feature #6: implement PostArticle route

fix upsert_article function

build.gradle.kts

@@ -1,6 +1,3 @@
-import org.jetbrains.kotlin.gradle.dsl.Coroutines
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 val ktor_version: String by project
 val kotlin_version: String by project
 val logback_version: String by project
@@ -35,6 +32,9 @@ dependencies {
     compile("io.ktor:ktor-auth-jwt:$ktor_version")
     compile("io.ktor:ktor-gson:$ktor_version")
     compile("org.koin:koin-ktor:$koinVersion")
+    compile("io.ktor:ktor-jackson:$ktor_version")
+    compile("com.fasterxml.jackson.module:jackson-module-kotlin:2.9.9")
+    compile("com.fasterxml.jackson.datatype:jackson-datatype-joda:2.9.9")
     compile("fr.postgresjson:postgresjson:$postgresjson_version")
     testCompile("io.ktor:ktor-server-tests:$ktor_version")
 }

resources/sql/functions/article/upsert_article.sql

@@ -1,4 +1,4 @@
-create or replace procedure upsert_article(inout resource json)
+create or replace function upsert_article(inout resource json)
     language plpgsql as
 $$
 declare
@@ -6,7 +6,7 @@ declare
 begin
     insert into article (version_id, created_by_id, title, annonymous, content, description, tags)
     select
-       version_id,
+       coalesce(version_id, uuid_generate_v4()),
        (resource#>>'{created_by, id}')::uuid,
        title,
        annonymous,

src/fr/dcproject/Application.kt

@@ -1,13 +1,20 @@
 package fr.dcproject
 
+import com.fasterxml.jackson.core.util.DefaultIndenter
+import com.fasterxml.jackson.core.util.DefaultPrettyPrinter
+import com.fasterxml.jackson.databind.DeserializationFeature
+import com.fasterxml.jackson.databind.PropertyNamingStrategy
+import com.fasterxml.jackson.databind.SerializationFeature
+import com.fasterxml.jackson.datatype.joda.JodaModule
 import fr.dcproject.entity.Article
 import fr.dcproject.routes.article
 import io.ktor.application.Application
 import io.ktor.application.install
 import io.ktor.auth.Authentication
+import io.ktor.features.AutoHeadResponse
 import io.ktor.features.ContentNegotiation
 import io.ktor.features.DataConversion
-import io.ktor.gson.gson
+import io.ktor.jackson.jackson
 import io.ktor.locations.KtorExperimentalLocationsAPI
 import io.ktor.locations.Locations
 import io.ktor.routing.Routing
@@ -57,12 +64,25 @@ fun Application.module() {
     install(Authentication) {
     }
 
+    install(AutoHeadResponse)
+
     install(ContentNegotiation) {
-        gson {
+        // TODO move to postgresJson lib
+        jackson {
+            propertyNamingStrategy = PropertyNamingStrategy.SNAKE_CASE
+
+            registerModule(JodaModule())
+            disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
+            configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+            configure(SerializationFeature.INDENT_OUTPUT, true)
+            setDefaultPrettyPrinter(DefaultPrettyPrinter().apply {
+                indentArraysWith(DefaultPrettyPrinter.FixedSpaceIndenter.instance)
+                indentObjectsWith(DefaultIndenter("  ", "\n"))
+            })
         }
     }
 
     install(Routing) {
-        article()
+        article(get())
     }
 }

src/fr/dcproject/entity/Article.kt

@@ -4,13 +4,13 @@ import java.util.*
 
 
 class Article(
-    id: UUID,
+    id: UUID?,
-    var versionId: UUID,
+    var versionId: UUID?,
-    var versionNumber: Int,
+    var versionNumber: Int?,
-    var title: String,
+    var title: String?,
-    var annonymous: Boolean,
+    var annonymous: Boolean?,
-    var content: String,
+    var content: String?,
-    var description: String,
+    var description: String?,
     var tags: List<String>
 ):
     UuidEntity(id),

src/fr/dcproject/entity/User.kt

@@ -7,7 +7,7 @@ import java.util.*
 
 class User(
     id: UUID?,
-    var username: String,
+    var username: String?,
     var blockedAt: DateTime?,
     override var createdAt: DateTime?,
     override var updatedAt: DateTime?

src/fr/dcproject/repository/Article.kt

@@ -4,11 +4,10 @@ import fr.postgresjson.connexion.Requester
 import fr.postgresjson.entity.EntitiesCollections
 import fr.postgresjson.repository.RepositoryI
 import java.util.*
-import kotlin.reflect.KClass
 import fr.dcproject.entity.Article as ArticleEntity
 
 class Article(override var requester: Requester) : RepositoryI<ArticleEntity> {
-    override val entityName: KClass<fr.dcproject.entity.Article> = ArticleEntity::class
+    override val entityName = ArticleEntity::class
 
     fun findById(id: UUID): ArticleEntity? {
         val function = requester.getFunction("find_article_by_id")
@@ -19,4 +18,12 @@ class Article(override var requester: Requester) : RepositoryI<ArticleEntity> {
             else -> e
         }
     }
+
+    fun upsert(article: ArticleEntity): ArticleEntity? {
+        return requester
+            .getFunction("upsert_article")
+            .selectOne<ArticleEntity>("resource" to article)?.also {
+                EntitiesCollections().set(it)
+            }
+    }
 }

src/fr/dcproject/routes/Article.kt

@@ -5,15 +5,25 @@ import fr.postgresjson.serializer.serialize
 import io.ktor.application.call
 import io.ktor.locations.KtorExperimentalLocationsAPI
 import io.ktor.locations.get
+import io.ktor.locations.post
+import io.ktor.request.receive
+import io.ktor.response.respond
 import io.ktor.response.respondText
 import io.ktor.routing.Route
+import fr.dcproject.entity.Article as ArticleEntity
+import fr.dcproject.repository.Article as ArticleRepository
 
 @KtorExperimentalLocationsAPI
-fun Route.article() {
+fun Route.article(repo: ArticleRepository) {
     get<Paths.ArticlesRequest> {
         call.respondText("todo")
     }
     get<Paths.ArticleRequest> {
         call.respondText(it.article.serialize())
     }
+    post<Paths.PostArticleRequest>() {
+        val article = call.receive<ArticleEntity>()
+        repo.upsert(article)
+        call.respond(article)
+    }
 }