X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=lmno.js;h=60c0f44000dfa702ec04c4b9cddbbb6d9600a40f;hb=0cc61b68f175ae13fe2390d8e5c6bf374153aecc;hp=ff66a9bda71579c180123bbd7dfabbff50836407;hpb=d9ad319ff41cae1c0a9d2a771941be25c1208e3d;p=empires-server

diff --git a/lmno.js b/lmno.js
index ff66a9b..60c0f44 100644
--- a/lmno.js
+++ b/lmno.js
@@ -46,32 +46,63 @@ nunjucks.configure("templates", {
   express: app
 });
 
-/* Load each of our game mini-apps. */
-var empires = require("./empires");
+/* Load each of our game mini-apps.
+ *
+ * Each "engine" we load here must have a property .Game on the
+ * exports object that should be a class that extends the common base
+ * class Game.
+ *
+ * In turn, each engine's Game must have the following properties:
+ *
+ *     .meta:   An object with .name and .identifier properties.
+ *
+ *              Here, .name is a string giving a human-readable name
+ *              for the game, such as "Tic Tac Toe" while .identifier
+ *              is the short, single-word, all-lowercase identifier
+ *              that is used in the path of the URL, such as
+ *              "tictactoe".
+ *
+ *     .router: An express Router object
+ *
+ *              Any game-specific routes should already be on the
+ *              router. Then, LMNO will add common routes including:
+ *
+ *                 /        Serves <identifier>-game.html template
+ *
+ *                 /events  Serves a stream of events. Game can override
+ *                          the handle_events method, call super() first,
+ *                          and then have code to add custom events.
+ *
+ *                 /moves   Receives move data from clients. This route
+ *                          is only added if the Game class has an
+ *                          add_move method.
+ */
+const engines = {
+  empires: require("./empires").Game,
+  tictactoe: require("./tictactoe").Game
+};
 
 class LMNO {
   constructor() {
-    this.ids = {};
+    this.games = {};
   }
 
   generate_id() {
-    return [null,null,null,null].map(() => LMNO.letters.charAt(Math.floor(Math.random() * LMNO.letters.length))).join('');
+    return Array(4).fill(null).map(() => LMNO.letters.charAt(Math.floor(Math.random() * LMNO.letters.length))).join('');
   }
 
-  create_game(engine) {
+  create_game(engine_name) {
     do {
       var id = this.generate_id();
-    } while (id in this.ids);
+    } while (id in this.games);
+
+    const engine = engines[engine_name];
 
-    const game = new empires.Game();
+    const game = new engine(id);
 
-    this.ids[id] = {
-	id: id,
-	engine: engine,
-	game: game
-    };
+    this.games[id] = game;
 
-    return id;
+    return game;
   }
 }
 
@@ -107,8 +138,8 @@ function lmno_canonize(id) {
 
 app.post('/new/:game_engine', (request, response) =>  {
   const game_engine = request.params.game_engine;
-  const game_id = lmno.create_game(game_engine);
-  response.send(JSON.stringify(game_id));
+  const game = lmno.create_game(game_engine);
+  response.send(JSON.stringify(game.id));
 });
 
 /* Redirect any requests to a game ID at the top-level.
@@ -127,36 +158,42 @@ app.get('/[a-zA-Z0-9]{4}', (request, response) => {
     return;
   }
 
-  const game = lmno.ids[game_id];
+  const game = lmno.games[game_id];
   if (game === undefined) {
       response.sendStatus(404);
       return;
   }
-  response.redirect(301, `/${game.engine}/${game.id}/`);
+  response.redirect(301, `/${game.meta.identifier}/${game.id}/`);
 });
 
 /* LMNO middleware to lookup the game. */
-app.use('/empires/:game_id([a-zA-Z0-9]{4})', (request, response, next) => {
+app.use('/:engine([^/]+)/:game_id([a-zA-Z0-9]{4})', (request, response, next) => {
+  const engine = request.params.engine;
   const game_id = request.params.game_id;
   const canon_id = lmno_canonize(game_id);
 
