Allow .extension in url

src/main/kotlin/moe/kageru/kodeshare/Routes.kt

@@ -47,37 +47,41 @@ object Routes {
         get("/about") {
             call.respond(HttpStatusCode.OK, AboutPage.content)
         }
-        get<PasteRequest> { req ->
+        get<HtmlPasteRequest> { req ->
             call.handleGet(req)
         }
         get<RawPasteRequest> { req ->
             call.handleRaw(req)
         }
-        get<TypedPasteRequest> { req ->
-            call.handleGet(req)
-        }
         head("/") {
             call.respond(HttpStatusCode.OK)
         }
         head<RawPasteRequest> { req ->
-            call.handleHead(req)
+            call.handleHead(req, true)
         }
-        head<TypedPasteRequest> { req ->
-            call.handleHead(req)
-        }
-        head<PasteRequest> { req ->
+        head<HtmlPasteRequest> { req ->
             call.handleHead(req)
         }
     }
 
-    private suspend fun ApplicationCall.handleHead(paste: AbstractPasteRequest) {
-        if (PasteDao.selectByUri(paste.uri) != null) {
-            respond(HttpStatusCode.OK)
+    private suspend fun ApplicationCall.handleHead(paste: PasteRequest, raw: Boolean = false) {
+        val uri = splitPath(paste.uri).first
+        if (PasteDao.selectByUri(uri) != null) {
+            respond(HttpStatusCode.OK, if (raw) ContentType.Text.Plain else ContentType.Text.Html)
         } else {
             respond(HttpStatusCode.NotFound)
         }
     }
 
+    private fun splitPath(uri: String): Pair<String, String?> {
+        return if (uri.contains('.')) {
+            val (name, ext) = uri.split(".", limit = 2)
+            Pair(name, ext)
+        } else {
+            Pair(uri, null)
+        }
+    }
+
     @ExperimentalStdlibApi
     private suspend fun ApplicationCall.handlePost() {
         receiveMultipart().forEachPart { part ->
@@ -121,13 +125,13 @@ object Routes {
         return uri
     }
 
-    private suspend fun ApplicationCall.handleGet(req: AbstractPasteRequest) {
-        val uri = req.uri
+    private suspend fun ApplicationCall.handleGet(req: PasteRequest) {
+        val (uri, ext) = splitPath(req.uri)
         Log.info("Retrieving paste $uri")
         PasteDao.selectByUri(uri)?.data?.let { paste ->
             respond(
                 HttpStatusCode.OK,
-                PastePage.build(paste.content, req.filetype)
+                PastePage.build(paste.content, ext)
             )
         } ?: respond(HttpStatusCode.NotFound, "nothing found for id $uri")
     }
@@ -141,20 +145,14 @@ object Routes {
     }
 }
 
-@KtorExperimentalLocationsAPI
-// tfw we can’t do {id}.{filetype} here because reasons:tm:
-@Location("/{uri}/{filetype}")
-data class TypedPasteRequest(override val uri: String, override val filetype: String) : AbstractPasteRequest()
-
 @KtorExperimentalLocationsAPI
 @Location("/r/{uri}")
-data class RawPasteRequest(override val uri: String) : AbstractPasteRequest()
+data class RawPasteRequest(override val uri: String) : PasteRequest
 
 @KtorExperimentalLocationsAPI
 @Location("/{uri}")
-data class PasteRequest(override val uri: String) : AbstractPasteRequest()
+data class HtmlPasteRequest(override val uri: String) : PasteRequest
 
-abstract class AbstractPasteRequest {
-    abstract val uri: String
-    open val filetype: String? = null
+interface PasteRequest {
+    val uri: String
 }

src/main/kotlin/moe/kageru/kodeshare/pages/AboutPage.kt

@@ -48,9 +48,8 @@ object AboutPage {
                     +"If the automatic detection fails, you can override it by appending the file extension to the url."
                     br
                     div("framed") {
-                        +"$domain/rx78/kt"
+                        +"$domain/rx78.kt"
                     }
-                    +"I wanted to use “/<id>.<ext>”, but it looks like ktor locations don’t work like that. Or I’m just bad at this."
                     br
                     br
                     +"If you choose to disable Javascript entirely, everything other than the syntax highlighting will still work as intended. "