fix(server): indexing local tiffs should not crash (#2152)

packages/server/README.md

@@ -7,7 +7,7 @@ This wraps the @basemaps/lambda-tiler into a standalone express http server.
 ## Usage
 
 ```
-./basemaps-server path/to/config
+basemaps-server --config path/to/config
 ```
 
 Usage with basemaps config, you will need access to basemaps' imagery cache 
@@ -16,5 +16,20 @@ please contact basemaps@linz.govt.nz if you need access.
 ```
 git clone github.com/linz/basemaps-config
 
-./basemaps-server basemaps-config/config
-```
+basemaps-server --config basemaps-config/config
+```
+
+
+### Direct TIFF access
+
+If you have a folder of tiffs the basemaps-server can index the folder and create tiles from
+
+
+For example given a structure where there are two folders full of tiffs
+
+```
+/images/00_gebco_2021_305-75m/01G0DBCAEQAAPD0D2F2VZS40XM/*.tiff
+/images/10_geographx_nz_texture_shade_2012_8-0m_01FHRPYJ5FV1XAARZAC4T4K6MC/*.tiff
+```
+
+running `basemaps-server --config /images` will create two tile sets one for each folder `gebco_2021...` and `geographx_nz_t...` and then also create a combined layer in the order the tiffs are found.

packages/server/src/cli.ts

@@ -47,6 +47,7 @@ export class BasemapsServerCommand extends Command {
 
         const tileSet = basename(tiffPath);
         const tsl = new TileSetLocal(tileSet, tiffPath);
+        tifSets.set(tiffPath, tsl);
 
         await tsl.load();
         TileSets.add(tsl, new Date('3000-01-01').getTime());