Restored to '84d7de2da64f8f2fd1e2d64959817c64c8fb7c04'

Replit-Restored-To: 84d7de2da6

shared/models/chat.ts

@@ -0,0 +1,34 @@
+import { pgTable, serial, integer, text, timestamp } from "drizzle-orm/pg-core";
+import { createInsertSchema } from "drizzle-zod";
+import { z } from "zod";
+import { sql } from "drizzle-orm";
+
+export const conversations = pgTable("conversations", {
+  id: serial("id").primaryKey(),
+  title: text("title").notNull(),
+  createdAt: timestamp("created_at").default(sql`CURRENT_TIMESTAMP`).notNull(),
+});
+
+export const messages = pgTable("messages", {
+  id: serial("id").primaryKey(),
+  conversationId: integer("conversation_id").notNull().references(() => conversations.id, { onDelete: "cascade" }),
+  role: text("role").notNull(),
+  content: text("content").notNull(),
+  createdAt: timestamp("created_at").default(sql`CURRENT_TIMESTAMP`).notNull(),
+});
+
+export const insertConversationSchema = createInsertSchema(conversations).omit({
+  id: true,
+  createdAt: true,
+});
+
+export const insertMessageSchema = createInsertSchema(messages).omit({
+  id: true,
+  createdAt: true,
+});
+
+export type Conversation = typeof conversations.$inferSelect;
+export type InsertConversation = z.infer<typeof insertConversationSchema>;
+export type Message = typeof messages.$inferSelect;
+export type InsertMessage = z.infer<typeof insertMessageSchema>;
+