//
//  TUIGroupConversationListModel.m
//  TXIMSDK_TUIKit_iOS
//
//  Created by annidyfeng on 2019/6/11.
//  Copyright © 2023 Tencent. All rights reserved.
//

#import "TUIGroupConversationListViewDataProvider.h"
#import <TIMCommon/TIMDefine.h>
#import <TUICore/NSString+TUIUtil.h>

@interface TUIGroupConversationListViewDataProvider ()
@property BOOL isLoadFinished;
@property BOOL isLoading;
@property NSDictionary<NSString *, NSArray<TUICommonContactCellData *> *> *dataDict;
@property NSArray *groupList;
@end

@implementation TUIGroupConversationListViewDataProvider

- (void)loadConversation {
    if (self.isLoading) return;
    self.isLoading = NO;
    self.isLoadFinished = NO;

    NSMutableDictionary *dataDict = @{}.mutableCopy;
    NSMutableArray *groupList = @[].mutableCopy;
    NSMutableArray *nonameList = @[].mutableCopy;

    @weakify(self);
    [[V2TIMManager sharedInstance]
        getJoinedGroupList:^(NSArray<V2TIMGroupInfo *> *infoList) {
          @strongify(self);
          for (V2TIMGroupInfo *group in infoList) {
              TUICommonContactCellData *data = [[TUICommonContactCellData alloc] initWithGroupInfo:group];

              NSString *group = [[data.title firstPinYin] uppercaseString];
              if (group.length == 0 || !isalpha([group characterAtIndex:0])) {
                  [nonameList addObject:data];
                  continue;
              }
              NSMutableArray *list = [dataDict objectForKey:group];
              if (!list) {
                  list = @[].mutableCopy;
                  dataDict[group] = list;
                  [groupList addObject:group];
              }
              [list addObject:data];
          }

          [groupList sortUsingSelector:@selector(localizedStandardCompare:)];
          if (nonameList.count) {
              [groupList addObject:@"#"];
              dataDict[@"#"] = nonameList;
          }
          for (NSMutableArray *list in [self.dataDict allValues]) {
              [list sortUsingSelector:@selector(compare:)];
          }

          self.groupList = groupList;
          self.dataDict = dataDict;
          self.isLoadFinished = YES;
        }
                      fail:nil];
}

- (void)removeData:(TUICommonContactCellData *)data {
    NSMutableDictionary *dictDict = [NSMutableDictionary dictionaryWithDictionary:self.dataDict];
    for (NSString *key in self.dataDict) {
        NSMutableArray *list = [NSMutableArray arrayWithArray:self.dataDict[key]];
        if ([list containsObject:data]) {
            [list removeObject:data];
            dictDict[key] = list;
            break;
        }
    }
    self.dataDict = dictDict;
}

@end