Visual_Novel_iOS/crush/Crush/Src/Modules/Chat/Util/SessionUtilOC.m

//
//  SessionUtilOC.m
//  LegendTeam
//
//  Created by 梁博 on 20/12/21.
//

#import "SessionUtilOC.h"

@implementation SessionUtilOC

+ (BOOL)shouldReloadWhenInsert:(NSArray<NSIndexPath *> *)indexPaths tableView:(UITableView *)tableView {
    // 如果插入数据后，中间有空档，则不能直接插入，需要全量重新加载
    NSMutableDictionary * sectionCurrentCount = [NSMutableDictionary dictionary];
    NSMutableDictionary * sectionMaxCount = [NSMutableDictionary dictionary];
    NSMutableDictionary * sectionInsertingCount = [NSMutableDictionary dictionary];
    
    for(NSIndexPath * indexPath in indexPaths)
    {
        NSInteger section = indexPath.section;
        NSInteger count = [tableView numberOfRowsInSection:section];
        sectionCurrentCount[@(section)] = @(count);
    }
    
    for(NSIndexPath * indexPath in indexPaths)
    {
        NSInteger section = indexPath.section;
        NSInteger row = indexPath.row;
        NSInteger count = [sectionCurrentCount[@(section)] integerValue];
        NSInteger sectionMaxNum = [sectionMaxCount[@(section)] integerValue];
        NSInteger max = 0;
        if (row <= count)
        {
            sectionCurrentCount[@(section)] = @(count+1);
            max = count + 1;
        }
        else
        {
            max = row + 1;
        }
        max = MAX(max, sectionMaxNum);
        sectionMaxCount[@(section)] = @(max);
        
        NSInteger sectionCurrentCount = [sectionInsertingCount[@(section)] integerValue];
        sectionInsertingCount[@(section)] = @(++ sectionCurrentCount);
    }
    
    for(NSNumber * sectionKey in sectionMaxCount.allKeys)
    {
        NSInteger maxCount = [sectionMaxCount[sectionKey] integerValue];
        NSInteger currentCount = [sectionInsertingCount[sectionKey] integerValue];
        NSInteger section = [sectionKey integerValue];
        NSInteger count = [tableView numberOfRowsInSection:section];
        if (maxCount > count + currentCount)
        {
            return YES;
        }
    }
    
    return NO;
}


+ (NSArray<NSIndexPath *> *)getIndexPathsWith:(NSArray <NSNumber *>*)indexs {
    NSMutableArray *addIndexPathes = [NSMutableArray array];
    [indexs enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[obj integerValue] inSection:0];
        [addIndexPathes addObject:indexPath];
    }];
    return [addIndexPathes copy];
}

+ (CGSize)sizeWithImageOriginSize:(CGSize)originSize
                              minSize:(CGSize)imageMinSize
                              maxSize:(CGSize)imageMaxSiz{
    
    NSInteger imageWidth = originSize.width ,imageHeight = originSize.height;
    imageWidth = imageWidth == 0 ? 1 : imageWidth;
    imageHeight = imageHeight == 0 ? 1 : imageHeight;
    NSInteger imageMinWidth = imageMinSize.width, imageMinHeight = imageMinSize.height;
    NSInteger imageMaxWidth = imageMaxSiz.width,  imageMaxHeight = imageMaxSiz.height;
    
    CGFloat newWidth = imageWidth;
    CGFloat newHeight = imageHeight;
    
    if (imageWidth > imageHeight) //宽图
    {
        if (imageWidth > imageMaxWidth) {
            // 宽度大于最大宽度时, 取最大宽度    100 * 50    60
            newWidth = imageMaxWidth;
            // 根据宽度比例获取高度
            newHeight = imageHeight * imageMaxWidth / imageWidth;
        } else if (imageWidth < imageMinWidth) {
            // 宽度小于于最小宽度时, 取最小宽度   20 * 10    30
            newWidth = imageMinWidth;
            // 根据宽度比例获取高度
            newHeight = imageHeight * imageMinWidth / imageWidth;
        }
    }
    else if(imageWidth < imageHeight)//高图
    {
        if (imageHeight > imageMaxHeight) {
            // 高度大于最大高度时, 取最大高度   50  * 100    60
            newHeight = imageMaxHeight;
            newWidth = imageWidth * imageMaxHeight / imageHeight;
        } else if (imageHeight < imageMinHeight) {
            // 高度小于最小高度时, 取最大高度   10  * 20    30
            newHeight = imageMinHeight;
            newWidth = imageWidth * imageMinHeight / imageHeight;
        }
    }
    
