X-Git-Url: https://git.auder.net/images/diag_mark.svg?a=blobdiff_plain;f=client%2Fsrc%2Fviews%2FGame.vue;h=114b86b458ca13f72f0f8d1a706d2a00b6d78611;hb=afc426016772300cc2812e8f96dd964bc6ae739d;hp=2ef43c36f6afb8a423b316710f64e0a470b7fde1;hpb=6dd02928259482332d639bb71d2c44ff684fcfb5;p=vchess.git

diff --git a/client/src/views/Game.vue b/client/src/views/Game.vue
index 2ef43c36..114b86b4 100644
--- a/client/src/views/Game.vue
+++ b/client/src/views/Game.vue
@@ -1,37 +1,44 @@
-<!-- TODO: component Game, + handle players + observers connect/disconnect
-  event = "gameconnect" ...etc
-  connect/disconnect with sid+name (ID not required); name slightly redundant but easier
-quand on arrive dans la partie, on poll les sids pour savoir qui est en ligne (ping)
-(éventuel échange lastate avec les connectés, pong ...etc)
-ensuite quand qqun se deco il suffit d'écouter "disconnect"
-pareil quand quelqu'un reco.
-(c'est assez rudimentaire et écoute trop de messages, mais dans un premier temps...)
-      // TODO: [in game] send move + elapsed time (in milliseconds); in case of "lastate" message too
-// TODO: if I'm an observer and player(s) disconnect/reconnect, how to find me ?
-//      onClick :: ask full game to remote player, and register as an observer in game
-//      (use gameId to communicate)
-//      on landing on game :: if gameId not found locally, check remotely
-//      ==> il manque un param dans game : "remoteId"
--->
 <template lang="pug">
 .row
   .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
-    BaseGame(:game="game" :vr="vr" ref="basegame" @newmove="processMove")
-    .button-group(v-if="game.mode!='analyze'")
+    input#modalAbort.modal(type="checkbox")
+    div(role="dialog" aria-labelledby="abortBoxTitle")
+      .card.smallpad.small-modal.text-center
+        label.modal-close(for="modalAbort")
+        h3#abortBoxTitle.section {{ st.tr["Terminate game?"] }}
+        button(@click="abortGame") {{ st.tr["Sorry I have to go"] }}
+        button(@click="abortGame") {{ st.tr["Game seems over"] }}
+        button(@click="abortGame") {{ st.tr["Game is too boring"] }}
+    BaseGame(:game="game" :vr="vr" ref="basegame"
+      @newmove="processMove" @gameover="gameOver")
+    div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
+    div Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
+    .button-group(v-if="game.mode!='analyze' && game.score=='*'")
       button(@click="offerDraw") Draw
-      button(@click="abortGame") Abort
+      button(@click="() => abortGame()") Abort
       button(@click="resign") Resign
     div(v-if="game.mode=='corr'")
-      textarea(v-show="score=='*' && vr.turn==mycolor" v-model="corrMsg")
+      textarea(v-show="score=='*' && vr.turn==game.mycolor" v-model="corrMsg")
       div(v-show="cursor>=0") {{ moves[cursor].message }}
 </template>
 
+<!--
+// TODO: movelist dans basegame et chat ici
+// ==> après, implémenter/vérifier les passages de challenges + parties en cours
+// observer,
+// + problèmes, habiller et publier. (+ corr...)
+// when send to chat (or a move), reach only this group (send gid along)
+-->
+
 <script>
 import BaseGame from "@/components/BaseGame.vue";
 //import Chat from "@/components/Chat.vue";
 //import MoveList from "@/components/MoveList.vue";
 import { store } from "@/store";
-import { GameStorage } from "@/utils/storage";
+import { GameStorage } from "@/utils/gameStorage";
+import { ppt } from "@/utils/datetime";
+import { extractTime } from "@/utils/timeControl";
+import { ArrayFun } from "@/utils/array";
 
 export default {
   name: 'my-game',
@@ -42,164 +49,236 @@ export default {
   data: function() {
     return {
       st: store.state,
-      gameRef: {id: "", rid: ""}, //given in URL (rid = remote ID)
-      game: {}, //passed to BaseGame
+      gameRef: { //given in URL (rid = remote ID)
+        id: "",
+        rid: ""
+      },
+      game: {players:[{name:""},{name:""}]}, //passed to BaseGame
+      corrMsg: "", //to send offline messages in corr games
+      virtualClocks: [0, 0], //initialized with true game.clocks
       vr: null, //"variant rules" object initialized from FEN
-      drawOfferSent: false, //did I just ask for draw? (TODO: draw variables?)
