feat: Adding states endpoint and regex find to current endpoints

sections/states/routes.js

@@ -0,0 +1,9 @@
+'use strict';
+const router = require('express').Router();
+const services= require('./services.js');
+
+router.get('/', services.getStatesList);
+router.get('/find', services.findStatesList);
+router.get('/:id', services.getState);
+
+module.exports = router;

sections/states/services.js

@@ -0,0 +1,28 @@
+"use strict";
+const { ROOT_PATH, LIB_PATH, MODELS_PATH, HANDLERS_PATH } = process.env;
+const { getPagination , queryPage } = require( `${ROOT_PATH}/${LIB_PATH}/Misc.js` );
+const Model = require( `${ROOT_PATH}/${MODELS_PATH}/states.model.js` );
+
+const getStatesList = async(req, res) => {
+    const { page , elements } = getPagination( req.query );
+    const retVal = await queryPage( page , elements, Model );
+    res.send( retVal );
+};
+
+const findStatesList = async(req, res) => {
+    let filter=null;
+    if( req.query.regex ){
+        const re = new RegExp( req.query.regex );
+        filter = { "state_name" : { $regex: re, $options: 'i' }};
+    }
+    const { page , elements } = getPagination( req.query );
+    const retVal = await queryPage( page, elements, Model, filter );
+    res.send( retVal );
+};
+
+const getState = async(req, res) => {
+    const retVal = await Model.findById( req.params.id );
+    res.send( retVal );
+};
+
+module.exports = { getStatesList, findStatesList, getState };