<?php

final class PhabricatorPeopleEditController
  extends PhabricatorPeopleController {

  private $id;
  private $view;

  public function willProcessRequest(array $data) {
    $this->id = idx($data, 'id');
    $this->view = idx($data, 'view');
  }

  public function processRequest() {

    $request = $this->getRequest();
    $admin = $request->getUser();

    $crumbs = $this->buildApplicationCrumbs($this->buildSideNavView());
    if ($this->id) {
      $user = id(new PhabricatorUser())->load($this->id);
      if (!$user) {
        return new Aphront404Response();
      }
      $base_uri = '/people/edit/'.$user->getID().'/';
      $crumbs->addTextCrumb(pht('Edit User'), '/people/edit/');
      $crumbs->addTextCrumb($user->getFullName(), $base_uri);
    } else {
      $user = new PhabricatorUser();
      $base_uri = '/people/edit/';
      $crumbs->addTextCrumb(pht('Create New User'), $base_uri);
    }

    $nav = new AphrontSideNavFilterView();
    $nav->setBaseURI(new PhutilURI($base_uri));
    $nav->addLabel(pht('User Information'));
    $nav->addFilter('basic', pht('Basic Information'));
    $nav->addFilter('role', pht('Edit Roles'));
    $nav->addFilter('cert', pht('Conduit Certificate'));
    $nav->addFilter('profile',
      pht('View Profile'), '/p/'.$user->getUsername().'/');
    $nav->addLabel(pht('Special'));
    $nav->addFilter('rename', pht('Change Username'));
    if ($user->getIsSystemAgent()) {
      $nav->addFilter('picture', pht('Set Account Picture'));
    }
    $nav->addFilter('delete', pht('Delete User'));

    if (!$user->getID()) {
      $this->view = 'basic';
    }

    $view = $nav->selectFilter($this->view, 'basic');

    $content = array();

    if ($request->getStr('saved')) {
      $notice = new AphrontErrorView();
      $notice->setSeverity(AphrontErrorView::SEVERITY_NOTICE);
      $notice->setTitle(pht('Changes Saved'));
      $notice->appendChild(
        phutil_tag('p', array(), pht('Your changes were saved.')));
      $content[] = $notice;
    }

    switch ($view) {
      case 'basic':
        $response = $this->processBasicRequest($user);
        break;
      case 'role':
        $response = $this->processRoleRequest($user);
        break;
      case 'cert':
        $response = $this->processCertificateRequest($user);
        break;
      case 'rename':
        $response = $this->processRenameRequest($user);
        break;
      case 'picture':
        $response = $this->processSetAccountPicture($user);
        break;
      case 'delete':
        $response = $this->processDeleteRequest($user);
        break;
      default:
        return new Aphront404Response();
    }

    if ($response instanceof AphrontResponse) {
      return $response;
    }

    $content[] = $response;

    if ($user->getID()) {
      $nav->appendChild($content);
    } else {
      $nav = $this->buildSideNavView();
      $nav->selectFilter('edit');
      $nav->appendChild($content);
    }

    $nav->setCrumbs($crumbs);
    return $this->buildApplicationPage(
      $nav,
      array(
        'title' => pht('Edit User'),
        'device' => true,
      ));
  }

  private function processBasicRequest(PhabricatorUser $user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $e_username = true;
    $e_realname = true;
    $e_email    = true;
    $errors = array();

    $welcome_checked = true;

    $new_email = null;

    $request = $this->getRequest();
    if ($request->isFormPost()) {
      $welcome_checked = $request->getInt('welcome');
      $is_new = !$user->getID();

      if ($is_new) {
        $user->setUsername($request->getStr('username'));

        $new_email = $request->getStr('email');
        if (!strlen($new_email)) {
          $errors[] = pht('Email is required.');
          $e_email = pht('Required');
        } else if (!PhabricatorUserEmail::isAllowedAddress($new_email)) {
          $e_email = pht('Invalid');
          $errors[] = PhabricatorUserEmail::describeAllowedAddresses();
        } else {
          $e_email = null;
        }

      }
      $user->setRealName($request->getStr('realname'));

      if (!strlen($user->getUsername())) {
        $errors[] = pht("Username is required.");
        $e_username = pht('Required');
      } else if (!PhabricatorUser::validateUsername($user->getUsername())) {
        $errors[] = PhabricatorUser::describeValidUsername();
        $e_username = pht('Invalid');
      } else {
        $e_username = null;
      }

      if (!strlen($user->getRealName())) {
        $errors[] = pht('Real name is required.');
        $e_realname = pht('Required');
      } else {
        $e_realname = null;
      }

      if (!$errors) {
        try {

          if (!$is_new) {
            id(new PhabricatorUserEditor())
              ->setActor($admin)
              ->updateUser($user);
          } else {
            $email = id(new PhabricatorUserEmail())
              ->setAddress($new_email)
              ->setIsVerified(0);