-      people: [], //potential observers (TODO)
+      drawOffer: "", //TODO: use for button style
+      people: [], //players + observers
     };
   },
   watch: {
-    '$route' (to, from) {
-      if (!!to.params["id"])
+    "$route": function(to, from) {
+      this.gameRef.id = to.params["id"];
+      this.gameRef.rid = to.query["rid"];
+      this.loadGame();
+    },
+    "game.clocks": function(newState) {
+      if (this.game.moves.length < 2)
       {
-        this.gameRef.id = to.params["id"];
-        this.gameRef.rid = to.query["rid"];
-        this.loadGame();
+        // 1st move not completed yet: freeze time
+        this.virtualClocks = newState.map(s => ppt(s));
+        return;
       }
+      const currentTurn = this.vr.turn;
+      const colorIdx = ["w","b"].indexOf(currentTurn);
+      let countdown = newState[colorIdx] -
+        (Date.now() - this.game.initime[colorIdx])/1000;
+      this.virtualClocks = [0,1].map(i => {
+        const removeTime = i == colorIdx
+          ? (Date.now() - this.game.initime[colorIdx])/1000
+          : 0;
+        return ppt(newState[i] - removeTime);
+      });
+      const myTurn = (currentTurn == this.game.mycolor);
+      let clockUpdate = setInterval(() => {
+        if (countdown <= 0 || this.vr.turn != currentTurn || this.game.score != "*")
+        {
+          clearInterval(clockUpdate);
+          if (countdown <= 0 && myTurn)
+          {
+            this.$refs["basegame"].endGame(
+              this.game.mycolor=="w" ? "0-1" : "1-0", "Time");
+            const oppsid = this.getOppSid();
+            if (!!oppsid)
+            {
+              this.st.conn.send(JSON.stringify({
+                code: "timeover",
+                target: oppsid,
+              }));
+            }
+          }
+        }
+        else
+        {
+          // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
+          this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
+        }
+      }, 1000);
     },
   },
+  // TODO: redundant code with Hall.vue (related to people array)
   created: function() {
+    // Always add myself to players' list
+    const my = this.st.user;
+    this.people.push({sid:my.sid, id:my.id, name:my.name});
     if (!!this.$route.params["id"])
     {
       this.gameRef.id = this.$route.params["id"];
       this.gameRef.rid = this.$route.query["rid"];
       this.loadGame();
     }
-    // TODO: how to know who is observing ? Send message to everyone with game ID ?
-    // and then just listen to (dis)connect events
-
-
-    // server always send "connect on " + URL ; then add to observers if game...
-    // detect multiple tabs connected (when connect ask server if my SID is already in use)
-// router when access a game page tell to server I joined + game ID (no need rid)
-// and ask server for current joined (= observers)
-// when send to chat (or a move), reach only this group (send gid along)
-
-    // --> doivent être enregistrés comme observers au niveau du serveur...
-    // non: poll users + events startObserving / stopObserving
-
-
-    // TODO: also handle "draw accepted" (use opponents array?)
-    // --> must give this info also when sending lastState...
