBox.size.height-40);
                NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:contentSize];
                [layoutManager addTextContainer:textContainer];
                NSRange rang = [layoutManager glyphRangeForTextContainer:textContainer];
                if (rang.length <= 0 ||
                    rang.length + rang.location > attributeString.length) {
                    break;
                }
                NSAttributedString *attStr = [attributeString attributedSubstringFromRange:rang];
                
                [NSGraphicsContext saveGraphicsState];
//                [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithGraphicsPort:pdfContext flipped:NO]];
                [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithCGContext:pdfContext flipped:NO]];
                CGContextBeginPage(pdfContext, &mediaBox);
                [attStr drawInRect:CGRectMake(20, 20,
                                              mediaBox.size.width-40,
                                              mediaBox.size.height-40)];
                CGContextEndPage(pdfContext);
                [NSGraphicsContext restoreGraphicsState];
            }
        } else {
            [NSGraphicsContext saveGraphicsState];
            [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithCGContext:pdfContext flipped:NO]];
            CGContextBeginPage(pdfContext, &mediaBox);
            [attributeString drawInRect:CGRectMake(20, 20,
                                                   mediaBox.size.width-40,
                                                   mediaBox.size.height-40)];
            CGContextEndPage(pdfContext);
            [NSGraphicsContext restoreGraphicsState];
        }
    }
    
    CGPDFContextClose(pdfContext);
    CGContextRelease (pdfContext);
    
    return pdfData;
}

+ (NSDictionary *)convertExcelToPdfFilePath:(NSString *)filePath savePath:(NSString *)savePath{
    NSString *  convertString = [NSString stringWithFormat:@"set filePath to\"%@\"\n",filePath];
    convertString = [convertString stringByAppendingFormat:@"set savePath to \"%@\"\n",savePath];
    convertString = [convertString stringByAppendingFormat:@"set tFile to (POSIX path of filePath) as POSIX file\n"];
    
    convertString = [convertString stringByAppendingFormat:@"tell application \"Microsoft Excel\"\n"];
    convertString = [convertString stringByAppendingFormat:@"set isRun to running\n"];
    convertString = [convertString stringByAppendingFormat:@"set wkbk1 to open workbook workbook file name tFile\n"];
    convertString = [convertString stringByAppendingFormat:@"alias savePath\n"];
    convertString = [convertString stringByAppendingFormat:@"save workbook as wkbk1 filename savePath file format PDF file format with overwrite\n"];
    convertString = [convertString stringByAppendingFormat:@"close wkbk1 saving no\n"];
    convertString = [convertString stringByAppendingFormat:@"if not isRun then quit\n"];
    convertString = [convertString stringByAppendingFormat:@"end tell\n"];
    
    NSDictionary * dic = nil;
    NSAppleScript *docScript = [[NSAppleScript alloc] initWithSource:convertString];
    [docScript executeAndReturnError:&dic];
    return dic;
}

+ (NSDictionary *)convertOfficeFileToPdf:(NSString *)convertString{
    NSDictionary * dic = nil;
    NSAppleScript *docScript = [[NSAppleScript alloc] initWithSource:convertString];
    [docScript executeAndReturnError:&dic];
    return dic;
}

+ (NSString *)getModificationDate:(NSDate *)modificationDate {
    if (!modificationDate) {
        return nil;
    }
    
    NSTimeZone *timeZone = [NSTimeZone systemTimeZone];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setTimeZone:timeZone];
    [formatter setDateFormat:@"yyyyMMddHHmmssZ"];
    NSString *dateString = [formatter stringFromDate:modificationDate];
    /* 修改date字符串格式为PDF标准格式 */
    NSRange tRange;
    if ([dateString rangeOfString:@"+"].length > 0) {
        tRange = [dateString rangeOfString:@"+"];
    } else if ([dateString rangeOfString:@"-"].length > 0) {
        tRange = [dateString rangeOfString:@"-"];
    } else if ([dateString rangeOfString:@"Z"].length > 0){
        tRange = [dateString rangeOfString:@"Z"];
    }
    NSMutableString *date = [NSMutableString string];
    [date appendFormat:@"D:%@", [dateString substringToIndex:tRange.location]];
    tRange.length = 3;
    [date appendFormat:@"%@", [dateString substringWithRange:tRange]];
    tRange.location += 3;
    [date appendFormat:@"'%@", [dateString substringFromIndex:tRange.location]];
    return  date;
}

@end