            // Automatically approve the user, since an admin is creating them.
            $user->setIsApproved(1);

            id(new PhabricatorUserEditor())
              ->setActor($admin)
              ->createNewUser($user, $email);

            if ($request->getStr('role') == 'agent') {
              id(new PhabricatorUserEditor())
                ->setActor($admin)
                ->makeSystemAgentUser($user, true);
            }

          }

          if ($welcome_checked) {
            $user->sendWelcomeEmail($admin);
          }

          $response = id(new AphrontRedirectResponse())
            ->setURI('/people/edit/'.$user->getID().'/?saved=true');
          return $response;
        } catch (AphrontQueryDuplicateKeyException $ex) {
          $errors[] = pht('Username and email must be unique.');

          $same_username = id(new PhabricatorUser())
            ->loadOneWhere('username = %s', $user->getUsername());
          $same_email = id(new PhabricatorUserEmail())
            ->loadOneWhere('address = %s', $new_email);

          if ($same_username) {
            $e_username = pht('Duplicate');
          }

          if ($same_email) {
            $e_email = pht('Duplicate');
          }
        }
      }
    }

    $error_view = null;
    if ($errors) {
      $error_view = id(new AphrontErrorView())
        ->setTitle(pht('Form Errors'))
        ->setErrors($errors);
    }

    $form = new AphrontFormView();
    $form->setUser($admin);
    if ($user->getID()) {
      $form->setAction('/people/edit/'.$user->getID().'/');
    } else {
      $form->setAction('/people/edit/');
    }

    if ($user->getID()) {
      $is_immutable = true;
    } else {
      $is_immutable = false;
    }

    $form
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('Username'))
          ->setName('username')
          ->setValue($user->getUsername())
          ->setError($e_username)
          ->setDisabled($is_immutable))
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('Real Name'))
          ->setName('realname')
          ->setValue($user->getRealName())
          ->setError($e_realname));

    if (!$user->getID()) {
      $form->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('Email'))
          ->setName('email')
          ->setDisabled($is_immutable)
          ->setValue($new_email)
          ->setCaption(PhabricatorUserEmail::describeAllowedAddresses())
          ->setError($e_email));
    } else {
      $email = $user->loadPrimaryEmail();
      if ($email) {
        $status = $email->getIsVerified() ?
          pht('Verified') : pht('Unverified');
      } else {
        $status = pht('No Email Address');
      }

      $form->appendChild(
        id(new AphrontFormStaticControl())
          ->setLabel(pht('Email'))
          ->setValue($status));

      $form->appendChild(
        id(new AphrontFormCheckboxControl())
        ->addCheckbox(
          'welcome',
          1,
          pht('Re-send "Welcome to Phabricator" email.'),
          false));

    }

    $form->appendChild($this->getRoleInstructions());

    if (!$user->getID()) {
      $form
        ->appendChild(
          id(new AphrontFormSelectControl())
            ->setLabel(pht('Role'))
            ->setName('role')
            ->setValue('user')
            ->setOptions(
              array(
                'user'  => pht('Normal User'),
                'agent' => pht('System Agent'),
              ))
            ->setCaption(
              pht('You can create a "system agent" account for bots, '.
              'scripts, etc.')))
        ->appendChild(
          id(new AphrontFormCheckboxControl())
            ->addCheckbox(
              'welcome',
              1,
              pht('Send "Welcome to Phabricator" email.'),
              $welcome_checked));
    } else {
      $roles = array();

      if ($user->getIsSystemAgent()) {
        $roles[] = pht('System Agent');
      }
      if ($user->getIsAdmin()) {
        $roles[] = pht('Admin');
      }
      if ($user->getIsDisabled()) {
        $roles[] = pht('Disabled');
      }
      if (!$user->getIsApproved()) {
        $roles[] = pht('Not Approved');
      }
      if (!$roles) {
        $roles[] = pht('Normal User');
      }

      $roles = implode(', ', $roles);

      $form->appendChild(
        id(new AphrontFormStaticControl())
          ->setLabel(pht('Roles'))
          ->setValue($roles));
    }

    $form
      ->appendChild(
        id(new AphrontFormSubmitControl())
          ->setValue(pht('Save')));

    if ($user->getID()) {
      $title = pht('Edit User');
    } else {
      $title = pht('Create New User');
    }

