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import 'dart:async';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:linkchat/models/group.dart';
import 'package:linkchat/models/message.dart';
import 'package:simple_link_preview/simple_link_preview.dart';
import '../models/user.dart';
class Database {
final FirebaseFirestore _firestore = FirebaseFirestore.instance;
Future<FsUser?> getUserById(String uid) async {
var snap = await _firestore.collection('users').doc(uid).get();
return snap.data() != null ? FsUser.fromMap(snap.data()!) : null;
}
Stream<List<FsUser>> getAllUsers() {
return _firestore.collection('users').snapshots().map<List<FsUser>>((e) {
return e.docs.map((e) {
return FsUser.fromMap(e.data());
}).toList();
});
}
Future<void> saveUser(FsUser user) async {
await _firestore.collection('users').doc(user.uid).set({
"uid": user.uid,
"displayName": user.displayName,
"photoUrl": user.photoUrl,
"email": user.email,
});
}
Stream<List<Group>> getGroupsByUserID(String uid) {
return _firestore
.collection('groups')
.where('members', arrayContains: uid)
.snapshots()
.map<List<Group>>((e) {
return e.docs.map((e) {
return Group.fromMap(e.data(), e.id);
}).toList();
});
}
Stream<List<Message>> getMessagesByGroupId(String id) {
return _firestore
.collection('messages')
.doc(id)
.collection('messages')
.orderBy('sentAt')
.snapshots()
.map<List<Message>>((e) {
return e.docs.map((e) {
return Message.fromMap(e.data());
}).toList();
});
}
Future<void> saveMessage(Message msg, String groupId) async {
LinkPreview? preview = await SimpleLinkPreview.getPreview(msg.messageText);
await _firestore
.collection('messages')
.doc(groupId)
.collection('messages')
.add(msg.toMap(preview: preview));
await _firestore.collection('groups').doc(groupId).update({
"recentMessage": msg.toMap(preview: preview),
});
}
Future<void> saveGroup(Group group) async {
await _firestore.collection('groups').add(group.toMap());
}
}
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