-    // and, if all players agree then OK draw (end game ...etc)
-    const socketMessageListener = msg => {
+    // 0.1] Ask server for room composition:
+    const funcPollClients = () => {
+      this.st.conn.send(JSON.stringify({code:"pollclients"}));
+    };
+    if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
+      funcPollClients();
+    else //socket not ready yet (initial loading)
+      this.st.conn.onopen = funcPollClients;
+    this.st.conn.onmessage = this.socketMessageListener;
+    const socketCloseListener = () => {
+      store.socketCloseListener(); //reinitialize connexion (in store.js)
+      this.st.conn.addEventListener('message', this.socketMessageListener);
+      this.st.conn.addEventListener('close', socketCloseListener);
+    };
+    this.st.conn.onclose = socketCloseListener;
+  },
+  methods: {
+    getOppSid: function() {
+      if (!!this.game.oppsid)
+        return this.game.oppsid;
+      const opponent = this.people.find(p => p.id == this.game.oppid);
+      return (!!opponent ? opponent.sid : null);
+    },
+    socketMessageListener: function(msg) {
       const data = JSON.parse(msg.data);
-      let L = undefined;
       switch (data.code)
       {
-        case "newmove":
-          // TODO: observer on dark games must see all board ? Or alternate ? (seems better)
-          // ...or just see nothing as on buho21
-          this.$refs["basegame"].play(
-            data.move, this.game.vname!="Dark" ? "animate" : null);
-          break;
-        case "pong": //received if we sent a ping (game still alive on our side)
-          if (this.gameRef.id != data.gameId)
-            break; //games IDs don't match: the game is definitely over...
-          this.oppConnected = true;
-          // Send our "last state" informations to opponent(s)
-          L = this.vr.moves.length;
-          Object.keys(this.opponents).forEach(oid => {
-            this.conn.send(JSON.stringify({
-              code: "lastate",
-              oppid: oid,
-              gameId: this.gameRef.id,
-              lastMove: (L>0?this.vr.moves[L-1]:undefined),
-              movesCount: L,
-            }));
+        // 0.2] Receive clients list (just socket IDs)
+        case "pollclients":
+        {
+          data.sockIds.forEach(sid => {
+            this.people.push({sid:sid, id:0, name:""});
+            // Ask only identity
+            this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
           });
           break;
-        // TODO: refactor this, because at 3 or 4 players we may have missed 2 or 3 moves
-        case "lastate": //got opponent infos about last move
-          L = this.vr.moves.length;
-          if (this.gameRef.id != data.gameId)
-            break; //games IDs don't match: nothing we can do...
-          // OK, opponent still in game (which might be over)
-          if (this.score != "*")
+        }
+        case "askidentity":
+        {
+          // Request for identification: reply if I'm not anonymous
+          if (this.st.user.id > 0)
           {
-            // We finished the game (any result possible)
-            this.conn.send(JSON.stringify({
-              code: "lastate",
-              oppid: data.oppid,
-              gameId: this.gameRef.id,
-              score: this.score,
-            }));
+            this.st.conn.send(JSON.stringify(
+              // people[0] instead of st.user to avoid sending email
+              {code:"identity", user:this.people[0], target:data.from}));
           }
-          else if (!!data.score) //opponent finished the game
-            this.endGame(data.score);
-          else if (data.movesCount < L)
+          break;
+        }
+        case "identity":
+        {
+          let player = this.people.find(p => p.sid == data.user.sid);
+          player.id = data.user.id;
+          player.name = data.user.name;
+          // Sending last state only for live games: corr games are complete
+          if (this.game.type == "live" && this.game.oppsid == player.sid)
           {
-            // We must tell last move to opponent
-            this.conn.send(JSON.stringify({
+            // Send our "last state" informations to opponent
+            const L = this.game.moves.length;
+            this.st.conn.send(JSON.stringify({
               code: "lastate",
-              oppid: this.opponent.id,
-              gameId: this.gameRef.id,
-              lastMove: this.vr.moves[L-1],
-              movesCount: L,
+              target: player.sid,
+              state:
+              {
+                lastMove: (L>0 ? this.game.moves[L-1] : undefined),
+                score: this.game.score,
+                movesCount: L,
+                drawOffer: this.drawOffer,
+                clocks: this.game.clocks,
+              }
             }));
           }
-          else if (data.movesCount > L) //just got last move from him
-            this.play(data.lastMove, "animate");
           break;
-        case "resign": //..you won!
-          this.endGame(this.mycolor=="w"?"1-0":"0-1");
+        }
+        case "newmove":
+          // NOTE: this call to play() will trigger processMove()
+          this.$refs["basegame"].play(data.move,
+            "receive", this.game.vname!="Dark" ? "animate" : null);
           break;
-        // TODO: also use (dis)connect info to count online players?
