1 files changed, 79 insertions, 0 deletions
diff --git a/static/js/map.js b/static/js/map.js
new file mode 100644
index 0000000..a197fdb
--- /dev/null
+++ b/static/js/map.js
@@ -0,0 +1,79 @@
+var map;
+InitializeMap({
+    city: "Buffalo",
+    latitude: 42.8864,
+    longitude: -78.8784
+});
+
+function InitializeMap(city) {
+    map = L.map('map').setView([city.latitude, city.longitude], 12);
+    displayMap(map, city);
+}
+
+function reRenderMap(city) {
+    map.remove();
+    map = L.map('map').setView([city.latitude, city.longitude], 12);
+    displayMap(map, city);
+}
+
+function displayMap(map, city) {
+    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
+        accessToken: 'pk.eyJ1IjoibHVjaWZlcmNyIiwiYSI6ImNrNGx0amIzejJkaHIzZm8yODB2dGx2cXYifQ.sopB-tKzpX_qXc30bv_puQ'
+    }).addTo(map);
+    getBoundaries(city.city).then(function (bd) {
+        var lines = [];
+        for (var element of bd) {
+            const extractedBoundary = {
+                type: 'Feature',
+                properties: {
+                    name: city.city
+                },
+                geometry: {
+                    type: element.gs_type,
+                    coordinates: element.boundaries.coordinates
+                }
+            }
+            lines.push(extractedBoundary);
+        }
+
+        var geoJSON = {
+            type: 'FeatureCollection',
+            features: lines
+        };
+
+        var gs = L.geoJSON(geoJSON).addTo(map);
+        try {
+            map.fitBounds(gs.getBounds());
+        } catch (e) {
+            L.marker([city.latitude, city.longitude]).addTo(map)
+                .bindPopup(city.city)
+                .openPopup();
+        }
+    })
+}
+
+function getBoundaries(city) {
+    geojson = [];
+
+    return fetch(`https://nominatim.openstreetmap.org/search.php?q=${city}&polygon_geojson=1&format=jsonv2`).then(function (response) {
+        return response.json();
+    }).then(function (data) {
+        counter = 0;
+
+        for (var el of data) {
+            if (el.type === "administrative") {
+                geojson.push({ boundaries: el.geojson, name: el.display_name, gs_type: el.geojson.type });
+                counter += 1;
+            }
+
+            if (counter === 1 && !el.display_name.includes("Rural")) {
+                break;
+            } else if (counter === 2 && el.display_name.includes("Rural")) {
+                break;
+            }
+        }
+        return geojson;
+    }).catch(function () {
+        return false;
+    });
+}
+\ No newline at end of file