chore: import upstream snapshot with attribution

TLChat/AppControlCenter/TLUserManager/Models/TLGroup+CreateAvatar.h

@@ -0,0 +1,15 @@
+//
+//  TLGroup+CreateAvatar.h
+//  TLChat
+//
+//  Created by 李伯坤 on 2017/9/19.
+//  Copyright © 2017年 李伯坤. All rights reserved.
+//
+
+#import "TLGroup.h"
+
+@interface TLGroup (CreateAvatar)
+
+- (void)createGroupAvatarWithCompleteAction:(void (^)(NSString *groupID))completeAction;
+
+@end

TLChat/AppControlCenter/TLUserManager/Models/TLGroup+CreateAvatar.m

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+//
+//  TLGroup+CreateAvatar.m
+//  TLChat
+//
+//  Created by 李伯坤 on 2017/9/19.
+//  Copyright © 2017年 李伯坤. All rights reserved.
+//
+
+#import "TLGroup+CreateAvatar.h"
+#import "NSFileManager+TLChat.h"
+#import "TLMacros.h"
+
+@implementation TLGroup (CreateAvatar)
+
+- (void)createGroupAvatarWithCompleteAction:(void (^)(NSString *groupID))completeAction
+{
+    dispatch_async(dispatch_get_global_queue(0, 0), ^{
+        NSInteger usersCount = self.users.count > 9 ? 9 : self.users.count;
+        CGFloat viewWidth = 200;
+        CGFloat width = viewWidth / 3 * 0.85;
+        CGFloat space3 = (viewWidth - width * 3) / 4;               // 三张图时的边距（图与图之间的边距）
+        CGFloat space2 = (viewWidth - width * 2 + space3) / 2;      // 两张图时的边距
+        CGFloat space1 = (viewWidth - width) / 2;                   // 一张图时的边距
+        CGFloat y = ({
+            int ans = space1;
+            if (usersCount > 6) {
+                ans = space3;
+            }
+            else if (usersCount >= 3) {
+                ans = space2 - space3;
+            }
+            ans;
+        });
+        CGFloat x = ({
+            CGFloat ans = space1;
+            if (usersCount % 3 == 0) {
+                ans = usersCount == 3 ? space1 :space3;
+            }
+            else if (usersCount % 2 == 0) {
+                ans = space2 - space3;
+            }
+            ans;
+        });
+        
+        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, viewWidth, viewWidth)];
+        [view setBackgroundColor:[UIColor colorWithWhite:0.8 alpha:0.6]];
+        __block NSInteger count = 0;        // 下载完成图片计数器
+        for (NSInteger i = usersCount - 1; i >= 0; i--) {
+            TLUser *user = [self.users objectAtIndex:i];
+            UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(x, y, width, width)];
+            [view addSubview:imageView];
+            [imageView tt_setImageWithURL:user.avatarURL.toURL placeholderImage:[UIImage imageNamed:DEFAULT_AVATAR_PATH] completed:^(UIImage *image, NSError *error, TLImageCacheType cacheType, NSURL *imageURL) {
+                count ++;
+                if (count == usersCount) {     // 图片全部下载完成
+                    UIGraphicsBeginImageContextWithOptions(view.frame.size, NO, 2.0);
+                    [view.layer renderInContext:UIGraphicsGetCurrentContext()];
+                    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
+                    UIGraphicsEndImageContext();
+                    CGImageRef imageRef = image.CGImage;
+                    CGImageRef imageRefRect =CGImageCreateWithImageInRect(imageRef, CGRectMake(0, 0, view.width * 2, view.height * 2));
+                    UIImage *ansImage = [[UIImage alloc] initWithCGImage:imageRefRect];
+                    NSData *imageViewData = UIImagePNGRepresentation(ansImage);
+                    NSString *savedImagePath = [NSFileManager pathUserAvatar:self.groupAvatarPath];
+                    [imageViewData writeToFile:savedImagePath atomically:YES];
+                    CGImageRelease(imageRefRect);
+                    dispatch_async(dispatch_get_main_queue(), ^{
+                        if (completeAction) {
+                            completeAction(self.groupID);
+                        }
+                    });
+                }
+            }];
+            if (i % 3 == 0) {   // 换行
+                y += (width + space3);
+                x = space3;
+            }
+            else if (i == 2 && usersCount == 3) {  // 换行，只有三个时
+                y += (width + space3);
+                x = space2;
+            }
+            else {
+                x += (width + space3);
+            }
+        }
+    });
+}
+
+
+@end

