Prepare charts moved from api server to here

route/api.js
   - new distriputer fpr chart preparation

appp.js
   - removed unnecessary calls

public/javascripts/map.js
   - changed /char/... call to /api/... call

charts/preparecharts
   - added

charts/utilities.js
   - added

public/javascripts/showcharts.js
   - changed /char/... call to /api/... call

routes/users.js
   - deleted

routes/api.js

@@ -1,10 +1,20 @@
 import express from 'express'
 import pkg from  '../package.json' assert { type: "json" }
 import axios from 'axios'
+import * as prep from '../charts/preparecharts.js'
 
 const router = express.Router()
 const { name, version, date } = pkg
 
+const disttable = [
+  {type: 'live', func: prep.liveData },
+  {type: 'havg', func: prep.havgData },
+  {type: 'davg', func: prep.davgData },
+  {type: 'daynight', func: prep.dayNightData },
+  {type: 'lden', func: prep.ldenData },
+  {type: 'map', func: prep.mapData },
+]
+
 let APIHOST = process.env.APIHOST || 'http://localhost:3004'
 
 /* GET home page. */
@@ -22,7 +32,14 @@ router.get('/:cmd', async function(req, res, next) {
     if (response.status !== 200) {
       res.json({err: `Error from servercall: status = ${response.status}`})
     }
-    res.json(response.data)
+    const options = response.data.options
+    for(let x of disttable) {
+      if (x.type === options.data) {
+        let ret = x.func(options, response.data.values)
+        res.json(ret)
+        break;
+      }
+    }
   } catch (e) {
     res.json({err: `Error from servercall: ${e}`})
   }

routes/users.js

@@ -1,9 +0,0 @@
-var express = require('express');
-var router = express.Router();
-
-/* GET users listing. */
-router.get('/', function(req, res, next) {
-  res.send('respond with a resource');
-});
-
-module.exports = router;