Initial API module [#361]

modules/api/api.js

@@ -0,0 +1,50 @@
+/**
+ * Name: API
+ * Description: Expose DBot API functionality with a REST API
+ */
+var _ = require('underscore')._;
+
+var api = function(dbot) {
+    this.onLoad = function() {
+        dbot.modules.web.app.get('/api/:module/:method', function(req, res) {
+            var module = req.params.module,
+                method = req.params.method,
+                body = { 'err': null, 'data': null };
+
+                if(!_.has(dbot.api, module)) {
+                    body.err = 'No such API module';
+                } else if(!_.has(dbot.api[module], method)) {
+                    body.err = 'No such API function in ' + module;
+                } else if(dbot.api[module][method].external !== true) {
+                    body.err = 'API function ' + module + '.' + method + 
+                        ' not enabled for external access';
+                }
+                
+                if(!body.err) {
+                    var func = dbot.api[module][method];
+                    var paramNames = func.extMap;
+                    var args = [];
+                    
+                    // TODO: Use request params to map to extMap args
+
+                    var callbackIndex = paramNames.indexOf('callback');
+                    if(callbackIndex != -1) {
+                        args[callbackIndex] = function() {
+                            body.data = Array.prototype.slice.call(arguments, 0);
+                            res.json(body);
+                        };
+                        func.apply(null, args);
+                    } else {
+                        body.data = func.call(null, args);
+                        res.json(body);
+                    }
+                } else {
+                    res.json(body);
+                }
+        }.bind(this));
+    }.bind(this);
+};
+
+exports.fetch = function(dbot) {
+    return new api(dbot);
+};

modules/imgur/imgur.js

@@ -67,6 +67,8 @@ var imgur = function(dbot) {
             });
         }
     };
+    this.api['getRandomImage'].external = true;
+    this.api['getRandomImage'].extMap = [ 'callback' ];
 
     this.commands = {
         '~ri': function(event) {

modules/web/web.js

@@ -3,17 +3,17 @@ var express = require('express'),
     fs = require('fs');
 
 var webInterface = function(dbot) {
-    var pub = 'public';
+    this.pub = 'public';
-    var app = express();
+    this.app = express();
 
-    app.use(express.static(pub));
+    this.app.use(express.static(this.pub));
-    app.set('view engine', 'jade');
+    this.app.set('view engine', 'jade');
 
-    app.get('/', function(req, res) {
+    this.app.get('/', function(req, res) {
         res.render('index', { 'name': dbot.config.name });
     });
    
-    var server = app.listen(dbot.config.web.webPort);
+    var server = this.app.listen(dbot.config.web.webPort);
 
     this.reloadPages = function() {
         var pages = dbot.pages;
@@ -21,7 +21,7 @@ var webInterface = function(dbot) {
             if(_.has(pages, p)) {
                 var func = pages[p];
                 var mod = func.module;
-                app.get(p, (function(req, resp) {
+                this.app.get(p, (function(req, resp) {
                     // Crazy shim to seperate module views.
                     var shim = Object.create(resp);
                     shim.render = (function(view, one, two) {