Extracting GPS coordinates from exif

src/lib/exif.ts

@@ -0,0 +1,26 @@
+import piexif from 'piexifjs';
+
+export const getDate = (exifObj: any) => {
+  const dateSegments = exifObj.Exif[piexif.ExifIFD.DateTimeOriginal].split(' ');
+  const date = `${dateSegments[0].replaceAll(':', '-')}T${dateSegments[1]}.${
+    exifObj.Exif[piexif.ExifIFD.SubSecTimeOriginal] || '0'
+  }${exifObj.Exif[piexif.ExifIFD.OffsetTimeOriginal]}`;
+  return new Date(date);
+};
+
+export const getGps = (exifObj: any) => {
+  const toNumber = (start: number) => {
+    const sign = ['N', 'E'].includes(exifObj.GPS[start]) ? 1 : -1;
+    const value = exifObj.GPS[start + 1];
+    return (
+      sign *
+      (value[0][0] / value[0][1] +
+        (value[1][0] / value[1][1] + value[2][0] / value[2][1] / 60) / 60)
+    );
+  };
+  return {
+    latitude: toNumber(1),
+    longitude: toNumber(3),
+    elevation: exifObj.GPS[6][0] / exifObj.GPS[6][1],
+  };
+};