simpliest version of content upload

features/common/common/src/jsMain/kotlin/dev/inmo/postssystem/features/common/common/FileBasedInputProvider.kt

@@ -1,14 +1,16 @@
 package dev.inmo.postssystem.features.common.common
 
 import dev.inmo.micro_utils.common.MPPFile
+import dev.inmo.micro_utils.common.bytes
 import io.ktor.utils.io.core.ByteReadPacket
 import io.ktor.utils.io.core.Input
 import kotlinx.serialization.Serializable
 
 @Serializable(SimpleInputProviderSerializer::class)
 actual class FileBasedInputProvider internal constructor(
-    actual val file: MPPFile,
-    private val bytes: ByteArray
+    actual val file: MPPFile
 ) : SimpleInputProvider {
-    override fun invoke(): Input = ByteReadPacket(bytes)
+    override fun invoke(): Input = error("Files inputs must not be used directly")
 }
+
+fun MPPFile.inputProvider() = FileBasedInputProvider(this)