Landsat api request

wri · Jul 19, 2017 · 7934971 · 7934971
1 parent 8fda5a2
commit 7934971
Show file tree

Hide file tree

Showing 2 changed files with 85 additions and 2 deletions.
diff --git a/app/assets/javascripts/map/templates/tabs/basemaps.handlebars b/app/assets/javascripts/map/templates/tabs/basemaps.handlebars
@@ -22,17 +22,18 @@
       <li class="maptype landsat2004" data-maptype="landsat2004">Landsat 2004</li>
       <li class="maptype landsat2005" data-maptype="landsat2005">Landsat 2005</li>
       <li class="maptype landsat2006" data-maptype="landsat2006">Landsat 2006</li>
+      <li class="maptype landsat2007" data-maptype="landsat2007">Landsat 2007</li>
     </div>
     <div>
-      <li class="maptype landsat2007" data-maptype="landsat2007">Landsat 2007</li>
       <li class="maptype landsat2008" data-maptype="landsat2008">Landsat 2008</li>
       <li class="maptype landsat2009" data-maptype="landsat2009">Landsat 2009</li>
       <li class="maptype landsat2010" data-maptype="landsat2010">Landsat 2010</li>
       <li class="maptype landsat2011" data-maptype="landsat2011">Landsat 2011</li>
       <li class="maptype landsat2012" data-maptype="landsat2012">Landsat 2012</li>
       <li class="maptype landsat2013" data-maptype="landsat2013">Landsat 2013</li>
       <li class="maptype landsat2014" data-maptype="landsat2014">Landsat 2014</li>
-      <li class="maptype landsat2014" data-maptype="landsat2015">Landsat 2015</li>
+      <li class="maptype landsat2015" data-maptype="landsat2015">Landsat 2015</li>
+      <li class="maptype landsat2016" data-maptype="landsat2016">Landsat 2016</li>
     </div>
   </ul>
 

diff --git a/app/assets/javascripts/services/LandsatService.js b/app/assets/javascripts/services/LandsatService.js
@@ -0,0 +1,82 @@
+define([
+  'Class',
+  'uri',
+  'bluebird',
+  'map/services/DataService'
+], function(Class, UriTemplate, Promise, ds) {
+
+  'use strict';
+
+  var GET_REQUEST_LANDSAT_TILES_ID = 'LandsatService:getTiles';
+
+  var APIURL = window.gfw.config.GFW_API_HOST_PROD;
+
+  var APIURLS = {
+    'getTiles': '/landsat-tiles/{year}'
+  };
+
+  var LandsatService = Class.extend({
+    init: function() {
+      this.currentRequest = [];
+    },
+
+    getTiles: function(year) {
+      return new Promise(function(resolve, reject) {
+        var url = new UriTemplate(APIURLS.getTiles).fillFromObject({
+          year: year
+        });
+
+        this.defineRequest(GET_REQUEST_LANDSAT_TILES_ID,
+          url, { type: 'persist', duration: 1, unit: 'days' });
+
+        var requestConfig = {
+          resourceId: GET_REQUEST_LANDSAT_TILES_ID,
+          success: function(res, status) {
+            resolve(res.data, status);
+          },
+          error: function(errors) {
+            reject(errors);
+          }
+        };
+
+        this.abortRequest(GET_REQUEST_LANDSAT_TILES_ID);
+        this.currentRequest[GET_REQUEST_LANDSAT_TILES_ID] = ds.request(requestConfig);
+      }.bind(this));
+    },
+
+    defineRequest: function (id, url, cache) {
+      ds.define(id, {
+        cache: cache,
+        url: APIURL + url,
+        type: 'GET',
+        dataType: 'json',
+        contentType: 'application/json; charset=utf-8',
+        decoder: function ( data, status, xhr, success, error ) {
+          if ( status === "success" ) {
+            success( data, xhr );
+          } else if ( status === "fail" || status === "error" ) {
+            error( JSON.parse(xhr.responseText) );
+          } else if ( status === "abort") {
+
+          } else {
+            error( JSON.parse(xhr.responseText) );
+          }
+        }
+      });
+    },
+
+    /**
+     * Abort the current request if it exists.
+     */
+    abortRequest: function(request) {
+      if (this.currentRequest && this.currentRequest[request]) {
+        this.currentRequest[request].abort();
+        this.currentRequest[request] = null;
+      }
+    }
+
+  });
+
+  return new LandsatService();
+
+});