WSGI compatible (allow gunicorn use)

.gitignore

@@ -1 +1,3 @@
-data
+*.pyc
+
+data

server.py

@@ -1,4 +1,3 @@
-from argparse import ArgumentParser
 import logging
 from pathlib import Path
 import urllib.error
@@ -7,18 +6,7 @@ import urllib.request
 from flask import Flask, send_file
 
 
-def main():
-    parser = ArgumentParser()
-    parser.add_argument('--host', default='0.0.0.0', help='Server host (default: 0.0.0.0)')
-    parser.add_argument('--port', type=int, default=8000, help='Server port (default: 8000)')
-    parser.add_argument('--debug', action='store_true', help='Run in debug mode (auto-reload on change)')
-    arguments = parser.parse_args()
-
-    host: str = arguments.host
-    port: int = arguments.port
-    debug_mode: bool = arguments.debug
-    del arguments
-
+def create_app(debug_mode: bool = False):
     app = Flask('map_server', static_folder='public', static_url_path='/')
     osm_timeout = 3
     http_code_ok = 200
@@ -52,8 +40,4 @@ def main():
         except urllib.error.URLError as error:
             return f'Cannot retrieve tile: {error}', 501
 
-    app.run(host=host, port=port, debug=debug_mode)
-
-
-if __name__ == '__main__':
-    main()
+    return app

start.py

@@ -0,0 +1,23 @@
+from argparse import ArgumentParser
+
+from server import create_app
+
+
+def main():
+    parser = ArgumentParser()
+    parser.add_argument('--host', default='0.0.0.0', help='Server host (default: 0.0.0.0)')
+    parser.add_argument('--port', type=int, default=8000, help='Server port (default: 8000)')
+    parser.add_argument('--debug', action='store_true', help='Run in debug mode (auto-reload on change)')
+    arguments = parser.parse_args()
+
+    host: str = arguments.host
+    port: int = arguments.port
+    debug_mode: bool = arguments.debug
+    del arguments
+
+    app = create_app(debug_mode=debug_mode)
+    app.run(host=host, port=port, debug=debug_mode)
+
+
+if __name__ == '__main__':
+    main()