Dingle/functions.js at master · Vmlweb/Dingle · GitHub

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var fs = require('fs');
var wrench = require('wrench');
var path = require('path');
var async = require('async');
var replace = require("replaceall");
var val = require('validator');

module.exports = function (config) {
    var module = {};

	//Loop files
	wrench.readdirSyncRecursive(config.path.functions).forEach(function (file){
		file = path.join(config.path.functions,file);

		//Check extension
		if (!val.equals(path.extname(file),'.js')){
			return;
		}

		//Construct
		var call = require(file);
		call.path = file;

		//Construct name
		call.name = replace(config.path.functions,'',file);
		call.name = replace(path.extname(call.name),'',call.name);
		call.name = replace('/','_',call.name);
		if (call.name.charAt(0) == '_'){
			call.name = call.name.substring(1);
		}

		//Blanks
		if (!call.hasOwnProperty('brief')){ call.brief = 'No Brief'; }
		if (!call.hasOwnProperty('description')){ call.description = 'No Description'; }
		if (!call.hasOwnProperty('methods')){ call.methods = [] }
		if (!call.hasOwnProperty('params')){ call.params = {} }
		if (!call.hasOwnProperty('execute')){
			call.execute = [];
			call.execute[0] = function(response, params, info, next){ next('Could not find execution function', response, params, info); }
		}

		//Param Blanks
		for (param in call.params){
			if (!call.params[param].hasOwnProperty('description')){ call.params[param].description = 'No Description'; }
			if (!call.params[param].hasOwnProperty('required')){ call.params[param].required = true; }
			if (!call.params[param].hasOwnProperty('validator')){ call.params[param].validator = function(object){ return object.toString(); } }
			if (!call.params[param].hasOwnProperty('description')){ call.params[param].description = 'No Description'; }
		}

		//Run Function
		call.run = function(params, callback, add){
			try{

				//Check required & validation
				var valid_params = {};
				for (param in call.params){

					//Required
					if (!params.hasOwnProperty(param)){
						if (call.params[param].required){
							throw "Please enter a " + replace('_',' ',param);
						}else{
							valid_params[param] = null;
							continue;
						}
					}

					//Validate
					valid_params[param] = call.params[param].validator(params[param], 'Please enter a valid ' + replace('_',' ',param));
				}

				//Construct info
				var add = add || {};
				var info = {};
				info.temp = {};

				//Populate info
				info.functions = module;
				if (add.hasOwnProperty('remoteAddress')){
					info.address = add.remoteAddress;
					info.tcp = add;
				}else if (add.hasOwnProperty('address')){
					info.address = add.address;
					info.udp = add;
				}else if (add.hasOwnProperty('connection')){
					info.address = add.connection.remoteAddress;
					info.express = add;
				}else if (add != {}){
					info.other = add;
				}

				//Execute
				var execution = [function(next){ next(null, {message: 'Successful', output: {}}, valid_params, info); }]
				async.waterfall(execution.concat(call.execute), function (error, response) {
					if (error){
						callback(false, error, response.output, response.download);
					}else{
						callback(true, response.message, response.output, response.download);
					}
				});

			}catch(error){
				callback(false, error, {});
			}
		}

		module[call.name] = call;
	});

    return module;
};