From 79bd70942b35f548eac44709915857602353e691 Mon Sep 17 00:00:00 2001
From: Hermann Schwarting <Hermann.Schwarting@targomo.com>
Date: Wed, 22 Apr 2020 21:02:34 +0200
Subject: [PATCH] Fix preview thumbnail for raster data sources

The data sources structure was changed in the 'dynamic_styles' branch
introducing a tileJSON object. Adapt the code filling the preview
template to the change to get the correct file format instead of
"undefined".

See also f2dc13e.

Fix #440 Preview thumbnail missing for raster data source -- file suffix
"undefined"
---
 src/server.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server.js b/src/server.js
index cf15fed..6b258e0 100644
--- a/src/server.js
+++ b/src/server.js
@@ -362,7 +362,7 @@ function start(opts) {
       if (!data_.is_vector) {
         if (center) {
           const centerPx = mercator.px([center[0], center[1]], center[2]);
-          data_.thumbnail = `${center[2]}/${Math.floor(centerPx[0] / 256)}/${Math.floor(centerPx[1] / 256)}.${data_.format}`;
+          data_.thumbnail = `${center[2]}/${Math.floor(centerPx[0] / 256)}/${Math.floor(centerPx[1] / 256)}.${data_.tileJSON.format}`;
         }
 
         data_.xyz_link = utils.getTileUrls(