// Shared user form view-model helpers.

function normalizeSelectedRoleIds(selectedRoleIds) {
  return new Set((Array.isArray(selectedRoleIds) ? selectedRoleIds : []).map(function (roleId) {
    return Number(roleId);
  }).filter(function (roleId) {
    return Number.isInteger(roleId) && roleId > 0;
  }));
}

function mapRolesForForm(roles, selectedRoleIds) {
  const selectedIds = normalizeSelectedRoleIds(selectedRoleIds);

  return (Array.isArray(roles) ? roles : []).map(function (role) {
    return Object.assign({}, role, {
      isSelected: selectedIds.has(Number(role.id))
    });
  });
}

function buildUsersAddViewModel(message, currentUser, roles, formValues, messageVariant) {
  return {
    title: 'Add user',
    active: 'users',
    userManagementMenuOpen: true,
    isEdit: false,
    formId: 'user-form',
    formAction: '/settings/users',
    footerSaveUrl: '/settings/users',
    footerCancelUrl: '/settings/users',
    footerDeleteUrl: '',
    footerDeleteDisabled: true,
    footerDeleteTitle: 'Delete is available after the user has been created.',
    footerShowDelete: true,
    message: message,
    messageVariant: messageVariant || 'success',
    currentUser: currentUser || null,
    roles: mapRolesForForm(roles, []),
    formValues: formValues || {},
    formAttrs: 'data-async-save data-async-save-close-url="/settings/users" data-async-save-new-redirect="response-url" data-async-save-new-url="/settings/users/new"'
  };
}

function buildUsersEditViewModel(user, message, currentUser, roles, sessions) {
  return {
    title: 'Edit user',
    active: 'users',
    userManagementMenuOpen: true,
    isEdit: true,
    formId: 'user-profile-form',
    formAction: '/settings/users/' + user.id + '/username',
    formAttrs: 'data-async-save data-async-save-close-url="/settings/users"',
    footerSaveUrl: '/settings/users/' + user.id + '/username',
    footerCancelUrl: '/settings/users',
    footerDeleteUrl: '/settings/users/' + user.id + '/delete',
    footerDeleteDisabled: Boolean(user && user.inUse),
    footerDeleteConfirmMessage: 'Delete this user?',
    footerDeleteTitle: user && user.inUse ? 'Delete is disabled while this user is the only account left.' : '',
    footerShowDelete: true,
    showSaveSecondaryActions: true,
    message: message,
    currentUser: currentUser || null,
    user: user,
    sessions: Array.isArray(sessions) ? sessions : [],
    inUse: Boolean(user && user.inUse),
    roles: mapRolesForForm(roles, user && user.roleIds),
    formAttrs: 'data-async-save data-async-save-close-url="/settings/users" data-async-save-new-url="/settings/users/new"'
  };
}

module.exports = {
  mapRolesForForm: mapRolesForForm,
  buildUsersAddViewModel: buildUsersAddViewModel,
  buildUsersEditViewModel: buildUsersEditViewModel
};