feature #12: Add constitution Entity, repository and route

src/main/kotlin/fr/dcproject/Application.kt

@@ -7,7 +7,10 @@ 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.entity.Constitution
 import fr.dcproject.routes.article
+import fr.dcproject.routes.constitution
+import fr.postgresjson.migration.Migrations
 import io.ktor.application.Application
 import io.ktor.application.install
 import io.ktor.auth.Authentication
@@ -23,6 +26,7 @@ import org.koin.ktor.ext.Koin
 import org.koin.ktor.ext.get
 import java.util.*
 import fr.dcproject.repository.Article as RepositoryArticle
+import fr.dcproject.repository.Constitution as RepositoryConstitution
 
 fun main(args: Array<String>): Unit = io.ktor.server.netty.EngineMain.main(args)
 
@@ -36,6 +40,7 @@ fun Application.module() {
     }
 
     install(DataConversion) {
+        // TODO move to postgresJson lib
         convert<UUID> {
             decode { values, _ ->
                 values.singleOrNull()?.let { UUID.fromString(it) }
@@ -49,6 +54,8 @@ fun Application.module() {
                 }
             }
         }
+
+        // create generic convert for entityI
         convert<Article> {
             decode { values, _ ->
                 val id = values.singleOrNull()?.let { UUID.fromString(it) }
@@ -56,6 +63,13 @@ fun Application.module() {
                 get<RepositoryArticle>().findById(id) ?: throw InternalError("Article $values not found")
             }
         }
+        convert<Constitution> {
+            decode { values, _ ->
+                val id = values.singleOrNull()?.let { UUID.fromString(it) }
+                    ?: throw InternalError("Cannot convert $values to UUID")
+                get<RepositoryConstitution>().findById(id) ?: throw InternalError("Constitution $values not found")
+            }
+        }
     }
 
     install(Locations) {
@@ -84,5 +98,9 @@ fun Application.module() {
 
     install(Routing) {
         article(get())
+        constitution(get())
     }
+
+    // TODO move to postgresJson lib
+    get<Migrations>().run()
 }

src/main/kotlin/fr/dcproject/Module.kt

@@ -6,6 +6,7 @@ import fr.postgresjson.migration.Migrations
 import io.ktor.util.KtorExperimentalAPI
 import org.koin.dsl.module
 import fr.dcproject.repository.Article as ArticleRepository
+import fr.dcproject.repository.Constitution as ConstitutionRepository
 
 val config = Config()
 
@@ -21,6 +22,9 @@ val Module = module {
         functionsDirectory = config.sqlFiles.resolve("functions")
     ).createRequester() }
 
+    // create generic declaration
     single { ArticleRepository(get()) }
+    single { ConstitutionRepository(get()) }
+
     single { Migrations(connection = get(), directory = config.sqlFiles) }
 }

src/main/kotlin/fr/dcproject/entity/Article.kt

@@ -5,15 +5,14 @@ import java.util.*
 
 class Article(
     id: UUID = UUID.randomUUID(),
-    var versionId: UUID = UUID.randomUUID(),
-    var versionNumber: Int? = null,
     var title: String?,
     var annonymous: Boolean? = true,
     var content: String?,
     var description: String?,
     var tags: List<String> = emptyList(),
-    override var createdBy: Citizen?
+    createdBy: Citizen?
 ):
     UuidEntity(id),
+    EntityVersioning<UUID, Int> by UuidEntityVersioning(),
     EntityCreatedAt by EntityCreatedAtImp(),
-    CreatedBy<Citizen> by EntityCreatedByImp()
+    CreatedBy<Citizen> by EntityCreatedByImp(createdBy)

src/main/kotlin/fr/dcproject/entity/Constitution.kt

@@ -0,0 +1,32 @@
+package fr.dcproject.entity
+
+import fr.postgresjson.entity.*
+import java.util.*
+
+class Constitution(
+    id: UUID = UUID.randomUUID(),
+    var title: String?,
+    var annonymous: Boolean?,
+    var titles: List<Title>,
+    createdBy: Citizen?
+):  UuidEntity(id),
+    EntityVersioning<UUID, Int> by UuidEntityVersioning(),
+    EntityCreatedAt by EntityCreatedAtImp(),
+    CreatedBy<Citizen> by EntityCreatedByImp(createdBy) {
+
+    init{
+        titles.forEachIndexed { index, title ->
+            title.createdBy = this.createdBy
+            title.rank = index
+        }
+    }
+
+    class Title(
+        id: UUID = UUID.randomUUID(),
+        var name: String?,
+        var rank: Int? = null,
+        createdBy: Citizen? = null
+    ):  UuidEntity(id),
+        EntityCreatedAt by EntityCreatedAtImp(),
+        CreatedBy<Citizen> by EntityCreatedByImp(createdBy)
+}

src/main/kotlin/fr/dcproject/repository/Article.kt

@@ -2,8 +2,8 @@ package fr.dcproject.repository
 
 import fr.postgresjson.connexion.Paginated
 import fr.postgresjson.connexion.Requester
-import fr.postgresjson.entity.EntitiesCollections
 import fr.postgresjson.repository.RepositoryI
+import fr.postgresjson.repository.RepositoryI.Direction
 import net.pearx.kasechange.toSnakeCase
 import java.util.*
 import fr.dcproject.entity.Article as ArticleEntity
@@ -13,12 +13,7 @@ class Article(override var requester: Requester) : RepositoryI<ArticleEntity> {
 
