//
//  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
    for (UILabel *label in _LSK) {
        label.adjustsFontSizeToFitWidth = YES;
        UITapGestureRecognizer *reg = [[UITapGestureRecognizer alloc]
            initWithTarget:self
                    action:@selector(enterLSK:)];
        reg.numberOfTapsRequired = 1;
        reg.numberOfTouchesRequired = 1;
        [label addGestureRecognizer:reg];
    }
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:YES];
    [self loadScreen:@"MENU"];
}

- (void)viewDidLayoutSubviews {
    _FrameHeight.constant = self.view.frame.size.height / 14.5;
    // Size and LineBreak

    _Header.font = [self findAdaptiveFontForUILabelSize:_Header.frame.size
                                        withMinimumSize:5
                                                withMod:0.7];
    _Header.adjustsFontSizeToFitWidth = YES;
    _Scratchpad.font =
        [self findAdaptiveFontForUILabelSize:_Scratchpad.frame.size
                             withMinimumSize:5
                                     withMod:0.7];
    _Scratchpad.adjustsFontSizeToFitWidth = YES;
    for (UILabel *label in _LSK) {
        label.font = [self findAdaptiveFontForUILabelSize:_Header.frame.size
                                          withMinimumSize:5
                                                  withMod:0.6];
    }
}

- (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
                                   withMod:(float)mod {
    UIFont *tempFont = nil;
    NSString *testString =
        @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

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

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

- (void)loadScreen:(NSString *)screenName {
    _Header.text = screenName;
    NSArray *screen =
        [[NSArray alloc] initWithContentsOfFile:[[NSBundle mainBundle]
                                                    pathForResource:screenName
                                                             ofType:@"plist"]];
    for (int i = 0; i < _Desc.count; i++) {
        ((UILabel *)_Desc[i]).text =
            [NSString stringWithFormat:@"%@\n", screen[i]];
        if (![screen[i] isEqualToString:@""] ||
            [_Header.text isEqualToString:@"ROUTE"]) {
            ((UILabel *)_LSK[i]).userInteractionEnabled = YES;
        }
    }
}

@end