Fix loose config with environment variables

src/treetrail/config.py

@@ -64,14 +64,8 @@ def get_cache_dir() -> Path:
     return Path(conf.storage.root_cache_path)
 
 
-class MyBaseSettings(BaseSettings):
-    model_config = SettingsConfigDict(
-        env_prefix="treetrail_",
-        env_nested_delimiter="_",
-    )
-
-
-class DB(MyBaseSettings):
+class DB(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_db_")
     # uri: str
     host: str = "treetrail-database"
     port: int = 5432
@@ -91,16 +85,19 @@ class DB(MyBaseSettings):
         return f"postgresql://{self.user}:{self.password}@{self.host}:{self.port}/{self.db}"
 
 
-class App(MyBaseSettings):
+class App(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_app_")
     title: str = "Tree Trail"
 
 
-class Storage(MyBaseSettings):
+class Storage(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_storage_")
     root_attachment_path: str = "/var/lib/treetrail/attachments"
     root_cache_path: str = "/var/lib/treetrail/cache"
 
 
-class Tiles(MyBaseSettings):
+class Tiles(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_tiles_")
     baseDir: str = "/var/lib/treetrail/mbtiles_files"
     useRequestUrl: bool = True
     spriteBaseDir: str = "/var/lib/treetrail/mbtiles_sprites"
@@ -109,7 +106,8 @@ class Tiles(MyBaseSettings):
     osmBaseDir: str = "/var/lib/treetrail/osm"
 
 
-class Map(MyBaseSettings):
+class Map(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_map_")
     zoom: float = 14.0
     pitch: float = 0.0
     lat: float = 45.8822
@@ -118,12 +116,14 @@ class Map(MyBaseSettings):
     background: str = "OpenFreeMap"
 
 
-class Geo(MyBaseSettings):
+class Geo(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_geo_")
     simplify_geom_factor: int = 10000000
     simplify_preserve_topology: bool = False
 
 
-class Security(MyBaseSettings):
+class Security(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_security_")
     """
     JWT security configuration
     """
@@ -133,12 +133,14 @@ class Security(MyBaseSettings):
     access_token_expire_minutes: float = 30
 
 
-class ExternalMapStyle(MyBaseSettings):
+class ExternalMapStyle(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_external_map_style_")
     name: str
     url: str
 
 
-class Config(MyBaseSettings):
+class Config(BaseSettings):
+    model_config = SettingsConfigDict(env_prefix="treetrail_")
 
     @classmethod
     def settings_customise_sources(
@@ -161,7 +163,7 @@ class Config(MyBaseSettings):
     tiles: Tiles = Tiles()
     security: Security = Security()
     geo: Geo = Geo()
-    version: str = '-'
+    version: str = "-"
     db: DB = DB()
     base_href: str = "/treetrail"