yinmeng-ios/xplan-ios/Main/Room/View/MessageContainerView/Tool/XPRoomMessageParser.m

//
//  XPRoomMessageParser.m
//  xplan-ios
//
//  Created by 冯硕 on 2021/10/26.
//

#import "XPRoomMessageParser.h"
#import <YYText/YYText.h>
#import <NIMSDK/NIMSDK.h>
///Tool
#import "ThemeColor+Room.h"
#import "XPRoomMessageConstant.h"
#import "AccountInfoStorage.h"
#import "XPMacro.h"
///Model
#import "XPMessageRemoteExtModel.h"

#import "NetImageView.h"

@implementation XPRoomMessageParser

+ (NSAttributedString*)parseMessageAttribute:(NIMMessage *)message {
    NIMMessageType messageType = message.messageType;
    switch (messageType) {
        case NIMMessageTypeText:
            return [self makeChatAttribute:message];
            
        case NIMMessageTypeTip:
            return [self makeTipsAttribute:message];
            
        case NIMMessageTypeNotification:
            return [self makeNotificationAttribute:message];
        default:
            return nil;
    }
}

/// 用户公屏聊天
/// @param message 消息的实体
+ (NSAttributedString*)makeChatAttribute:(NIMMessage *)message{
    NSString * uid = [AccountInfoStorage instance].getUid;
    XPMessageRemoteExtModel * model = [XPMessageRemoteExtModel modelWithJSON:message.remoteExt[message.from]];
    NSString * nick = [NSString stringWithFormat:@"%@:", ((NIMMessageChatroomExtension *)message.messageExt).roomNickname];
    if ([message.from isEqualToString:uid]) {
        nick = @"我:";
    }
    
    NSMutableAttributedString * attribute = [[NSMutableAttributedString alloc] init];
    if (model.defUser == UserLevelType_Offical) {
        NSMutableAttributedString * offcialAttribute = [self createLocalImageAttribute:@"common_offical"];
        [attribute appendAttributedString:offcialAttribute];
        [attribute appendAttributedString:[self createSapceAttribute:2]];
    }
    
    if (model.newUser) {
        NSMutableAttributedString * newUserAttribute = [self createLocalImageAttribute:@"common_new_user"];
        [attribute appendAttributedString:newUserAttribute];
        [attribute appendAttributedString:[self createSapceAttribute:2]];
    }
    
    if (model.experUrl) {
        NSMutableAttributedString * experAttribute = [self createUrlImageAttribute:model.experUrl];
        [attribute appendAttributedString:experAttribute];
        [attribute appendAttributedString:[self createSapceAttribute:2]];
    }
    
    NSMutableAttributedString * nickAttribute = [self createTextAttribute:nick color:[ThemeColor messageDefaultTextColor] font:kRoomMessageDefalutFont];
    [attribute appendAttributedString:nickAttribute];
    [attribute appendAttributedString:[self createSapceAttribute:2]];
    
    NSMutableAttributedString * textAttribute = [self createTextAttribute:message.text color:[ThemeColor messageTextColor] font:kRoomMessageDefalutFont];
    [attribute appendAttributedString:textAttribute];
    
    return attribute;
}

/// 房间tips消息
/// @param message 消息的实体
+ (NSAttributedString*)makeTipsAttribute:(NIMMessage *)message {
    return [self createTextAttribute:message.text color:[ThemeColor messageDefaultTextColor] font:kRoomMessageDefalutFont];
}

/// 房间通知类消息
/// @param message 消息的实体
+ (NSAttributedString*)makeNotificationAttribute:(NIMMessage *)message {
    NIMNotificationObject *notiMsg = (NIMNotificationObject *)message.messageObject;
    NIMChatroomNotificationContent *content = (NIMChatroomNotificationContent *)notiMsg.content;
    NIMChatroomNotificationMember *member = content.targets[0];
    switch (content.eventType) {
        case NIMChatroomEventTypeEnter:///进入房间
        {
            NSString* nick = member.nick.length > 0 ? member.nick : @"";
            NSMutableAttributedString * attribute = [[NSMutableAttributedString alloc] init];
            NSMutableAttributedString * nickAttribute = [self createTextAttribute:nick color:[ThemeColor messageNickColor] font:kRoomMessageDefalutFont];
            NSMutableAttributedString * enterRoomAttribute = [self createTextAttribute:@"进入了房间" color:[ThemeColor messageDefaultTextColor] font:kRoomMessageDefalutFont];
            [attribute appendAttributedString:nickAttribute];
            [attribute appendAttributedString:enterRoomAttribute];
            return attribute;
        }
            
        case NIMChatroomEventTypeInfoUpdated:///房间信息更新
            return [self createRoomInfoUpdateAttribute:content.notifyExt];
            
        default:
            return nil;
    }
}

///房间信息更新
+ (NSAttributedString*)createRoomInfoUpdateAttribute:(NSString *)notifyExt {
    return nil;
}

