import 'package:dio/dio.dart';
import '../domain/project.dart';
import '../domain/project_task.dart';
import 'dart:convert';
import '../domain/project_task_comment.dart';

class ProjectRepository {
  final Dio _dio;

  ProjectRepository(this._dio);

  Future<List<Project>> getProjects() async {
    try {
      final response = await _dio.get('/projects');
      if (response.data == null) return [];
      return (response.data as List).map((p) => Project.fromJson(p)).toList();
    } on DioException catch (e) {
      if (e.response?.statusCode == 404) {
        throw Exception("Projects API endpoint not found. Please ensure the backend server is updated to the latest Docker image.");
      }
      throw Exception(e.message ?? 'Unknown error fetching projects');
    }
  }

  Future<Project> createProject({
    required String name,
    String? description,
    int? customerId,
    double? budget,
  }) async {
    final response = await _dio.post('/projects', data: {
      'name': name,
      if (description != null) 'description': description,
      if (customerId != null) 'customerId': customerId,
      if (budget != null) 'budget': budget,
    });
    return Project.fromJson(response.data);
  }

  Future<Project> updateProject({
    required int projectId,
    String? name,
    String? description,
    int? customerId,
    double? budget,
    String? status,
  }) async {
    final response = await _dio.put('/projects/$projectId', data: {
      if (name != null) 'name': name,
      if (description != null) 'description': description,
      if (customerId != null) 'customerId': customerId,
      if (budget != null) 'budget': budget,
      if (status != null) 'status': status,
    });
    return Project.fromJson(response.data);
  }

  Future<void> deleteProject(int projectId) async {
    await _dio.delete('/projects/$projectId');
  }

  Future<List<ProjectTask>> getTasks(int projectId) async {
    final response = await _dio.get('/projects/$projectId/tasks');
    return (response.data as List).map((t) => ProjectTask.fromJson(t)).toList();
  }

  Future<ProjectTask> createTask({
    required int projectId,
    required String title,
    String? description,
    String? assigneeName,
    int? assigneeUserId,
    bool? isBillable,
    double? hourlyRate,
  }) async {
    final response = await _dio.post('/projects/$projectId/tasks', data: {
      'title': title,
      if (description != null) 'description': description,
      if (assigneeName != null) 'assigneeName': assigneeName,
      if (assigneeUserId != null) 'assigneeUserId': assigneeUserId,
      if (isBillable != null) 'isBillable': isBillable,
      if (hourlyRate != null) 'hourlyRate': hourlyRate,
    });
    return ProjectTask.fromJson(response.data);
  }

  Future<ProjectTask> updateTask({
    required int taskId,
    String? title,
    String? description,
    String? assigneeName,
    int? assigneeUserId,
    String? status,
    bool? isBillable,
    double? hourlyRate,
    double? hoursLogged,
  }) async {
    final response = await _dio.put('/projects/tasks/$taskId', data: {
      if (title != null) 'title': title,
      if (description != null) 'description': description,
      if (assigneeName != null) 'assigneeName': assigneeName,
      if (assigneeUserId != null) 'assigneeUserId': assigneeUserId,
      if (status != null) 'status': status,
      if (isBillable != null) 'isBillable': isBillable,
      if (hourlyRate != null) 'hourlyRate': hourlyRate,
      if (hoursLogged != null) 'hoursLogged': hoursLogged,
    });
    return ProjectTask.fromJson(response.data);
  }

  Future<void> deleteTask(int taskId) async {
    await _dio.delete('/projects/tasks/$taskId');
  }
Future<List<ProjectTaskComment>> getComments(int taskId) async {
    final response = await _dio.get('/projects/tasks/$taskId/comments');
    return (response.data as List).map((c) => ProjectTaskComment.fromJson(c)).toList();
  }

  Future<ProjectTaskComment> addComment({
    required int taskId,
    required String content,
    List<String>? imagesBase64,
  }) async {
    final response = await _dio.post('/projects/tasks/$taskId/comments', data: {
      'content': content,
      if (imagesBase64 != null && imagesBase64.isNotEmpty)
        'imagesJson': jsonEncode(imagesBase64),
    });
    return ProjectTaskComment.fromJson(response.data);
  }
}