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Code Issues Projects Releases Wiki Activity

Make use of cached user information

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This commit is contained in:
Pierre HUBERT 2019-04-24 11:33:58 +02:00
parent de1ef7fd6d
commit f8298919c2
2 changed files with 33 additions and 3 deletions
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34
lib/helpers/users_helper.dart
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@ -11,14 +11,13 @@ import 'package:comunic/models/user.dart';
/// @author Pierre HUBERT /// @author Pierre HUBERT
class UsersHelper { class UsersHelper {
final UsersDatabaseHelper _usersDatabaseHelper = UsersDatabaseHelper(); final UsersDatabaseHelper _usersDatabaseHelper = UsersDatabaseHelper();
/// Download information about some given users ID /// Download information about some given users ID
/// ///
/// Return the list of users information in case of success, null in case of /// Return the list of users information in case of success, null in case of
/// failure /// failure
Future<UsersList> downloadInfo(List<int> users) async { Future<UsersList> _downloadInfo(List<int> users) async {
// Execute the request // Execute the request
final response = await APIRequest( final response = await APIRequest(
uri: "user/getInfoMultiple", args: {"usersID": users.join(",")}).exec(); uri: "user/getInfoMultiple", args: {"usersID": users.join(",")}).exec();
@ -51,4 +50,35 @@ class UsersHelper {
return list; return list;
} }
/// Get users information
///
/// If [forceDownload] is set to true, the data will always be retrieved from
/// the server, otherwise cached data will be used if available
Future<UsersList> getUsersInfo(List<int> users,
{bool forceDownload = false}) async {
List<int> toDownload = List();
UsersList list = UsersList();
// Check cache
for(int userID in users){
if(!forceDownload && await _usersDatabaseHelper.has(userID))
list.add(await _usersDatabaseHelper.get(userID));
else
toDownload.add(userID);
}
// Process download if required
if(toDownload.length > 0) {
final downloadedList = await _downloadInfo(toDownload);
if(downloadedList == null)
return null;
list.addAll(downloadedList);
}
return list;
}
} }

2
lib/ui/screens/conversations_screen.dart
View File

@ -48,7 +48,7 @@ class _ConversationScreenState extends State<ConversationsScreen> {
if (list == null) return _gotLoadingError(); if (list == null) return _gotLoadingError();
//Get information about the members of the conversations //Get information about the members of the conversations
list.users = await _usersHelper.downloadInfo(list.allUsersID); list.users = await _usersHelper.getUsersInfo(list.allUsersID);
if(list.users == null) return _gotLoadingError(); if(list.users == null) return _gotLoadingError();
//Save list //Save list