WIP

package.json

@@ -4,7 +4,7 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "vite --host",
     "build": "vite build",
     "preview": "vite preview"
   },

src/main/scala/fahrtenbuch/Database.scala

@@ -12,10 +12,16 @@ import scala.concurrent.Future
 import scala.scalajs.js
 
 import model.Entry
+import model.EntryId
+import rdts.base.Lattice
+import rdts.datatypes.LastWriterWins
+import scala.scalajs.js.Date
+import scala.util.Failure
+import scala.util.Success
 
 object DexieDB {
 
-  private val schemaVersion = 1.0
+  private val schemaVersion = 1.1
 
   private val dexieDB: Dexie = new Dexie.^("fahrtenbuch")
   dexieDB
@@ -31,9 +37,62 @@ object DexieDB {
   val entriesObservable: Observable[Future[Seq[Entry]]] =
     liveQuery(() => getAllEntries())
 
-  def insertEntry(entry: Entry): Future[Any] = {
+  def getEntry(id: EntryId): Future[Option[Entry]] =
-    println(s"inserting Entry $entry")
+    entriesTable
+      .get(id.delegate)
+      .toFuture
+      .map(_.toOption.map(NativeConverter[Entry].fromNative(_)))
+
+  def insertEntry(entry: Entry): Unit = {
+    val e: Future[Option[Entry]] = getEntry(entry.id)
+    e.flatMap {
+      case Some(oldEntry) =>
+        println(s"found old: $oldEntry")
+        println(s"found new: $entry")
+        println(oldEntry.id == entry.id)
+        val newEntry = Lattice[Entry].merge(entry, entry)
+        val newEntry2 = Lattice[Entry].merge(oldEntry, oldEntry)
+        println(oldEntry.id)
+        println(entry.id)
+        val test =
+          Lattice[Entry].merge(
+            Entry(
+              EntryId("1"),
+              LastWriterWins.now(0),
+              LastWriterWins.now(2),
+              LastWriterWins.now(""),
+              LastWriterWins.now(false),
+              LastWriterWins.now("Dirk"),
+              LastWriterWins.now(new Date())
+            ),
+            Entry(
+              EntryId("1"),
+              LastWriterWins.now(0),
+              LastWriterWins.now(2),
+              LastWriterWins.now(""),
+              LastWriterWins.now(false),
+              LastWriterWins.now("Dirk"),
+              LastWriterWins.now(new Date())
+            )
+          )
+        val newEntry3 =
+          Lattice[Entry].merge(oldEntry, entry.copy(id = oldEntry.id))
+        println("yolo")
+        Future.unit
+      // entriesTable.put(newEntry.toNative).toFuture
+      case _ =>
         entriesTable.put(entry.toNative).toFuture
+    }.onComplete {
+      case Failure(exception) => println(s"failed with $exception")
+      case Success(value)     => ()
+    }
+//        .toFuture
+//        .map(e =>
+//          if e.isUndefined then entriesTable.put(entry.toNative).toFuture
+//          else
+//            val dbEntry = NativeConverter[Entry].fromNative(e)
+//            Lattice[Entry].merge(entry, dbEntry)
+//        )
   }
 
   def getAllEntries(): Future[Seq[Entry]] = {

src/main/scala/fahrtenbuch/Main.scala

@@ -13,11 +13,11 @@ import components.AppComponent
 
 @main
 def Fahrtenbuch(): Unit =
-  val appComponent = AppComponent(Main.allEntries)
+  val appComponent = AppComponent(Main.allEntries, Trystero.onlineStatus)
 
   renderOnDomContentLoaded(
     dom.document.getElementById("app"),
-    AppComponent(Main.allEntries).render()
+    appComponent.render()
   )
 
 object Main {

src/main/scala/fahrtenbuch/Networking.scala

@@ -1,6 +1,7 @@
 package fahrtenbuch
 
 import com.raquo.laminar.api.L.*
+import org.scalajs.dom
 import org.scalajs.dom.RTCConfiguration
 import org.scalajs.dom.RTCIceServer
 import org.scalajs.dom.RTCPeerConnection
@@ -12,6 +13,10 @@ import typings.trystero.mod.joinRoom
 import typings.trystero.mod.selfId
 
 import scala.scalajs.js
+import typings.trystero.mod.ActionProgress
+import typings.trystero.mod.ActionSender
+import typings.trystero.mod.ActionReceiver
+import model.Entry
 
 object Trystero:
   private val eturn = new RTCIceServer:
@@ -35,11 +40,13 @@ object Trystero:
   }
 
