feat(migration): add created_at and is_deleted columns

Update blog_posts table migration to add created_at and is_deleted
columns
safely if they do not exist. Adjust down migration to drop only these
columns. Update events seeder to reset events_id_seq after inserts.

Author: Kocannn

database/migration/20250709055337_table_add_column_created_at_and_isdeleted.sql

@@ -1,16 +1,17 @@
 -- +goose Up
 -- +goose StatementBegin
-SELECT 'up SQL query';
-
-ALTER TABLE blog_posts
-  ADD COLUMN created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-  ADD COLUMN is_deleted BOOLEAN DEFAULT FALSE;
-
-
-
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name='blog_posts' AND column_name='created_at') THEN
+        ALTER TABLE blog_posts ADD COLUMN created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP;
+    END IF;
+    
+    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name='blog_posts' AND column_name='is_deleted') THEN
+        ALTER TABLE blog_posts ADD COLUMN is_deleted BOOLEAN DEFAULT FALSE;
+    END IF;
+END $$;
 -- +goose StatementEnd
 
 -- +goose Down
--- +goose StatementBegin
-DROP TABLE IF EXISTS blog_posts CASCADE;
--- +goose StatementEnd
+ALTER TABLE blog_posts DROP COLUMN IF EXISTS created_at;
+ALTER TABLE blog_posts DROP COLUMN IF EXISTS is_deleted;

database/seeder/20250522114645_seed_events.sql

@@ -25,6 +25,8 @@ INSERT INTO "public"."events" (
     '2025-07-01 00:00:00', '2025-08-05 23:59:59', 'hackathon',
     'Innovation Labs', '48 hours', 'upcoming', 50.00, 100,
     'https://example.com/register/app-hackathon', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP);
+
+SELECT setval('events_id_seq', (SELECT MAX(id) FROM events), true);
 -- +goose StatementEnd
 
 -- +goose Down