From 512f5b4fceab491f894987d61c3bc63c051d7a00 Mon Sep 17 00:00:00 2001
From: Jorge Mendez Ortega <jorge.mendez.ortega@gmail.com>
Date: Wed, 24 Jun 2020 20:20:10 -0500
Subject: [PATCH] =?UTF-8?q?=E2=9E=95ADD:=20Listado=20de=20Modelos?=
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Se genera el listado de modelos disponibles dentro de la api

Issue # 6
---
 app/config/env-config.js |  1 +
 app/src/server/index.js  |  6 +++-
 app/src/tools/Helpers.js | 63 ++++++++++++++++++++++++++--------------
 3 files changed, 48 insertions(+), 22 deletions(-)

diff --git a/app/config/env-config.js b/app/config/env-config.js
index 60a72a0..5fda7ac 100644
--- a/app/config/env-config.js
+++ b/app/config/env-config.js
@@ -8,6 +8,7 @@ module.exports = {
     "process.env.APP_PORT": APP_PORT,
     "process.env.ODBC": `mongodb+srv://${USER_DB}:${PASS}@cluster0-eke4y.mongodb.net/${DB}?retryWrites=true&w=majority`,
     "process.env.HOST": HOST,
+    "process.env.README": "https://github.com/OrcaPracticas/workshop-mongo/blob/develop/README.md",
     "process.env.CONFIG": {
         useNewUrlParser: true,
         useUnifiedTopology: true,
diff --git a/app/src/server/index.js b/app/src/server/index.js
index 0fa0c2f..701df39 100644
--- a/app/src/server/index.js
+++ b/app/src/server/index.js
@@ -12,7 +12,10 @@ import ApiRouter from "./router";
 // ======================== CONSTANTES ======================== //
 
 const PORT = process.env.APP_PORT;
+const HOST_APP = process.env.HOST;
+const README_APP = process.env.README;
 const ROOT_PATH = Path.join(__dirname, "../../");
+const PATH = `${ROOT_PATH}src/models`;
 const Helpers = Tools.instance;
 const Server = Express();
 
@@ -57,9 +60,10 @@ Server.use(ApiRouter(Router, Helpers));
 Server.use("/", (request, response) => {
     const { path = "" } = request;
     if (path === "/") {
+        const LIST_MODELS = Helpers.listModels(PATH, HOST_APP, README_APP);
         Helpers.messages("Solicitud recibida", "s");
         response.status(200);
-        response.send("<h1>API</h1>");
+        response.json(LIST_MODELS);
     } else {
         Helpers.error(response, `Ruta no encontrada ${path}`, "Not found");
     }
diff --git a/app/src/tools/Helpers.js b/app/src/tools/Helpers.js
index 57c7fa6..c37fb29 100644
--- a/app/src/tools/Helpers.js
+++ b/app/src/tools/Helpers.js
@@ -1,31 +1,11 @@
 import Colors from "cli-color";
+import { readdirSync } from "fs";
 
 /* eslint-disable class-methods-use-this */
 class Helper {
     // Propiedad privada
     static #instanceClass = null;
 
-    /**
-     * Permite conseguir los parametros que son enviados a las consultas.
-     *
-     * @param {Express} request Objeto referen te a expess.
-     *
-     * @returns {void}.
-     */
-    prepareSetting(request) {
-        const { body = {}, params } = request;
-        const { field = "" } = params;
-        params.field = (/_?id/.test(field)) ? "_id" : field;
-        if (params.Model === "pokemon" && !body.img) {
-            const { name = "default" } = body;
-            const IMG = this.formatString(name);
-            body.img = `${process.env.HOST}/pokemons/${IMG}.jpg`;
-        }
-        const setting = { body, Model: params.Model };
-        delete params.Model;
-        return { setting, ...params };
-    }
-
     /**
      * Permite manejar el error 404
      *
@@ -101,6 +81,26 @@ class Helper {
         response.setHeader("Cache-Control", `max-age=${ttl}`);
     }
 
+    /**
+     * Permite listar los modelos referentes a las colecciones disponibles.
+     *
+     * @param {String} path Ruta de donde se pueden cargar los modelos.
+     * @param {String} host Url del host donde se esta probando.
+     *
+     * @return {Object}.
+     */
+    listModels(path, host, readme) {
+        const CONTENT = readdirSync(path);
+        const models = CONTENT.reduce((list, file) => {
+            if (file !== "index.js") {
+                const MODEL = file.replace(/\..*/g, "");
+                list[MODEL] = `${host}/${MODEL}/all`;
+            }
+            return list;
+        }, {});
+        return { readme, models };
+    }
+
     /**
      * Permite el envio de mensajes
      *
@@ -148,6 +148,27 @@ class Helper {
         console.log(log(` [${msg}] => ${auxText}`)); // eslint-disable-line
     }
 
+    /**
+     * Permite conseguir los parametros que son enviados a las consultas.
+     *
+     * @param {Express} request Objeto referen te a expess.
+     *
+     * @returns {void}.
+     */
+    prepareSetting(request) {
+        const { body = {}, params } = request;
+        const { field = "" } = params;
+        params.field = (/_?id/.test(field)) ? "_id" : field;
+        if (params.Model === "pokemon" && !body.img) {
+            const { name = "default" } = body;
+            const IMG = this.formatString(name);
+            body.img = `${process.env.HOST}/pokemons/${IMG}.jpg`;
+        }
+        const setting = { body, Model: params.Model };
+        delete params.Model;
+        return { setting, ...params };
+    }
+
     /**
      * Permite conseguir una instancia de la clase.
      *