API - workouts refactoring

fittrackee/workouts/utils/maps.py

@@ -0,0 +1,35 @@
+import hashlib
+from typing import List
+
+from flask import current_app
+from staticmap import Line, StaticMap
+
+from fittrackee.files import get_absolute_file_path
+
+
+def generate_map(map_filepath: str, map_data: List) -> None:
+    """
+    Generate and save map image from map data
+    """
+    m = StaticMap(400, 225, 10)
+    if not current_app.config['TILE_SERVER']['DEFAULT_STATICMAP']:
+        m.url_template = current_app.config['TILE_SERVER']['URL'].replace(
+            '{s}.', ''
+        )
+    line = Line(map_data, '#3388FF', 4)
+    m.add_line(line)
+    image = m.render()
+    image.save(map_filepath)
+
+
+def get_map_hash(map_filepath: str) -> str:
+    """
+    Generate a md5 hash used as id instead of workout id, to retrieve map
+    image (maps are sensitive data)
+    """
+    md5 = hashlib.md5()
+    absolute_map_filepath = get_absolute_file_path(map_filepath)
+    with open(absolute_map_filepath, 'rb') as f:
+        for chunk in iter(lambda: f.read(128 * md5.block_size), b''):
+            md5.update(chunk)
+    return md5.hexdigest()