Fix incorrect TileSize in index.json and data.json data urls. Add Til…

…eSize option to index.json and rendered.json endpoints for rendered urls. (#1160)

* fix: tilesize should not be added to data endpoint

* fix: make tilesize and option of addtilejson urls

* docs: update tilesize info for index.json and rendered.json

* fix: lint

docs/endpoints.rst

@@ -102,7 +102,9 @@ Source data
 
 TileJSON arrays
 ===============
-Array of all TileJSONs is at ``/index.json`` (``/rendered.json``; ``/data.json``)
+Array of all TileJSONs is at ``[/{tileSize}]/index.json`` (``[/{tileSize}]/rendered.json``; ``/data.json``)
+
+  * The optional tile size ``/{tileSize}`` (ex. ``/256``, ``/512``). if omitted, tileSize defaults to 256.
 
 List of available fonts
 =======================

src/server.js

@@ -354,9 +354,8 @@ function start(opts) {
     res.send(result);
   });
 
-  const addTileJSONs = (arr, req, type) => {
+  const addTileJSONs = (arr, req, type, tileSize) => {
     for (const id of Object.keys(serving[type])) {
-      const tileSize = 256;
       const info = clone(serving[type][id].tileJSON);
       let path = '';
       if (type === 'rendered') {
@@ -380,14 +379,23 @@ function start(opts) {
     return arr;
   };
 
-  app.get('/rendered.json', (req, res, next) => {
-    res.send(addTileJSONs([], req, 'rendered'));
+  app.get('/(:tileSize(256|512)/)?rendered.json', (req, res, next) => {
+    const tileSize = parseInt(req.params.tileSize, 10) || 256;
+    res.send(addTileJSONs([], req, 'rendered', tileSize));
   });
   app.get('/data.json', (req, res, next) => {
-    res.send(addTileJSONs([], req, 'data'));
+    res.send(addTileJSONs([], req, 'data', undefined));
   });
-  app.get('/index.json', (req, res, next) => {
-    res.send(addTileJSONs(addTileJSONs([], req, 'rendered'), req, 'data'));
+  app.get('/(:tileSize(256|512)/)?index.json', (req, res, next) => {
+    const tileSize = parseInt(req.params.tileSize, 10) || 256;
+    res.send(
+      addTileJSONs(
+        addTileJSONs([], req, 'rendered', tileSize),
+        req,
+        'data',
+        undefined,
+      ),
+    );
   });
 
   // ------------------------------------