Add configurable flake deployment component (#4)

src/main/scala/com/nikolaiser/biser/nix/ConfigurableFlakeDeployment.scala

@@ -0,0 +1,64 @@
+package com.nikolaiser.biser.nix
+
+import besom.*
+import besom.api.command
+import besom.internal.RegistersOutputs
+import besom.json.JsonWriter
+import scala.concurrent.Future
+import Pulumi.given_ExecutionContext
+
+case class ConfigurableFlakeDeployment(
+    flakeDir: Output[String]
+)(using ComponentBase)
+    extends ComponentResource
+    derives RegistersOutputs
+
+object ConfigurableFlakeDeployment:
+
+  def apply[A: JsonWriter](using Context)(
+      flakeRepository: String,
+      flakeOutput: String,
+      config: A,
+      targetHost: String, // including usrname@
+      name: String,
+      configLocation: String = "./config.json",
+      options: ComponentResourceOptions = ComponentResourceOptions()
+  ): Output[ConfigurableFlakeDeployment] =
+    component(
+      s"""biser-flake-deployment-$name""",
+      "biser:nix:ConfigurableFlakeDeployment",
+      options
+    ) {
+      val jsonConfig = summon[JsonWriter[A]].write(config).toString
+
+      val deployment = for {
+
+        flakeDir <- command.local
+          .Command(
+            s"biser-flake-deployment-$name-flakedir",
+            command.local.CommandArgs(
+              create =
+                s"mkdir -p '$$XDG_STATE_HOME/biser/flakes/$name' && echo '$$XDG_STATE_HOME/biser/flakes/$name'",
+              delete = s"rm -rf '$$XDG_STATE_HOME/biser/flakes/$name'"
+            )
+          )
+          .stdout
+
+        _ <- command.local
+          .Command(
+            s"biser-flake-deployment-$flakeRepository-build",
+            command.local.CommandArgs(
+              create =
+                s"""git clone --depth=1 $flakeRepository . && echo '$jsonConfig' > '$configLocation' && nixos-rebuild switch < /dev/null --use-remote-sudo --target-host $targetHost --show-trace --flake ".#$flakeOutput"""",
+              dir = flakeDir,
+              environment = Map(
+                "NIX_SSHOPTS" -> "-t -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
+              )
+            )
+          )
+          .stdout
+
+      } yield flakeDir
+
+      ConfigurableFlakeDeployment(deployment)
+    }