feat: added chat functionality, user will get answers based on old conversation

Author: vineyrawat

lib/providers/gemini_chat_provider.dart

@@ -1,10 +1,8 @@
-import 'dart:developer';
-
 import 'package:flutter/material.dart';
+import 'package:flutter_gemini/flutter_gemini.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:flutter_chat_types/flutter_chat_types.dart' as types;
 import 'package:convogen/providers/app_settings_provider.dart';
-import 'package:google_gemini/google_gemini.dart';
 
 var geminiChatProvider =
     StateNotifierProvider<GeminiChatProvider, GeminiChatState>(
@@ -19,6 +17,7 @@ class GeminiChatState {
     types.User(id: '1', firstName: 'Gemini', role: types.Role.user),
     types.User(id: '2', firstName: 'User', role: types.Role.user)
   ];
+
   const GeminiChatState(
       {required this.isLoading,
       required this.messages,
@@ -82,14 +81,19 @@ class GeminiChatProvider extends StateNotifier<GeminiChatState> {
         text: prompt,
         createdAt: DateTime.now().millisecondsSinceEpoch));
     state = state.copyWith(isTyping: true);
-    var gemini =
-        GoogleGemini(apiKey: ref.read(appSettingsProvider).geminiApiKey);
-    var res = await gemini.generateFromText(prompt);
-    log(res.toString());
+
+    var chats = state.messages.map((dynamic e) => Content(
+        parts: [Parts(text: e.text)],
+        role: e.author == state.users[1] ? 'model' : 'user'));
+    var flutterGemini =
+        Gemini.init(apiKey: ref.read(appSettingsProvider).geminiApiKey);
+
+    var res = await flutterGemini.chat(chats.toList().reversed.toList());
     addMessage(types.TextMessage(
         author: state.users[1],
         id: DateTime.now().toString(),
-        text: res.text,
+        // text: res!.content!.parts!.map((e) => e.text).join("\n"),
+        text: res?.output ?? "Unable to proceed",
         createdAt: DateTime.now().millisecondsSinceEpoch));
     state = state.copyWith(isTyping: false);
   }

pubspec.lock

@@ -273,6 +273,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.0"
+  dio:
+    dependency: transitive
+    description:
+      name: dio
+      sha256: "49af28382aefc53562459104f64d16b9dfd1e8ef68c862d5af436cc8356ce5a8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.4.1"
   equatable:
     dependency: transitive
     description:
@@ -342,6 +350,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.0"
+  flutter_gemini:
+    dependency: "direct main"
+    description:
+      name: flutter_gemini
+      sha256: "1e106f4644d1bc3b1806c9fbf0b6399873b16041d61ea12e3fc229f23f3aa067"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.3"
   flutter_link_previewer:
     dependency: transitive
     description:
@@ -445,14 +461,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.0"
-  google_gemini:
-    dependency: "direct main"
-    description:
-      name: google_gemini
-      sha256: "8cf19c909e5bfb0518391f4d538251f29e3283caa021249b76afcd69b2963e26"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.0.9"
   graphs:
     dependency: transitive
     description:

pubspec.yaml

@@ -1,5 +1,5 @@
 name: convogen
-description: "A new Flutter project."
+description: "A AI Chatbot based on Google's Gemini."
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.
 publish_to: "none" # Remove this line if you wish to publish to pub.dev
@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.0.0+2
+version: 1.0.1
 
 environment:
   sdk: ">=3.2.3 <4.0.0"
@@ -37,7 +37,6 @@ dependencies:
   flutter_chat_ui: ^1.6.10
   flutter_chat_types: ^3.6.2
   provider: ^6.1.1
-  google_gemini: ^0.0.9
   flutter_riverpod: ^2.4.9
   riverpod_annotation: ^2.3.3
   shared_preferences: ^2.2.2
@@ -49,6 +48,7 @@ dependencies:
   google_fonts: ^6.1.0
   flutter_svg: ^2.0.9
   go_router: ^13.0.0
+  flutter_gemini: ^2.0.3
 
 dev_dependencies:
   flutter_test: