dbot/modules/api/api.js

/**
 * 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);
};