feat: allow setting tls on nixos

for some reason config = lib.mkIf didn't work over whole config, with
'infinite recursion'
Setting particular parts of config helped.

Then - trimming user and group name to under 31 symbols

COPYING

@@ -0,0 +1,674 @@
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Readme.org

@@ -0,0 +1,81 @@
+#+title: Readme
+* Licence:
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <https://www.gnu.org/licenses/>.
+* Running dev
+need 3 teminals
+** start backend
+in sbt
+#+begin_src sbt
+backend/run
+#+end_src
+** continuous ScalaJS compilation
+in sbt
+#+begin_src sbt
+project frontend
+~fastLinkJS
+#+end_src
+** start Vite
+#+begin_src bash
+npm run dev
+#+end_src
+
+- starting to serve frontend at localhost:5173
+- started forwarding /api requests to localhost:8080 - backend
+* Prod deployment (alpha version)
+** Nix managed server:
+*** build and copy backend
+#+begin_src bash
+sbt backend/assembly
+scp -r backend/target/scala-3.2.0/backend-assembly-0.1.1.jar  <your-server>:~/Downloads/backend-assembly-0.1.1.jar
+#+end_src
+
+*** build and copy frontend
+#+begin_src bash
+npm run build
+scp -r dist/*  <your-server>:/var/www/planning-poker-grargh
+#+end_src
+*** start backend
+#+begin_src bash
+nix shell --extra-experimental-features nix-command --extra-experimental-features flakes nixpkgs#jdk
+java -jar ~/Downloads/backend-assembly-0.1.1.jar &
+#+end_src
+**** to kill / restart
+#+begin_src bash
+ps aux | grep backend-assembly
+kill <id of found backend java process>
+#+end_src
+**** TODO make nix home-manager module with systemd service
+*** configure nginx
+#+begin_src nix
+services.nginx.virtualHosts."planning-poker.sunshine.industries" = {
+    root = "/var/www/planning-poker-grargh"; # copied manually
+};
+
+services.nginx.virtualHosts."planning-poker.sunshine.industries".locations."/api" = {
+  proxyPass = "http://127.0.0.1:8080"; # started manually
+  proxyRedirect = "off";
+  extraConfig = ''
+    rewrite ^/api/(.*)$ /$1 break;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+
+    # Add the following lines for WebSocket support
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+  '';
+};
+#+end_src

backend/src/main/scala/industries/sunshine/planningpoker/Auth.scala

@@ -49,7 +49,7 @@ object Auth {
           ResponseCookie(
             name = authcookieName,
             content = newSessionId.toString(),
-            secure = true
+            secure = false
           )
         )
     }
@@ -74,7 +74,7 @@ object Auth {
           ResponseCookie(
             name = authcookieName,
             content = "",
-            secure = true
+            secure = false // TODO make true after enabling https
           ).clearCookie
         )
     }

build.sbt

@@ -34,7 +34,8 @@ lazy val frontend = project
     libraryDependencies += "org.scala-js" %%% "scalajs-dom" % "2.4.0",
     libraryDependencies += "com.raquo" %%% "laminar" % "15.0.1",
     libraryDependencies += "io.laminext" %%% "websocket-circe" % "0.15.0",
-    libraryDependencies += "io.laminext" %%% "fetch-circe" % "0.15.0"
+    libraryDependencies += "io.laminext" %%% "fetch-circe" % "0.15.0",
+    libraryDependencies += "io.laminext" %%% "validation-cats" % "0.15.0"
   )
   .dependsOn(common.js)
 

common/src/main/scala/industries/sunshine/planningpoker/Models.scala

@@ -17,6 +17,7 @@ object Models {
     *   \- whether current player has access to button to finish the round
     */
   final case class RoomStateView(
+      roomName: String,
       players: List[Player],
       me: PlayerID,
       allowedCards: List[String],
@@ -26,6 +27,7 @@ object Models {
 
   object RoomStateView {
     val empty = RoomStateView(
+      "",
       List.empty,
       PlayerID(0),
       List.empty,
@@ -70,6 +72,7 @@ object Models {
         .find(_.id == playerId)
         .fold(ifEmpty = RoomStateView.empty)((me: Player) =>
           RoomStateView(
+            id.name,
             players,
             me.id,
             allowedCards,

common/src/main/scala/industries/sunshine/planningpoker/TestModels.scala

@@ -24,79 +24,79 @@ object TestModels {
   // val testSessions = Map(testSessionId -> (testRoomBackend.id, me.id))
   // val testRooms = Map(testRoomBackend.id -> testRoomBackend)
 
