🎉 init

server/database/schema.ts

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+import { sql } from 'drizzle-orm'
+import { index, integer, sqliteTable, text } from 'drizzle-orm/sqlite-core'
+
+export const pots = sqliteTable('pots', {
+  slug: text('slug').primaryKey(),
+  name: text('name').notNull(),
+  currency: text('currency').notNull(),
+  createdAt: integer('created_at').notNull().default(sql`(unixepoch())`),
+})
+
+export const participants = sqliteTable('participants', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  potSlug: text('pot_slug').notNull().references(() => pots.slug),
+  name: text('name').notNull(),
+  paymentLink: text('payment_link'),
+  createdAt: integer('created_at').notNull().default(sql`(unixepoch())`),
+}, table => [
+  index('participants_pot_slug_idx').on(table.potSlug),
+])
+
+export const expenses = sqliteTable('expenses', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  potSlug: text('pot_slug').notNull().references(() => pots.slug),
+  // 'payment' rows are settlements: payerId is who paid, and the single row
+  // in expenseParticipants is who received it — same shape as a one-person
+  // split expense, which is mathematically what a settlement is.
+  type: text('type').notNull().default('expense'),
+  description: text('description').notNull(),
+  amountCents: integer('amount_cents').notNull(),
+  payerId: integer('payer_id').notNull().references(() => participants.id),
+  createdAt: integer('created_at').notNull().default(sql`(unixepoch())`),
+}, table => [
+  index('expenses_pot_slug_idx').on(table.potSlug),
+])
+
+export const expenseParticipants = sqliteTable('expense_participants', {
+  expenseId: integer('expense_id').notNull().references(() => expenses.id),
+  participantId: integer('participant_id').notNull().references(() => participants.id),
+}, table => [
+  index('expense_participants_expense_id_idx').on(table.expenseId),
+])