add a shortcut for Thunderforest maps

Now, we can add Thunderforest maps with

  thunderforest.api_key = ...
  thunderforest.maps = cycling ...

2 files changed, 20 insertions, 0 deletions

diff --git a/fietsboek/__init__.py b/fietsboek/__init__.py
index 21674f5..7aede7b 100644
--- a/fietsboek/__init__.py
+++ b/fietsboek/__init__.py
@@ -72,6 +72,8 @@ def main(global_config, **settings):
         settings.get('available_locales', 'en'))
     settings['fietsboek.pages'] = aslist(
         settings.get('fietsboek.pages', ''))
+    settings['thunderforest.maps'] = aslist(
+        settings.get('thunderforest.maps', ''))
     settings['fietsboek.default_tile_layers'] = aslist(
         settings.get('fietsboek.default_tile_layers',
                      'osm satellite osmde opentopo topplusopen opensea cycling hiking'))
diff --git a/fietsboek/views/tileproxy.py b/fietsboek/views/tileproxy.py
index 42e1a67..ff68e30 100644
--- a/fietsboek/views/tileproxy.py
+++ b/fietsboek/views/tileproxy.py
@@ -263,6 +263,24 @@ def extract_tile_layers(settings):
     :rtype: list[TileSource]
     """
     layers = []
+    # Thunderforest Shortcut!
+    tf_api_key = settings.get("thunderforest.api_key")
+    if tf_api_key:
+        tf_access = LayerAccess(settings.get("thunderforest.access", "restricted"))
+        tf_attribution = ' | '.join([
+            _jb_copy,
+            _href("https://www.thunderforest.com/", "Thunderforest"),
+            _href("https://www.openstreetmap.org/", "OpenStreetMap"),
+        ])
+        for tf_map in settings["thunderforest.maps"]:
+            url = (f"https://tile.thunderforest.com/{tf_map}/"
+                   f"{{z}}/{{x}}/{{y}}.png?apikey={tf_api_key}")
+            layers.append(TileSource(
+                f"tf-{tf_map}", f"TF {tf_map.title()}", url,
+                LayerType.BASE, 22, tf_access, tf_attribution,
+            ))
+
+    # Any other custom maps
     for key in settings.keys():
         match = re.match("^fietsboek\\.tile_layer\\.([A-Za-z0-9_-]+)$", key)
         if not match: