import { pgTable, varchar, text, timestamp, index } from 'drizzle-orm/pg-core';
import { companies, users } from './tenancy';
import { notificationKindEnum, pk, fk, createdAt } from './_shared';

export const notifications = pgTable(
	'notifications',
	{
		id: pk(),
		userId: fk('user_id')
			.notNull()
			.references(() => users.id, { onDelete: 'cascade' }),
		companyId: fk('company_id')
			.notNull()
			.references(() => companies.id, { onDelete: 'cascade' }),
		kind: notificationKindEnum('kind').notNull(),
		title: varchar('title', { length: 255 }).notNull(),
		body: text('body').notNull(),
		// Absolute or relative URL back into the app (e.g. /assets/<id>).
		link: varchar('link', { length: 1024 }),
		readAt: timestamp('read_at', { withTimezone: true }),
		createdAt: createdAt()
	},
	(t) => ({
		// Unread-list query: user + read_at IS NULL + ordered by created_at desc.
		byUserUnread: index('notifications_by_user_unread').on(t.userId, t.readAt, t.createdAt),
		byUserCompany: index('notifications_by_user_company').on(t.userId, t.companyId, t.createdAt)
	})
);

export type Notification = typeof notifications.$inferSelect;
export type NewNotification = typeof notifications.$inferInsert;