add cfs to server

Includes new endpoints for cfs data from mongodb

controllers/cfsController.js

+cfs = require('../models/cfs.js');
+current_year = require('../models/gdd_current.js');
+utils = require('../lib/utils');
+
+function find(collection, query, projection, t_base, res, product) {
+    current_year.find(query).limit(1).then(function(cy) {
+        var min_temps = cy[0]["min_temps"]
+        var max_temps = cy[0]["max_temps"]
+  
+        var gdd_sum_cy = 0;
+        
+        for (var i = 0; i < min_temps.length; i++) {
+            gdd_value = utils.calculate_gdd(min_temps[i], max_temps[i], t_base, product);
+            gdd_sum_cy += gdd_value
+        }
+
+        collection.find(query).limit(200).then(function(data) {
+            // console.log(data);
+            var base_date = data[0]["time"]
+            var lat = data[0]["location"]["coordinates"][1]
+            var lon = data[0]["location"]["coordinates"][0]
+            var gdds = []
+            var i = 0;
+            while (data[i] !== undefined) {
+                if (lat != data[i]["location"]["coordinates"][1] ||
+                lon != data[i]["location"]["coordinates"][0]) {
+                    break;
+                }
+                gdd_value = utils.calculate_gdd(data[i].min_temp, data[i].max_temp, t_base, product);
+                gdd_sum_cy += gdd_value
+                gdds.push(gdd_sum_cy)
+                i += 1
+            }
+            // for (var i = 0; i < 10; i++) {
+            //     
+            // }
+        
+            res.json({
+                message: "CFS GDD",
+                data: gdds,
+                base_date: base_date,
+                closest_lon: data[0]["location"]["coordinates"][0],
+                closest_lat: data[0]["location"]["coordinates"][1]
+            })
+        }, function(err) {
+            res.status(500).send({"internal error": err})
+        })
+
+    }, function(err) {
+        res.status(500).send({"internal error": err})
+    })
+    
+}
+
+
+exports.cfs = function (req, res) {
+    var product = req.params.product;
+
+    var latitude = parseFloat(req.body.latitude)
+    var longitude = parseFloat(req.body.longitude)
+    
+    var query = {
+        location: { 
+            "$near": {
+                "$geometry": {
+                    "type": "Point", 
+                    "coordinates": [longitude, latitude]
+                },
+            },
+        },
+    }
+
+    var projection = {
+        min_temp: 1,
+        max_temp: 1,
+        location: 1,
+    }
+    
+    var t_base = 50
+
+    errors = []
+
+    if (latitude < 24.083334 || latitude > 49.916668) {
+        errors.push({
+            parameter_error: "latitude",
+            message: latitude.toString() + " is out of bounds for GDD calculations. Must be between 24.083334 - 49.916668"
+        });
+    }
+
+    if (req.body.hasOwnProperty("t_base")) {
+        t_base = parseFloat(req.body.t_base);
+    } else {
+        out = utils.product_base_switch(product, errors, t_base);
+        t_base = out.t_base;
+        errors = out.errors;
+    }
+
+    if (longitude < -125 || longitude > -66.5) {
+        errors.push({
+            parameter_error: "longitude",
+            message: longitude.toString() + " is out of bounds for GDD calculations. Must be between -125.0 - -66.5"
+        });
+    }
+
+    if (errors.length > 0) {
+        res.status(400).send({
+            errors: errors
+        })
+    }
+
+    find(cfs, query, projection, t_base, res, product);
+};
\ No newline at end of file