feat(db): add migrations

drizzle/0001_acoustic_wild_pack.sql

@@ -0,0 +1,51 @@
+PRAGMA foreign_keys=OFF;
+--> statement-breakpoint
+
+CREATE TABLE `__new_messages` (
+	`id` integer PRIMARY KEY NOT NULL,
+	`type` text NOT NULL,
+	`chatId` text NOT NULL,
+	`createdAt` text DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	`messageId` text NOT NULL,
+	`content` text,
+	`sources` text DEFAULT '[]'
+);
+--> statement-breakpoint
+
+INSERT INTO `__new_messages`("id", "type", "chatId", "createdAt", "messageId", "content", "sources") 
+SELECT 
+    id,
+    COALESCE(type, 'user') as type,
+    chatId,
+    CASE
+        WHEN metadata IS NOT NULL AND instr(metadata, '\"createdAt\":\"') > 0 THEN
+            substr(
+                metadata,
+                instr(metadata, '\"createdAt\":\"') + 14,
+                CASE
+                    WHEN instr(substr(metadata, instr(metadata, '\"createdAt\":\"') + 14), '\"') > 0 THEN
+                        instr(substr(metadata, instr(metadata, '\"createdAt\":\"') + 14), '\"') - 1
+                    ELSE 24
+                END
+            )
+        ELSE CURRENT_TIMESTAMP
+    END as createdAt,
+    messageId,
+    content,
+    '[]' as sources
+FROM `messages`;
+--> statement-breakpoint
+
+DROP TABLE `messages`;
+--> statement-breakpoint
+ALTER TABLE `__new_messages` RENAME TO `messages`;
+--> statement-breakpoint
+
+PRAGMA foreign_keys=ON;
+--> statement-breakpoint
+
+CREATE INDEX IF NOT EXISTS `idx_messages_chatId` ON `messages` (`chatId`);
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS `idx_messages_type` ON `messages` (`type`);
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS `idx_messages_createdAt` ON `messages` (`createdAt`);