Read GPS coordinates from XMP sidecar too

src/backend/model/fileaccess/MetadataLoader.ts

@@ -666,6 +666,22 @@ export class MetadataLoader {
                       metadata.creationDate;
                   }
                 }
+                if ((sidecarData as SideCar).exif !== undefined) {
+                  if (
+                    (sidecarData as SideCar).exif.GPSLatitude !== undefined &&
+                    (sidecarData as SideCar).exif.GPSLongitude !== undefined
+                  ) {
+                    metadata.positionData = metadata.positionData || {};
+                    metadata.positionData.GPSData = {};
+
+                    metadata.positionData.GPSData.longitude = Utils.xmpExifGpsCoordinateToDecimalDegrees(
+                      (sidecarData as SideCar).exif.GPSLongitude
+                    );
+                    metadata.positionData.GPSData.latitude = Utils.xmpExifGpsCoordinateToDecimalDegrees(
+                      (sidecarData as SideCar).exif.GPSLatitude
+                    );
+                  }
+                }
               }
             }
           }

src/common/Utils.ts

@@ -381,6 +381,14 @@ export class Utils {
     }
     return ret;
   }
+
+  public static xmpExifGpsCoordinateToDecimalDegrees(text: string): number {
+    const parts = text.match(/^([0-9]+),([0-9.]+)([EWNS])$/);
+    const degrees: number = parseInt(parts[1], 10);
+    const minutes: number = parseFloat(parts[2]);
+    const sign = (parts[3] === "N" || parts[3] === "E") ? 1 : -1;
+    return sign * (degrees + (minutes / 60.0))
+  }
 }
 
 export class LRU<V> {

src/common/entities/MediaDTO.ts

@@ -30,11 +30,17 @@ export interface MediaDimension {
 }
 
 export interface SideCar {
+  exif?: SideCarExif;
   dc?: SideCarDc;
   xmp?: SideCarXmp;
   photoshop?: SideCarPhotoshop;
 }
 
+export interface SideCarExif {
+  GPSLatitude?: string;
+  GPSLongitude?: string;
+}
+
 export interface SideCarDc {
   subject?: string[];
 }

test/backend/assets/sidecar/20240107_110258.json

@@ -18,5 +18,11 @@
     "Výlet",
     "Travel"
   ],
+  "positionData": {
+    "GPSData": {
+      "latitude": 50.08958748333333,
+      "longitude": 14.397409516666666
+    }
+  },
   "rating": 3
 }

test/backend/assets/sidecar/20240121_102400.json

@@ -19,5 +19,11 @@
     "Výlet",
     "Travel"
   ],
+  "positionData": {
+    "GPSData": {
+      "latitude": 50.08958748333333,
+      "longitude": 14.397409516666666
+    }
+  },
   "rating": 3
 }

test/backend/assets/sidecar/20240128_185808.json

@@ -19,5 +19,11 @@
     "Výlet",
     "Travel"
   ],
+  "positionData": {
+    "GPSData": {
+      "latitude": 50.08958748333333,
+      "longitude": 14.397409516666666
+    }
+  },
   "rating": 3
 }