Chat messages pagination

packages/firebase_common/lib/src/firestore_repositories/chat_message.dart

@@ -1,5 +1,29 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+
 import '../firestore_documents/chat_message.dart';
 
 class ChatMessageRepository {
   final _query = ChatMessageQuery();
+
+  /// 指定したチャットルームのメッセージの、指定した [lastReadQueryDocumentSnapshot]
+  /// 以降のメッセージを [limit] 件だけ取得する。
+  /// Dart 3 以降の [Record] を用いて、取得した [ReadChatMessage] 一覧に加え、
+  /// 最後に取得した [QueryDocumentSnapshot] も返す。
+  Future<(List<ReadChatMessage>, QueryDocumentSnapshot<ReadChatMessage>?)>
+      loadMessagesWithCursor({
+    required String chatRoomId,
+    required int limit,
+    required QueryDocumentSnapshot<ReadChatMessage>?
+        lastReadQueryDocumentSnapshot,
+  }) async {
+    var query = readChatMessageCollectionReference(chatRoomId: chatRoomId)
+        .orderBy('createdAt', descending: true);
+    final qds = lastReadQueryDocumentSnapshot;
+    if (qds != null) {
+      query = query.startAfterDocument(qds);
+    }
+    final qs = await query.limit(limit).get();
+    final readChatMessages = qs.docs.map((qds) => qds.data()).toList();
+    return (readChatMessages, qs.docs.lastOrNull);
+  }
 }

