Notify when enough players are active

Signed-off-by: James Ketrenos <james_eikona@ketrenos.com>

server/routes/games.js

@@ -305,12 +305,20 @@ const setPlayerColor = (game, session, color) => {
     return;
   }
 
+  const priorActive = getActiveCount(game);
+
   if (player) {
     /* Deselect currently active player for this session */
     clearPlayer(player);
+    let message;
+    if (game.state !== 'lobby') {
+      message = `${name} has exited to the lobby and is no longer playing as ${session.color}.`
+    } else {
+      message = `${name} is no longer ${session.color}.`;
+    }
     game.chat.push({
       date: Date.now(),
-      message: `${name} is no longer ${session.color}.`
+      message: message
     });
     session.player = undefined;
     session.color = undefined;
@@ -341,14 +349,25 @@ const setPlayerColor = (game, session, color) => {
 
   /* All good -- set this player to requested selection */
   session.player = getPlayer(game, color);
-  
+
   session.player.status = `Active`;
   session.player.lastActive = Date.now();
   session.color = color;
   game.chat.push({
+    from: color,
     date: Date.now(),
     message: `${session.name} has chosen to play as ${color}.`
   });
+
+  const afterActive = getActiveCount(game);
+  if (afterActive !== priorActive) {
+    if (priorActive < 2 && afterActive >= 2) {
+      game.chat.push({
+        date: Date.now(),
+        message: `There are now enough players to start the game when you are ready.`
+      });
+    }
+  }
 };
 
 router.put("/:id/:action/:value?", async (req, res) => {
@@ -470,12 +489,18 @@ router.put("/:id", (req, res/*, next*/) => {
   return sendGame(req, res, game);
 });
 
-const sendGame = async (req, res, game, error) => {
+const getActiveCount = (game) => {
   let active = 0;
   for (let color in game.players) {
     const player = game.players[color];
     active += ((player.status && player.status != 'Not active') ? 1 : 0);
   }
+  return active;
+}
+
+const sendGame = async (req, res, game, error) => {
+  const active = getActiveCount(game);
+
   if (active < 2 && game.state != 'lobby' && game.state != 'invalid') {
     let message = "Insufficient players in game. Setting back to lobby."
     game.chat.push({ date: Date.now(),  message: message });