413 lines
13 KiB
Dart
413 lines
13 KiB
Dart
import 'dart:convert';
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import 'package:http/http.dart' as http;
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import 'package:flutter_dotenv/flutter_dotenv.dart';
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import '../models/task_model.dart';
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class DeepSeekService {
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final String? apiKey;
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final String baseUrl = 'https://api.deepseek.com';
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DeepSeekService({this.apiKey});
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// Генерация подзадач из основной задачи
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Future<List<Map<String, dynamic>>> generateSubtasks({
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required String title,
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required String description,
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}) async {
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if (apiKey == null || apiKey!.isEmpty) {
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return _mockGenerateSubtasks(title, description);
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}
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try {
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final response = await http.post(
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Uri.parse('$baseUrl/v1/chat/completions'),
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headers: {
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'Content-Type': 'application/json',
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'Authorization': 'Bearer $apiKey',
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},
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body: jsonEncode({
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'model': 'deepseek-chat',
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'messages': [
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{
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'role': 'system',
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'content':
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'You are a task planning assistant. Break down tasks into logical subtasks. Return ONLY a JSON array.',
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},
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{
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'role': 'user',
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'content':
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'Break down this task into 3-7 subtasks:\n\nTitle: $title\nDescription: $description\n\nReturn ONLY a JSON array with format: [{"title": "...", "estimatedHours": 0, "description": "..."}]',
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},
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],
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'temperature': 0.7,
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'max_tokens': 2000,
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}),
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);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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final content = data['choices'][0]['message']['content'];
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// Извлекаем JSON из ответа
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final jsonMatch = RegExp(r'\[.*\]', dotAll: true).firstMatch(content);
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if (jsonMatch != null) {
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final List<dynamic> subtasks = jsonDecode(jsonMatch.group(0)!);
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return subtasks.cast<Map<String, dynamic>>();
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}
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} else {
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print('DeepSeek API Error: ${response.statusCode} - ${response.body}');
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}
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} catch (e) {
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print('DeepSeek Service Error: $e');
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}
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return _mockGenerateSubtasks(title, description);
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}
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// AI приоритизация задач
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Future<TaskPriority> prioritizeTask({
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required String title,
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required String description,
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DateTime? dueDate,
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}) async {
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if (apiKey == null || apiKey!.isEmpty) {
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return _mockPrioritizeTask(dueDate);
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}
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try {
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final response = await http.post(
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Uri.parse('$baseUrl/v1/chat/completions'),
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headers: {
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'Content-Type': 'application/json',
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'Authorization': 'Bearer $apiKey',
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},
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body: jsonEncode({
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'model': 'deepseek-chat',
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'messages': [
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{
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'role': 'system',
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'content':
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'You are a task prioritization assistant. Determine task priority: low, medium, high, or urgent. Reply with ONE word only.',
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},
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{
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'role': 'user',
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'content':
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'What priority should this task have?\n\nTitle: $title\nDescription: $description\nDue: ${dueDate ?? "Not specified"}\n\nReply with ONE word: low, medium, high, or urgent',
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},
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],
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'temperature': 0.3,
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'max_tokens': 10,
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}),
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);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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final content =
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data['choices'][0]['message']['content'].trim().toLowerCase();
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switch (content) {
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case 'urgent':
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return TaskPriority.urgent;
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case 'high':
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return TaskPriority.high;
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case 'low':
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return TaskPriority.low;
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default:
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return TaskPriority.medium;
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}
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}
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} catch (e) {
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print('DeepSeek Service Error: $e');
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}
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return _mockPrioritizeTask(dueDate);
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}
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// Генерация описания задачи
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Future<String> generateTaskDescription({
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required String title,
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String? context,
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}) async {
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if (apiKey == null || apiKey!.isEmpty) {
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return 'Описание для задачи: $title';
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}
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try {
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final response = await http.post(
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Uri.parse('$baseUrl/v1/chat/completions'),
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headers: {
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'Content-Type': 'application/json',
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'Authorization': 'Bearer $apiKey',
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},
