//
//  ViewControllerScreen.m
//  FMC Planner 2
//
//  Created by Kilian Hofmann on 20.03.16.
//  Copyright © 2016 Kilian Hofmann. All rights reserved.
//

#import "ViewControllerScreen.h"

@implementation ViewControllerScreen

- (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view.
  // Init Start Page
  [self clearScreen];
  _Header.text = @"START";
  _Scratchpad.text = @"";

  // Tap gesture shit and fitToSize
  for (UILabel *label in _LSK) {
    label.font = [self findAdaptiveFontForUILabelSize:label.frame.size
                                      withMinimumSize:21];
    label.adjustsFontSizeToFitWidth = YES;
    label.userInteractionEnabled = YES;
    UITapGestureRecognizer *reg =
        [[UITapGestureRecognizer alloc] initWithTarget:self
                                                action:@selector(enterLSK:)];
    [reg setNumberOfTapsRequired:1];
    [reg setNumberOfTouchesRequired:1];
    [label addGestureRecognizer:reg];
  }
  _Header.font = [self findAdaptiveFontForUILabelSize:_Header.frame.size
                                      withMinimumSize:21];
  _Header.adjustsFontSizeToFitWidth = YES;
  _Scratchpad.font = [self findAdaptiveFontForUILabelSize:_Scratchpad.frame.size
                                          withMinimumSize:21];
  _Scratchpad.adjustsFontSizeToFitWidth = YES;
}

- (void)clearScreen {
  for (UILabel *label in _LSK) {
    label.text = @"";
  }
  _Scratchpad.text = @"";
  _Header.text = @"";
}

- (void)enterLSK:(UITapGestureRecognizer *)tapReg {
  if ([_Scratchpad.text isEqualToString:@"DELETE"]) {
    ((UILabel *)tapReg.view).text = @"";
  } else {
    ((UILabel *)tapReg.view).text = _Scratchpad.text;
  }
  _Scratchpad.text = @"";
}

- (UIFont *)findAdaptiveFontForUILabelSize:(CGSize)labelSize
                           withMinimumSize:(NSInteger)minSize {
  UIFont *tempFont = nil;
  NSString *testString =
      @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

  NSInteger tempMin = minSize;
  NSInteger tempMax = 256;
  NSInteger mid = 0;
  NSInteger difference = 0;

  while (tempMin <= tempMax) {
    mid = tempMin + (tempMax - tempMin) / 2;
    tempFont = [UIFont systemFontOfSize:mid];
    difference = labelSize.height - [testString sizeWithFont:tempFont].height;

    if (mid == tempMin || mid == tempMax) {
      if (difference < 0) {
        return [UIFont systemFontOfSize:(mid - 1)];
      }

      return [UIFont systemFontOfSize:mid];
    }

    if (difference < 0) {
      tempMax = mid - 1;
    } else if (difference > 0) {
      tempMin = mid + 1;
    } else {
      return [UIFont systemFontOfSize:mid];
    }
  }

  return [UIFont systemFontOfSize:mid];
}

@end