import '@angular/compiler';
import { FormBuilder, FormControl, FormGroup } from '@angular/forms';
import {
  syncCategoryForm,
  CategoryFormMode,
} from '../../frontend/src/app/features/admin/categories/category-form-modal.component';
import { AdminCategory } from '../../frontend/src/app/core/services/admin.service';

function buildForm(): FormGroup<{
  name: FormControl<string>;
  abbreviation: FormControl<string>;
  description: FormControl<string>;
}> {
  const fb = new FormBuilder();
  return fb.nonNullable.group({
    name: fb.nonNullable.control('', []),
    abbreviation: fb.nonNullable.control('', []),
    description: fb.nonNullable.control(''),
  });
}

function makeRow(overrides: Partial<AdminCategory> = {}): AdminCategory {
  return {
    id: 'row-1',
    name: 'Cryptography',
    abbreviation: 'CRY',
    description: 'Cryptographic challenges',
    iconPath: '',
    isSystem: true,
    systemKey: 'CRY',
    createdAt: '',
    updatedAt: '',
    ...overrides,
  };
}

describe('syncCategoryForm - edit prefill', () => {
  it('populates name, abbreviation, description for a system row and locks abbreviation', () => {
    const form = buildForm();
    const result = syncCategoryForm(form, 'edit', makeRow());

    expect(form.controls.name.value).toBe('Cryptography');
    expect(form.controls.abbreviation.value).toBe('CRY');
    expect(form.controls.description.value).toBe('Cryptographic challenges');
    expect(result.abbreviationReadonly).toBe(true);
    expect(result.iconPreview).toBeNull();
  });

  it('does not lock abbreviation for a user (non-system) row', () => {
    const form = buildForm();
    const result = syncCategoryForm(
      form,
      'edit',
      makeRow({
        name: 'Misc',
        abbreviation: 'MSC',
        description: 'Other',
        isSystem: false,
        systemKey: null,
      }),
    );

    expect(form.controls.name.value).toBe('Misc');
    expect(form.controls.abbreviation.value).toBe('MSC');
    expect(form.controls.description.value).toBe('Other');
    expect(result.abbreviationReadonly).toBe(false);
  });

  it('re-populates when invoked a second time with a different category', () => {
    const form = buildForm();
    syncCategoryForm(
      form,
      'edit',
      makeRow({ name: 'Alpha', abbreviation: 'AAA', description: 'first', isSystem: false, systemKey: null }),
    );
    expect(form.controls.name.value).toBe('Alpha');
    expect(form.controls.abbreviation.value).toBe('AAA');

    const result = syncCategoryForm(
      form,
      'edit',
      makeRow({ name: 'Bravo', abbreviation: 'BBB', description: 'second', isSystem: false, systemKey: null }),
    );

    expect(form.controls.name.value).toBe('Bravo');
    expect(form.controls.abbreviation.value).toBe('BBB');
    expect(form.controls.description.value).toBe('second');
    expect(result.abbreviationReadonly).toBe(false);
  });

  it('clears the form when invoked with mode="create" and a null category', () => {
    const form = buildForm();
    syncCategoryForm(form, 'edit', makeRow());
    expect(form.controls.name.value).toBe('Cryptography');

    const result = syncCategoryForm(form, 'create', null);

    expect(form.controls.name.value).toBe('');
    expect(form.controls.abbreviation.value).toBe('');
    expect(form.controls.description.value).toBe('');
    expect(result.abbreviationReadonly).toBe(false);
    expect(result.iconPreview).toBeNull();
  });

  it('marks controls as pristine and untouched after prefill', () => {
    const form = buildForm();
    syncCategoryForm(form, 'edit', makeRow());
    expect(form.controls.name.pristine).toBe(true);
    expect(form.controls.name.touched).toBe(false);
    expect(form.controls.abbreviation.pristine).toBe(true);
    expect(form.controls.abbreviation.touched).toBe(false);
    expect(form.controls.description.pristine).toBe(true);
    expect(form.controls.description.touched).toBe(false);
  });

  it('returns iconPreview from category.iconPath when set', () => {
    const form = buildForm();
    const result = syncCategoryForm(
      form,
      'edit',
      makeRow({ iconPath: '/uploads/icons/cry.png' }),
    );
    expect(result.iconPreview).toBe('/uploads/icons/cry.png');
  });
});