-        case "gameconnect":
-        case "gamedisconnect":
-          if (this.mode=="human")
+        case "lastate": //got opponent infos about last move
+        {
+          const L = this.game.moves.length;
+          if (data.movesCount > L)
           {
-            const online = (data.code == "connect");
-            // If this is an opponent ?
-            if (!!this.opponents[data.id])
-              this.opponents[data.id].online = online;
-            else
+            // Just got last move from him
+            this.$refs["basegame"].play(data.lastMove,
+              "receive", this.game.vname!="Dark" ? "animate" : null);
+            if (data.score != "*" && this.game.score == "*")
             {
-              // Or an observer ?
-              if (!online)
-                delete this.people[data.id];
-              else
-                this.people[data.id] = data.name;
+              // Opponent resigned or aborted game, or accepted draw offer
+              // (this is not a stalemate or checkmate)
+              this.$refs["basegame"].endGame(data.score, "Opponent action");
             }
+            this.game.clocks = data.clocks; //TODO: check this?
+            this.drawOffer = data.drawOffer; //does opponent offer draw?
           }
           break;
+        }
+        case "resign":
+          this.$refs["basegame"].endGame(
+            this.game.mycolor=="w" ? "1-0" : "0-1", "Resign");
+          break;
+        case "timeover":
+          this.$refs["basegame"].endGame(
+            this.game.mycolor=="w" ? "1-0" : "0-1", "Time");
+          break;
+        case "abort":
+          this.$refs["basegame"].endGame("?", "Abort: " + data.msg);
+          break;
+        case "draw":
+          this.$refs["basegame"].endGame("1/2", "Mutual agreement");
+          break;
+        case "drawoffer":
+          this.drawOffer = "received";
+          break;
+        case "askfullgame":
+          // TODO: just give game; observers are listed here anyway:
+          // ==> mark request SID as someone to send moves to
+          // NOT to all people array: our opponent can send moves too!
+          break;
+        case "fullgame":
+          // and when receiving answer just call loadGame(received_game)
+          this.loadGame(data.game);
+          break;
+        // TODO: drawaccepted (click draw button before sending move
+        // ==> draw offer in move)
+        // ==> on "newmove", check "drawOffer" field
+        case "connect":
+        {
+          this.people.push({name:"", id:0, sid:data.sid});
+          this.st.conn.send(JSON.stringify({code:"askidentity", target:data.sid}));
+          break;
+        }
+        case "disconnect":
+          ArrayFun.remove(this.people, p => p.sid == data.sid);
+          break;
       }
-    };
-    const socketCloseListener = () => {
-      this.conn.addEventListener('message', socketMessageListener);
-      this.conn.addEventListener('close', socketCloseListener);
-    };
-    if (!!this.conn)
-    {
-      this.conn.onmessage = socketMessageListener;
-      this.conn.onclose = socketCloseListener;
-    }
-  },
-  // dans variant.js (plutôt room.js) conn gère aussi les challenges
-  // et les chats dans chat.js. Puis en webRTC, repenser tout ça.
-  methods: {
+    },
     offerDraw: function() {
-      if (!confirm("Offer draw?"))
-        return;
-      // Stay in "draw offer sent" state until next move is played
-      this.drawOfferSent = true;
-      if (this.subMode == "corr")
+      // TODO: also for corr games
+      if (this.drawOffer == "received")
       {
-        // TODO: set drawOffer on in game (how ?)
+        if (!confirm("Accept draw?"))
+          return;
+        const oppsid = this.getOppSid();
+        if (!!oppsid)
+          this.st.conn.send(JSON.stringify({code:"draw", target:oppsid}));
+        this.$refs["basegame"].endGame("1/2", "Mutual agreement");
       }
-      else //live game
+      else if (this.drawOffer == "sent")
+        this.drawOffer = "";
+      else
       {
-        this.opponents.forEach(o => {
-          if (!!o.online)
-          {
-            try {
-              this.conn.send(JSON.stringify({code: "draw", oppid: o.id}));
-            } catch (INVALID_STATE_ERR) {
-              return;
-            }
-          }
-        });
+        if (!confirm("Offer draw?"))