-  val testChangesList = List(
-    RoomStateView(
-      players = List(me),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, pony),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = None, alreadyVoted = List(birdy.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony, horsey),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony, horsey),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id, horsey.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony, horsey),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView
-        .Voting(myCard = Some("m"), alreadyVoted = List(birdy.id, horsey.id, pony.id)),
-      canCloseRound = true
-    ),
-    RoomStateView(
-      players = List(me, birdy, pony, horsey),
-      me = me.id,
-      allowedCards = List("xs", "s", "m", "l", "xl"),
-      round = RoundStateView.Viewing(
-        List(me.id -> "m", pony.id -> "l", birdy.id -> "s", horsey.id -> "m")
-      ),
-      canCloseRound = true
-    )
-  )
+  // val testChangesList = List(
+  //   RoomStateView(
+  //     players = List(me),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, pony),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = None, alreadyVoted = List.empty),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = None, alreadyVoted = List(birdy.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony, horsey),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony, horsey),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Voting(myCard = Some("m"), alreadyVoted = List(birdy.id, horsey.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony, horsey),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView
+  //       .Voting(myCard = Some("m"), alreadyVoted = List(birdy.id, horsey.id, pony.id)),
+  //     canCloseRound = true
+  //   ),
+  //   RoomStateView(
+  //     players = List(me, birdy, pony, horsey),
+  //     me = me.id,
+  //     allowedCards = List("xs", "s", "m", "l", "xl"),
+  //     round = RoundStateView.Viewing(
+  //       List(me.id -> "m", pony.id -> "l", birdy.id -> "s", horsey.id -> "m")
+  //     ),
+  //     canCloseRound = true
+  //   )
+  // )
 }

flake.nix

@@ -1,48 +1,127 @@
 {
-  description = "Planning Poker web app. Trying to build something and learn new things";
+  description =
+    "Planning Poker web app. Trying to build something and learn new things";
   inputs.nixpkgs.url = "github:nixos/nixpkgs";
   inputs.flake-utils.url = "github:numtide/flake-utils";
   inputs.sbt-derivation.url = "github:zaninime/sbt-derivation/master";
   inputs.sbt-derivation.inputs.nixpkgs.follows = "nixpkgs";
 
   outputs = { self, nixpkgs, flake-utils, sbt-derivation }:
-    flake-utils.lib.eachDefaultSystem
-      (system:
-        let
-          pkgs = nixpkgs.legacyPackages.${system};
-          packageName = "blanning-poker-grargh";
-          version = "0.1.1";
-        in {
-          devShells.default = pkgs.mkShell {
-            buildInputs = [
-              pkgs.nodejs
-              pkgs.sbt
-              pkgs.scalafmt
-              pkgs.jdk
-              # pkgs.nodePackages.tailwindcss
-              # pkgs.nodePackages.postcss
-            ];
-            shellHook = ''
-              echo "dev env for planning poker BWARGH started"
-            '';
-          };
-          packages.backend = sbt-derivation.lib.mkSbtDerivation rec {
-            inherit pkgs version;
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        packageName = "planning-poker-kazbegi";
+        backendName = "${packageName}-backend";
+        version = "0.1.1";
+        backendPackage = sbt-derivation.lib.mkSbtDerivation rec {
+          inherit pkgs version;
 
