Added Backend

backend/db/schema/helpdesk_messages.ts

@@ -0,0 +1,46 @@
+import {
+    pgTable,
+    uuid,
+    timestamp,
+    text,
+    jsonb,
+    bigint,
+} from "drizzle-orm/pg-core"
+
+import { tenants } from "./tenants"
+import { helpdesk_contacts } from "./helpdesk_contacts"
+import { helpdesk_conversations } from "./helpdesk_conversations"
+import { authUsers } from "./auth_users"
+
+export const helpdesk_messages = pgTable("helpdesk_messages", {
+    id: uuid("id").primaryKey().defaultRandom(),
+
+    tenantId: bigint("tenant_id", { mode: "number" })
+        .notNull()
+        .references(() => tenants.id, { onDelete: "cascade" }),
+
+    conversationId: uuid("conversation_id")
+        .notNull()
+        .references(() => helpdesk_conversations.id, { onDelete: "cascade" }),
+
+    direction: text("direction").notNull(),
+
+    authorUserId: uuid("author_user_id").references(() => authUsers.id),
+
+    payload: jsonb("payload").notNull(),
+
+    rawMeta: jsonb("raw_meta"),
+
+    createdAt: timestamp("created_at", { withTimezone: true }).defaultNow(),
+
+    contactId: uuid("contact_id").references(() => helpdesk_contacts.id, {
+        onDelete: "set null",
+    }),
+
+    externalMessageId: text("external_message_id").unique(),
+
+    receivedAt: timestamp("received_at", { withTimezone: true }).defaultNow(),
+})
+
+export type HelpdeskMessage = typeof helpdesk_messages.$inferSelect
+export type NewHelpdeskMessage = typeof helpdesk_messages.$inferInsert