    $form_box = id(new PHUIObjectBoxView())
      ->setHeaderText($title)
      ->setFormError($error_view)
      ->setForm($form);

    return array($form_box);
  }

  private function processRoleRequest(PhabricatorUser $user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $is_self = ($user->getID() == $admin->getID());

    $errors = array();

    if ($request->isFormPost()) {

      $log_template = PhabricatorUserLog::newLog(
        $admin,
        $user,
        null);

      $logs = array();

      if ($is_self) {
        $errors[] = pht("You can not edit your own role.");
      } else {
        $new_admin = (bool)$request->getBool('is_admin');
        $old_admin = (bool)$user->getIsAdmin();
        if ($new_admin != $old_admin) {
          id(new PhabricatorUserEditor())
            ->setActor($admin)
            ->makeAdminUser($user, $new_admin);
        }

        $new_disabled = (bool)$request->getBool('is_disabled');
        $old_disabled = (bool)$user->getIsDisabled();
        if ($new_disabled != $old_disabled) {
          id(new PhabricatorUserEditor())
            ->setActor($admin)
            ->disableUser($user, $new_disabled);
        }
      }

      if (!$errors) {
        return id(new AphrontRedirectResponse())
          ->setURI($request->getRequestURI()->alter('saved', 'true'));
      }
    }

    $error_view = null;
    if ($errors) {
      $error_view = id(new AphrontErrorView())
        ->setTitle(pht('Form Errors'))
        ->setErrors($errors);
    }


    $form = id(new AphrontFormView())
      ->setUser($admin)
      ->setAction($request->getRequestURI()->alter('saved', null));

    if ($is_self) {
      $inst = pht('NOTE: You can not edit your own role.');
      $form->appendChild(
        phutil_tag('p', array('class' => 'aphront-form-instructions'), $inst));
    }

    $form
      ->appendChild($this->getRoleInstructions())
      ->appendChild(
        id(new AphrontFormCheckboxControl())
          ->addCheckbox(
            'is_admin',
            1,
            pht('Administrator'),
            $user->getIsAdmin())
          ->setDisabled($is_self))
      ->appendChild(
        id(new AphrontFormCheckboxControl())
          ->addCheckbox(
            'is_disabled',
            1,
            pht('Disabled'),
            $user->getIsDisabled())
          ->setDisabled($is_self))
      ->appendChild(
        id(new AphrontFormCheckboxControl())
          ->addCheckbox(
            'is_agent',
            1,
            pht('System Agent (Bot/Script User)'),
            $user->getIsSystemAgent())
          ->setDisabled(true));

    if (!$is_self) {
      $form
        ->appendChild(
          id(new AphrontFormSubmitControl())
            ->setValue(pht('Edit Role')));
    }

    $title = pht('Edit Role');

    $form_box = id(new PHUIObjectBoxView())
      ->setHeaderText($title)
      ->setFormError($error_view)
      ->setForm($form);

    return array($form_box);
  }

  private function processCertificateRequest($user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $inst = pht('You can use this certificate '.
        'to write scripts or bots which interface with Phabricator over '.
        'Conduit.');
    $form = new AphrontFormView();
    $form
      ->setUser($admin)
      ->setAction($request->getRequestURI())
      ->appendChild(
        phutil_tag('p', array('class' => 'aphront-form-instructions'), $inst));

    if ($user->getIsSystemAgent()) {
      $form
        ->appendChild(
          id(new AphrontFormTextControl())
            ->setLabel(pht('Username'))
            ->setValue($user->getUsername()))
        ->appendChild(
          id(new AphrontFormTextAreaControl())
            ->setLabel(pht('Certificate'))
            ->setValue($user->getConduitCertificate()));
    } else {
      $form->appendChild(
        id(new AphrontFormStaticControl())
          ->setLabel(pht('Certificate'))
          ->setValue(
            pht('You may only view the certificates of System Agents.')));
    }

    $title = pht('Conduit Certificate');

    $form_box = id(new PHUIObjectBoxView())
      ->setHeaderText($title)
      ->setForm($form);

    return array($form_box);
  }

  private function processRenameRequest(PhabricatorUser $user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $e_username = true;
    $username = $user->getUsername();

    $errors = array();
    if ($request->isFormPost()) {

      $username = $request->getStr('username');
      if (!strlen($username)) {
        $e_username = pht('Required');
        $errors[] = pht('New username is required.');
      } else if ($username == $user->getUsername()) {
        $e_username = pht('Invalid');
        $errors[] = pht('New username must be different from old username.');
      } else if (!PhabricatorUser::validateUsername($username)) {
        $e_username = pht('Invalid');
        $errors[] = PhabricatorUser::describeValidUsername();
      }

      if (!$errors) {
        try {

          id(new PhabricatorUserEditor())
            ->setActor($admin)
            ->changeUsername($user, $username);

          return id(new AphrontRedirectResponse())
            ->setURI($request->getRequestURI()->alter('saved', true));
        } catch (AphrontQueryDuplicateKeyException $ex) {
          $e_username = pht('Not Unique');
          $errors[] = pht('Another user already has that username.');
        }
      }
    }

    if ($errors) {
      $errors = id(new AphrontErrorView())
        ->setTitle(pht('Form Errors'))
        ->setErrors($errors);
    } else {
      $errors = null;
    }

    $inst1 = pht('Be careful when renaming users!');
    $inst2 = pht('The old username will no longer be tied to the user, so '.
          'anything which uses it (like old commit messages) will no longer '.
          'associate correctly. And if you give a user a username which some '.
          'other user used to have, username lookups will begin returning '.
          'the wrong user.');
    $inst3 = pht('It is generally safe to rename newly created users (and '.
          'test users and so on), but less safe to rename established users '.
          'and unsafe to reissue a username.');
    $inst4 = pht('Users who rely on password auth will need to reset their '.
          'passwordafter their username is changed (their username is part '.
          'of the salt in the password hash). They will receive an email '.
          'with instructions on how to do this.');

    $form = new AphrontFormView();
    $form
      ->setUser($admin)
      ->setAction($request->getRequestURI())
      ->appendChild(hsprintf(
        '<p class="aphront-form-instructions">'.
          '<strong>%s</strong> '.
          '%s'.
        '</p>'.
        '<p class="aphront-form-instructions">'.
          '%s'.
        '</p>'.
        '<p class="aphront-form-instructions">'.
          '%s'.
        '</p>', $inst1, $inst2, $inst3, $inst4))
      ->appendChild(
        id(new AphrontFormStaticControl())
          ->setLabel(pht('Old Username'))
          ->setValue($user->getUsername()))
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('New Username'))
          ->setValue($username)
          ->setName('username')
          ->setError($e_username))
      ->appendChild(
        id(new AphrontFormSubmitControl())
          ->setValue(pht('Change Username')));

    $form_box = id(new PHUIObjectBoxView())
      ->setHeaderText(pht('Change Username'))
      ->setFormError($errors)
      ->setForm($form);

    return array($form_box);
  }

  private function processDeleteRequest(PhabricatorUser $user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $far1 = pht('As you stare into the gaping maw of the abyss, something '.
        'hold you back.');
    $far2 = pht('You can not delete your own account.');

    if ($user->getPHID() == $admin->getPHID()) {
      $error = new AphrontErrorView();
      $error->setTitle(pht('You Shall Journey No Farther'));
      $error->appendChild(hsprintf(
        '<p>%s</p><p>%s</p>', $far1, $far2));
      return $error;
    }

    $e_username = true;
    $username = null;

    $errors = array();
    if ($request->isFormPost()) {

      $username = $request->getStr('username');
      if (!strlen($username)) {
        $e_username = pht('Required');
        $errors[] = pht('You must type the username to confirm deletion.');
      } else if ($username != $user->getUsername()) {
        $e_username = pht('Invalid');
        $errors[] = pht('You must type the username correctly.');
      }

      if (!$errors) {
        id(new PhabricatorUserEditor())
          ->setActor($admin)
          ->deleteUser($user);

        return id(new AphrontRedirectResponse())->setURI('/people/');
      }
    }

    if ($errors) {
      $errors = id(new AphrontErrorView())
        ->setTitle(pht('Form Errors'))
        ->setErrors($errors);
    } else {
      $errors = null;
    }

    $str1 = pht('Be careful when deleting users!');
    $str2 = pht('If this user interacted with anything, it is generally '.
        'better to disable them, not delete them. If you delete them, it will '.
        'no longer be possible to search for their objects, for example, '.
        'and you will lose other information about their history. Disabling '.
        'them instead will prevent them from logging in but not destroy '.
        'any of their data.');
    $str3 = pht('It is generally safe to delete newly created users (and '.
          'test users and so on), but less safe to delete established users. '.
          'If possible, disable them instead.');

