//
//  SiteCell.m
//  NewsBlur
//
//  Created by Roy Yang on 8/14/12.
//  Copyright (c) 2012 NewsBlur. All rights reserved.
//

#import "NewsBlurAppDelegate.h"
#import "SiteCell.h"
#import "ABTableViewCell.h"
#import "UIView+TKCategory.h"
#import "Utilities.h"
#import "NewsBlur-Swift.h"

static UIFont *textFont = nil;
static UIFont *indicatorFont = nil;


@implementation SiteCell

@synthesize siteTitle;
@synthesize siteFavicon;
@synthesize feedColorBar;
@synthesize feedColorBarTopBorder;
@synthesize hasAlpha;
@synthesize isRead;

#define leftMargin 18
#define rightMargin 18

+ (void) initialize {
    if (self == [SiteCell class]) {
        textFont = [UIFont boldSystemFontOfSize:18];
        indicatorFont = [UIFont boldSystemFontOfSize:12];
    }
}

- (void)drawContentView:(CGRect)r highlighted:(BOOL)highlighted {    
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    CGRect rect = CGRectInset(r, 12, 12);
    rect.size.width -= 18; // Scrollbar padding
    
    // set the background color
    UIColor *backgroundColor = UIColorFromRGB(0xf4f4f4);
    [backgroundColor set];
    
    CGContextFillRect(context, r);
    
    if (!self.isRead) {
        CGContextSetAlpha(context, 1);
    } else {
        CGContextSetAlpha(context, 0.5);
    }
    // set site title
    UIColor *textColor;
    UIFont *font;
    
    font = [UIFont fontWithName:@"WhitneySSm-Medium" size:12];
    textColor = UIColorFromRGB(0x606060);

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle defaultParagraphStyle] mutableCopy];
    paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
    paragraphStyle.alignment = NSTextAlignmentLeft;
    [self.siteTitle drawInRect:CGRectMake(leftMargin + 20, 6, rect.size.width - 20, 21)
                withAttributes:@{NSFontAttributeName: font,
                                 NSForegroundColorAttributeName: textColor,
                                 NSParagraphStyleAttributeName: paragraphStyle}];
    
    // feed bar
    CGContextSetStrokeColor(context, CGColorGetComponents([self.feedColorBar CGColor])); //feedColorBarTopBorder
    CGContextSetLineWidth(context, 6.0f);
    CGContextBeginPath(context);
    CGContextMoveToPoint(context, 3.0f, 1.0f);
    CGContextAddLineToPoint(context, 3.0f, self.frame.size.height);
    CGContextStrokePath(context);
    
    CGContextSetStrokeColor(context, CGColorGetComponents([self.feedColorBar CGColor])); //feedColorBarTopBorder
    CGContextSetLineWidth(context, 6.0f);
    CGContextBeginPath(context);
    float width = self.bounds.size.width - 3.0f;
    CGContextMoveToPoint(context, width, 1.0f);
    CGContextAddLineToPoint(context, width, self.frame.size.height);
    CGContextStrokePath(context);
    
    // site favicon
    if (self.isRead && self.siteFavicon != nil) {
        self.siteFavicon = [self imageByApplyingAlpha:self.siteFavicon withAlpha:0.25];
    } 
    
    [self.siteFavicon drawInRect:CGRectMake(leftMargin, 5.0, 16.0, 16.0)];
}

- (UIImage *)imageByApplyingAlpha:(UIImage *)image withAlpha:(CGFloat) alpha {
    UIGraphicsBeginImageContextWithOptions(image.size, NO, 0.0f);
    
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    CGRect area = CGRectMake(0, 0, image.size.width, image.size.height);
    
    CGContextScaleCTM(ctx, 1, -1);
    CGContextTranslateCTM(ctx, 0, -area.size.height);
    
    CGContextSetBlendMode(ctx, kCGBlendModeMultiply);
    
    CGContextSetAlpha(ctx, alpha);
    
    CGContextDrawImage(ctx, area, image.CGImage);
    
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    return newImage;
}


@end