Merge pull request #9 from gzileni/develop

Develop

Author: gzileni

README.md

@@ -37,15 +37,15 @@ const bbox = [
  * highway -> all roads
  * landuse=industrial
  * */
-const queries = ['military=airfield', 'highway', 'landuse=industrial']
-/** Calculates a buffer for input features for a given radius. */
-const buffer = 0.5
-/** Units supported are miles, kilometers (default), and degrees. */
-const units = 'kilometers'
+const params = {
+  queries: ['military=airfield', 'highway', 'landuse=industrial'],
+  buffer: 0.5,          // Calculates a buffer for input features for a given radius.
+  units: 'kilometers',  // Units supported are miles, kilometers (default), and degrees.
+  endpoint: 'https://overpass-api.de/api/interpreter'  // DEFAULT: https://overpass-api.de/api/interpreter
+}
 /** GeoJSON results */
-const response = fastify.osm(bbox, queries, buffer, units)
+const response = fastify.osm(params)
 console.log(JSON.stringify(response));
-
 fastify.listen(3000)
 ```
 

index.js

@@ -3,23 +3,23 @@
 const queryOverpass = require('@derhuerst/query-overpass')
 const osmtogeojson = require('osmtogeojson')
 const turf = require('@turf/turf')
-
 const fp = require('fastify-plugin')
 
 module.exports = fp(async function (fastify, opts) {
-  fastify.decorate('osm', async (bbox, queries, buffer, unit) => {
-    const u = unit !== null && unit !== undefined ? unit : 'kilometers'
+  fastify.decorate('osm', async (params) => {
+    const endpoint = params.endpoint ? params.endpoint : 'https://overpass-api.de/api/interpreter';
+    const u = params.unit !== null && params.unit !== undefined ? params.unit : 'kilometers'
     /** invert lat/lon */
-    const bboxInverted = [bbox[1], bbox[0], bbox[3], bbox[2]]
+    const bboxInverted = [params.bbox[1], params.bbox[0], params.bbox[3], params.bbox[2]]
     const bb = bboxInverted.join(',')
     let q = '[out:json][timeout:25];('
-    queries.forEach(c => (q += `node[${c}](${bb}); way[${c}](${bb}); relation[${c}](${bb});`))
+    params.queries.forEach(c => (q += `node[${c}](${bb}); way[${c}](${bb}); relation[${c}](${bb});`))
     q += ');out body; >; out skel qt;'
     const resultOsmGeojson = osmtogeojson({
-      elements: await queryOverpass(q)
+      elements: await queryOverpass(q, { endpoint: endpoint })
     })
     if (buffer !== null && buffer !== undefined) {
-      const resultOsmGeojsonBuffered = turf.buffer(resultOsmGeojson, buffer, { units: u })
+      const resultOsmGeojsonBuffered = turf.buffer(resultOsmGeojson, params.buffer, { units: u })
       return resultOsmGeojsonBuffered
     } else {
       return resultOsmGeojson

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fastify-osm",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Plugin for Fastify to perform queries on OpenStreetMap",
   "main": "index.js",
   "repository": {