bip-pod-facebook/get_post_photo.js

Facebook Pod for Bipio

/**
 *
 * The Bipio Facebook Pod
 *
 * Copyright (c) 2017 InterDigital, Inc. All Rights Reserved
 *
 * 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.
 */
var url = require('url');

function getPostPhoto() {}

getPostPhoto.prototype = {};

getPostPhoto.prototype.setup = function(channel, accountInfo, next) {
	this.pod.trackingStart(channel, accountInfo, true, next);
}

getPostPhoto.prototype.teardown = function(channel, accountInfo, next) {
	this.pod.trackingRemove(channel, accountInfo, next);
}

getPostPhoto.prototype.trigger = function(imports, channel, sysImports, contentParts, next) {
	  var pod = this.pod,
	  	$resource = this.$resource,
	    self = this,
	    dataDir = pod.getDataDir(channel, this.name);


	  pod.trackingGet(channel, function(err, since) {
	    if (err) {
	      next(err);
	    } else {
	      pod.trackingUpdate(channel, function(err, until) {
	        if (err) {
	          next(err);
	        } else {
	          imports.since = since;
	          imports.until = until;

	          self.invoke(imports, channel, sysImports, contentParts, function(err, photo) {
	            if (err) {
	              next(err);
	            } else {

								var fileName = photo.source.match(/\w*\.jpg/).shift(),
									outFile = dataDir + '/' + fileName;

								$resource._httpStreamToFile(
									photo.source,
									outFile,
									function(err, fileStruct) {
										if (err) {
											next(err);
										} else {
				              next(false, photo, { _files : [ fileStruct ] }, fileStruct.size);
										}
									}
								);
	            }
	          });
	        }
	      });
	    }
	  });
	}
/**
 * Invokes (runs) the action.
 *
 */
getPostPhoto.prototype.invoke = function(imports, channel, sysImports, contentParts, next) {
	  var $resource = this.$resource,
      self = this,
      client = this.pod.getClient(sysImports);

    // get last tracking time
    var args = self.pod.initParams(sysImports);

    if (imports.since) {
       args.since = imports.since;
    }

    if (imports.until) {
    	args.until = imports.until;
    }

    client.api('/v2.3/' + JSON.parse(sysImports.auth.oauth.profile).id + '/photos', 'get', args,
        function (res) {
            var err = false;
            var forwardOk = false;
            if (res.error) {
                next(res.error, exports);
                // expired token
                if (res.error.code == 190 && res.error.error_subcode == 466) {
                    next(res.error.message);
                }
            } else {
                if (res.data.length > 0) {
	                for (var i = 0; i < res.data.length; i++) {
                    next(false, res.data[i] );
	                }
                }
            }
        });
}

// -----------------------------------------------------------------------------
module.exports = getPostPhoto;