//
//  RQNewFeatureViewController.m
//  RQCommon
//
//  Created by 张嵘 on 2018/11/23.
//  Copyright © 2018 张嵘. All rights reserved.
//

#import "RQNewFeatureViewController.h"
#import "AppDelegate.h"

@interface RQNewFeatureViewController () <UIScrollViewDelegate>
/// 滚动视图
@property (nonatomic, readwrite, strong) UIScrollView *scrollView;
/// 分页控件
@property (nonatomic, readwrite, strong) UIPageControl *pageControl;
/// 开始按钮
@property (nonatomic, readwrite, strong) UIButton *startButton;
/// 分享微博
@property (nonatomic, readwrite, strong) UIButton *sharedButton;
/// viewModel
@property (nonatomic, readwrite, strong) RQNewFeatureViewModel *viewModel;

@end

@implementation RQNewFeatureViewController

@dynamic viewModel;

- (void)viewDidLoad {
	[super viewDidLoad];
	
	[self setupUI];
}

#pragma mark - 监听方法
/// 点击开始按钮
- (void)clickStartButton {
	
	[[NSNotificationCenter defaultCenter] postNotificationName:RQSwitchRootViewControllerNotification object:nil userInfo:@{RQSwitchRootViewControllerUserInfoKey:@(RQSwitchRootViewControllerFromTypeNewFeature)}];
}

- (void)clickSharedButton {
	self.sharedButton.selected = !self.sharedButton.selected;
}

#pragma mark - UIScrollViewDelegate
/// UIScrollView 停止滚动
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
	// 当前页数
	self.pageControl.currentPage = scrollView.contentOffset.x / scrollView.bounds.size.width;
}

#pragma mark - 设置界面
- (void)setupUI {
	[self _prepareScrollView];
	[self _preparePageControl];
	[self _prepareLastPage];
}

/// 准备最后一页控件
- (void)_prepareLastPage {
	
	UIImageView *imageView = self.scrollView.subviews.lastObject;
	
	imageView.userInteractionEnabled = YES;
	
	[imageView addSubview:self.startButton];
	[imageView addSubview:self.sharedButton];
	
	[self.startButton mas_makeConstraints:^(MASConstraintMaker *make) {
		make.centerX.equalTo(imageView);
		make.bottom.mas_equalTo(-140);
	}];
	
	[self.sharedButton mas_makeConstraints:^(MASConstraintMaker *make) {
		make.centerX.equalTo(self.startButton);
		make.bottom.mas_equalTo(self.startButton.mas_top).offset(-20);
	}];
}

/// 准备分页控件
- (void)_preparePageControl {
	[self.view addSubview:self.pageControl];
	
	self.pageControl.numberOfPages = 4;
	self.pageControl.currentPage = 0;
	
	[self.pageControl mas_makeConstraints:^(MASConstraintMaker *make) {
		make.centerX.equalTo(self.view);
		make.bottom.equalTo(self.view).offset(-80);
	}];
}

/// 准备 UIScrollView
- (void)_prepareScrollView {
	[self.view addSubview:self.scrollView];
	
	self.scrollView.frame = self.view.bounds;
	
	// 添加图像视图
	for (int i = 0; i < 4; ++i) {
		UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"new_feature_%d", i + 1]];
		UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
		
		// 设置大小
		imageView.frame = CGRectOffset(self.view.bounds, i * self.view.bounds.size.width, 0);
		
		[self.scrollView addSubview:imageView];
	}
	
	// 设置 contentSize
	self.scrollView.contentSize = CGRectInset(self.view.bounds, -1.5 * self.view.bounds.size.width, 0).size;
	
	/// 适配 iOS11
	RQAdjustsScrollViewInsets_Never(self.scrollView);
}

#pragma mark - 懒加载控件
- (UIScrollView *)scrollView {
	if (_scrollView == nil) {
		_scrollView = [[UIScrollView alloc] init];
		
		_scrollView.showsHorizontalScrollIndicator = NO;
		_scrollView.showsVerticalScrollIndicator = NO;
		_scrollView.bounces = NO;
		_scrollView.pagingEnabled = YES;
		
		_scrollView.delegate = self;
	}
	return _scrollView;
}

- (UIPageControl *)pageControl {
	if (_pageControl == nil) {
		_pageControl = [[UIPageControl alloc] init];
		
		_pageControl.pageIndicatorTintColor = [UIColor blackColor];
		_pageControl.currentPageIndicatorTintColor = [UIColor orangeColor];
		
		// 提示：需要禁止用户交互，否则用户点击小圆点，会移动，但是页面不会变化
		_pageControl.userInteractionEnabled = NO;
	}
	return _pageControl;
}

- (UIButton *)startButton {
	if (_startButton == nil) {
		_startButton = [UIButton buttonWithType:UIButtonTypeCustom];
		[_startButton setTitle:@"进入主页" forState:UIControlStateNormal];
		[_startButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
		[_startButton setBackgroundImage:RQImageNamed(@"new_feature_finish_button") forState:UIControlStateNormal];
		[_startButton addTarget:self action:@selector(clickStartButton) forControlEvents:UIControlEventTouchUpInside];
	}
	return _startButton;
}

- (UIButton *)sharedButton {
	if (_sharedButton == nil) {
		_sharedButton = [[UIButton alloc] init];
		[_sharedButton setTitle:@" 分享到微博" forState:UIControlStateNormal];
		[_sharedButton setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal];
		
		[_sharedButton setImage:[UIImage imageNamed:@"new_feature_share_false"] forState:UIControlStateNormal];
		[_sharedButton setImage:[UIImage imageNamed:@"new_feature_share_true"] forState:UIControlStateSelected];
		
		[_sharedButton sizeToFit];
		
		[_sharedButton addTarget:self action:@selector(clickSharedButton) forControlEvents:UIControlEventTouchUpInside];
	}
	return _sharedButton;
}
@end