Adds file session handling.

app/src/main/kotlin/net/h34t/filemure/Server.kt

@@ -4,6 +4,11 @@ import io.javalin.Javalin
 import io.javalin.http.staticfiles.Location
 import net.h34t.filemure.FilemureApp
 import net.h34t.filemure.repository.SqliteRepository
+import org.eclipse.jetty.http.HttpCookie
+import org.eclipse.jetty.server.session.DefaultSessionCache
+import org.eclipse.jetty.server.session.FileSessionDataStore
+import org.eclipse.jetty.server.session.SessionHandler
+import java.io.File
 
 
 fun main() {
@@ -18,15 +23,33 @@ fun main() {
                 staticFiles.hostedPath = "/"
                 staticFiles.directory = "./public"
                 staticFiles.location = Location.EXTERNAL
-                // staticFiles.
             }
 
             config.requestLogger.http { ctx, ms ->
                 // log things here
             }
+
+            config.useVirtualThreads = true
+
+            config.jetty.modifyServletContextHandler {
+                it.sessionHandler = fileSessionHandler()
+            }
         }
         .also {
             app.register(it)
         }
         .start(7070)
 }
+
+fun fileSessionHandler() = SessionHandler().apply {
+    sessionCache = DefaultSessionCache(this).apply {
+        sessionDataStore = FileSessionDataStore().apply {
+            val baseDir = File(System.getProperty("java.io.tmpdir"))
+            this.storeDir = File(baseDir, "javalin-session").apply { mkdirs() }
+        }
+    }
+    maxInactiveInterval = 30 * 60
+    httpOnly = true
+    isSecureRequestOnly = true
+    sameSite = HttpCookie.SameSite.STRICT
+}

app/src/main/kotlin/net/h34t/filemure/Session.kt

@@ -1,3 +1,6 @@
 package net.h34t.filemure
 
-data class Session(val id: Long, val email: String)
+import java.io.Serializable
+
+
+data class Session(val id: Long, val email: String) : Serializable