TLChat/AppControlCenter/TLUserManager/Models/TLGroup.h

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+//
+//  TLGroup.h
+//  TLChat
+//
+//  Created by 李伯坤 on 16/3/7.
+//  Copyright © 2016年 李伯坤. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "TLUser.h"
+
+@interface TLGroup : NSObject
+
+/**
+ *  讨论组名称
+ */
+@property (nonatomic, strong) NSString *groupName;
+
+
+@property (nonatomic, strong) NSString *groupAvatarPath;
+
+/**
+ *  讨论组ID
+ */
+@property (nonatomic, strong) NSString *groupID;
+
+/**
+ *  讨论组成员
+ */
+@property (nonatomic, strong) NSMutableArray *users;
+
+/**
+ *  群公告
+ */
+@property (nonatomic, strong) NSString *post;
+
+/**
+ *  我的群昵称
+ */
+@property (nonatomic, strong) NSString *myNikeName;
+
+@property (nonatomic, strong) NSString *pinyin;
+
+@property (nonatomic, strong) NSString *pinyinInitial;
+
+@property (nonatomic, assign, readonly) NSInteger count;
+
+@property (nonatomic, assign) BOOL showNameInChat;
+
+
+- (void)addObject:(id)anObject;
+
+- (id)objectAtIndex:(NSUInteger)index;
+
+- (TLUser *)memberByUserID:(NSString *)uid;
+
+@end

TLChat/AppControlCenter/TLUserManager/Models/TLGroup.m

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+//
+//  TLGroup.m
+//  TLChat
+//
+//  Created by 李伯坤 on 16/3/7.
+//  Copyright © 2016年 李伯坤. All rights reserved.
+//
+
+#import "TLGroup.h"
+#import "NSString+PinYin.h"
+#import "TLUserHelper.h"
+
+@implementation TLGroup
+
+- (id)init
+{
+    if (self = [super init]) {
+        [TLGroup mj_setupObjectClassInArray:^NSDictionary *{
+            return @{ @"users" : @"TLUser" };
+        }];
+    }
+    return self;
+}
+
+- (NSInteger)count
+{
+    return self.users.count;
+}
+
+- (void)addObject:(id)anObject
+{
+    [self.users addObject:anObject];
+}
+
+- (id)objectAtIndex:(NSUInteger)index
+{
+    return [self.users objectAtIndex:index];
+}
+
+- (TLUser *)memberByUserID:(NSString *)uid
+{
+    for (TLUser *user in self.users) {
+        if ([user.userID isEqualToString:uid]) {
+            return user;
+        }
+    }
+    return nil;
+}
+
+- (NSString *)groupName
+{
+    if (_groupName == nil || _groupName.length == 0) {
+        for (TLUser *user in self.users) {
+            if (user.showName.length > 0) {
+                if (_groupName == nil || _groupName.length <= 0) {
+                    _groupName = user.showName;
+                }
+                else {
+                    _groupName = [NSString stringWithFormat:@"%@,%@", _groupName, user.showName];
+                }
+            }
+        }
+    }
+    return _groupName;
+}
+
+- (NSString *)myNikeName
+{
+    if (_myNikeName.length == 0) {
+        _myNikeName = [TLUserHelper sharedHelper].user.showName;
+    }
+    return _myNikeName;
+}
+
+- (NSString *)pinyin
+{
+    if (_pinyin == nil) {
+        _pinyin = self.groupName.pinyin;
+    }
+    return _pinyin;
+}
+
+- (NSString *)pinyinInitial
+{
+    if (_pinyinInitial == nil) {
+        _pinyinInitial = self.groupName.pinyinInitial;
+    }
+    return _pinyinInitial;
+}
+
+- (NSString *)groupAvatarPath
+{
+    if (_groupAvatarPath == nil) {
+        _groupAvatarPath = [self.groupID stringByAppendingString:@".png"];
+    }
+    return _groupAvatarPath;
+}
+
+@end