klx_teacher/KulexiuForTeacher/KulexiuForTeacher/Module/Course/Controller/CourseViewController.m

//
//  CourseViewController.m
//  KulexiuForTeacher
//
//  Created by Kyle on 2022/3/17.
//

#import "CourseViewController.h"
#import "FSCalendar.h"
#import "CourseNavView.h"
#import "LTSCalendarBottomView.h"
#import "KSFullDatePicker.h"
#import "AccompanyCourseCell.h"
#import "LiveCourseCell.h"

@interface CourseViewController ()<UITableViewDataSource,UITableViewDelegate,FSCalendarDataSource,FSCalendarDelegate,UIGestureRecognizerDelegate>
{
    void * _KVOContext;
}
@property (nonatomic, strong) CourseNavView *navHeadView;

@property (nonatomic, strong) NSString *chooseMonth;

@property (nonatomic, strong) NSString *chooseDay;

@property (nonatomic,strong) FSCalendar *calendar;

@property (strong, nonatomic) NSCalendar *gregorian;

@property (nonatomic, strong) UITableView *tableView;

@property (strong, nonatomic) UIPanGestureRecognizer *scopeGesture;

@property (strong, nonatomic) NSDateFormatter *dateFormatter;

@property (nonatomic, strong) LTSCalendarBottomView *calendarBottom;

@property (nonatomic, assign) BOOL cancleRequest;

@end

@implementation CourseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.ks_prefersNavigationBarHidden = YES;
    [self configUI];
    [self loadCalendarInfo];
}

- (void)loadCalendarInfo {
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.timeZone = [NSTimeZone systemTimeZone];
    [formatter setDateFormat:@"yyyy-MM"];
    NSDate *date = [NSDate date];
    self.chooseMonth = [formatter stringFromDate:date];
    self.chooseDay = [NSString stringWithFormat:@"%@ 00:00:00", [formatter stringFromDate:date]];
    [self.calendar selectDate:date];
    [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    [self loadMonthCourse:self.chooseMonth];
    if (![NSString isEmptyString:self.chooseDay]) {
        [self getCourseByDate:self.chooseDay];
    }
}

- (void)configUI {
    [self.view addSubview:self.navHeadView];
    [self.navHeadView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.top.mas_equalTo(self.view);
        make.height.mas_equalTo(kNaviBarHeight);
    }];
    
    [self.scrollView mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(self.view);
        make.top.mas_equalTo(self.navHeadView.mas_bottom);
        make.bottom.mas_equalTo(self.view.mas_bottom);
    }];
    
    UIView *containerView = [[UIView alloc] initWithFrame:CGRectZero];
    containerView.backgroundColor = [UIColor clearColor];
    [self.scrollView addSubview:containerView];
    [containerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.mas_equalTo(self.scrollView);
        make.width.mas_equalTo(self.scrollView);
    }];
    
    self.calendar = [[FSCalendar alloc] init];
    [self configCalendar];
    [containerView addSubview:self.calendar];
    [self.calendar mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(containerView);
        make.top.mas_equalTo(containerView.mas_top);
        make.height.mas_equalTo(300);
    }];
    self.calendarBottom = [LTSCalendarBottomView shareInstance];
    MJWeakSelf;
    [self.calendarBottom changeDisplay:^{
        [weakSelf changeDisplay];
    }];
    [containerView addSubview:self.calendarBottom];
    [self.calendarBottom mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(containerView);
        make.top.mas_equalTo(self.calendar.mas_bottom);
        make.height.mas_equalTo(40);
    }];
    
    [containerView addSubview:self.tableView];
    CGFloat tableHeight = kScreenHeight - kNaviBarHeight - kTabBarHeight - 300 - 40;
    [self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(self.view);
        make.top.mas_equalTo(self.calendarBottom.mas_bottom);
        make.height.mas_equalTo(tableHeight);
    }];
    [containerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.bottom.mas_equalTo(self.tableView.mas_bottom);
    }];
    
    UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self.calendar action:@selector(handleScopeGesture:)];
    panGesture.delegate = self;
    panGesture.minimumNumberOfTouches = 1;
    panGesture.maximumNumberOfTouches = 2;
    [self.scrollView addGestureRecognizer:panGesture];
    self.scopeGesture = panGesture;
    [self.tableView.panGestureRecognizer requireGestureRecognizerToFail:panGesture];
    self.scrollView.mj_header = [KSGifRefreshHeader headerWithRefreshingBlock:^{
        [weakSelf.calendar setToday:[NSDate date]];
        [weakSelf loadMonthCourse:weakSelf.chooseMonth];
        if (![NSString isEmptyString:weakSelf.chooseDay]) {
            [weakSelf getCourseByDate:weakSelf.chooseDay];
        }
    }];
    if (@available(iOS 11.0, *)) {
        self.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    } else {
        // Fallback on earlier versions
        self.automaticallyAdjustsScrollViewInsets = NO;
    }
}