+          return;
+        const oppsid = this.getOppSid();
+        if (!!oppsid)
+          this.st.conn.send(JSON.stringify({code:"drawoffer", target:oppsid}));
       }
     },
     // + conn handling: "draw" message ==> agree for draw (if we have "drawOffered" at true)
@@ -208,53 +287,198 @@ export default {
       // TODO: ignore if preventDrawOffer is set; otherwise show modal box with option "prevent future offers"
       // if accept: send message "draw"
     },
-    abortGame: function() {
-      if (!confirm("Abort the game?"))
-        return;
-      //+ bouton "abort" avec score == "?" + demander confirmation pour toutes ces actions,
-      //send message: "gameOver" avec score "?"
+    abortGame: function(event) {
+      let modalBox = document.getElementById("modalAbort");
+      if (!event)
+      {
+        // First call show options:
+        modalBox.checked = true;
+      }
+      else
+      {
+        modalBox.checked = false; //decision made: box disappear
+        const message = event.target.innerText;
+        // Next line will trigger a "gameover" event, bubbling up till here
+        this.$refs["basegame"].endGame("?", "Abort: " + message);
+        const oppsid = this.getOppSid();
+        if (!!oppsid)
+        {
+          this.st.conn.send(JSON.stringify({
+            code: "abort",
+            msg: message,
+            target: oppsid,
+          }));
+        }
+      }
     },
     resign: function(e) {
       if (!confirm("Resign the game?"))
         return;
-      if (this.mode == "human" && this.oppConnected(this.oppid))
+      const oppsid = this.getOppSid();
+      if (!!oppsid)
       {
-        try {
-          this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
-        } catch (INVALID_STATE_ERR) {
-          return;
-        }
+        this.st.conn.send(JSON.stringify({
+          code: "resign",
+          target: oppsid,
+        }));
       }
-      this.endGame(this.mycolor=="w"?"0-1":"1-0");
+      // Next line will trigger a "gameover" event, bubbling up till here
+      this.$refs["basegame"].endGame(
+        this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
     },
-    // 4 cases for loading a game:
-    //  - from localStorage (one running game I play)
-    //  - from indexedDB (one completed live game)
+    // 3 cases for loading a game:
+    //  - from indexedDB (running or completed live game I play)
     //  - from server (one correspondance game I play[ed] or not)
     //  - from remote peer (one live game I don't play, finished or not)
-    loadGame: function() {
-      GameStorage.get(this.gameRef, async (game) => {
-        this.game = game;
+    loadGame: function(game) {
+      const afterRetrieval = async (game) => {
         const vModule = await import("@/variants/" + game.vname + ".js");
         window.V = vModule.VariantRules;
         this.vr = new V(game.fen);
-      });
-//    // Poll all players except me (if I'm playing) to know online status.
-//    // --> Send ping to server (answer pong if players[s] are connected)
-//    if (this.gameInfo.players.some(p => p.sid == this.st.user.sid))
-//    {
-//      this.game.players.forEach(p => {
-//        if (p.sid != this.st.user.sid)
-//          this.st.conn.send(JSON.stringify({code:"ping", oppid:p.sid}));
-//      });
-//    }
-    },
-    oppConnected: function(uid) {
-      return this.opponents.some(o => o.id == uid && o.online);
+        const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
+        const tc = extractTime(game.timeControl);
+        if (gtype == "corr")
+        {
+          if (game.players[0].color == "b")
+          {
+            // Adopt the same convention for live and corr games: [0] = white
+            [ game.players[0], game.players[1] ] =
+              [ game.players[1], game.players[0] ];
+          }
+          // corr game: needs to compute the clocks + initime
+          game.clocks = [tc.mainTime, tc.mainTime];
+          game.initime = [0, 0];
+          const L = game.moves.length;
+          if (L >= 3)
+          {
+            let addTime = [0, 0];
+            for (let i=2; i<L; i++)
+            {
+              addTime[i%2] += tc.increment -
+                (game.moves[i].played - game.moves[i-1].played);
+            }
+            for (let i=0; i<=1; i++)