     fun findById(id: UUID): ArticleEntity? {
         val function = requester.getFunction("find_article_by_id")
-        return when (val e = EntitiesCollections().get(id) as ArticleEntity?) {
-            null -> {
-                function.selectOne("id" to id)
-            }
-            else -> e
-        }
+        return function.selectOne("id" to id)
     }
 
     fun find(
@@ -41,13 +36,6 @@ class Article(override var requester: Requester) : RepositoryI<ArticleEntity> {
     fun upsert(article: ArticleEntity): ArticleEntity? {
         return requester
             .getFunction("upsert_article")
-            .selectOne<ArticleEntity>("resource" to article)?.also {
-                EntitiesCollections().set(it)
-            }
-    }
-
-    enum class Direction {
-        asc,
-        desc
+            .selectOne("resource" to article)
     }
 }

src/main/kotlin/fr/dcproject/repository/Constitution.kt

@@ -0,0 +1,41 @@
+package fr.dcproject.repository
+
+import fr.postgresjson.connexion.Paginated
+import fr.postgresjson.connexion.Requester
+import fr.postgresjson.repository.RepositoryI
+import fr.postgresjson.repository.RepositoryI.Direction
+import net.pearx.kasechange.toSnakeCase
+import java.util.*
+import fr.dcproject.entity.Constitution as ConstitutionEntity
+
+class Constitution(override var requester: Requester) : RepositoryI<ConstitutionEntity> {
+    override val entityName = ConstitutionEntity::class
+
+    fun findById(id: UUID): ConstitutionEntity? {
+        val function = requester.getFunction("find_constitution_by_id")
+        return function.selectOne("id" to id)
+    }
+
+    fun find(
+        page: Int = 1,
+        limit: Int = 50,
+        sort: String? = null,
+        direction: Direction? = null,
+        search: String? = null
+    ): Paginated<ConstitutionEntity> {
+        return requester
+            .getFunction("find_constitutions")
+            .select(
+                page, limit,
+                "sort" to sort?.toSnakeCase(),
+                "direction" to direction,
+                "search" to search
+            )
+    }
+
+    fun upsert(article: ConstitutionEntity): ConstitutionEntity? {
+        return requester
+            .getFunction("upsert_constitution")
+            .selectOne("resource" to article)
+    }
+}

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

@@ -0,0 +1,30 @@
+package fr.dcproject.routes
+
+import Paths
+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.routing.Route
+import fr.dcproject.entity.Constitution as ConstitutionEntity
+import fr.dcproject.repository.Constitution as ConstitutionRepository
+
+@KtorExperimentalLocationsAPI
+fun Route.constitution(repo: ConstitutionRepository) {
+    get<Paths.ConstitutionsRequest> {
+        val constitutions = repo.find(it.page, it.limit, it.sort, it.direction, it.search)
+        call.respond(constitutions)
+    }
+
+    get<Paths.ConstitutionRequest> {
+        call.respond(it.constitution)
+    }
+
+    post<Paths.PostConstitutionRequest>() {
+        val constitution = call.receive<ConstitutionEntity>()
+        repo.upsert(constitution)
+        call.respond(constitution)
+    }
+}

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

@@ -1,5 +1,6 @@
 import fr.dcproject.entity.Article
-import fr.dcproject.repository.Article.Direction
+import fr.dcproject.entity.Constitution
+import fr.postgresjson.repository.RepositoryI.Direction
 import io.ktor.locations.KtorExperimentalLocationsAPI
 import io.ktor.locations.Location
 
@@ -11,4 +12,12 @@ object Paths {
     }
     @Location("/articles/{article}") class ArticleRequest(val article: Article)
     @Location("/articles") class PostArticleRequest
+
+
+    @Location("/constitutions") class ConstitutionsRequest(page: Int = 1, limit: Int = 50, val sort: String? = null, val direction: Direction? = null, val search: String? = null) {
+        val page: Int = if (page < 1) 1 else page
+        val limit: Int = if (limit > 50) 50 else if (limit < 1) 1 else limit
+    }
+    @Location("/constitutions/{constitution}") class ConstitutionRequest(val constitution: Constitution)
+    @Location("/constitutions") class PostConstitutionRequest
 }

src/main/resources/sql/functions/article/upsert_article.sql

@@ -17,6 +17,9 @@ begin
     returning id into new_id;
 
     if resource->>'relations' is not null then
+        delete from article_relations
+        where source_id = (resource->>'id')::uuid;
+
         insert into article_relations (source_id, target_id, created_by_id)
         select
             (resource->>'id')::uuid,

src/main/resources/sql/functions/constitution/find_constitutions.sql

@@ -0,0 +1,42 @@
+create or replace function find_constitutions(
+    search text default null,
+    direction text default 'desc',
+    sort text default 'created_at',
+    "limit" int default 50,
+    "offset" int default 0,
+    out resource json,
+    out total int
+) language plpgsql as
+$$
+begin
+    select json_agg(t), (select count(id) from constitution)
+    into resource, total
+    from (
+        select
+            c.*,
+            find_citizen_by_id(c.created_by_id) as created_by,
+            find_constitution_titles_by_id(c.id) as titles
+        from constitution as c
+        where "search" is null or title ilike '%'||"search"||'%'
+        order by
+        case direction when 'asc' then
+            case sort
+                when 'title' then c.title
+                when 'created_at' then c.created_at::text
+                else null
+            end
+        end,
+        case direction when 'desc' then
+            case sort
+                when 'title' then c.title
+                when 'created_at' then c.created_at::text
+            end
+        end
+        desc,
+        c.created_at desc
+        limit "limit" offset "offset"
+    ) as t;
+end;
+$$;
+
+-- drop function if exists find_constitutions(json, int, int);