- (void)endRefresh {
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self.scrollView.mj_header endRefreshing];
    });
}


#pragma mark ---- calender action



// 收起或展开日历
- (void)changeDisplay {
    FSCalendarScope selectedScope = self.calendar.scope ==  FSCalendarScopeMonth ?  FSCalendarScopeWeek : FSCalendarScopeMonth;
    [self.calendar setScope:selectedScope animated:YES];
    NSString *imgName = selectedScope == FSCalendarScopeWeek ? @"arrow_down" : @"arrow_up";
    [self.calendarBottom.arrowImage setImage:[UIImage imageNamed:imgName]];
#warning ---- 测试有课日期
    self.calendar.highlightDates = [NSMutableArray arrayWithArray:@[@"2022-04-12 00:00:00",@"2022-04-15 00:00:00"]];
    [self.calendar reloadData];
}

- (void)configCalendar {
    self.calendar.backgroundColor = [UIColor whiteColor];
    self.calendar.appearance.titleFont = [UIFont systemFontOfSize:14.0f weight:UIFontWeightMedium];
    self.calendar.appearance.titleDefaultColor = HexRGB(0x444444);
    self.calendar.appearance.titleTodayColor = HexRGB(0x444444);
    self.calendar.appearance.titleSelectionColor = [UIColor whiteColor];
    self.calendar.appearance.selectionColor = THEMECOLOR;
    self.calendar.appearance.weekdayFont = [UIFont systemFontOfSize:14.0f];
    self.calendar.appearance.weekdayTextColor = HexRGB(0x777777);
    self.calendar.appearance.titleWeekendColor = THEMECOLOR;
    self.calendar.appearance.todaySelectionColor = THEMECOLOR;
    self.calendar.appearance.todayColor = [UIColor whiteColor];
    self.calendar.appearance.todayBorderColor = [UIColor whiteColor];
    self.calendar.appearance.borderRadius = 0.2f;
    self.calendar.appearance.borderDefaultColor = [UIColor whiteColor];
    self.calendar.appearance.titleHightlightColor = HexRGB(0x444444);
    self.calendar.appearance.backgoundHightlightColor = HexRGBAlpha(0xffd7a6, 0.21);
    self.calendar.appearance.subtitleFont = [UIFont systemFontOfSize:10.0f];
    self.calendar.appearance.subtitleOffset = CGPointMake(0, 3);
    self.calendar.appearance.subtitleTodayColor = HexRGB(0xff6363);
    self.calendar.appearance.subtitleDefaultColor = HexRGB(0xff6363);
    self.calendar.appearance.subtitleSelectionColor = [UIColor whiteColor];
    self.calendar.dataSource = self;
    self.calendar.delegate = self;
//    self.calendar.firstWeekday = 2;
    self.calendar.appearance.caseOptions = FSCalendarCaseOptionsWeekdayUsesSingleUpperCase|FSCalendarCaseOptionsHeaderUsesUpperCase;
    self.calendar.calendarHeaderView.hidden = YES;
    self.calendar.locale = [NSLocale localeWithLocaleIdentifier:@"zh_CN"];
    [self.calendar addObserver:self forKeyPath:@"scope" options:NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld context:_KVOContext];
    self.calendar.placeholderType = FSCalendarPlaceholderTypeNone;
    self.calendar.scope = FSCalendarScopeMonth;
    [self.calendar selectDate:[NSDate date] scrollToDate:YES];
}
#pragma mark - FSCalendarDataSource
- (NSString *)calendar:(FSCalendar *)calendar subtitleForDate:(NSDate *)date {
    // 判断有课的日期显示subtitle
    if ([calendar.highlightDates containsObject:date]) {
        return @"有课";
    }
    return nil;
    
    
}

#pragma mark - FSCalendarDelegate
- (void)calendar:(FSCalendar *)calendar boundingRectWillChange:(CGRect)bounds animated:(BOOL)animated
{
    [calendar mas_updateConstraints:^(MASConstraintMaker *make) {
        make.height.mas_equalTo(bounds.size.height);
        // Do other updates
    }];
    [self.tableView mas_updateConstraints:^(MASConstraintMaker *make) {
        make.height.mas_equalTo(kScreenHeight - kTabBarHeight - bounds.size.height - kNaviBarHeight - 40);
    }];
    [self.view layoutIfNeeded];
}
- (void)calendar:(FSCalendar *)calendar didSelectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition
{
    NSLog(@"did select date %@",[self.dateFormatter stringFromDate:date]);
    
