add: impl photo_points()

main.py

@@ -145,36 +145,30 @@ async def rate_picture(cookie: str, picture_id: int, mark: int):
 
     return {"status": "success"}
 
+
 @app.get("/photo_points")
-def photo_points():
+async def photo_points():
     """Get points with the url of a photo and the rate"""
+    # assume we always have at least some photos
+    # fetch them all
+    cur.execute(
+        """SELECT images.imgid, resizedpath, GPSLatitude, GPSLongitude, 
+                    100*SUM(marks.mark)/COUNT(marks.mark)/MAX(marks.mark)
+                FROM images
+                LEFT JOIN marks ON images.imgid = marks.imgid
+                GROUP BY images.imgid;
+        """,  # 100 * SUM(marks.mark)/COUNT(marks.mark)/MAX(marks.mark)
+        # is an ad-hoc percentage of likes without know how front end defined like/dislike
+        # returns None with no marks (sqlite handles division by 0 gracefully)
+    )
+    points = cur.fetchall()
     return [
         {
-            "id": 0,
-            "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/JPEG_example_down.jpg/350px-JPEG_example_down.jpg",
-            "lon": 37.34542,
-            "lat": 55.12323,
-            "rate": 36  # percentage of likes
-        },
-        {
-            "id": 1,
-            "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/JPEG_example_down.jpg/350px-JPEG_example_down.jpg", 
-            "lon": 37.34342,
-            "lat": 55.12423,
-            "rate": 62  # percentage of likes
-        },
-        {
-            "id": 2,
-            "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/JPEG_example_down.jpg/350px-JPEG_example_down.jpg",
-            "lon": 37.34642,
-            "lat": 55.12223,
-            "rate": 43  # percentage of likes
-        },
-        {
-            "id": 3,
-            "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/JPEG_example_down.jpg/350px-JPEG_example_down.jpg",
-            "lon": 37.34342,
-            "lat": 55.12923,
-            "rate": 90  # percentage of likes
+            "id": point["imgid"],
+            "url": point["resizedpath"],
+            "lon": point["GPSLongitude"],
+            "lat": point["GPSLatitude"],
+            "rate": point["100*SUM(marks.mark)/COUNT(marks.mark)/MAX(marks.mark)"],
         }
+        for point in points
     ]