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body: jsonEncode({
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'model': 'deepseek-chat',
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'messages': [
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{
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'role': 'system',
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'content':
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'You are a task description writer. Write clear, concise task descriptions in Russian. Keep it under 100 words.',
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},
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{
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'role': 'user',
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'content':
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'Write a brief description for this task:\n\nTitle: $title\nContext: ${context ?? "No additional context"}\n\nWrite in Russian.',
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},
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],
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'temperature': 0.5,
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'max_tokens': 500,
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}),
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);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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return data['choices'][0]['message']['content'];
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}
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} catch (e) {
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print('DeepSeek Service Error: $e');
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}
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return 'Описание для задачи: $title';
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}
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// Умное планирование - распределение задач по времени
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Future<List<Map<String, dynamic>>> smartSchedule({
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required List<TaskModel> tasks,
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required DateTime startDate,
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required DateTime endDate,
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required int availableHoursPerDay,
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}) async {
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if (apiKey == null || apiKey!.isEmpty) {
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return _mockSchedule(tasks, startDate, endDate, availableHoursPerDay);
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}
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try {
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final tasksJson = tasks
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.map((t) => {
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'title': t.title,
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'estimatedHours': t.estimatedHours,
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'priority': t.priority.name,
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'dueDate': t.dueDate?.toIso8601String(),
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})
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.toList();
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final response = await http.post(
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Uri.parse('$baseUrl/v1/chat/completions'),
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headers: {
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'Content-Type': 'application/json',
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'Authorization': 'Bearer $apiKey',
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},
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body: jsonEncode({
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'model': 'deepseek-chat',
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'messages': [
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{
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'role': 'system',
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'content':
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'You are a smart scheduling assistant. Distribute tasks across available days optimally. Return ONLY a JSON array.',
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},
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{
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'role': 'user',
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'content': '''
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Schedule these tasks optimally:
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${jsonEncode(tasksJson)}
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Available hours per day: $availableHoursPerDay
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Start date: ${startDate.toIso8601String()}
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End date: ${endDate.toIso8601String()}
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Return JSON array: [{"taskId": index, "date": "YYYY-MM-DD", "hours": 0}]
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''',
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},
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],
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'temperature': 0.5,
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'max_tokens': 3000,
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}),
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);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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final content = data['choices'][0]['message']['content'];
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final jsonMatch = RegExp(r'\[.*\]', dotAll: true).firstMatch(content);
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if (jsonMatch != null) {
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final List<dynamic> schedule = jsonDecode(jsonMatch.group(0)!);
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return schedule.map((s) {
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return {
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'taskId': s['taskId'],
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'date': DateTime.parse(s['date']),
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'hours': s['hours'],
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};
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}).toList();
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}
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}
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} catch (e) {
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print('DeepSeek Service Error: $e');
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}
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return _mockSchedule(tasks, startDate, endDate, availableHoursPerDay);
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}
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// AI анализ проекта - генерация mind-карты
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Future<List<Map<String, dynamic>>> generateMindMap({
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required String projectName,
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required String description,
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}) async {
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if (apiKey == null || apiKey!.isEmpty) {
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return _mockMindMap(projectName);
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}
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try {
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final response = await http.post(
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Uri.parse('$baseUrl/v1/chat/completions'),
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headers: {
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'Content-Type': 'application/json',
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'Authorization': 'Bearer $apiKey',
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},
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body: jsonEncode({
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'model': 'deepseek-chat',
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'messages': [
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{
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'role': 'system',
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'content':
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'You are a project structure assistant. Create a mind-map structure for projects. Return ONLY a JSON array of nodes.',
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},
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{
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'role': 'user',
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'content': '''
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Create a mind-map structure for this project:
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Project: $projectName
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Description: $description
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Return JSON array of nodes with format:
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[{"level": 0, "title": "Project Name", "parentId": null}, {"level": 1, "title": "Phase 1", "parentId": 0}, ...]
