com.yukihirai0505.sFacebook.Facebook.scala Maven / Gradle / Ivy

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A Scala library for the Facebook API
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package com.yukihirai0505.sFacebook

import java.io.File
import java.nio.charset.Charset

import play.api.libs.json.Reads
import com.ning.http.client.multipart.{FilePart, StringPart}
import com.yukihirai0505.sFacebook.http.{Request, Verbs}
import com.yukihirai0505.sFacebook.model.Constants.ME
import com.yukihirai0505.sFacebook.model.{Constants, Methods, OAuthConstants}
import com.yukihirai0505.sFacebook.responses.comments.Comments
import com.yukihirai0505.sFacebook.responses.common.Success
import com.yukihirai0505.sFacebook.responses.photos.PublishPhotos
import com.yukihirai0505.sFacebook.responses.post.{PostData, PublishPost}
import com.yukihirai0505.sFacebook.responses.user.UserData
import dispatch._

import scala.language.postfixOps


/**
  * author Yuki Hirai on 2016/11/09.
  */
class Facebook(accessToken: String) {

  /**
    * Make facebook api request
    *
    * @param verb
    * @param apiPath
    * @param params
    * @param imageFile
    * @param r
    * @tparam T
    * @return
    */
  def request[T](verb: Verbs, apiPath: String, params: Option[Map[String, Option[String]]] = None, imageFile: Option[File] = None)(implicit r: Reads[T]): Future[Option[T]] = {
    val parameters: Map[String, String] = params match {
      case Some(m) => m.filter(_._2.isDefined).mapValues(_.getOrElse("")).filter(!_._2.isEmpty)
      case None => Map.empty
    }
    val effectiveUrl = s"${Constants.API_URL}$apiPath?${OAuthConstants.ACCESS_TOKEN}=$accessToken"
    val request: Req = url(effectiveUrl).setMethod(verb.label)
    val requestWithParams =
      if (verb == Verbs.GET) request < message
      )
    )
    request[PublishPost](Verbs.POST, apiPath, params)
  }

  /**
    * Delete post
    *
    * @param postId
    * @return
    */
  def deletePost(postId: String): Future[Option[Success]] = {
    val apiPath: String = s"/$postId"
    request[Success](Verbs.DELETE, apiPath)
  }

  /**
    * Create new post with image file
    *
    * @param userId
    * @param caption
    * @param imageFile
    * @return
    */
  def publishPhotos(userId: String = ME, caption: String = "", imageFile: File): Future[Option[PublishPhotos]] = {
    val apiPath: String = Methods.PHOTOS format userId
    val params = Option(
      Map(
        "caption" -> Some(caption)
      )
    )
    request[PublishPhotos](Verbs.POST, apiPath, params, Some(imageFile))
  }

  /**
    * Get facebook comment info
    *
    * @param objectId
    * @return
    */
  def getComments(objectId: String): Future[Option[Comments]] = {
    val apiPath: String = Methods.COMMENTS format objectId
    request[Comments](Verbs.GET, apiPath)
  }
}