packages/mottai_flutter_app/pubspec.lock

@@ -13,10 +13,10 @@ packages:
     dependency: transitive
     description:
       name: _flutterfire_internals
-      sha256: a742f71d7f3484253a623b30e19256aa4668ecbb3de6ad1beb0bcf8d4777ecd8
+      sha256: "5dce45a06d386358334eb1689108db6455d90ceb0d75848d5f4819283d4ee2b8"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.3"
+    version: "1.3.4"
   analyzer:
     dependency: transitive
     description:
@@ -138,29 +138,29 @@ packages:
     source: hosted
     version: "1.1.1"
   cloud_firestore:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: cloud_firestore
-      sha256: "5bbc1f5bffa79af54ca035b92b57f81c6fb35ee5471ead67e29c8e12de8432f8"
+      sha256: "035b91f66b60dab5eefcc217accc734020234f79d963b075699920b95334a755"
       url: "https://pub.dev"
     source: hosted
-    version: "4.8.2"
+    version: "4.8.3"
   cloud_firestore_platform_interface:
     dependency: transitive
     description:
       name: cloud_firestore_platform_interface
-      sha256: "8e0aafeb727087f84710275d59a101b2acf2290ffbb3b111aab70423f8350d5d"
+      sha256: "86bd1865abbeb09a7d09da3e70364a09f894937270651fc611a1c6d6a9f7b02c"
       url: "https://pub.dev"
     source: hosted
-    version: "5.15.2"
+    version: "5.15.3"
   cloud_firestore_web:
     dependency: transitive
     description:
       name: cloud_firestore_web
-      sha256: bbf0ebb9d1e9251caa00e8727389313c64cb4240c1c31f895971c52d0c782316
+      sha256: ac2eeb2a7ab1928c3aacc30eed750fa839d6f620e112a5459e321df217be2f47
       url: "https://pub.dev"
     source: hosted
-    version: "3.6.2"
+    version: "3.6.3"
   code_builder:
     dependency: transitive
     description:
@@ -260,26 +260,26 @@ packages:
     dependency: "direct main"
     description:
       name: firebase_auth
-      sha256: f693c0aa998b1101453878951b171b69f0db5199003df1c943b33493a1de7917
+      sha256: "87216661b409575ecb1a7849da38604a0abfcb6497146b66d4832cb97a4c9e0f"
       url: "https://pub.dev"
     source: hosted
-    version: "4.6.3"
+    version: "4.7.0"
   firebase_auth_platform_interface:
     dependency: transitive
     description:
       name: firebase_auth_platform_interface
-      sha256: "689ae048b78ad088ba31acdec45f5badb56201e749ed8b534947a7303ddb32aa"
+      sha256: "4ab0a8997994db2b76bf0652689d7908ca935a99314857c683251bc23d31c287"
       url: "https://pub.dev"
     source: hosted
-    version: "6.15.3"
+    version: "6.16.0"
   firebase_auth_web:
     dependency: transitive
     description:
       name: firebase_auth_web
-      sha256: f35d637a1707afd51f30090bb5234b381d5071ccbfef09b8c393bc7c65e440cd
+      sha256: c74c5753855896b31536b9e151e34bf7eea143f0d9c209947b5f7ddc8e111989
       url: "https://pub.dev"
     source: hosted
-    version: "5.5.3"
+    version: "5.6.0"
   firebase_common:
     dependency: "direct main"
     description:
@@ -291,10 +291,10 @@ packages:
     dependency: "direct main"
     description:
       name: firebase_core
-      sha256: a4a99204da264a0aa9d54a332ea0315ce7b0768075139c77abefe98093dd98be
+      sha256: "2e9324f719e90200dc7d3c4f5d2abc26052f9f2b995d3b6626c47a0dfe1c8192"
       url: "https://pub.dev"
     source: hosted
-    version: "2.14.0"
+    version: "2.15.0"
   firebase_core_platform_interface:
     dependency: transitive
     description:
@@ -315,42 +315,42 @@ packages:
     dependency: "direct main"
     description:
       name: firebase_dynamic_links
-      sha256: "9b984d0abd227a702451a997abcca763f4dbf67e260dad60e5506d55e3eff244"
+      sha256: "4872f4d7e94736041398bc3490c2ddd87ee159d6b051ba01ca2708e5260a7ebe"
       url: "https://pub.dev"
     source: hosted
-    version: "5.3.3"
+    version: "5.3.4"
   firebase_dynamic_links_platform_interface:
     dependency: transitive
     description:
       name: firebase_dynamic_links_platform_interface
-      sha256: "6ef00a0be18f3231e9727f7c4b31db89dbfa16792098beb850603c30854560ff"
+      sha256: "946fccfefb67e26bf63e392f1b3917d79ea031d3071488f0c5e8ab72de8219ab"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.6+3"
+    version: "0.2.6+4"
   firebase_messaging:
     dependency: "direct main"
     description:
       name: firebase_messaging
-      sha256: "7a09d8c21147f009882a27c96de1918ea283f974d73cb6fae1d234bb9ec18d8b"
+      sha256: "8ac91d83a028eef050de770f1dc98421e215714d245f34de7b154d436676fbd0"
       url: "https://pub.dev"
     source: hosted
-    version: "14.6.4"
+    version: "14.6.5"
   firebase_messaging_platform_interface:
     dependency: transitive
     description:
       name: firebase_messaging_platform_interface
-      sha256: e9e9dc48a3d8ffa67aaba3d6b1ebf74bc7d7d8c83d10b1458ff97878b9d8a2b0
+      sha256: b2995e3640efb646e9ebf0e2fa50dea84895f0746a31d7e3af0e5e009a533a1a
       url: "https://pub.dev"
     source: hosted
-    version: "4.5.3"
+    version: "4.5.4"
   firebase_messaging_web:
     dependency: transitive
     description:
       name: firebase_messaging_web
-      sha256: "381f217e41e0e407baf8df21787b97e46fabfacefd6a953425be3a6cdf2269f4"
+      sha256: "5d8446a28339124a2cb4f57a6ca454a3aca7d0c5c0cdfa5707afb192f7c830a7"
       url: "https://pub.dev"
     source: hosted
-    version: "3.5.3"
+    version: "3.5.4"
   firebase_storage:
     dependency: transitive
     description:

packages/mottai_flutter_app/pubspec.yaml

@@ -9,14 +9,15 @@ environment:
 
 dependencies:
   auto_route: ^7.7.0
+  cloud_firestore: ^4.8.3
   dart_flutter_common:
     path: ../dart_flutter_common
-  firebase_auth: ^4.6.3
+  firebase_auth: ^4.7.0
   firebase_common:
     path: ../firebase_common
-  firebase_core: ^2.14.0
-  firebase_dynamic_links: ^5.3.3
-  firebase_messaging: ^14.6.4
+  firebase_core: ^2.15.0
+  firebase_dynamic_links: ^5.3.4
+  firebase_messaging: ^14.6.5
   flutter:
     sdk: flutter
   flutter_image_compress: ^2.0.3