Refactor to use hooks (#436)

db/schema.ts

@@ -0,0 +1,24 @@
+import { Message } from "ai";
+import { InferSelectModel } from "drizzle-orm";
+import { pgTable, varchar, timestamp, json, uuid } from "drizzle-orm/pg-core";
+
+export const user = pgTable("User", {
+  id: uuid("id").primaryKey().notNull().defaultRandom(),
+  email: varchar("email", { length: 64 }).notNull(),
+  password: varchar("password", { length: 64 }),
+});
+
+export type User = InferSelectModel<typeof user>;
+
+export const chat = pgTable("Chat", {
+  id: uuid("id").primaryKey().notNull().defaultRandom(),
+  createdAt: timestamp("createdAt").notNull(),
+  messages: json("messages").notNull(),
+  userId: uuid("userId")
+    .notNull()
+    .references(() => user.id),
+});
+
+export type Chat = Omit<InferSelectModel<typeof chat>, "messages"> & {
+  messages: Array<Message>;
+};