import {
  passwordMatchValidator,
  buildPasswordPolicyMessage,
} from '../../frontend/src/app/features/shell/change-password/change-password-modal.validators';
import { formatChangePasswordError } from '../../frontend/src/app/features/shell/change-password/password-feedback';

describe('passwordMatchValidator', () => {
  const grp = (newP: string, conf: string) => ({
    get: (k: string) =>
      k === 'newPassword' ? { value: newP } : k === 'confirmNewPassword' ? { value: conf } : { value: '' },
  });

  it('returns null when both inputs are equal', () => {
    expect(passwordMatchValidator(grp('Abc123!Xyz', 'Abc123!Xyz'))).toBeNull();
  });

  it('returns {passwordMismatch:true} when inputs differ', () => {
    expect(passwordMatchValidator(grp('Abc123!Xyz', 'Other1!Pass'))).toEqual({ passwordMismatch: true });
  });

  it('returns null when either input is empty (handled by required validators)', () => {
    expect(passwordMatchValidator(grp('', ''))).toBeNull();
    expect(passwordMatchValidator(grp('Abc', ''))).toBeNull();
  });
});

describe('buildPasswordPolicyMessage', () => {
  it('returns the policy description verbatim', () => {
    expect(buildPasswordPolicyMessage({ minLength: 12, requireMixed: true, description: 'foo bar' })).toBe('foo bar');
  });
});

describe('formatChangePasswordError', () => {
  it('maps INVALID_OLD_PASSWORD to a clear message', () => {
    expect(formatChangePasswordError({ code: 'INVALID_OLD_PASSWORD' })).toBe('Old password is incorrect');
  });

  it('maps PASSWORDS_DO_NOT_MATCH', () => {
    expect(formatChangePasswordError({ code: 'PASSWORDS_DO_NOT_MATCH' })).toBe('New password and confirmation do not match');
  });

  it('maps PASSWORD_POLICY and surfaces server message if present', () => {
    expect(formatChangePasswordError({ code: 'PASSWORD_POLICY', message: 'too short' })).toBe('too short');
    expect(formatChangePasswordError({ code: 'PASSWORD_POLICY' })).toBe('New password does not meet the policy requirements');
  });

  it('maps UNAUTHORIZED', () => {
    expect(formatChangePasswordError({ code: 'UNAUTHORIZED' })).toBe('You must be signed in to change your password');
  });

  it('falls back to message or default for unknown codes', () => {
    expect(formatChangePasswordError({ code: 'EXOTIC', message: 'Quux' })).toBe('Quux');
    expect(formatChangePasswordError({ code: 'EXOTIC' })).toBe('Failed to change password');
  });

  it('handles null/undefined code and message', () => {
    expect(formatChangePasswordError({ code: null, message: null })).toBe('Failed to change password');
  });
});