#import "HMViewController.h"

#import "HMQuestion.h"

#define kButtonWidth    35

#define kButtonHeight   35

#define kButtonMargin   10

#define kTotolCol       7

@interface HMViewController ()

@property (weak, nonatomic) IBOutlet UIButton *iconButton;

@property (weak, nonatomic) IBOutlet UILabel *noLabel;

@property (weak, nonatomic) IBOutlet UILabel *titleLabel;

@property (weak, nonatomic) IBOutlet UIButton *nextQuestionButton;

@property (weak, nonatomic) IBOutlet UIView *answerView;//答案框

@property (weak, nonatomic) IBOutlet UIView *optionsView;//选择框

@property (nonatomic, strong) NSArray *questions;  //数据

/** 题目索引 */

@property (nonatomic, assign) int index;

@end

@implementation HMViewController

- (NSArray *)questions

{

    if (_questions == nil) {

        _questions = [HMQuestion questions];

    }

    return _questions;

}

- (UIButton *)cover

{

    if (_cover == nil) {

        _cover = [[UIButton alloc] initWithFrame:self.view.bounds];

        _cover.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.5];

        [self.view addSubview:_cover];

        _cover.alpha = 0.0;

        [_cover addTarget:self action:@selector(bigImage) forControlEvents:UIControlEventTouchUpInside];

    }

    return _cover;

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    self.index = -;

    [self nextQuestion];

}

/** 调整状态栏颜色 */

/**

 UIStatusBarStyleDefault      黑色状态栏

 UIStatusBarStyleLightContent 亮色状态栏

 */

- (UIStatusBarStyle)preferredStatusBarStyle

{

    return UIStatusBarStyleLightContent;

}

#pragma mark - 下一题

- (IBAction)nextQuestion

{

    // 1. 当前答题的索引，索引递增

    self.index++;

    // 2. 从数组中按照索引取出题目模型数据

    HMQuestion *question = self.questions[self.index];

    // 3. 设置基本信息

    self.noLabel.text = [NSString stringWithFormat:@"%d/%d", self.index + , self.questions.count];

    self.titleLabel.text = question.title;

    [self.iconButton setImage:[UIImage imageNamed:question.icon] forState:UIControlStateNormal];

    // 如果到达最后一题，禁用下一题按钮

    self.nextQuestionButton.enabled = (self.index < self.questions.count - );

    // 4. 设置答案按钮

    // 首先清除掉答题区内的所有按钮

    // 所有的控件都继承自UIView，多态的应用

    for (UIView *btn in self.answerView.subviews) {

        [btn removeFromSuperview];

    }

    CGFloat answerW = self.answerView.bounds.size.width;

    int length = question.answer.length;

    CGFloat answerX = (answerW - kButtonWidth * length - kButtonMargin * (length - )) * 0.5;

    // 创建所有答案的按钮

    for (int i = ; i < length; i++) {

        CGFloat x = answerX + i * (kButtonMargin + kButtonWidth);

        UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(x, , kButtonWidth, kButtonHeight)];

        [btn setBackgroundImage:[UIImage imageNamed:@"btn_answer"] forState:UIControlStateNormal];

        [btn setBackgroundImage:[UIImage imageNamed:@"btn_answer_highlighted"] forState:UIControlStateHighlighted];

        [self.answerView addSubview:btn];

    }

    // 5. 设置备选按钮

    for (UIView *view in self.optionsView.subviews) {

        [view removeFromSuperview];

    }

    CGFloat optionW = self.optionsView.bounds.size.width;

    CGFloat optionX = (optionW - kTotolCol * kButtonWidth - (kTotolCol - ) * kButtonMargin) * 0.5;

    for (int i = ; i < question.options.count; i++) {

        int row = i / kTotolCol;

        int col = i % kTotolCol;

        CGFloat x = optionX + col * (kButtonMargin + kButtonWidth);

        CGFloat y = row * (kButtonMargin + kButtonHeight);

        UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(x, y, kButtonWidth, kButtonHeight)];

        [btn setBackgroundImage:[UIImage imageNamed:@"btn_option"] forState:UIControlStateNormal];

        [btn setBackgroundImage:[UIImage imageNamed:@"btn_option_highlighted"] forState:UIControlStateHighlighted];

        // 设置备选答案

        [btn setTitle:question.options[i] forState:UIControlStateNormal];

        [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

        [self.optionsView addSubview:btn];

    }

    NSLog(@"%d", self.optionsView.subviews.count);

}

@end