   // Public API
-  val room: Room = joinRoom(MyConfig, "fahrtenbuch")
+  val roomId = dom.window.location.hash
-  val peerList: Var[List[(String, RTCPeerConnection)]] = Var(List.empty)
+  val room: Room = joinRoom(MyConfig, roomId)
+  println(s"joining room $roomId")
   val userId: Var[String] = Var(selfId)
 
-  // listen for incoming messages
+  // track online peers
+  val peerList: Var[List[(String, RTCPeerConnection)]] = Var(List.empty)
   def updatePeers(): Unit =
     peerList.set(room.getPeers().toList)
   println(s"my peer ID is $selfId")
@@ -51,3 +58,14 @@ object Trystero:
     println(s"$peerId left")
     updatePeers()
   )
+  val onlineStatus: Signal[Boolean] = peerList.signal.map(_.nonEmpty)
+
+object Actions:
+  // setup actions
+  private val entryAction: js.Tuple3[ActionSender[js.Any], ActionReceiver[
+    js.Any
+  ], ActionProgress] = Trystero.room.makeAction[js.Any]("entry")
+  private val trysteroReceiveEntry: ActionReceiver[js.Any] = entryAction._2
+
+  def sendEntry(entry: Entry): Unit =
+    entryAction._1(entry.toNative)

src/main/scala/fahrtenbuch/Sync.scala

@@ -0,0 +1,7 @@
+package fahrtenbuch
+import com.raquo.laminar.api.L.*
+import fahrtenbuch.model.Entry
+
+object Sync:
+  val entrySyncOut =
+    Observer[Entry](onNext = Actions.sendEntry(_))

src/main/scala/fahrtenbuch/components/AppComponent.scala

@@ -1,17 +1,19 @@
 package fahrtenbuch.components
 
 import com.raquo.laminar.api.L.*
-import fahrtenbuch.model.Entry
+import fahrtenbuch.model.{Entry, EntryId}
 import fahrtenbuch.Main.entryEditBus
-import rdts.base.Uid
 
-class AppComponent(allEntries: Signal[Set[Entry]]):
+class AppComponent(
+    allEntries: Signal[Set[Entry]],
+    onlineStatus: Signal[Boolean]
+):
   // tracks whenever a user clicks on an edit button
-  val editClickBus = new EventBus[(Uid, Boolean)]
+  val editClickBus = new EventBus[(EntryId, Boolean)]
 
   // tracks which entries are currently being edited
-  val editStateSignal: Signal[Map[Uid, Boolean]] =
+  val editStateSignal: Signal[Map[EntryId, Boolean]] =
-    editClickBus.stream.foldLeft(Map.empty[Uid, Boolean]) {
+    editClickBus.stream.foldLeft(Map.empty[EntryId, Boolean]) {
       case (acc, (id, value)) =>
         acc + (id -> value)
     }
@@ -37,7 +39,7 @@ class AppComponent(allEntries: Signal[Set[Entry]]):
   def render(): HtmlElement =
     div(
       cls := "app content",
-      h1("Fahrtenbuch"),
+      h1("Fahrtenbuch", OnlineStatusComponent(onlineStatus).render()),
       table(
         cls := "table",
         thead(

src/main/scala/fahrtenbuch/components/EntryComponent.scala

@@ -1,16 +1,15 @@
 package fahrtenbuch.components
-import fahrtenbuch.model.Entry
+import fahrtenbuch.model.{Entry, EntryId}
 import com.raquo.laminar.nodes.ReactiveHtmlElement
 import org.scalajs.dom.HTMLTableRowElement
 import com.raquo.laminar.api.L.*
 import com.raquo.laminar.api.features.unitArrows
-import rdts.base.Uid
 import scala.util.Try
 
