feature #14: create route for follow article

src/main/kotlin/fr/dcproject/routes/Follow.kt

@@ -0,0 +1,31 @@
+package fr.dcproject.routes
+
+import Paths
+import fr.dcproject.entity.Citizen
+import fr.dcproject.entity.User
+import fr.dcproject.repository.FollowArticleRepository
+import io.ktor.application.call
+import io.ktor.http.HttpStatusCode
+import io.ktor.locations.KtorExperimentalLocationsAPI
+import io.ktor.locations.post
+import io.ktor.response.respond
+import io.ktor.routing.Route
+import org.joda.time.DateTime
+import java.util.*
+import fr.dcproject.entity.Follow as FollowEntity
+
+// TODO get current citizen
+val currentCitizen = Citizen(
+    id = UUID.fromString("64b7b379-2298-43ec-b428-ba134930cabd"),
+    name = Citizen.Name("todo", "todo"),
+    birthday = DateTime.now(),
+    user = User(username = "plop", plainPassword = "plip")
+)
+
+@KtorExperimentalLocationsAPI
+fun Route.followArticle(repo: FollowArticleRepository) {
+    post<Paths.ArticleFollowRequest> {
+        repo.follow(FollowEntity(target = it.article, citizen = currentCitizen))
+        call.respond(HttpStatusCode.Created)
+    }
+}

src/main/kotlin/fr/dcproject/routes/Paths.kt

@@ -1,5 +1,6 @@
 import fr.dcproject.entity.Article
 import fr.dcproject.entity.Constitution
+import fr.dcproject.entity.Follow
 import fr.postgresjson.repository.RepositoryI.Direction
 import io.ktor.locations.KtorExperimentalLocationsAPI
 import io.ktor.locations.Location
@@ -11,6 +12,7 @@ object Paths {
         val limit: Int = if (limit > 50) 50 else if (limit < 1) 1 else limit
     }
     @Location("/articles/{article}") class ArticleRequest(val article: Article)
+    @Location("/articles/{article}/follow") class ArticleFollowRequest(val article: Article)
     @Location("/articles") class PostArticleRequest