User search and creation

scripts/API.JS

@@ -1,9 +1,88 @@
+const bodyParser = require(`body-parser`);
+
+const CustomErrors = require(`./utilities/errors.JS`);
+const Messaging = require(`./utilities/messaging.JS`);
+
 class DBManagement {};
 DBManagement.Activities = require(`./database/management/management_activity.JS`);
 DBManagement.Users = require(`./database/management/management_user.JS`);
 
+class ResponseGenerator {};
+ResponseGenerator.Activities = require(`./response/activity.JS`);
+ResponseGenerator.Users = require(`./response/user.JS`);
+ResponseGenerator.Log = require(`./response/log.JS`);
+
 class ExerciseTrackerAPI {
-	constructor() {
+	#paths = {
+		"users": ["users"],
+		"exercises": ["users/:_id/exercises"],
+		"logs": ["users/:_id/logs"]
+	}
+
+	constructor(INSTANCE) {
+		this[`instance`] = INSTANCE;
+		this[`instance`].use(bodyParser.json());
+		this[`instance`].use(bodyParser.urlencoded({extended: true}));
+
+		const init_management = () => {
+			this[`management`] = {};
+
+			Object.keys(DBManagement).forEach((DATABASE) => {
+				this.management[DATABASE] = new DBManagement[DATABASE]();
+			});
+			this.manageUsers();
+		};
+
+		init_management();
+	}
+
+	/*
+		Manage the users. 
+	*/
+	manageUsers () {
+		/* 
+			Create new users.
+		*/
+		const users_creation = async (REQUEST, RESPONSE) => {
+			try {
+				if (((REQUEST.body) ? Object.keys(REQUEST.body).length : false) ? Object.keys(REQUEST.body).includes(`username`) : false) {
+					this.management[`Users`].create(REQUEST.body[`username`]).then((RESULT) => {
+						let FORMATTED = (new ResponseGenerator.Users(RESULT)).format();
+						RESPONSE.send(FORMATTED);	
+					})
+				} else {
+					throw new CustomErrors.Data.Missing(REQUEST.body);
+				}
+			} catch(ERR) {
+				Messaging.exception(RESPONSE, ERR);
+			}
+		}
+		
+		/*
+			Search for all users. 
+		*/
+		const users_display = (REQUEST, RESPONSE) => {
+			try {
+				let CRITERIA = (((REQUEST.query) ? Object.keys(REQUEST.query).length : false) || ((REQUEST.body) ? Object.keys(REQUEST.body).length : false)) ? (((REQUEST.body) ? Object.keys(REQUEST.body).length : false) ? REQUEST.body : REQUEST.query) : {};
+				
+				this.management[`Users`].search(CRITERIA).then((RESULT) => {
+					let FORMATTED = (new ResponseGenerator.Users(RESULT)).format();
+					RESPONSE.send(FORMATTED);
+				})
+			} catch(ERR) {
+				Messaging.exception(RESPONSE, ERR);
+			}
+		}
+
+		this.#paths[`users`].forEach((PATH) => {
+			this[`instance`].get(`/api/${PATH}`, users_display)
+			console.log(`User search is ready on ${PATH}.`);
+		});
+
+		this.#paths[`users`].forEach((PATH) => {
+			this[`instance`].post(`/api/${PATH}`, users_creation)
+			console.log(`User creation is ready on ${PATH}.`);
+		});
 	}
 }