// ignore_for_file: depend_on_referenced_packages

import 'dart:async';
import 'dart:io';

import 'package:didvan/services/storage/storage.dart';
import 'package:http/http.dart' as http;
import 'package:http/http.dart';
import 'package:path/path.dart' as p;
import 'package:http_parser/http_parser.dart' as parser;

class AiApiService {
  static const String baseUrl = 'https://api.didvan.app/ai';
  static final _client = http.Client();

  static Future<http.MultipartRequest> initial(
      {required final String url,
      required final String message,
      final int? chatId,
      final File? file}) async {
    final headers = {
      "Authorization": "Bearer ${await StorageService.getValue(key: 'token')}",
      'Content-Type': 'multipart/form-data'
    };

    var request = http.MultipartRequest('POST', Uri.parse(baseUrl + url))
      ..headers.addAll(headers);

    request.fields['prompt'] = message;
    if (chatId != null) {
      request.fields['chatId'] = chatId.toString();
    }
    if (file != null) {
      final length = await file.length();
      String basename = p.basename(file.path);
      String mediaExtension = p.extension(file.path).replaceAll('.', '');
      String mediaFormat = 'image';
      if (mediaExtension.contains('pdf')) {
        mediaFormat = 'application';
      }
      request.files.add(
        http.MultipartFile('file', file.readAsBytes().asStream(), length,
            filename: basename,
            contentType: parser.MediaType(mediaFormat, mediaExtension)),
      );
    }
    return request;
  }

  static Future<ByteStream> getResponse(http.MultipartRequest request) async {
    final res = _client.send(request).timeout(
          const Duration(seconds: 30),
        );
    final http.StreamedResponse response = await res;
    return response.stream;
  }
}