/// 生成一个图片的富文本
/// @param imageUrl 网络图片的地址
+ (NSMutableAttributedString *)createUrlImageAttribute:(NSString *)imageUrl {
    NetImageView *imageView = [[NetImageView alloc]init];
    imageView.imageUrl = imageUrl;
    
    UIImage* image = imageView.image;
    if (image) {
        CGFloat scale = image.size.width / image.size.height;
        imageView.bounds = CGRectMake(0, 0, 16 * scale, 16);
    } else {
        imageView.bounds = CGRectMake(0, 0, 16, 16);
    }
    imageView.layer.masksToBounds = YES;
    imageView.contentMode = UIViewContentModeScaleAspectFill;
    NSMutableAttributedString * attrString = [NSMutableAttributedString yy_attachmentStringWithContent:imageView contentMode:UIViewContentModeScaleAspectFit attachmentSize:CGSizeMake(imageView.bounds.size.width, imageView.bounds.size.height) alignToFont:[UIFont systemFontOfSize:15.0] alignment:YYTextVerticalAlignmentCenter];
    return attrString;
}

#pragma mark - private base methods
/// 生成本地一个图片的富文本
/// @param imageName 网络图片的地址
+ (NSMutableAttributedString *)createLocalImageAttribute:(NSString *)imageName {
    return [self createImageAttribute:[UIImage imageNamed:imageName]];
}

/// 生成本地一个图片的富文本
/// @param image  本地的图片
+ (NSMutableAttributedString *)createImageAttribute:(UIImage *)image {
    UIImageView *imaveView = [[UIImageView alloc]init];
    imaveView.image = image;
    CGFloat scale = (CGFloat)imaveView.image.size.width / (CGFloat)imaveView.image.size.height;
    imaveView.bounds = CGRectMake(0, 0, 16 * scale, 16);
    NSMutableAttributedString * attrString = [NSMutableAttributedString yy_attachmentStringWithContent:imaveView contentMode:UIViewContentModeScaleAspectFit attachmentSize:CGSizeMake(imaveView.frame.size.width, imaveView.frame.size.height) alignToFont:[UIFont systemFontOfSize:15.0] alignment:YYTextVerticalAlignmentCenter];
    return attrString;
}

/// 生成一个富文本
/// @param text  富文本的文字
/// @param color 文字的颜色
/// @param font 文字的大小
+ (NSMutableAttributedString *)createTextAttribute:(NSString *)text color:(UIColor *)color font:(CGFloat)font {
    NSMutableAttributedString *attribute = [[NSMutableAttributedString alloc] initWithString:text attributes:nil];
    attribute.yy_font = [UIFont systemFontOfSize:font];
    attribute.yy_color = color;
    attribute.yy_paragraphStyle = [self paragraphStyle];
    return attribute;
}

/// 设置文本的样式 间隙 缩进 ...
+ (NSMutableParagraphStyle *)paragraphStyle {
    NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
    paraStyle.lineSpacing = 4.0f;//行间距
    // 强制排版(从左到右)
    paraStyle.alignment = NSTextAlignmentLeft;
    paraStyle.baseWritingDirection = NSWritingDirectionLeftToRight;
    
    return paraStyle;
}

/// 占位的富文本
/// @param width 需要的间隙
+ (NSMutableAttributedString *)createSapceAttribute:(CGFloat)width {
    UIView *spaceView = [[UIView alloc]init];
    spaceView.backgroundColor = [UIColor clearColor];
    spaceView.bounds = CGRectMake(0, 0, width, 10);
    NSMutableAttributedString * attribute = [NSMutableAttributedString yy_attachmentStringWithContent:spaceView contentMode:UIViewContentModeScaleAspectFit attachmentSize:CGSizeMake(spaceView.frame.size.width, spaceView.frame.size.height) alignToFont:[UIFont systemFontOfSize:15.0] alignment:YYTextVerticalAlignmentCenter];
    return attribute;
}

@end