Store the original message when linking

Now we can search the database for non-original messages Only for when
we want to scan for editable messages and stuff

phoebe/migrations/20220416061935_create_message_links_table.sql

@@ -3,8 +3,10 @@ CREATE TABLE message_links (
 ) STRICT;
 
 CREATE TABLE messages (
+  message_id INTEGER PRIMARY KEY,
   link_id INTEGER NOT NULL REFERENCES message_links(id),
   service TEXT NOT NULL,
   channel TEXT NOT NULL,
-  message TEXT NOT NULL
-)
+  message TEXT NOT NULL,
+  original INTEGER
+) STRICT;

phoebe/src/lib.rs

@@ -55,17 +55,34 @@ pub async fn link_messages(
         .await?
         .last_insert_rowid();
 
-    for resultant in std::iter::once(origin).chain(messages) {
+    let original_id = {
+        let service = &origin.channel.service;
+        let channel = &origin.channel.id;
+        let message = &origin.message_id;
+
+        let query = sqlx::query!(
+            "INSERT INTO messages (link_id, service, channel, message, original) VALUES (?, ?, ?, ?, NULL)",
+            message_link,
+            service,
+            channel,
+            message
+        );
+
+        query.execute(&mut *conn).await?.last_insert_rowid()
+    };
+
+    for resultant in messages {
         let service = &resultant.channel.service;
         let channel = &resultant.channel.id;
         let message = &resultant.message_id;
 
         let query = sqlx::query!(
-            "INSERT INTO messages VALUES (?, ?, ?, ?)",
+            "INSERT INTO messages (link_id, service, channel, message, original) VALUES (?, ?, ?, ?, ?)",
             message_link,
             service,
             channel,
-            message
+            message,
+            original_id
         );
 
         let _ = query.execute(&mut *conn).await?;