<?php

/*
 * Copyright 2011 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Provides command-line access to the Conduit API.
 *
 * @group workflow
 */
class ArcanistCallConduitWorkflow extends ArcanistBaseWorkflow {

  public function getCommandHelp() {
    return phutil_console_format(<<<EOTEXT
      **call-conduit** __method__
          Supports: http, https
          Allows you to make a raw Conduit method call. Call parameters are read
          as a JSON blob from stdin. Results are written to stdout as a JSON
          blob. This workflow is primarily useful for writing scripts which
          integrate with Phabricator.
EOTEXT
      );
  }

  public function getArguments() {
    return array(
      '*' => 'method',
    );
  }

  public function shouldShellComplete() {
    return false;
  }

  public function requiresConduit() {
    return true;
  }

  public function run() {
    $method = $this->getArgument('method', array());
    if (count($method) !== 1) {
      throw new ArcanistUsageException(
        "Provide exactly one Conduit method name.");
    }
    $method = reset($method);

    $params = @file_get_contents('php://stdin');
    $params = json_decode($params, true);
    if (!is_array($params)) {
      throw new ArcanistUsageException(
        "Provide method parameters on stdin as a JSON blob.");
    }

    $error = null;
    $error_message = null;
    try {
      $result = $this->getConduit()->callMethodSynchronous(
        $method,
        $params);
    } catch (ConduitClientException $ex) {
      $error = $ex->getErrorCode();
      $error_message = $ex->getMessage();
      $result = null;
    }

    echo json_encode(array(
      'error'         => $error,
      'errorMessage'  => $error_message,
      'response'      => $result,
    ))."\n";

    return 0;
  }
}