main.py

@@ -166,16 +166,15 @@ 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
-    # if frontend uses 1 and 0 to represent like and dislike
-    # we can just take the average and turn it into %
-    # 100 * AVG(marks.mark)
     cur.execute(
         """SELECT images.imgid, resizedpath, GPSLatitude, GPSLongitude, 
-                    100 * AVG(marks.mark)
+                    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 [
@@ -184,7 +183,7 @@ async def photo_points():
             "url": point["resizedpath"],
             "lon": point["GPSLongitude"],
             "lat": point["GPSLatitude"],
-            "rate": point["100 * AVG(marks.mark)"],
+            "rate": point["100*SUM(marks.mark)/COUNT(marks.mark)/MAX(marks.mark)"],
         }
         for point in points
     ]

util/import_photos.py

@@ -6,50 +6,9 @@ import filetype
 from os import path, walk
 from sys import argv, stderr
 from shutil import move
-from fractions import Fraction
 import sqlite3
 
 
-def decimal_from_rational64u(dms: str, ref):
-    """Convert coordinates from rational64u EXIF uses to represent
-    degrees, minutes, and seconds of a point to decimal format
-    Take into account reference cardinal direction and
-    turn [S]outh and [W]est coordinates negative
-
-    General formula is
-    dec_degree = degreesNumerator / degreesDenominator
-                 + minutesNumerator / minutesDenominator / 60
-                 + secondsNumerator / secondsDenominator / 3600
-
-    https://en.wikipedia.org/wiki/Geographic_coordinate_conversion
-    https://gis.stackexchange.com/questions/136925/how-to-parse-exif-gps-information-to-lat-lng-decimal-numbers
-
-    >>> decimal_from_rational64u(dms="42/1, 18/1, 2914/100", "S")
-    -42.30809
-    """
-
-    # 1 split by comma
-    # 2 turn each into Fraction
-    # 3 zip fractions with their respective (degrees, minutes, seconds) denominator
-    # 4 divide the fraction
-    # 5 sum up the result
-    # 6 convert to decimal
-    # 7 round to 5th decimal point
-    dec_coordinates = round(
-        float(
-            sum(
-                a / b
-                for (a, b) in zip((Fraction(f) for f in dms.split(",")), (1, 60, 3600))
-            )
-        ),
-        5,
-    )
-    if ref in ("S", "W"):
-        dec_coordinates = -dec_coordinates
-
-    return dec_coordinates
-
-
 def process_pictures(source: str, dest_shrunk: str, dest_original: str):
     """Process images from the base directory in the first command line argument.
     Place the resized copies to dest_shrunk and
@@ -73,14 +32,8 @@ def process_pictures(source: str, dest_shrunk: str, dest_original: str):
                 (k[5:], v) for k, v in image.metadata.items() if k.startswith("exif:")
             )
             with image.clone() as cloned:
-                # adjust an image so that its orientation is suitable for viewing
-                # (i.e. top-left orientation) by checking EXIF data
-                cloned.auto_orient()
-                # strip an image of all profiles and comments
                 cloned.strip()  # Q: may damage icc, do we allow that or use smh else?
-                # resize the shorter side to be no more than 1000px
-                # https://legacy.imagemagick.org/discourse-server/viewtopic.php?p=44329#p44329
-                cloned.transform(resize="1000^>")  # Q: what do we want here?
+                cloned.transform(resize="50%")  # Q: what do we want here?
                 # move them to the processed folder
                 cloned.save(filename=path.join(dest_shrunk, filename))
 
@@ -94,12 +47,10 @@ def process_pictures(source: str, dest_shrunk: str, dest_original: str):
                 "ResizedImage": path.join(dest_shrunk, filename),
                 "OriginalImage": path.join(dest_original, filename),
                 "DateTimeOriginal": exif["DateTimeOriginal"],  # Q: normalize it?
-                "GPSLatitude": decimal_from_rational64u(
-                    exif["GPSLatitude"], exif["GPSLatitudeRef"]
-                ),
-                "GPSLongitude": decimal_from_rational64u(
-                    exif["GPSLongitude"], exif["GPSLongitudeRef"]
-                ),
+                "GPSLatitude": exif["GPSLatitude"],
+                "GPSLatitudeRef": exif["GPSLatitudeRef"],
+                "GPSLongitude": exif["GPSLongitude"],
+                "GPSLongitudeRef": exif["GPSLongitudeRef"],
             }
         except KeyError as e:
             print(f"Image '{filename}' has no valid exif")
@@ -121,14 +72,18 @@ def update_database(pic_info: dict, db_location: str):
         """INSERT INTO images(resizedpath, 
                             origpath, 
                             date, 
-                            GPSLatitude,
-                            GPSLongitude)
+                            GPSLatitude, 
+                            GPSLatitudeRef, 
+                            GPSLongitude, 
+                            GPSLongitudeRef)
 
         VALUES             (:ResizedImage, 
                             :OriginalImage, 
                             :DateTimeOriginal, 
                             :GPSLatitude, 
-                            :GPSLongitude)
+                            :GPSLatitudeRef, 
+                            :GPSLongitude, 
+                            :GPSLongitudeRef)
     """,
         pic_info,
     )
@@ -159,8 +114,10 @@ def check_database(database_path: str):
                     resizedpath TEXT NOT NULL,
                     origpath TEXT NOT NULL,
                     date TEXT,  
-                    GPSLatitude REAL,  
-                    GPSLongitude REAL 
+                    GPSLatitude TEXT,  
+                    GPSLatitudeRef TEXT,  
+                    GPSLongitude TEXT, 
+                    GPSLongitudeRef TEXT
                     )"""
         )
         con.commit()