 class EntryComponent(
     entry: Entry,
     editMode: Boolean,
-    editClickBus: EventBus[(Uid, Boolean)],
+    editClickBus: EventBus[(EntryId, Boolean)],
     entryEditBus: EventBus[Entry]
 ):
   def render: ReactiveHtmlElement[HTMLTableRowElement] = {
@@ -93,11 +92,12 @@ class EntryComponent(
               editClickBus.emit(entry.id, false)
               entryEditBus.emit(
                 entry.copy(
-                  startKm =
+                  driver = entry.driver.write(driverInput.ref.value)
-                    entry.startKm.write(startKmInput.ref.value.toDouble),
+//                  startKm =
-                  endKm = entry.endKm.write(endKmInput.ref.value.toDouble),
+//                    entry.startKm.write(startKmInput.ref.value.toDouble),
-                  animal = entry.animal.write(animalInput.ref.value),
+//                  endKm = entry.endKm.write(endKmInput.ref.value.toDouble),
-                  paid = entry.paid.write(paidCheckbox.ref.checked)
+//                  animal = entry.animal.write(animalInput.ref.value),
+//                  paid = entry.paid.write(paidCheckbox.ref.checked)
                 )
               )
             },

src/main/scala/fahrtenbuch/components/NewEntryInput.scala

@@ -5,8 +5,7 @@ import com.raquo.laminar.api.L.*
 
 import com.raquo.laminar.api.features.unitArrows
 import fahrtenbuch.Main.entryEditBus
-import fahrtenbuch.model.Entry
+import fahrtenbuch.model.{Entry, EntryId}
-import rdts.base.Uid
 import rdts.datatypes.LastWriterWins
 import scala.scalajs.js.Date
 import scala.util.Try
@@ -77,7 +76,7 @@ class NewEntryInput(showNewEntryField: Var[Boolean]):
         button(
           cls := "button is-success",
           onClick --> {
-            val id = Uid.gen()
+            val id = EntryId.gen()
             val driver = LastWriterWins.now(newEntryDriver.ref.value)
             val startKm = LastWriterWins.now(newEntryStartKm.ref.value.toDouble)
             val endKm = LastWriterWins.now(newEntryEndKm.ref.value.toDouble)

src/main/scala/fahrtenbuch/components/OnlineStatusComponent.scala

@@ -0,0 +1,17 @@
+package fahrtenbuch.components
+
+import com.raquo.laminar.api.L.*
+import com.raquo.airstream.core.Signal
+
+class OnlineStatusComponent(online: Signal[Boolean]):
+  def render(): HtmlElement = {
+    val status = online.map {
+      case true  => "Online"
+      case false => "Offline"
+    }
+
+    span(
+      cls := "tag",
+      text <-- status
+    )
+  }

src/main/scala/fahrtenbuch/model/Entry.scala

@@ -6,9 +6,26 @@ import org.getshaka.nativeconverter.NativeConverter
 import org.getshaka.nativeconverter.ParseState
 import scala.scalajs.js
 import rdts.datatypes.LastWriterWins
+import rdts.base.Lattice
+
+opaque type EntryId = Uid
+object EntryId:
+  def gen(): EntryId = Uid.gen()
+  def apply(id: String): EntryId = Uid.predefined(id)
+  extension (id: EntryId) def delegate: String = id.delegate
+
+  given NativeConverter[EntryId] with {
+    extension (a: EntryId)
+      override def toNative: js.Any =
+        a.delegate
+    override def fromNative(ps: ParseState): Uid =
+      Uid.predefined(ps.json.asInstanceOf[String])
+  }
+
+  given Lattice[EntryId] = Lattice.assertEquals
 
 case class Entry(
-    id: Uid,
+    id: EntryId,
     startKm: LastWriterWins[Double],
     endKm: LastWriterWins[Double],
     animal: LastWriterWins[String],
@@ -24,10 +41,4 @@ case class Entry(
   def costTotal: Double = costGas + costWear
 
 object Entry:
-  given NativeConverter[Uid] with {
+  given Lattice[Entry] = Lattice.derived
-    extension (a: Uid)
-      override def toNative: js.Any =
-        a.delegate
-    override def fromNative(ps: ParseState): Uid =
-      Uid.predefined(ps.json.asInstanceOf[String])
-  }