Delete user

api/src/extensions/ParametersExtensions.kt

@@ -6,7 +6,7 @@ import be.vandewalleh.tables.Notes
 import io.ktor.http.*
 import org.kodein.di.generic.instance
 
-val notesService by kodein.instance<NotesService>()
+private val notesService by kodein.instance<NotesService>()
 
 fun Parameters.noteTitle(): String {
     return this["noteTitle"]!!

api/src/services/UserService.kt

@@ -1,6 +1,7 @@
 package be.vandewalleh.services
 
 import be.vandewalleh.entities.User
+import be.vandewalleh.tables.Notes
 import be.vandewalleh.tables.Users
 import me.liuwj.ktorm.database.*
 import me.liuwj.ktorm.dsl.*
@@ -15,6 +16,7 @@ import java.time.LocalDateTime
  */
 class UserService(override val kodein: Kodein) : KodeinAware {
     private val db by instance<Database>()
+    private val notesService by instance<NotesService>()
 
     /**
      * returns a user ID if present or null
@@ -65,6 +67,21 @@ class UserService(override val kodein: Kodein) : KodeinAware {
         }
     }
 
+    fun deleteUser(userId: Int) {
+        db.useTransaction {
+            val notesId = db.from(Notes)
+                .select(Notes.id)
+                .where { Notes.userId eq userId }
+                .map { it[Notes.userId]!! }
+
+            notesId.forEach { noteId ->
+                notesService.deleteNote(noteId)
+            }
+        }
+
+        db.delete(Users) { it.id eq userId }
+    }
+
 }
 
 data class UserRegistrationDto(val username: String, val email: String, val password: String)