feat(app): add db & schema

ui/lib/db/index.ts

@@ -0,0 +1,11 @@
+import { drizzle } from 'drizzle-orm/better-sqlite3';
+import Database from 'better-sqlite3';
+import * as schema from './schema';
+import path from 'path';
+
+const sqlite = new Database(path.join(process.cwd(), 'data/db.sqlite'));
+const db = drizzle(sqlite, {
+  schema: schema,
+});
+
+export default db;

ui/lib/db/schema.ts

@@ -0,0 +1,28 @@
+import { sql } from 'drizzle-orm';
+import { text, integer, sqliteTable } from 'drizzle-orm/sqlite-core';
+
+export const messages = sqliteTable('messages', {
+  id: integer('id').primaryKey(),
+  content: text('content').notNull(),
+  chatId: text('chatId').notNull(),
+  messageId: text('messageId').notNull(),
+  role: text('type', { enum: ['assistant', 'user'] }),
+  metadata: text('metadata', {
+    mode: 'json',
+  }),
+});
+
+interface File {
+  name: string;
+  fileId: string;
+}
+
+export const chats = sqliteTable('chats', {
+  id: text('id').primaryKey(),
+  title: text('title').notNull(),
+  createdAt: text('createdAt').notNull(),
+  focusMode: text('focusMode').notNull(),
+  files: text('files', { mode: 'json' })
+    .$type<File[]>()
+    .default(sql`'[]'`),
+});