Facebot
This is a client for Facebook Messenger Platform API.
Library Design
Connection layer has two implementions:
Connection works as a REST server to process Facebook Webhooks and a client to reply to bot with send method:
def send[R](endpoint: String,
params: Map[String, String],
bodyOpt: Option[String],
parseResponse: String => R): F[R]As a serialization library it uses Pushka.
Common Usage
In facebot/akkahttp/src/main/scala/runDebug.scala create AkkaHttpConnection object, provide it with ActorSystem, pass Credentials and EventHandler as parameters.
implicit val system = ActorSystem("facebotActorSystem")
implicit val materializer = ActorMaterializer()
implicit val executionContext = system.dispatcher
val facebotConnection = AkkaHttpConnection(Credentials(
"ACCESS_TOKEN",
"VERIFY_TOKEN")) {
case sendApi @ Event(_, Messaging.MessageReceived(sender, _, message))
if !message.isEcho =>
sendApi.sendMessage(sender, Message("MESSAGE_TEXT"), Regular)
}Then initialize HTTP server and pass facebook REST route from AkkaHttpConnection object.
val bindingFuture =
Http().bindAndHandle(facebotConnection.facebookRestRoute, "localhost", 8701)You can run it with sbt 'project akkahttp' run
import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.stream.ActorMaterializer
import co.datamonsters.facebot._
import co.datamonsters.facebot.api.{Message, Messaging}
import co.datamonsters.facebot.api.NotificationType.Regular
import scala.io.StdIn
object runDebug {
def main(args: Array[String]): Unit = {
implicit val system = ActorSystem("facebotActorSystem")
implicit val materializer = ActorMaterializer()
implicit val executionContext = system.dispatcher
val facebotConnection = AkkaHttpConnection(Credentials(
"ACCESS_TOKEN",
"VERIFY_TOKEN")) {
case sendApi @ Event(_, Messaging.MessageReceived(sender, _, message))
if !message.isEcho =>
sendApi.sendMessage(sender, Message("MESSAGE_TEXT"), Regular)
}
val bindingFuture =
Http().bindAndHandle(facebotConnection.facebookRestRoute, "localhost", 8701)
StdIn.readLine() // let it run until user presses return
bindingFuture.flatMap(_.unbind()).onComplete(_ => system.terminate())
}
}