    
    // 控制宽度最大最小显示逻辑
    if (newWidth > imageMaxWidth) {
        newWidth = imageMaxWidth;
    }
    if (newWidth < imageMinWidth) {
        newWidth = imageMinWidth;
    }
    
    // 控制高度最大最小显示逻辑
    if (newHeight > imageMaxHeight) {
        newHeight = imageMaxHeight;
    }
    if (newHeight < imageMinHeight) {
        newHeight = imageMinHeight;
    }
    
    return CGSizeMake(newWidth, newHeight);
}



+ (NSString*)showTime:(NSTimeInterval)msglastTime showDetail:(BOOL)showDetail {
    //今天的时间
    NSDate *nowDate = [NSDate date];
    NSDate *msgDate = [NSDate dateWithTimeIntervalSince1970:msglastTime];
    NSTimeInterval nowTimeInterval = [nowDate timeIntervalSince1970];

    NSString *result = nil;
    NSCalendarUnit components = (NSCalendarUnit)(NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitWeekday|NSCalendarUnitHour | NSCalendarUnitMinute);
    NSDateComponents *nowDateComponents = [[NSCalendar currentCalendar] components:components fromDate:nowDate];
    NSDateComponents *msgDateComponents = [[NSCalendar currentCalendar] components:components fromDate:msgDate];

    double OnedayTimeIntervalValue = 24*60*60;  //一天的秒数
    //    NSInteger hour = msgDateComponents.hour;
//    if (hour > 12)
//    {
//        hour = hour - 12;
//    }
    BOOL isSameYer = nowDateComponents.year == msgDateComponents.year;
    BOOL isSameMonth =  isSameYer && (nowDateComponents.month == msgDateComponents.month);
    BOOL isSameDay = isSameYer && isSameMonth && (nowDateComponents.day == msgDateComponents.day);
    // 如果要求强制显示AM、需要通过日历控件自己计算
    NSInteger reduceInterval = nowTimeInterval - msglastTime;
    if (showDetail) {
        if (reduceInterval < OnedayTimeIntervalValue) {
            // 24小时内 显示 XX以前
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"h:mm aa"]];
        } else if (isSameMonth && (nowDateComponents.day == (msgDateComponents.day + 1))) {
            // 昨天
            result =[NSString stringWithFormat:@"Yesterday %@", [self stringFromDate:msgDate format:@"h:mm aa"]];
        } else if (isSameYer) {
            // 当年内
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"MMM d, h:mm aa"]];
        } else {
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"MMM d, yyyy h:mm aa"]];
        }
    } else {
        if (isSameDay) {
            // 今天
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"h:mm aa"]];
        } else if (isSameMonth && (nowDateComponents.day == (msgDateComponents.day + 1))) {
            // 昨天
            result =[NSString stringWithFormat:@"Yesterday"];
        }  else if (isSameYer) {
            // 当年内
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"MMM d"]];
        } else {
            result =[NSString stringWithFormat:@"%@", [self stringFromDate:msgDate format:@"MMM d, yyyy"]];
        }
    }
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"hh:mm aa"];
    NSDate *tempDate = [formatter dateFromString:@"16:20"];
    // 24小时制，需要处理一下显示
    if (tempDate && ([result containsString:@"AM"] || [result containsString:@"PM"])) {
        NSString *string1 = [result stringByReplacingOccurrencesOfString:@"AM" withString:@""];
        NSString *string2 = [string1 stringByReplacingOccurrencesOfString:@"PM" withString:@""];
        result = string2;
    }
    return result;
}

+ (NSString *)stringFromDate:(NSDate *)date format:(NSString *)format {
    NSDateFormatter *fomatter = [[NSDateFormatter alloc] init];
    [fomatter setTimeZone:[NSTimeZone localTimeZone]];
    [fomatter setDateFormat:format];
    return [fomatter stringFromDate:date];
}

@end