    NSMutableArray *selectedDates = [NSMutableArray arrayWithCapacity:calendar.selectedDates.count];
    [calendar.selectedDates enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        [selectedDates addObject:[self.dateFormatter stringFromDate:obj]];
    }];
    self.navHeadView.navTitle.text = [self.dateFormatter stringFromDate:date];
    NSLog(@"selected dates is %@",selectedDates);
    if (monthPosition == FSCalendarMonthPositionNext || monthPosition == FSCalendarMonthPositionPrevious) {
        [calendar setCurrentPage:date animated:YES];
    }
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.timeZone = [NSTimeZone systemTimeZone];
    [formatter setDateFormat:@"yyyy-MM-dd"];
    NSString *dateStr = [formatter stringFromDate:date];
    dateStr = [NSString stringWithFormat:@"%@ 00:00:00", dateStr];
    self.chooseDay = dateStr;
    [self getCourseByDate:dateStr];
}



- (void)calendarCurrentPageDidChange:(FSCalendar *)calendar
{
    self.navHeadView.navTitle.text = [self.dateFormatter stringFromDate:calendar.currentPage];
    NSLog(@"%s %@", __FUNCTION__, [self.dateFormatter stringFromDate:calendar.currentPage]);
    // 获取当前月份信息
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.timeZone = [NSTimeZone systemTimeZone];
    [formatter setDateFormat:@"yyyy-MM"];
    NSString *month = [formatter stringFromDate:calendar.currentPage];
    if (![_chooseMonth isEqualToString:month]) {
        _chooseMonth = month;
        [self loadMonthCourse:month];
    }
    [formatter setDateFormat:@"yyyy-MM-dd"];
    NSString *chooseDay = [formatter stringFromDate:calendar.currentPage];
    self.chooseDay = chooseDay;
    [self.calendar selectDate:calendar.currentPage];
    [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    NSString *currentDate = [formatter stringFromDate:calendar.currentPage];
    [self getCourseByDate:currentDate];
}

#pragma mark --- 获取当前月份有课日期
- (void)loadMonthCourse:(NSString *)month {
    
}

#pragma mark --- 获取当日课程
- (void)getCourseByDate:(NSString *)date {
    
}

#pragma mark - <UIGestureRecognizerDelegate>

// Whether scope gesture should begin
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    BOOL shouldBegin = self.tableView.contentOffset.y <= -self.tableView.contentInset.top;
    if (shouldBegin) {
        CGPoint velocity = [self.scopeGesture velocityInView:self.view];
        switch (self.calendar.scope) {
            case FSCalendarScopeMonth:
                return velocity.y < 0;
            case FSCalendarScopeWeek:
                return velocity.y > 0;
        }
    }
    return shouldBegin;
}

#pragma mark - KVO

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context
{
    if (context == _KVOContext) {
        FSCalendarScope oldScope = [change[NSKeyValueChangeOldKey] unsignedIntegerValue];
        FSCalendarScope newScope = [change[NSKeyValueChangeNewKey] unsignedIntegerValue];
        NSLog(@"From %@ to %@",(oldScope==FSCalendarScopeWeek?@"week":@"month"),(newScope==FSCalendarScopeWeek?@"week":@"month"));
    } else {
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}

#pragma mark --- table data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return  self.dataArray.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    AccompanyCourseCell *cell = [tableView dequeueReusableCellWithIdentifier:@"AccompanyCourseCell"];
    return cell;
}

#pragma mark --- lazying

- (CourseNavView *)navHeadView {
    if (!_navHeadView) {
        _navHeadView = [CourseNavView shareInstance];
        MJWeakSelf;
        [_navHeadView chooseNavCallback:^{
            [weakSelf displayMounthPicker];
        }];
        
    }
    return _navHeadView;
}

- (void)displayMounthPicker {
    
}
- (NSDateFormatter *)dateFormatter {
    if (!_dateFormatter) {
       _dateFormatter = [[NSDateFormatter alloc] init];
        _dateFormatter.timeZone = [NSTimeZone systemTimeZone];
        _dateFormatter.dateFormat = @"yyyy年MM月";
    }
    return _dateFormatter;
}
- (UITableView *)tableView {
    if (!_tableView) {
        _tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
        _tableView.delegate = self;
        _tableView.dataSource = self;
        _tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
        _tableView.backgroundColor = [UIColor clearColor];
        _tableView.showsVerticalScrollIndicator = NO;
        _tableView.showsHorizontalScrollIndicator = NO;
        _tableView.rowHeight = UITableViewAutomaticDimension;
        _tableView.estimatedRowHeight = 130;
        [_tableView registerNib:[UINib nibWithNibName:@"AccompanyCourseCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:@"AccompanyCourseCell"];
        [_tableView registerNib:[UINib nibWithNibName:@"LiveCourseCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:@"LiveCourseCell"];
        UIView *bottomView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, 15)];
        bottomView.backgroundColor = [UIColor clearColor];
        _tableView.tableFooterView = bottomView;
        
    }
    return _tableView;
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end