index.ts

@@ -174,9 +174,11 @@ function addEventToDb(
   if (existingEvent) throw new EventAlreadyExistsException();
   try {
     db.run("BEGIN TRANSACTION");
+
     if (isReplaceableEvent(decryptedEvent.kind)) {
       sql`
-        DELETE FROM events 
+        UPDATE events 
+        SET replaced = 1
         WHERE kind = ${decryptedEvent.kind}
         AND pubkey = ${decryptedEvent.pubkey}
         AND created_at < ${decryptedEvent.created_at}
@@ -187,7 +189,8 @@ function addEventToDb(
       const dTag = decryptedEvent.tags.find((tag) => tag[0] === "d")?.[1];
       if (dTag) {
         sql`
-          DELETE FROM events 
+          UPDATE events 
+          SET replaced = 1
           WHERE kind = ${decryptedEvent.kind}
           AND pubkey = ${decryptedEvent.pubkey}
           AND created_at < ${decryptedEvent.created_at}
@@ -386,7 +389,7 @@ function handleRequest(connection: UserConnection, request: NostrClientREQ) {
     }`,
   );
 
-  let query = sqlPartial`SELECT * FROM events`;
+  let query = sqlPartial`SELECT * FROM events WHERE replaced = 0`;
 
   const filtersAreNotEmpty = filters.some((filter) => {
     return Object.values(filter).some((value) => {
@@ -395,7 +398,7 @@ function handleRequest(connection: UserConnection, request: NostrClientREQ) {
   });
 
   if (filtersAreNotEmpty) {
-    query = mixQuery(query, sqlPartial`WHERE`);
+    query = mixQuery(query, sqlPartial`AND`);
 
     for (let i = 0; i < filters.length; i++) {
       // filters act as OR, filter groups act as AND
@@ -548,12 +551,36 @@ function handleRequest(connection: UserConnection, request: NostrClientREQ) {
     const rawTags = sql`SELECT * FROM event_tags_view WHERE event_id = ${
       events[i].id
     }`(connection.db);
-    const tags: { [key: string]: string[] } = {};
-    for (const item of rawTags) {
-      if (!tags[item.tag_name]) tags[item.tag_name] = [item.tag_name];
-      tags[item.tag_name].push(item.tag_value);
+    const tagsByIndex = new Map<number, {
+      name: string;
+      values: Map<number, string>;
+    }>();
+
+    for (const tag of rawTags) {
+      let tagData = tagsByIndex.get(tag.tag_index);
+      if (!tagData) {
+        tagData = {
+          name: tag.tag_name,
+          values: new Map(),
+        };
+        tagsByIndex.set(tag.tag_index, tagData);
       }
-    const tagsArray = Object.values(tags);
+
+      tagData.values.set(tag.tag_value_position, tag.tag_value);
+    }
+
+    const tagsArray = Array.from(tagsByIndex.entries())
+      .sort(([indexA], [indexB]) => indexA - indexB)
+      .map(([_, tagData]) => {
+        const { name, values } = tagData;
+
+        return [
+          name,
+          ...Array.from(values.entries())
+            .sort(([posA], [posB]) => posA - posB)
+            .map(([_, value]) => value),
+        ];
+      });
 
     const event = {
       id: events[i].id,

migrations/3-replaceableEvents.sql

@@ -0,0 +1,2 @@
+ALTER TABLE events 
+ADD COLUMN replaced INTEGER NOT NULL DEFAULT 0;