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''',
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},
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],
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'temperature': 0.7,
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'max_tokens': 3000,
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}),
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);
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if (response.statusCode == 200) {
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final data = jsonDecode(response.body);
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final content = data['choices'][0]['message']['content'];
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final jsonMatch = RegExp(r'\[.*\]', dotAll: true).firstMatch(content);
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if (jsonMatch != null) {
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final List<dynamic> nodes = jsonDecode(jsonMatch.group(0)!);
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return nodes.cast<Map<String, dynamic>>();
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}
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}
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} catch (e) {
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print('DeepSeek Service Error: $e');
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}
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return _mockMindMap(projectName);
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}
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// Mock данные для тестирования
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List<Map<String, dynamic>> _mockGenerateSubtasks(
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String title, String description) {
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return [
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{
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'title': 'Анализ требований',
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'estimatedHours': 2,
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'description': 'Изучить требования и документацию'
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},
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{
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'title': 'Проектирование',
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'estimatedHours': 3,
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'description': 'Спроектировать архитектуру решения'
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},
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{
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'title': 'Реализация',
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'estimatedHours': 8,
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'description': 'Написать код'
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},
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{
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'title': 'Тестирование',
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'estimatedHours': 3,
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'description': 'Протестировать функциональность'
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},
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{
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'title': 'Документирование',
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'estimatedHours': 2,
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'description': 'Создать документацию'
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},
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];
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}
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TaskPriority _mockPrioritizeTask(DateTime? dueDate) {
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if (dueDate == null) return TaskPriority.medium;
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final daysUntilDue = dueDate.difference(DateTime.now()).inDays;
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if (daysUntilDue <= 1) return TaskPriority.urgent;
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if (daysUntilDue <= 3) return TaskPriority.high;
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if (daysUntilDue <= 7) return TaskPriority.medium;
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return TaskPriority.low;
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}
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List<Map<String, dynamic>> _mockSchedule(
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List<TaskModel> tasks,
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DateTime startDate,
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DateTime endDate,
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int availableHoursPerDay,
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) {
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final schedule = <Map<String, dynamic>>[];
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var currentDate = startDate;
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var remainingHours = availableHoursPerDay;
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for (var i = 0; i < tasks.length; i++) {
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if (currentDate.isAfter(endDate)) break;
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final task = tasks[i];
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if (task.estimatedHours <= remainingHours) {
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schedule.add({
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'taskId': i,
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'date': currentDate,
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'hours': task.estimatedHours,
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});
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remainingHours -= task.estimatedHours;
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} else {
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currentDate = currentDate.add(const Duration(days: 1));
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remainingHours = availableHoursPerDay;
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if (currentDate.isAfter(endDate)) break;
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schedule.add({
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'taskId': i,
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'date': currentDate,
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'hours': task.estimatedHours > remainingHours
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? remainingHours
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: task.estimatedHours,
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});
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}
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}
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return schedule;
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}
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List<Map<String, dynamic>> _mockMindMap(String projectName) {
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return [
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{'level': 0, 'title': projectName, 'parentId': null},
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{'level': 1, 'title': 'Планирование', 'parentId': 0},
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{'level': 1, 'title': 'Разработка', 'parentId': 0},
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{'level': 1, 'title': 'Тестирование', 'parentId': 0},
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{'level': 1, 'title': 'Деплой', 'parentId': 0},
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{'level': 2, 'title': 'Анализ', 'parentId': 1},
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{'level': 2, 'title': 'Дизайн', 'parentId': 1},
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{'level': 2, 'title': 'Frontend', 'parentId': 2},
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{'level': 2, 'title': 'Backend', 'parentId': 2},
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{'level': 2, 'title': 'Unit тесты', 'parentId': 3},
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{'level': 2, 'title': 'E2E тесты', 'parentId': 3},
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];
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}
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}
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// Глобальный экземпляр сервиса
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final deepSeekService = DeepSeekService(
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// API ключ из .env файла
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apiKey: dotenv.env['DEEPSEEK_API_KEY'],
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);
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