<?php

final class PhabricatorAsanaConfigOptions
  extends PhabricatorApplicationConfigOptions {

  public function getName() {
    return pht('Integration with Asana');
  }

  public function getDescription() {
    return pht('Asana integration options.');
  }

  public function getIcon() {
    return 'fa-exchange';
  }

  public function getGroup() {
    return 'core';
  }

  public function getOptions() {
    return array(
      $this->newOption('asana.workspace-id', 'string', null)
        ->setSummary(pht('Asana Workspace ID to publish into.'))
        ->setDescription(
          pht(
            'To enable synchronization into Asana, enter an Asana Workspace '.
            'ID here.'.
            "\n\n".
            "NOTE: This feature is new and experimental.")),
      $this->newOption('asana.project-ids', 'wild', null)
        ->setSummary(pht('Optional Asana projects to use as application tags.'))
        ->setDescription(
          pht(
            'When Phabricator creates tasks in Asana, it can add the tasks '.
            'to Asana projects based on which application the corresponding '.
            'object in Phabricator comes from. For example, you can add code '.
            'reviews in Asana to a "Differential" project.'.
            "\n\n".
            'NOTE: This feature is new and experimental.')),
    );
  }

  public function renderContextualDescription(
    PhabricatorConfigOption $option,
    AphrontRequest $request) {

    switch ($option->getKey()) {
      case 'asana.workspace-id':
        break;
      case 'asana.project-ids':
        return $this->renderContextualProjectDescription($option, $request);
      default:
        return parent::renderContextualDescription($option, $request);
    }

    $viewer = $request->getUser();

    $provider = PhabricatorAsanaAuthProvider::getAsanaProvider();
    if (!$provider) {
      return null;
    }

    $account = id(new PhabricatorExternalAccountQuery())
      ->setViewer($viewer)
      ->withUserPHIDs(array($viewer->getPHID()))
      ->withAccountTypes(array($provider->getProviderType()))
      ->withAccountDomains(array($provider->getProviderDomain()))
      ->requireCapabilities(
        array(
          PhabricatorPolicyCapability::CAN_VIEW,
          PhabricatorPolicyCapability::CAN_EDIT,
        ))
      ->executeOne();
    if (!$account) {
      return null;
    }

    $token = $provider->getOAuthAccessToken($account);
    if (!$token) {
      return null;
    }

    try {
      $workspaces = id(new PhutilAsanaFuture())
        ->setAccessToken($token)
        ->setRawAsanaQuery('workspaces')
        ->resolve();
    } catch (Exception $ex) {
      return null;
    }

    if (!$workspaces) {
      return null;
    }

    $out = array();
    $out[] = sprintf(
      '| %s | %s |',
      pht('Workspace ID'),
      pht('Workspace Name'));
    $out[] = '| ------------ | -------------- |';
    foreach ($workspaces as $workspace) {
      $out[] = sprintf('| `%s` | `%s` |', $workspace['id'], $workspace['name']);
    }

    $out = implode("\n", $out);

    $out = pht(
      "The Asana Workspaces your linked account has access to are:\n\n%s",
      $out);

    return new PHUIRemarkupView($viewer, $out);
  }

  private function renderContextualProjectDescription(
    PhabricatorConfigOption $option,
    AphrontRequest $request) {

    $viewer = $request->getUser();

    $publishers = id(new PhutilClassMapQuery())
      ->setAncestorClass('DoorkeeperFeedStoryPublisher')
      ->execute();

    $out = array();
    $out[] = pht(
      'To specify projects to add tasks to, enter a JSON map with publisher '.
      'class names as keys and a list of project IDs as values. For example, '.
      'to put Differential tasks into Asana projects with IDs `123` and '.
      '`456`, enter:'.
      "\n\n".
      "  lang=txt\n".
      "  {\n".
      "    \"DifferentialDoorkeeperRevisionFeedStoryPublisher\" : [123, 456]\n".
      "  }\n");

    $out[] = pht('Available publishers class names are:');
    foreach ($publishers as $publisher) {
      $out[] = '  - `'.get_class($publisher).'`';
    }

    $out[] = pht(
      'You can find an Asana project ID by clicking the project in Asana and '.
      'then examining the URL:'.
      "\n\n".
      "  lang=txt\n".
      "  https://app.asana.com/0/12345678901234567890/111111111111111111\n".
      "                          ^^^^^^^^^^^^^^^^^^^^\n".
      "                        This is the ID to use.\n");

    $out = implode("\n", $out);

    return new PHUIRemarkupView($viewer, $out);
  }

}
