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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,209 @@ | ||
| import 'dart:convert'; | ||
|
|
||
| import 'package:flutter/rendering.dart'; | ||
| import 'package:flutter_ai/services/gemini_services.dart'; | ||
| import 'package:http/http.dart' as http; | ||
| import 'package:flutter/material.dart'; | ||
|
|
||
| class GeminiMsgScreen extends StatefulWidget { | ||
| const GeminiMsgScreen({super.key}); | ||
|
|
||
| @override | ||
| State<GeminiMsgScreen> createState() => _GeminiMsgScreenState(); | ||
| } | ||
|
|
||
| class _GeminiMsgScreenState extends State<GeminiMsgScreen> { | ||
| final TextEditingController chatController = TextEditingController(); | ||
| final ScrollController scrollController = ScrollController(); | ||
| List<Map<String, dynamic>> chatHistory = []; | ||
|
|
||
| sendMessage() { | ||
| FocusManager.instance.primaryFocus?.unfocus(); | ||
| if (chatController.text.isNotEmpty) { | ||
| chatHistory.add({ | ||
| "time": DateTime.now(), | ||
| "message": chatController.text, | ||
| "isSender": true, | ||
| }); | ||
| chatController.clear(); | ||
| } | ||
| if (mounted) setState(() {}); | ||
| if (scrollController.hasClients) { | ||
| scrollController.jumpTo(scrollController.position.maxScrollExtent); | ||
| } | ||
| if (mounted) setState(() {}); | ||
| getResponses(); | ||
| } | ||
|
|
||
| void getResponses() async { | ||
| final url = | ||
| "https://generativelanguage.googleapis.com/v1beta2/models/chat-bison-001:generateMessage?key=${GeminiServices.apikey}"; | ||
| final uri = Uri.parse(url); | ||
| List<Map<String, String>> msg = []; | ||
| for (var i = 0; i < chatHistory.length; i++) { | ||
| msg.add({"content": chatHistory[i]["message"]}); | ||
| } | ||
| Map<String, dynamic> request = { | ||
| "prompt": { | ||
| "messages": [msg] | ||
| }, | ||
| "temperature": 0.25, | ||
| "candidateCount": 1, | ||
| "topP": 1, | ||
| "topK": 1 | ||
| }; | ||
| chatHistory.add({ | ||
| "time": DateTime.now(), | ||
| "message": 'typing', | ||
| "isSender": false, | ||
| }); | ||
| if (scrollController.hasClients) { | ||
| scrollController.jumpTo(scrollController.position.maxScrollExtent); | ||
| } | ||
| final response = await http.post(uri, body: jsonEncode(request)); | ||
| chatHistory.removeLast(); | ||
| chatHistory.add({ | ||
| "time": DateTime.now(), | ||
| "message": json.decode(response.body)["candidates"][0]["content"], | ||
| "isSender": false, | ||
| }); | ||
| if (mounted) setState(() {}); | ||
| if (scrollController.hasClients) { | ||
| scrollController.animateTo( | ||
| scrollController.position.maxScrollExtent, | ||
| duration: const Duration(microseconds: 1), | ||
| curve: Curves.linear, | ||
| ); | ||
| } | ||
| if (mounted) setState(() {}); | ||
| } | ||
|
|
||
| double previousScrollPosition = 0.0; | ||
| ScrollDirection scrollDirection = ScrollDirection.idle; | ||
| void onScroll() { | ||
| double currentScrollPosition = scrollController.position.pixels; | ||
| if (currentScrollPosition > previousScrollPosition) { | ||
| scrollDirection = ScrollDirection.forward; | ||
| if (mounted) setState(() {}); | ||
| } else if (currentScrollPosition < previousScrollPosition) { | ||
| scrollDirection = ScrollDirection.reverse; | ||
| if (mounted) setState(() {}); | ||
| } | ||
|
|
||
| previousScrollPosition = currentScrollPosition; | ||
| } | ||
|
|
||
| @override | ||
| void initState() { | ||
| scrollController.addListener(onScroll); | ||
| if (mounted) setState(() {}); | ||
| super.initState(); | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| appBar: AppBar(title: const Text('Chat with Gemini AI')), | ||
| bottomNavigationBar: Padding( | ||
| padding: EdgeInsets.only( | ||
| left: 15, | ||
| right: 15, | ||
| bottom: MediaQuery.of(context).viewInsets.bottom, | ||
| ), | ||
| child: Padding( | ||
| padding: const EdgeInsets.only(bottom: 20), | ||
| child: Row( | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: [ | ||
| Expanded( | ||
| child: TextFormField( | ||
| maxLines: null, | ||
| controller: chatController, | ||
| keyboardType: TextInputType.multiline, | ||
| onChanged: (value) => setState(() {}), | ||
| textInputAction: TextInputAction.send, | ||
| textCapitalization: TextCapitalization.sentences, | ||
| decoration: InputDecoration( | ||
| isDense: true, | ||
| hintText: "Type a message", | ||
| contentPadding: const EdgeInsets.all(12.0), | ||
| enabledBorder: OutlineInputBorder( | ||
| borderRadius: BorderRadius.circular(30), | ||
| borderSide: const BorderSide(color: Colors.grey), | ||
| ), | ||
| focusedBorder: OutlineInputBorder( | ||
| borderRadius: BorderRadius.circular(30), | ||
| borderSide: const BorderSide(color: Colors.grey), | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| if (chatController.text.isNotEmpty) | ||
| Padding( | ||
| padding: const EdgeInsets.only(left: 10), | ||
| child: InkWell( | ||
| onTap: () => sendMessage(), | ||
| child: const CircleAvatar(child: Icon(Icons.send)), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| body: Padding( | ||
| padding: const EdgeInsets.symmetric(horizontal: 15, vertical: 20), | ||
| child: chatHistory.isEmpty | ||
| ? const Center( | ||
| child: Text('Start conservating with Gemini...'), | ||
| ) | ||
| : ListView.builder( | ||
| itemCount: chatHistory.length, | ||
| controller: scrollController, | ||
| padding: const EdgeInsets.only(top: 10, bottom: 10), | ||
| physics: const BouncingScrollPhysics(), | ||
| itemBuilder: (context, index) { | ||
| return Container( | ||
| padding: const EdgeInsets.only( | ||
| left: 14, | ||
| right: 14, | ||
| top: 10, | ||
| bottom: 10, | ||
| ), | ||
| child: Align( | ||
| alignment: (chatHistory[index]["isSender"] | ||
| ? Alignment.topRight | ||
| : Alignment.topLeft), | ||
| child: Container( | ||
| padding: const EdgeInsets.all(16), | ||
| decoration: BoxDecoration( | ||
| borderRadius: BorderRadius.circular(20), | ||
| boxShadow: [ | ||
| BoxShadow( | ||
| color: Colors.grey.withOpacity(0.5), | ||
| spreadRadius: 2, | ||
| blurRadius: 5, | ||
| offset: const Offset(0, 3), | ||
| ), | ||
| ], | ||
| color: chatHistory[index]["isSender"] | ||
| ? Colors.pink | ||
| : Colors.white, | ||
| ), | ||
| child: Text( | ||
| chatHistory[index]["message"], | ||
| style: TextStyle( | ||
| fontSize: 15, | ||
| color: chatHistory[index]["isSender"] | ||
| ? Colors.white | ||
| : Colors.black, | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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