refactor: cleaner str-to-int with 400 response on err

src/main/kotlin/su/coolpeople/model/ProfileRepository.kt

@@ -12,11 +12,11 @@ object ProfileRepository {
         ),
     )
 
-    fun getById(id: UInt): Profile? {
+    fun get(id: UInt): Profile? {
         return profiles.get(id)
     }
 
-    fun deleteById(id: UInt): Boolean {
+    fun delete(id: UInt): Boolean {
         return profiles.remove(id) != null
     }
 }

src/main/kotlin/su/coolpeople/plugins/Routing.kt

@@ -3,6 +3,7 @@ package su.coolpeople.plugins
 import io.ktor.server.application.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
+import io.ktor.server.plugins.BadRequestException
 import io.ktor.http.HttpStatusCode
 import su.coolpeople.model.ProfileRepository
 import kotlin.text.toUInt
@@ -15,14 +16,9 @@ fun Application.configureRouting() {
             }
 
             get("/{id}") {
-                val id = try {
+                val id = call.parameters["id"]?.toUIntOrNull() ?: throw BadRequestException("Invalid ID")
-                    call.parameters["id"]!!.toUInt()
-                } catch (ex: kotlin.NumberFormatException) {
-                    call.respond(HttpStatusCode.BadRequest)
-                    return@get
-                }
 
-                val profile = ProfileRepository.getById(id)
+                val profile = ProfileRepository.get(id)
                 if (profile == null) {
                     call.respond(HttpStatusCode.NotFound)
                     return@get
@@ -32,14 +28,9 @@ fun Application.configureRouting() {
             }
 
             delete("/{id}") {
-                val id = try {
+                val id = call.parameters["id"]?.toUIntOrNull() ?: throw BadRequestException("Invalid ID")
-                    call.parameters["id"]!!.toUInt()
-                } catch (ex: kotlin.NumberFormatException) {
-                    call.respond(HttpStatusCode.BadRequest)
-                    return@delete
-                }
 
-                if (!ProfileRepository.deleteById(id)) {
+                if (!ProfileRepository.delete(id)) {
                     call.respond(HttpStatusCode.NotFound)
                 } else {
                     call.respond(HttpStatusCode.OK)