//
//  ViewController.m
//  FMC Planner 2
//
//  Created by Kilian Hofmann on 19.03.16.
//  Copyright © 2016 Kilian Hofmann. All rights reserved.
//

#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  _alphaOn = true;
  _alphabet = [[NSArray alloc]
      initWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I",
                      @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R",
                      @"S", @"T", @"U", @"V", @"W", @"X", @"Y", @"Z", @"SP",
                      @"CLR", @"DEL", @"NUM", nil];
  _numeric = [[NSArray alloc]
      initWithObjects:@"1", @"2", @"3", @"", @"", @"", @"4", @"5", @"6",
                      @"", @"", @"", @"7", @"8", @"9", @"", @"", @"",
                      @".", @"0", @"/", @"", @"", @"", @"", @"", @"SP",
                      @"CLR", @"DEL", @"LET", nil];

  // Round corners
  _backdropKeys.layer.cornerRadius = 5;
  _backdropKeys.layer.masksToBounds = YES;
  _backdropScreen.layer.cornerRadius = 5;
  _backdropScreen.layer.masksToBounds = YES;
  for (UIButton *but in _Keys) {
    but.layer.cornerRadius = 5;
    but.layer.masksToBounds = YES;
  }
  // Set Font Size
  if (self.view.frame.size.height == 480) {
    for (UILabel *label in _ScreenLabels) {
      label.font = [UIFont systemFontOfSize:14];
    }
    _Header.font = [UIFont systemFontOfSize:14];
    _Scratchpad.font = [UIFont systemFontOfSize:14];
  }

  // Init Start Page
  [self clearScreen];
  _Header.text = @"START";
  _Scratchpad.text = @"";
}

- (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}

- (IBAction)KeyTaps:(UIButton *)sender {
  if ([sender.restorationIdentifier isEqualToString:@"Switch"]) {
    _alphaOn = !_alphaOn;
    [self switchKeyboard];
  } else if ([sender.restorationIdentifier isEqualToString:@"Space"]) {
    _Scratchpad.text = [_Scratchpad.text stringByAppendingString:@" "];
  } else if ([sender.restorationIdentifier isEqualToString:@"Clear"]) {
    if ([_Scratchpad.text isEqualToString:@"DELETE"]) {
      _Scratchpad.text = @"";
    } else if (_Scratchpad.text.length > 0) {
      _Scratchpad.text =
          [_Scratchpad.text substringToIndex:[_Scratchpad.text length] - 1];
    }
  } else if ([sender.restorationIdentifier isEqualToString:@"Delete"]) {
    _Scratchpad.text = @"DELETE";
  } else {
    _Scratchpad.text =
        [_Scratchpad.text stringByAppendingString:sender.titleLabel.text];
  }
}

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

- (void)switchKeyboard {
  if (_alphaOn) {
    for (int i = 0; i < _Keys.count; i++) {
      [((UIButton *)_Keys[i]) setTitle:_alphabet[i]
                              forState:UIControlStateNormal];
      [((UIButton *)_Keys[i]).titleLabel sizeToFit];
    }
  } else {
    for (int i = 0; i < _Keys.count; i++) {
      [((UIButton *)_Keys[i]) setTitle:_numeric[i]
                              forState:UIControlStateNormal];
      [((UIButton *)_Keys[i]).titleLabel sizeToFit];
    }
  }
}

@end