    $form = new AphrontFormView();
    $form
      ->setUser($admin)
      ->setAction($request->getRequestURI())
      ->appendChild(hsprintf(
        '<p class="aphront-form-instructions">'.
          '<strong>%s</strong> %s'.
        '</p>'.
        '<p class="aphront-form-instructions">'.
          '%s'.
        '</p>', $str1, $str2, $str3))
      ->appendChild(
        id(new AphrontFormStaticControl())
          ->setLabel(pht('Username'))
          ->setValue($user->getUsername()))
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('Confirm'))
          ->setValue($username)
          ->setName('username')
          ->setCaption(pht("Type the username again to confirm deletion."))
          ->setError($e_username))
      ->appendChild(
        id(new AphrontFormSubmitControl())
          ->setValue(pht('Delete User')));

    $form_box = id(new PHUIObjectBoxView())
      ->setHeaderText(pht('Delete User'))
      ->setFormError($errors)
      ->setForm($form);

    return array($form_box);
  }

  private function getRoleInstructions() {
    $roles_link = phutil_tag(
      'a',
      array(
        'href'   => PhabricatorEnv::getDoclink(
          'article/User_Guide_Account_Roles.html'),
        'target' => '_blank',
      ),
      pht('User Guide: Account Roles'));

    return phutil_tag(
      'p',
      array('class' => 'aphront-form-instructions'),
      pht('For a detailed explanation of account roles, see %s.', $roles_link));
  }

  private function processSetAccountPicture(PhabricatorUser $user) {
    $request = $this->getRequest();
    $admin = $request->getUser();

    $profile = $user->loadUserProfile();
    if (!$profile->getID()) {
      $profile->setTitle('');
      $profile->setBlurb('');
    }


    $supported_formats = PhabricatorFile::getTransformableImageFormats();

    $e_image = null;
    $errors = array();

    if ($request->isFormPost()) {
      $default_image = $request->getExists('default_image');

      if ($default_image) {
        $profile->setProfileImagePHID(null);
        $user->setProfileImagePHID(null);
      } else if ($request->getFileExists('image')) {
        $file = null;
        $file = PhabricatorFile::newFromPHPUpload(
          $_FILES['image'],
          array(
            'authorPHID' => $admin->getPHID(),
          ));

        $okay = $file->isTransformableImage();

        if ($okay) {
          $xformer = new PhabricatorImageTransformer();

          // Generate the large picture for the profile page.
          $large_xformed = $xformer->executeProfileTransform(
            $file,
            $width = 280,
            $min_height = 140,
            $max_height = 420);
          $profile->setProfileImagePHID($large_xformed->getPHID());

          // Generate the small picture for comments, etc.
          $small_xformed = $xformer->executeProfileTransform(
            $file,
            $width = 50,
            $min_height = 50,
            $max_height = 50);
          $user->setProfileImagePHID($small_xformed->getPHID());
        } else {
          $e_image = pht('Not Supported');
          $errors[] =
            pht('This server only supports these image formats:').
              ' ' .implode(', ', $supported_formats);
        }
      }

     if (!$errors) {
       $user->save();
       $profile->save();
        $response = id(new AphrontRedirectResponse())
          ->setURI('/people/edit/'.$user->getID().'/picture/');
        return $response;
      }
    }


    $error_view = null;
    if ($errors) {
      $error_view = new AphrontErrorView();
      $error_view->setTitle(pht('Form Errors'));
      $error_view->setErrors($errors);
    } else {
      if ($request->getStr('saved')) {
        $error_view = new AphrontErrorView();
        $error_view->setSeverity(AphrontErrorView::SEVERITY_NOTICE);
        $error_view->setTitle(pht('Changes Saved'));
        $error_view->appendChild(
          phutil_tag('p', array(), pht('Your changes have been saved.')));
        $error_view = $error_view->render();
      }
    }

    $img_src = $user->loadProfileImageURI();

    $form = new AphrontFormView();
    $form
      ->setUser($admin)
      ->setAction($request->getRequestURI())
      ->setEncType('multipart/form-data')
      ->appendChild(
        id(new AphrontFormMarkupControl())
          ->setLabel(pht('Profile Image'))
          ->setValue(
            phutil_tag(
              'img',
              array(
                'src' => $img_src,
              ))))
      ->appendChild(
        id(new AphrontFormImageControl())
          ->setLabel(pht('Change Image'))
          ->setName('image')
          ->setError($e_image)
          ->setCaption(
            pht('Supported formats: %s', implode(', ', $supported_formats))));

      $form->appendChild(
      id(new AphrontFormSubmitControl())
        ->setValue(pht('Save'))
        ->addCancelButton('/people/edit/'.$user->getID().'/'));

    $panel = new AphrontPanelView();
    $panel->setHeader(pht('Set Profile Picture'));
    $panel->setWidth(AphrontPanelView::WIDTH_FORM);
    $panel->setNoBackground();
    $panel->appendChild($form);

    return array($error_view, $panel);

  }

}