src/TaxReturn.ts

   1 import Form from './Form';
   2 import { Person, Relation } from './Person';
   3 import { NotFoundError, InconsistencyError, UnsupportedFeatureError } from './Errors';
   4
   5 export default class TaxReturn {
   6   private _year: number;
   7   private _people: Person[] = [];
   8   private _forms: Form[] = [];
   9
  10   constructor(year: number) {
  11     this._year = year;
  12   }
  13
  14   get year(): number {
  15     return this._year;
  16   }
  17
  18   addPerson(person: Person) {
  19     if (person.relation == Relation.Dependent) {
  20       throw new UnsupportedFeatureError('Dependents are not supported');
  21     }
  22     if (person.relation == Relation.Self || person.relation == Relation.Spouse) {
  23       const others = this._people.filter(p => p.relation == person.relation);
  24       if (others.length > 0) {
  25         throw new InconsistencyError('Cannot have more than one Self or Spouse');
  26       }
  27     }
  28     this._people.push(person);
  29   }
  30
  31   getPerson(name: RegExp | string): Person {
  32     const people = this._people.filter(p => p.name.search(name) !== -1);
  33     if (people.length != 1) {
  34       throw new Error(`Person ${name} not found or too imprecise`);
  35     }
  36     return people[0];
  37   }
  38
  39   addForm(form: Form) {
  40     if (!form.allowMultipleCopies) {
  41       const other = this.getForms(form.name);
  42       if (other.length > 0) {
  43         throw new InconsistencyError(`Cannot have more than one type of form ${form.name}`);
  44       }
  45     }
  46     this._forms.push(form);
  47   }
  48
  49   getForm(name: string): Form {
  50     const forms = this.getForms(name);
  51     if (forms.length == 0) {
  52       throw new NotFoundError(`No form named ${name}`);
  53     }
  54     if (forms.length > 1) {
  55       throw new InconsistencyError(`More than 1 form named ${name}`);
  56     }
  57     return forms[0];
  58   }
  59
  60   getForms(name: string): Form[] {
  61     return this._forms.filter(f => f.name == name);
  62   }
  63 };