feat: implement psql and improvements

src/lib/database/schema.ts

@@ -0,0 +1,97 @@
+import {
+	pgTable,
+	varchar,
+	integer,
+	date,
+	time,
+	timestamp,
+	uuid,
+	pgEnum,
+	index,
+	uniqueIndex,
+	check
+} from 'drizzle-orm/pg-core';
+import { sql } from 'drizzle-orm';
+import type { InferInsertModel, InferSelectModel } from 'drizzle-orm';
+
+// --- Enums (matching the SQL CHECK constraints)
+export const eventTypeEnum = pgEnum('event_type', ['limited', 'unlimited']);
+export const visibilityEnum = pgEnum('visibility', ['public', 'private']);
+
+// --- Events table
+export const events = pgTable(
+	'events',
+	{
+		id: varchar('id', { length: 8 }).primaryKey(),
+		name: varchar('name', { length: 100 }).notNull(),
+		date: date('date', { mode: 'string' }).notNull(), // ISO 'YYYY-MM-DD'
+		time: time('time', { withTimezone: false }).notNull(), // 'HH:MM:SS'
+		location: varchar('location', { length: 200 }).notNull(),
+		type: eventTypeEnum('type').notNull(),
+		attendeeLimit: integer('attendee_limit'), // nullable in SQL
+		userId: varchar('user_id', { length: 100 }).notNull(),
+		visibility: visibilityEnum('visibility').notNull().default('public'),
+		createdAt: timestamp('created_at', { withTimezone: true }).defaultNow(),
+		updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow()
+	},
+	(t) => ({
+		// Primary key already indexes id
+		idxEventsId: index('idx_events_id').on(t.id),
+		idxEventsUserId: index('idx_events_user_id').on(t.userId),
+		idxEventsVisibility: index('idx_events_visibility').on(t.visibility),
+		// CHECK (attendee_limit > 0) like in SQL (still allows NULL)
+		attendeeLimitPositive: check(
+			'events_attendee_limit_positive',
+			sql`${t.attendeeLimit} IS NULL OR ${t.attendeeLimit} > 0`
+		)
+	})
+);
+
+// --- RSVPs table
+export const rsvps = pgTable(
+	'rsvps',
+	{
+		id: uuid('id').defaultRandom().primaryKey(), // gen_random_uuid()
+		eventId: varchar('event_id', { length: 8 })
+			.notNull()
+			.references(() => events.id, { onDelete: 'cascade' }),
+		name: varchar('name', { length: 50 }).notNull(),
+		userId: varchar('user_id', { length: 100 }).notNull(),
+		createdAt: timestamp('created_at', { withTimezone: true }).defaultNow()
+	},
+	(t) => ({
+		idxRsvpsEventId: index('idx_rsvps_event_id').on(t.eventId),
+		idxRsvpsUserId: index('idx_rsvps_user_id').on(t.userId),
+		idxRsvpsCreatedAt: index('idx_rsvps_created_at').on(t.createdAt),
+		// UNIQUE(event_id, name) constraint
+		uqEventName: uniqueIndex('rsvps_event_id_name_unique').on(t.eventId, t.name)
+	})
+);
+
+// --- Relations (optional but handy for type safety)
+import { relations } from 'drizzle-orm';
+
+export const eventsRelations = relations(events, ({ many }) => ({
+	rsvps: many(rsvps)
+}));
+
+export const rsvpsRelations = relations(rsvps, ({ one }) => ({
+	event: one(events, {
+		fields: [rsvps.eventId],
+		references: [events.id]
+	})
+}));
+
+// --- Inferred types for use in the application
+export type Event = InferSelectModel<typeof events>;
+export type NewEvent = InferInsertModel<typeof events>;
+export type Rsvp = InferSelectModel<typeof rsvps>;
+export type NewRsvp = InferInsertModel<typeof rsvps>;
+
+// --- Additional utility types
+export type EventWithRsvps = Event & {
+	rsvps: Rsvp[];
+};
+
+export type CreateEventData = Omit<NewEvent, 'id' | 'createdAt' | 'updatedAt'>;
+export type CreateRsvpData = Omit<NewRsvp, 'id' | 'createdAt'>;