library titama.server;

import 'package:rpc/rpc.dart';

import '../common/messages.dart';
import './titamaio.dart';

@ApiClass(version: 'v1')
class TitamaApi {

  List<Course> _courses = new List<Course>();

  TitamaApi(List<Course> courses) {
    // assign saved courses to list
    _courses = courses;
  }

  @ApiMethod(path: 'courses')
  List<Course> listCourses() {
    if (_courses.isEmpty) {
      throw new NotFoundError('Could not find any courses.');
    }
    return _courses;
  }

  @ApiMethod(path: 'course/{id}')
  Course getCourse(int id) {
    for (Course course in _courses) {
      if (course.id == id) {
        return course;
      }
    }
    throw new NotFoundError('Could not find course \'$id\'.');
  }

  @ApiMethod(method: 'DELETE', path: 'course/{id}')
  List<Course> deleteCourse(int id) {
    _courses.removeWhere((course) => course.id == id);

    new TitamaIo().writeJson(_courses);

    return _courses;
  }

  @ApiMethod(method: 'POST', path: 'course')
  Course addCourse (Course newCourse) {
    newCourse.id = _courses.length;
    _courses.add(newCourse);

    new TitamaIo().writeJson(_courses);

    return newCourse;
  }

  @ApiMethod(method: 'PUT', path: 'course/{id}')
  Course updateCourse(int id, Course course) {
    course.id = id;
    int index =  _courses.indexOf(_courses.singleWhere((crs) => crs.id == id));
    _courses.replaceRange(index, index + 1, [course]);

    new TitamaIo().writeJson(_courses);

    return course;
  }
}