+              game.clocks[i] += addTime[i];
+          }
+          if (L >= 1)
+            game.initime[L%2] = game.moves[L-1].played;
+        }
+        const myIdx = game.players.findIndex(p => {
+          return p.sid == this.st.user.sid || p.uid == this.st.user.id;
+        });
+        if (gtype == "live" && game.clocks[0] < 0) //game unstarted
+        {
+          game.clocks = [tc.mainTime, tc.mainTime];
+          game.initime[0] = Date.now();
+          if (myIdx >= 0)
+          {
+            // I play in this live game; corr games don't have clocks+initime
+            GameStorage.update(game.id,
+            {
+              clocks: game.clocks,
+              initime: game.initime,
+            });
+          }
+        }
+        this.game = Object.assign({},
+          game,
+          // NOTE: assign mycolor here, since BaseGame could also be VS computer
+          {
+            type: gtype,
+            increment: tc.increment,
+            mycolor: [undefined,"w","b"][myIdx+1],
+            // opponent sid not strictly required (or available), but easier
+            // at least oppsid or oppid is available anyway:
+            oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
+            oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
+          }
+        );
+      };
+      if (!!game)
+        return afterRetrival(game);
+      if (!!this.gameRef.rid)
+      {
+        // Remote live game
+        this.st.conn.send(JSON.stringify(
+          {code:"askfullgame", target:this.gameRef.rid}));
+        // (send moves updates + resign/abort/draw actions)
+      }
+      else
+      {
+        // Local or corr game
+        GameStorage.get(this.gameRef.id, (game) => {
+          afterRetrieval(game);
+        });
+      }
     },
+    // Post-process a move (which was just played)
     processMove: function(move) {
-      // TODO: process some opponent's move
+      if (!this.game.mycolor)
+        return; //I'm just an observer
+      // Update storage (corr or live)
+      const colorIdx = ["w","b"].indexOf(move.color);
+      // https://stackoverflow.com/a/38750895
+      const allowed_fields = ["appear", "vanish", "start", "end"];
+      const filtered_move = Object.keys(move)
+        .filter(key => allowed_fields.includes(key))
+        .reduce((obj, key) => {
+          obj[key] = move[key];
+          return obj;
+        }, {});
+      // Send move ("newmove" event) to opponent(s) (if ours)
+      let addTime = 0;
+      if (move.color == this.game.mycolor)
+      {
+        if (this.game.moves.length >= 2) //after first move
+        {
+          const elapsed = Date.now() - this.game.initime[colorIdx];
+          // elapsed time is measured in milliseconds
+          addTime = this.game.increment - elapsed/1000;
+        }
+        this.st.conn.send(JSON.stringify({
+          code: "newmove",
+          target: this.game.oppid,
+          move: Object.assign({}, filtered_move, {addTime: addTime}),
+        }));
+      }
+      else
+        addTime = move.addTime; //supposed transmitted
+      const nextIdx = ["w","b"].indexOf(this.vr.turn);
+      GameStorage.update(this.gameRef.id,
+      {
+        fen: move.fen,
+        move:
+        {
+          squares: filtered_move,
+          message: this.corrMsg, //TODO
+          played: Date.now(), //TODO: on server?
+          idx: this.game.moves.length,
+          color: move.color,
+        },
+        clocks: this.game.clocks.map((t,i) => i==colorIdx
+          ? this.game.clocks[i] + addTime
+          : this.game.clocks[i]),
+        initime: this.game.initime.map((t,i) => i==nextIdx
+          ? Date.now()
+          : this.game.initime[i]),
+      });
+      // Also update current game object:
+      this.game.moves.push(move);
+      this.game.fen = move.fen;
+      //TODO: just this.game.clocks[colorIdx] += addTime;
+      this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
+      this.game.initime[nextIdx] = Date.now();
+    },
+    // TODO: this update function should also work for corr games
+    gameOver: function(score) {
+      this.game.mode = "analyze";
+      this.game.score = score;
+      GameStorage.update(this.gameRef.id, { score: score });
     },
   },
 };
 </script>
+
+<style lang="sass">
+// TODO
+</style>