-  /* Redirect user to page with the canonical ID in it. */
-  if (game_id !== canon_id) {
-    const new_url = request.originalUrl.replace("/empires/" + game_id,
-                                                "/empires/" + canon_id);
+  /* Redirect user to page with the canonical ID in it, also ensuring
+   * that the game ID is _always_ followed by a slash. */
+  const has_slash = new RegExp(`^/${engine}/${game_id}/`);
+  if (game_id !== canon_id ||
+      ! has_slash.test(request.originalUrl))
+  {
+    const old_path = new RegExp(`/${engine}/${game_id}/?`);
+    const new_path = `/${engine}/${canon_id}/`;
+    const new_url = request.originalUrl.replace(old_path, new_path);
     response.redirect(301, new_url);
     return;
   }
 
   /* See if there is any game with this ID. */
-  const game = lmno.ids[game_id];
+  const game = lmno.games[game_id];
   if (game === undefined) {
     response.sendStatus(404);
     return;
   }
 
   /* Stash the game onto the request to be used by the game-specific code. */
-  request.game = game.game;
+  request.game = game;
   next();
 });
 
@@ -180,6 +217,7 @@ function auth_admin(request, response, next) {
 
 app.get('/logout', (request, response) => {
   request.session.user = undefined;
+  request.session.destroy();
 
   response.send("You are now logged out.");
 });
@@ -211,24 +249,75 @@ app.post('/login', async (request, response) => {
   return;
 });
 
-/* A stats page (only available to admin users) */
-app.get('/stats/', auth_admin, (request, response) => {
-  let active = 0;
-  let idle = 0;
+/* API to set uer profile information */
+app.put('/profile', (request, response) => {
+  const nickname = request.body.nickname;
+  if (nickname) {
+    request.session.nickname = nickname;
+    request.session.save();
+  }
+  response.send();
+});
+
+/* An admin page (only available to admin users, of course) */
+app.get('/admin/', auth_admin, (request, response) => {
+  let active = [];
+  let idle = [];
 
-  for (let id in lmno.ids) {
-    if (lmno.ids[id].game.clients.length)
-      active++;
-   else
-      idle++;
+  for (let id in lmno.games) {
+    if (lmno.games[id].clients.length)
+      active.push(lmno.games[id]);
+    else
+      idle.push(lmno.games[id]);
   }
-  response.send(`<html><body>Active games: ${active}.<br>
-Idle games: ${idle}</body></html>`);
+  response.render('admin.html', { test: "foobar", games: { active: active, idle: idle}});
 });
 
 
 /* Mount sub apps. only _after_ we have done all the middleware we need. */
-app.use('/empires/[a-zA-Z0-9]{4}/', empires.app);
+for (let key in engines) {
+  const engine = engines[key];
+  const router = engine.router;
+
+  /* Add routes that are common to all games. */
+  router.get('/', (request, response) => {
+    const game = request.game;
+
+    if (! request.session.nickname)
+      response.render('choose-nickname.html', { game_name: game.meta.name });
+    else
+      response.render(`${game.meta.identifier}-game.html`);
+  });
+
+  router.get('/events', (request, response) => {
+    const game = request.game;
+
+    game.handle_events(request, response);
+  });
+
+  /* Further, add some routes conditionally depending on whether the
+   * engine provides specific, necessary methods for the routes. */
+  if (engine.prototype.add_move) {
+    router.post('/move', (request, response) => {
+      const game = request.game;
+      const move = request.body.move;
+
+      const legal = game.add_move(move);
+
+      /* Inform this client whether the move was legal. */
+      response.send(JSON.stringify(legal));
+
+      /* And only if legal, inform all clients. */
+      if (! legal)
+        return;
+
+      game.broadcast_move(move);
+    });
+  }
+
+  /* And mount the whole router at the path for the game. */
+  app.use(`/${engine.meta.identifier}/[a-zA-Z0-9]{4}/`, router);
+}
 
 app.listen(4000, function () {
   console.log('LMNO server listening on localhost:4000');