-            # ...and the rest of the arguments
-            pname = "${packageName}-backend";
-            depsSha256 = "sha256-UOEq6KFS4rh4eaKxnRcVOh4SQWn3hnfpzcyRqPnFvco=";
-            src = pkgs.nix-gitignore.gitignoreSource [] ./.;
-            buildPhase = ''
-              sbt backend/assembly
-            '';
-            installPhase = ''
-              mkdir -p $out/bin
-              cp backend/target/scala-*/backend-assembly-*.jar $out/bin/
-            '';
+          # ...and the rest of the arguments
+          pname = "${backendName}";
+          depsSha256 = "sha256-7MNlMeljYqXY4/kK4BXoycp9xUz0tGwCQvPTlE1RIQU=";
+          src = pkgs.nix-gitignore.gitignoreSource [ ] ./.;
+          buildPhase = ''
+            sbt backend/assembly
+          '';
+          installPhase = ''
+            mkdir -p $out/bin
+            cp backend/target/scala-*/backend-assembly-*.jar $out/bin/${pname}.jar
+          '';
+        };
+      in {
+        # Development shell with things required for local dev
+        devShells.default = pkgs.mkShell {
+          buildInputs = [
+            pkgs.nodejs
+            pkgs.sbt
+            pkgs.scalafmt
+            pkgs.jdk
+            # pkgs.nodePackages.tailwindcss
+            # pkgs.nodePackages.postcss
+          ];
+          shellHook = ''
+            echo "dev env for planning poker BWARGH started"
+          '';
+        };
+        # Just the backend jar
+        packages.backend = backendPackage;
+        # Module for NixOS to allow starting backend as SystemD service
+        nixosModules.backendApp = { config, pkgs, ... }:
+          let
+            cfg = config.services.${backendName};
+            lib = pkgs.lib;
+          in {
+            options.services.${backendName} = {
+              enable =
+                lib.mkEnableOption "My frontendmentor exercise ${backendName}";
 
+              port = lib.mkOption {
+                type = lib.types.int;
+                default = 8080;
+                description = "Port to listen on.";
+              };
+
+              host = lib.mkOption {
+                type = lib.types.str;
+                default = "localhost";
+                description = "Host to bind to.";
+              };
+
+              useNginx = lib.mkOption {
+                type = lib.types.bool;
+                default = true;
+                description = "Whether to use Nginx to proxy requests.";
+              };
+              useHostTls = lib.mkOption {
+                type = lib.types.bool;
+                default = false;
+                description =
+                  "Whether virtual host should enable NixOS ACME certs";
+              };
+            };
+            config.users = lib.mkIf cfg.enable {
+              groups."${backendName}" = { };
+              users."${backendName}" = {
+                isSystemUser = true;
+                group = "${backendName}";
+              };
+            };
+            config.systemd.services.${backendName} = lib.mkIf cfg.enable {
+              description = "Exercise app ${backendName}";
+              wantedBy = [ "multi-user.target" ];
+              after = [ "network.target" ];
+              startLimitIntervalSec = 30;
+              startLimitBurst = 10;
+              serviceConfig =
+                let serverHost = if cfg.useNginx then "localhost" else cfg.host;
+                in {
+                  ExecStart =
+                    "${pkgs.jdk}/bin/java -jar ${backendPackage}/bin/${backendName}.jar -p ${
+                      toString cfg.port
+                    } --host ${serverHost}";
+                  WorkingDirectory = "${backendPackage}/bin";
+                  Restart = "on-failure";
+                  User = "${backendName}";
+                  Group = "${backendName}";
+                };
+            };
+            config.services.nginx.virtualHosts.${cfg.host} = {
+              forceSSL = cfg.useHostTls;
+              enableACME = cfg.useHostTls;
+              locations."/api" = lib.mkIf cfg.enable {
+                proxyPass = "http://127.0.0.1:${toString cfg.port}";
+                # this is config for websocket
+                proxyWebsockets = true;
+                extraConfig = ''
+                  rewrite ^/api/(.*)$ /$1 break;
+                  proxy_set_header Host $host;
+                  proxy_set_header X-Real-IP $remote_addr;
+                  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+                  proxy_set_header X-Forwarded-Proto $scheme;
+                '';
+              };
+            };
           };
-        }
-      );
+      });
   # see https://serokell.io/blog/practical-nix-flakes
 }

frontend/src/main/scala/industries/sunshine/planningpoker/Header.scala

@@ -24,7 +24,7 @@ object Header {
 
     div(
       className := "h-24 w-full flex flex-for justify-center items-center bg-green-200",
-      p(className := "text-2xl", "Planning Poker Grargh (nonpretty prealpha version)"),
+      p(className := "text-2xl", "Planning Poker Kazbegi (nonpretty prealpha version)"),
       child <-- loggedInSignal.map(if (_) logoutButton else cachedEmpty)
     )
   }

frontend/src/main/scala/industries/sunshine/planningpoker/JoinRoomComponent.scala

@@ -6,6 +6,9 @@ import com.raquo.laminar.api.L.{*, given}
 import io.laminext.fetch.Fetch
 import io.laminext.fetch.circe._
 
+import io.laminext.syntax.core._
+import io.laminext.syntax.validation._
+
 import scala.util.Failure
 import scala.util.Success
 
