refactor(llc): Type-safe filter fields in queries (#19)

Author: xsahil03x

docs_code_snippets/03_02_querying_activities.dart

@@ -1,4 +1,4 @@
-// ignore_for_file: unused_local_variable, file_names
+// ignore_for_file: unused_local_variable, file_names, avoid_redundant_argument_values
 
 import 'package:stream_feeds/stream_feeds.dart';
 
@@ -7,7 +7,7 @@ late Feed feed;
 
 Future<void> activitySearchAndQueries() async {
   final query = ActivitiesQuery(
-    filter: Filter.equal(ActivitiesFilterField.type, 'post'),
+    filter: const Filter.equal(ActivitiesFilterField.type, 'post'),
     sort: [ActivitiesSort.desc(ActivitiesSortField.createdAt)],
     limit: 10,
   );
@@ -18,7 +18,7 @@ Future<void> activitySearchAndQueries() async {
 
 Future<void> queryActivitiesByText() async {
   // search for activities where the text includes the word 'popularity'.
-  final query = ActivitiesQuery(
+  const query = ActivitiesQuery(
     filter: Filter.equal(ActivitiesFilterField.text, 'popularity'),
   );
 
@@ -28,7 +28,10 @@ Future<void> queryActivitiesByText() async {
 
 Future<void> queryActivitiesBySearchData() async {
   // search for activities associated with the campaign ID 'spring-sale-2025'
-  final searchValue = {'campaign': {'id': 'spring-sale-2025'}};
+  final searchValue = {
+    'campaign': {'id': 'spring-sale-2025'},
+  };
+
   final query = ActivitiesQuery(
     filter: Filter.contains(ActivitiesFilterField.searchData, searchValue),
   );
@@ -37,8 +40,11 @@ Future<void> queryActivitiesBySearchData() async {
   final activities = await activityList.get();
 
   // search for activities where the campaign took place in a mall
-  final query2 = ActivitiesQuery(
-    filter: Filter.pathExists(ActivitiesFilterField.searchData, 'campaign.location.mall'),
+  const query2 = ActivitiesQuery(
+    filter: Filter.pathExists(
+      ActivitiesFilterField.searchData,
+      'campaign.location.mall',
+    ),
   );
 
   final activityList2 = client.activityList(query2);

docs_code_snippets/04_01_feeds.dart

@@ -36,12 +36,12 @@ Future<void> readingAFeed() async {
 }
 
 Future<void> readingAFeedMoreOptions() async {
-  final query = FeedQuery(
-    fid: const FeedId(group: 'user', id: 'john'),
+  const query = FeedQuery(
+    fid: FeedId(group: 'user', id: 'john'),
     // filter activities with filter tag green
     activityFilter: Filter.in_(
       ActivitiesFilterField.filterTags,
-      const ['green'],
+      ['green'],
     ),
     activityLimit: 10,
     // additional data used for ranking
@@ -108,11 +108,9 @@ Future<void> filteringExamples() async {
     ],
   );
   // Now read the feed, this will fetch activity 1 and 2
-  final query = FeedQuery(
+  const query = FeedQuery(
     fid: feedId,
-    activityFilter: Filter.in_(ActivitiesFilterField.filterTags, const [
-      'blue',
-    ]),
+    activityFilter: Filter.in_(ActivitiesFilterField.filterTags, ['blue']),
   );
 
   final feed = client.feedFromQuery(query);
@@ -123,20 +121,21 @@ Future<void> filteringExamples() async {
 
 Future<void> moreComplexFilterExamples() async {
   // Get all the activities where tags contain "green" and type is "post" or tag contains "orange" and type is "activity"
-  final query = FeedQuery(
-    fid: const FeedId(group: 'user', id: 'john'),
+  const query = FeedQuery(
+    fid: FeedId(group: 'user', id: 'john'),
     activityFilter: Filter.or([
       Filter.and([
-        Filter.in_(ActivitiesFilterField.filterTags, const ['green']),
+        Filter.in_(ActivitiesFilterField.filterTags, ['green']),
         Filter.equal(ActivitiesFilterField.type, 'post'),
       ]),
       Filter.and([
-        Filter.in_(ActivitiesFilterField.filterTags, const ['orange']),
+        Filter.in_(ActivitiesFilterField.filterTags, ['orange']),
         Filter.equal(ActivitiesFilterField.type, 'activity'),
       ]),
     ]),
   );
 
+  final feed = client.feedFromQuery(query);
   await feed.getOrCreate();
   final activities = feed.state.activities;
 }
@@ -199,7 +198,7 @@ Future<void> memberInvites() async {
 
 Future<void> queryMyFeeds() async {
   final query = FeedsQuery(
-    filter: Filter.equal(FeedsFilterField.createdById, 'john'),
+    filter: const Filter.equal(FeedsFilterField.createdById, 'john'),
     sort: [FeedsSort.desc(FeedsSortField.createdAt)],
     limit: 10,
     watch: true,
@@ -217,15 +216,15 @@ Future<void> queryMyFeeds() async {
 }
 
 Future<void> queryFeedsWhereIAmAMember() async {
-  final query = FeedsQuery(
+  const query = FeedsQuery(
     filter: Filter.contains(FeedsFilterField.members, 'john'),
   );
   final feedList = client.feedList(query);
   final feeds = await feedList.get();
 }
 
 Future<void> queryFeedsByNameOrVisibility() async {
-  final sportsQuery = FeedsQuery(
+  const sportsQuery = FeedsQuery(
     filter: Filter.and([
       Filter.equal(FeedsFilterField.visibility, 'public'),
       Filter.query(FeedsFilterField.name, 'Sports'),
@@ -235,7 +234,7 @@ Future<void> queryFeedsByNameOrVisibility() async {
   final sportsFeedList = client.feedList(sportsQuery);
   final sportsFeeds = await sportsFeedList.get();
 
-  final techQuery = FeedsQuery(
+  const techQuery = FeedsQuery(
     filter: Filter.and([
       Filter.equal(FeedsFilterField.visibility, 'public'),
       Filter.autoComplete(FeedsFilterField.description, 'tech'),
@@ -247,7 +246,7 @@ Future<void> queryFeedsByNameOrVisibility() async {
 }
 
 Future<void> queryFeedsByCreatorName() async {
-  final query = FeedsQuery(
+  const query = FeedsQuery(
     filter: Filter.and([
       Filter.equal(FeedsFilterField.visibility, 'public'),
       Filter.query(FeedsFilterField.createdByName, 'Thompson'),

melos.yaml

@@ -46,7 +46,7 @@ command:
       stream_core:
         git:
           url: https://github.com/GetStream/stream-core-flutter.git
-          ref: 5acdcb8e378548372f7dbb6326c518edcf832d10
+          ref: 280b1045e39388668fd060439259831611b51b5a
           path: packages/stream_core
 
     # List of all the dev_dependencies used in the project.