From 35435296003f6de9229b30a4998fa3cea8443fee Mon Sep 17 00:00:00 2001
From: Sjors Provoost <sjors@sprovoost.nl>
Date: Fri, 6 Sep 2024 13:02:12 +0200
Subject: [PATCH] Add GPS coordinate as wgs84 tag

---
 main.ts | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/main.ts b/main.ts
index 7699336..0afc4ca 100644
--- a/main.ts
+++ b/main.ts
@@ -92,6 +92,7 @@ for (const i in posts) {
 
     // Populated from the first media item with coordinates
     let geotags;
+    let event_tags: string[][] = [];
 
     let first = true;
     for (const j in post.media) {
@@ -146,15 +147,20 @@ for (const i in posts) {
                 iso31663: false
             };
 
-            let exif_data = media.media_metadata.photo_metadata.exif_data;
+            const exif_data = media.media_metadata.photo_metadata.exif_data;
             if (exif_data) {
                 for (const k in exif_data) {
                     const exif_item = exif_data[k];
                     if (exif_item.latitude != undefined && exif_item.latitude != undefined) {
-                        geotags = ngeotags({
+                        // Add coordinates as a tag.
+                        // There is currently no NIP defining a wgs84 tag!
+                        event_tags.push(['wgs84', String(exif_item.latitude), String(exif_item.longitude)])
+                        // Encode coordinates as Geohash in different resolutions:
+                        // https://en.wikipedia.org/wiki/Geohash
+                        event_tags = [...event_tags, ...ngeotags({
                             lat: exif_item.latitude,
                             lon: exif_item.longitude
-                        }, options);
+                        }, options)];
                     }
                 }
             }
@@ -165,12 +171,9 @@ for (const i in posts) {
     let event = {
         kind: 1,
         content: message,
-        tags: [],
+        tags: event_tags,
         created_at: created_at
     }
-    if (geotags != undefined) {
-        event.tags = [...event.tags, ...geotags];
-    }
     const signed_event = await signer.signEvent(event);
     console.log(signed_event);
     events.push(signed_event);