@@ -29,7 +32,8 @@ object JoinRoomComponent {
       value <-- data.signal,
       onInput.mapToValue --> data.writer
     )
-  )
+  ).validated(V.nonBlank("name must not be blank"))
+
   def passInput(data: Var[String], placeholderText: String) = input(
     tpe := "password",
     className := "border-2 m-1 rounded",
@@ -104,15 +108,36 @@ object JoinRoomComponent {
         } --> responseReceived
     )
 
+    val roomNameInput = nameInput(roomNameVar, "Enter room name:")
+    val roomPassInput = passInput(roomPassVar, "room password")
+    val nickNameInput = nameInput(nicknameVar, "Enter your nickname:")
+    val nickPassInput = passInput(nicknamePass, "nickname pass")
     div(
       className := "bg-green-50 w-full h-full flex justify-center",
       div(
         className := "w-60 flex flex-col justify-center",
         "Logging in:",
-        nameInput(roomNameVar, "Enter room name:"),
-        passInput(roomPassVar, "room password"),
-        nameInput(nicknameVar, "Enter your nickname:"),
-        passInput(nicknamePass, "nickname pass:"),
+        roomNameInput,
+        div(
+          child.maybe <-- roomNameInput.validationError.optionMap(errors =>
+            span(
+              cls := "text-red-700 text-sm",
+              errors.map(error => div(error))
+            )
+          )
+        ),
+        roomPassInput,
+        label("Alert: no https, please use throwaway passwords"),
+        nickNameInput,
+        div(
+          child.maybe <-- nickNameInput.validationError.optionMap(errors =>
+            span(
+              cls := "text-red-700 text-sm",
+              errors.map(error => div(error))
+            )
+          )
+        ),
+        nickPassInput,
         submitButton,
         newRoomButton,
         div(

frontend/src/main/scala/industries/sunshine/planningpoker/OtherPlayers.scala

@@ -33,23 +33,37 @@ object OtherPlayers {
   def renderPlayer(p: Signal[(Player, Int)], cardsAmount: Signal[Int]): Element = {
     val xOffsetStyleSignal = p.map(_._2)
     div(
-      className := "bg-green-200 border-b-2 border-black rounded p-2 m-2 absolute drop-shadow-xl",
-      // left <-- p.map(tuple => ((1 + tuple._2) * 10000).toString()),
-      styleAttr <-- p.map(tuple => s"left: ${(1 + tuple._2) * 100}px"),
+      className := "bg-green-200 border-b-2 border-black rounded p-2 m-2 absolute drop-shadow-xl m-3",
+      styleAttr <-- p.map(tuple => s"left: ${(0 + tuple._2) * 200}px"),
       child.text <-- p.map(_._1.name),
       renderHandCardBacks(cardsAmount)
     )
   }
 
+  /**
+   * adds css variables to be used in tailwindcss classes
+   */
+  def dynamicCardStyle(index: Int, totalCards: Int): String = {
+    val offCenterIndex = 2*index - (totalCards + 1)
+    val maxOffCenter = (totalCards + 1) / 2
+    val angle = Math.round((offCenterIndex / maxOffCenter.toDouble) * 25)
+    val xOffset = (offCenterIndex * 0.2)
+    s" --custom-rotate: ${angle}deg; --custom-x-translate: ${xOffset}rem; "
+  }
+
   def renderHandCardBacks(amountSignal: Signal[Int]): Element = {
-    def renderCard(index: Int): Element =
+    def renderCard(index: Int, totalCards: Int): Element =
       div(
-        className := "w-8 h-12 rounded bg-green-500 text-yellow m-1 border border-green-700 drop-shadow-md"
+        className := "w-8 h-12 rounded bg-green-500 text-yellow m-1 border border-green-700 drop-shadow-md",
+        className := "origin-bottom rotate-[--custom-rotate] translate-x-[--custom-x-translate]",
+        className := "absolute start-5",
+        styleAttr := dynamicCardStyle(index, totalCards),
+
       )
 
     div(
-      className := "flex flex-row",
-      children <-- amountSignal.map { amount => (1 to amount).map(renderCard) }
+      className := "relative h-16 w-20",
+      children <-- amountSignal.map { amount => (1 to amount).map(renderCard(_, amount)) }
     )
   }
 

frontend/src/main/scala/industries/sunshine/planningpoker/OwnHandControls.scala

@@ -12,32 +12,50 @@ object OwnHandControls {
   def render(roomStateSignal: Signal[RoomStateView]): Element = {
     val cardTypesSignal = roomStateSignal.map(myUnselectedCards(_))
     div(
-      className := "flex flex-row justify-center",
-      children <-- cardTypesSignal.map(_.map(renderCard(_)))
+      className := " h-1/3 relative",
+      children <-- cardTypesSignal.map(cards => cards.map(renderCard(_, cards.size))),
     )
   }
 
