From 7ddc2dec6424040c2672602af33483e21a694fbd Mon Sep 17 00:00:00 2001
From: Cameron <ccordes12@mail.bw.edu>
Date: Wed, 17 Dec 2025 22:31:16 -0500
Subject: [PATCH] Add indexes for favorite de-duplication

---
 .../2025-12-17-230100_unique_favorites/down.sql      |  3 +++
 migrations/2025-12-17-230100_unique_favorites/up.sql | 12 ++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 migrations/2025-12-17-230100_unique_favorites/down.sql
 create mode 100644 migrations/2025-12-17-230100_unique_favorites/up.sql

diff --git a/migrations/2025-12-17-230100_unique_favorites/down.sql b/migrations/2025-12-17-230100_unique_favorites/down.sql
new file mode 100644
index 0000000..b42819b
--- /dev/null
+++ b/migrations/2025-12-17-230100_unique_favorites/down.sql
@@ -0,0 +1,3 @@
+-- Rollback unique constraint on favorites
+
+DROP INDEX IF EXISTS idx_favorites_unique;
diff --git a/migrations/2025-12-17-230100_unique_favorites/up.sql b/migrations/2025-12-17-230100_unique_favorites/up.sql
new file mode 100644
index 0000000..b123617
--- /dev/null
+++ b/migrations/2025-12-17-230100_unique_favorites/up.sql
@@ -0,0 +1,12 @@
+-- Add unique constraint to prevent duplicate favorites per user
+
+-- First, remove any existing duplicates (keep the oldest one)
+DELETE FROM favorites
+WHERE rowid NOT IN (
+    SELECT MIN(rowid)
+    FROM favorites
+    GROUP BY userid, path
+);
+
+-- Add unique index to enforce constraint
+CREATE UNIQUE INDEX idx_favorites_unique ON favorites(userid, path);