User can now create a polygon

api/v1/api.js

@@ -1,10 +1,11 @@
 let db = require("../config/db.js");
+let mathFunc = require("./mathFunc.js");
+let util = require("util");
 
 module.exports = {
     getPolygons : function (req, res) {
         if (req.query.gameID != null) {
-            let query = "CALL getPolygonPoints(\"samdum\");";
-            console.log("hi");
+            let query = "CALL getPolygonPoints(\"" + req.query.gameID + "\");";
             db.get().query(query, function(err, rows){
                 if (err) return res.send(400);
                 res.send(rows[0]);
@@ -13,5 +14,56 @@ module.exports = {
         } else {
             res.send(500);
         }
+    },
+    isPolygon: function (req, res) {
+        if (req.body.gameID != null && req.body.userID != null && req.body.points != null) {
+            let gameID = req.body.gameID;
+            let userID = req.body.userID;
+            let points = JSON.parse(req.body.points);
+            console.log(points);
+            if (points.length < 2) {
+                res.send([]);
+            } else {
+                let firstPoint = points[0];
+                let lastPoint = points[points.length - 1];
+                let distance = mathFunc.gpsToMeters(firstPoint.lat, firstPoint.lng, lastPoint.lat, lastPoint.lng);
+                console.log(distance);
+                if (distance < 3) {
+                    //area is just 1 for now we fix later.
+                    query = util.format("CALL insertPolygon(\"%s\", \"%s\", 1)", gameID, userID);
+                    db.get().query(query, function(err, rows) {
+                        if (err) {
+                            console.log(err);
+                            return res.send(400);
+                        }
+
+                        let polygonID = rows[0][0].polygonID;
+                        query = "INSERT INTO polygonPoints (polygonID, lat, lng) VALUES ";
+                        let delimiterNecessary = false;
+
+                        points.map((point) => {
+                            if (delimiterNecessary) {
+                                query += ",";
+                            }
+                            query += util.format("(\"%s\",%s,%s)", polygonID, point.lat, point.lng);
+                            delimiterNecessary = true;
+                        });
+                        query += ";";
+
+                        db.get().query(query, function(err, pointRows) {
+                            if (err) {
+                                console.log(err);
+                                return res.send(400);
+                            }
+                            res.send(rows[0][0]);
+                            return;
+                        });
+                    });
+                } else {
+                    res.send([]);
+                }
+            }
+
+        }
     }
 }

api/v1/mathFunc.js

@@ -0,0 +1,13 @@
+module.exports = {
+    gpsToMeters: function (lat1, lon1, lat2, lon2){  // generally used geo measurement function
+        var R = 6378.137; // Radius of earth in KM
+        var dLat = lat2 * Math.PI / 180 - lat1 * Math.PI / 180;
+        var dLon = lon2 * Math.PI / 180 - lon1 * Math.PI / 180;
+        var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
+        Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) *
+        Math.sin(dLon/2) * Math.sin(dLon/2);
+        var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
+        var d = R * c;
+        return d * 1000; // meters
+    }
+}