-  private def renderCard(value: String): Element = {
+  /**
+   * adds css variables to be used in tailwindcss classes
+   */
+  def dynamicCardStyle(index: Int, totalCards: Int): String = {
+    val offCenterIndex = 2*index - (totalCards + 1)
+    val maxOffCenter = (totalCards + 1) / 2
+    val angle = Math.round((offCenterIndex / maxOffCenter.toDouble) * 17)
+    val xOffset = offCenterIndex * 1.4
+    val yOffset = -1.7 + Math.pow( Math.abs( offCenterIndex ), 1.5) * 0.2
+    s" --custom-rotate: ${angle}deg; --custom-x-translate: ${xOffset}rem; --custom-y-translate: ${yOffset}rem"
+  }
+
+  private def renderCard(cardWithIndex: (String, Int), totalCards: Int): Element = {
+    val (value, index) = cardWithIndex
     val submitVote = Fetch.get(s"/api/vote/$value").text
 
     div(
       className := "cursor-pointer w-24 h-48 m-1 rounded-l flex justify-center items-center m-3 text-black bg-gray-50 border-black border-2 drop-shadow-md",
-      className := "hover:-translate-y-2 hover:scale-[1.02] hover:drop-shadow-xl rounded-lg hover:bg-gray-100 ease-linear duration-200",
+      className := " hover:-translate-y-8 hover:scale-[1.05] hover:z-50 hover:drop-shadow-xl rounded-lg hover:bg-white ease-linear duration-200",
+      className := "absolute origin-bottom start-1/2 rotate-[--custom-rotate] translate-x-[--custom-x-translate] translate-y-[--custom-y-translate]",
+      styleAttr := dynamicCardStyle(index, totalCards),
       onClick.flatMap(_ => submitVote) --> Observer(resp => g.console.info(resp.toString())),
       div(
-        className := "-rotate-45 text-xl",
-        value
+        className := "-rotate-45 text-3xl",
+        value,
       )
     )
   }
 
-  private def myUnselectedCards(state: RoomStateView): List[String] = {
-    state.round match {
+  private def myUnselectedCards(state: RoomStateView): List[(String, Int)] = {
+    val allCards = state.allowedCards
+    val cards = state.round match {
       case RoundStateView.Voting(myCard, _) =>
-        state.allowedCards.filterNot(value => myCard.contains(value))
+        allCards.filterNot(value => myCard.contains(value))
       case RoundStateView.Viewing(votes) =>
-        state.allowedCards.filterNot(value => votes.toMap.get(state.me).contains(value))
+        allCards.filterNot(value => votes.toMap.get(state.me).contains(value))
     }
+
+    cards.zip(1 to state.allowedCards.size)
   }
 
 }

frontend/src/main/scala/industries/sunshine/planningpoker/RoomView.scala

@@ -35,7 +35,11 @@ object RoomView {
     val wsFinalDeathSignal = wsStream.closed.collect { case (_, false) => () }
 
     div(
-      className := "w-full h-full border-4 border-amber-900 flex flex-col",
+      className := "w-full h-full border-4 border-amber-900 flex flex-col relative",
+      div(
+        className := "absolute top-2 right-2",
+        child.text <-- roomStateSignal.map(st => s"Room name: '${st.roomName}'"),
+      ),
       OtherPlayers.render(roomStateSignal),
       TableView.renderTable(roomStateSignal),
       OwnHandControls.render(roomStateSignal),

index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/vite.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Vite App</title>
+    <title>Planning Poker Kazbegi : unpretty prealpha version</title>
   </head>
   <body>
     <div id="app"></div>

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "planning-poker-grargh",
+  "name": "planning-poker-kazbegi",
   "version": "0.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "planning-poker-grargh",
+      "name": "planning-poker-kazbegi",
       "version": "0.0.0",
       "devDependencies": {
         "@scala-js/vite-plugin-scalajs": "^1.0.0",

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "planning-poker-grargh",
+  "name": "planning-poker-kazbegi",
   "private": true,
   "version": "0.0.0",
   "type": "module",