smarter updates

src/fetchCollection.js

@@ -77,11 +77,46 @@ export async function update_user_games(db, username) {
         'INSERT into game (username, bgg_id, name, thumbnail, notes,price,updated_at) VALUES(@username,@bgg_id,@name,@thumbnail,@notes,@price,@updated_at)',
     );
 
+    const update = db.prepare(
+        'UPDATE game set notes=@notes, price=@price, updated_at=@updated_at  where username=@username and bgg_id=@bgg_id',
+    );
+
+    const game_present = db.prepare(
+        'SELECT notes, price from game where username = ? AND bgg_id = ?',
+    );
+
+    const already_there = games
+        .map(({ bgg_id }) => bgg_id)
+        .map((id) => `'${id}'`)
+        .join(',');
     await db
-        .prepare('DELETE FROM game where username = @username')
+        .prepare(
-        .run({ username });
+            `DELETE FROM game where username = @username AND bgg_id not in (${already_there})`,
+        )
+        .run({
+            username,
+        });
 
     for (let game of games) {
+        console.log(game.name);
+        const existing_game = game_present.get(username, game.bgg_id);
+        if (existing_game) {
+            if (
+                ['notes', 'price'].some(
+                    (attr) => existing_game[attr] != game[attr],
+                )
+            ) {
+                console.log('updating game');
+                update.run({
+                    ...game,
+                    updated_at,
+                    username,
+                });
+            } else {
+                console.log("didn't change");
+            }
+        } else {
+            console.log('new game!');
             insert.run({
                 username,
                 updated_at,
@@ -89,3 +124,4 @@ export async function update_user_games(db, username) {
             });
         }
     }
+}

src/scripts/updateUsers.js

@@ -6,6 +6,7 @@ const users = db.prepare('SELECT username from bgg_user').all();
 
 await Promise.all(
     users.map(({ username }) => {
+        console.log(username);
         return update_user_games(db, username)
             .then(() => console.log(username, 'is done'))
             .catch((e) => console.error(e));