feature #14: Add routes for follow/unfollow coonstitution

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

@@ -0,0 +1,37 @@
+package fr.dcproject.routes
+
+import Paths
+import fr.dcproject.entity.Citizen
+import fr.dcproject.entity.User
+import fr.dcproject.repository.FollowConstitutionRepository
+import io.ktor.application.call
+import io.ktor.http.HttpStatusCode
+import io.ktor.locations.KtorExperimentalLocationsAPI
+import io.ktor.locations.delete
+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 currentCitizen2 = 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.followConstitution(repo: FollowConstitutionRepository) {
+    post<Paths.ConstitutionFollowRequest> {
+        repo.follow(FollowEntity(target = it.constitution, citizen = currentCitizen2))
+        call.respond(HttpStatusCode.Created)
+    }
+
+    delete<Paths.ConstitutionFollowRequest> {
+        repo.unfollow(FollowEntity(target = it.constitution, citizen = currentCitizen2))
+        call.respond(HttpStatusCode.NoContent)
+    }
+}

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

@@ -22,6 +22,7 @@ object Paths {
         val limit: Int = if (limit > 50) 50 else if (limit < 1) 1 else limit
     }
     @Location("/constitutions/{constitution}") class ConstitutionRequest(val constitution: Constitution)
+    @Location("/constitutions/{constitution}/follow") class ConstitutionFollowRequest(val constitution: Constitution)
     @Location("/constitutions") class PostConstitutionRequest