import { Decimal } from 'decimal.js';
import { describe, expect, it } from 'vitest';
import { Bloc } from '../../src/domain/bloc.js';
import { Formation } from '../../src/domain/formation.js';

describe('Formation', () => {
  it('cree une formation valide', () => {
    const f = new Formation({ id: 1, nom: 'BTS SIO', heuresTotales: new Decimal(1400) });
    expect(f.statut).toBe('draft');
    expect(f.heuresRestantes().toNumber()).toBe(1400);
  });

  it('throw si heuresTotales < 0', () => {
    expect(() => new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(-1) })).toThrow();
  });

  it('throw si dateFin < dateDebut', () => {
    expect(
      () =>
        new Formation({
          id: 1,
          nom: 'X',
          heuresTotales: new Decimal(100),
          dateDebut: new Date('2026-09-01'),
          dateFin: new Date('2026-08-01'),
        }),
    ).toThrow();
  });

  it('activer / archiver transitions', () => {
    const f = new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(100) });
    f.activer();
    expect(f.statut).toBe('actif');
    f.archiver();
    expect(f.statut).toBe('archive');
  });

  it('activer apres archive est interdit', () => {
    const f = new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(100) });
    f.archiver();
    expect(() => f.activer()).toThrow();
  });

  it('ajouterBloc + heuresRestantes rollup', () => {
    const f = new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(300) });
    const b1 = new Bloc({ id: 1, formationId: 1, nom: 'B1', heuresPrevues: new Decimal(100) });
    const b2 = new Bloc({ id: 2, formationId: 1, nom: 'B2', heuresPrevues: new Decimal(150) });
    f.ajouterBloc(b1);
    f.ajouterBloc(b2);
    expect(f.heuresAttribuees().toNumber()).toBe(250);
    expect(f.heuresRestantes().toNumber()).toBe(50);
  });

  it('throw si bloc duplique', () => {
    const f = new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(300) });
    const b = new Bloc({ id: 1, formationId: 1, nom: 'B1', heuresPrevues: new Decimal(100) });
    f.ajouterBloc(b);
    expect(() => f.ajouterBloc(b)).toThrow(/deja present/);
  });

  it('throw si depassement capacite formation', () => {
    const f = new Formation({ id: 1, nom: 'X', heuresTotales: new Decimal(100) });
    const b = new Bloc({ id: 1, formationId: 1, nom: 'B1', heuresPrevues: new Decimal(150) });
    expect(() => f.ajouterBloc(b)).toThrow(/depassee/);
  });
});