[Persistence] Add more docs

Signed-off-by: Sahil Kumar <xdsahil@gmail.com>

packages/stream_chat_persistence/lib/src/db/shared/native_db.dart

@@ -1,5 +1,3 @@
-//ignore_for_file: public_member_api_docs
-
 import 'dart:io';
 import 'dart:isolate';
 import 'package:moor/ffi.dart';
@@ -7,10 +5,18 @@ import 'package:moor/isolate.dart';
 import 'package:moor/moor.dart';
 import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:stream_chat_persistence/src/stream_chat_persistence_client.dart';
+import 'package:stream_chat_persistence/stream_chat_persistence.dart';
 
 import '../moor_chat_database.dart';
 
+/// A Helper class to construct new instances of [MoorChatDatabase] specifically
+/// for native platform applications
 class SharedDB {
+  /// Returns a new instance of [VmDatabase] created using [userId]
+  /// on a regular isolate.
+  ///
+  /// Generally used with [ConnectionMode.regular].
   static Future<VmDatabase> constructDatabase(
     String userId, {
     bool logStatements = false,
@@ -62,7 +68,11 @@ class SharedDB {
     return (await receivePort.first as MoorIsolate);
   }
 
-  static Future<MoorChatDatabase> constructOfflineStorage(
+  /// Returns a new instance of [MoorChatDatabase] using the factory constructor
+  /// [MoorChatDatabase.connect] created on a background isolate.
+  ///
+  /// Generally used with [ConnectionMode.background].
+  static Future<MoorChatDatabase> constructMoorChatDatabase(
     String userId, {
     bool logStatements = false,
   }) async {

packages/stream_chat_persistence/lib/src/db/shared/unsupported_db.dart

@@ -1,15 +1,21 @@
-//ignore_for_file: public_member_api_docs
-//ignore_for_file: always_declare_return_types
+import 'package:stream_chat_persistence/stream_chat_persistence.dart';
 
+/// A Helper class to construct new instances of [MoorChatDatabase]
 class SharedDB {
-  static constructDatabase(
+  /// Returns a new instance of database.
+  ///
+  /// Generally used with [ConnectionMode.regular].
+  static dynamic constructDatabase(
     String userId, {
     bool logStatements = false,
   }) {
     throw 'Unsupported Platform';
   }
 
-  static constructOfflineStorage(
+  /// Return a new instance of moor chat database.
+  ///
+  /// Generally used with [ConnectionMode.background].
+  static dynamic constructMoorChatDatabase(
     String userId, {
     bool logStatements = false,
   }) {

packages/stream_chat_persistence/lib/src/db/shared/web_db.dart

@@ -1,11 +1,15 @@
-//ignore_for_file: public_member_api_docs
-//ignore_for_file: always_declare_return_types
 import 'package:moor/moor_web.dart';
+import 'package:stream_chat_persistence/src/stream_chat_persistence_client.dart';
 
 import '../moor_chat_database.dart';
 
+/// A Helper class to construct new instances of [MoorChatDatabase] specifically
+/// for Web applications
 class SharedDB {
-  static constructDatabase(
+  /// Returns a new instance of [WebDatabase] created using [userId].
+  ///
+  /// Generally used with [ConnectionMode.regular].
+  static Future<WebDatabase> constructDatabase(
     String userId, {
     bool logStatements = false,
   }) async {
@@ -13,7 +17,11 @@ class SharedDB {
     return WebDatabase(dbName, logStatements: logStatements);
   }
 
-  static Future<MoorChatDatabase> constructOfflineStorage(
+  /// Returns a new instance of [MoorChatDatabase] creating using the
+  /// default constructor.
+  ///
+  /// Generally used with [ConnectionMode.background].
+  static Future<MoorChatDatabase> constructMoorChatDatabase(
     String userId, {
     bool logStatements = false,
   }) async {

packages/stream_chat_persistence/lib/src/stream_chat_persistence_client.dart

@@ -43,7 +43,7 @@ class StreamChatPersistenceClient extends ChatPersistenceClient {
         return;
       case ConnectionMode.background:
         _logger.info('Connecting on background isolate');
-        _db = await SharedDB.constructOfflineStorage(userId);
+        _db = await SharedDB.constructMoorChatDatabase(userId);
         return;
     }
   }

packages/stream_chat_persistence/pubspec.yaml

@@ -20,3 +20,4 @@ dev_dependencies:
   test: ^1.15.7
   build_runner: ^1.11.0
   moor_generator: ^3.4.1
+  pedantic: ^1.9.2