Initial API scaffold: Elysia + Bun + Drizzle + BetterAuth + LangChain

src/db/schema.ts

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+import { pgTable, text, timestamp, uuid, boolean, jsonb, integer } from 'drizzle-orm/pg-core';
+import { relations } from 'drizzle-orm';
+
+// Users table (managed by BetterAuth, but we define it for relations)
+export const users = pgTable('users', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  email: text('email').notNull().unique(),
+  name: text('name').notNull(),
+  emailVerified: boolean('email_verified').default(false),
+  image: text('image'),
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+  updatedAt: timestamp('updated_at').defaultNow().notNull(),
+});
+
+// BetterAuth session table
+export const sessions = pgTable('sessions', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id').references(() => users.id, { onDelete: 'cascade' }).notNull(),
+  token: text('token').notNull().unique(),
+  expiresAt: timestamp('expires_at').notNull(),
+  ipAddress: text('ip_address'),
+  userAgent: text('user_agent'),
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+  updatedAt: timestamp('updated_at').defaultNow().notNull(),
+});
+
+// BetterAuth account table (for OAuth providers)
+export const accounts = pgTable('accounts', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id').references(() => users.id, { onDelete: 'cascade' }).notNull(),
+  accountId: text('account_id').notNull(),
+  providerId: text('provider_id').notNull(),
+  accessToken: text('access_token'),
+  refreshToken: text('refresh_token'),
+  accessTokenExpiresAt: timestamp('access_token_expires_at'),
+  refreshTokenExpiresAt: timestamp('refresh_token_expires_at'),
+  scope: text('scope'),
+  idToken: text('id_token'),
+  password: text('password'),
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+  updatedAt: timestamp('updated_at').defaultNow().notNull(),
+});
+
+// BetterAuth verification table
+export const verifications = pgTable('verifications', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  identifier: text('identifier').notNull(),
+  value: text('value').notNull(),
+  expiresAt: timestamp('expires_at').notNull(),
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+  updatedAt: timestamp('updated_at').defaultNow().notNull(),
+});
+
+// Clients table
+export const clients = pgTable('clients', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id').references(() => users.id, { onDelete: 'cascade' }).notNull(),
+  
+  // Basic info
+  firstName: text('first_name').notNull(),
+  lastName: text('last_name').notNull(),
+  email: text('email'),
+  phone: text('phone'),
+  
+  // Address
+  street: text('street'),
+  city: text('city'),
+  state: text('state'),
+  zip: text('zip'),
+  
+  // Professional
+  company: text('company'),
+  role: text('role'),
+  industry: text('industry'),
+  
+  // Personal
+  birthday: timestamp('birthday'),
+  anniversary: timestamp('anniversary'),
+  interests: jsonb('interests').$type<string[]>().default([]),
+  family: jsonb('family').$type<{ spouse?: string; children?: string[] }>(),
+  notes: text('notes'),
+  
+  // Organization
+  tags: jsonb('tags').$type<string[]>().default([]),
+  
+  // Tracking
+  lastContactedAt: timestamp('last_contacted_at'),
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+  updatedAt: timestamp('updated_at').defaultNow().notNull(),
+});
+
+// Events table (birthdays, anniversaries, follow-ups)
+export const events = pgTable('events', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id').references(() => users.id, { onDelete: 'cascade' }).notNull(),
+  clientId: uuid('client_id').references(() => clients.id, { onDelete: 'cascade' }).notNull(),
+  
+  type: text('type').notNull(), // 'birthday' | 'anniversary' | 'followup' | 'custom'
+  title: text('title').notNull(),
+  date: timestamp('date').notNull(),
+  recurring: boolean('recurring').default(false),
+  reminderDays: integer('reminder_days').default(7),
+  lastTriggered: timestamp('last_triggered'),
+  
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+});
+
+// Communications table (emails, messages)
+export const communications = pgTable('communications', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id').references(() => users.id, { onDelete: 'cascade' }).notNull(),
+  clientId: uuid('client_id').references(() => clients.id, { onDelete: 'cascade' }).notNull(),
+  
+  type: text('type').notNull(), // 'email' | 'birthday' | 'followup'
+  subject: text('subject'),
+  content: text('content').notNull(),
+  aiGenerated: boolean('ai_generated').default(false),
+  aiModel: text('ai_model'), // Which model was used
+  status: text('status').default('draft'), // 'draft' | 'approved' | 'sent'
+  sentAt: timestamp('sent_at'),
+  
+  createdAt: timestamp('created_at').defaultNow().notNull(),
+});
+
+// Relations
+export const usersRelations = relations(users, ({ many }) => ({
+  clients: many(clients),
+  events: many(events),
+  communications: many(communications),
+  sessions: many(sessions),
+  accounts: many(accounts),
+}));
+
+export const clientsRelations = relations(clients, ({ one, many }) => ({
+  user: one(users, {
+    fields: [clients.userId],
+    references: [users.id],
+  }),
+  events: many(events),
+  communications: many(communications),
+}));
+
+export const eventsRelations = relations(events, ({ one }) => ({
+  user: one(users, {
+    fields: [events.userId],
+    references: [users.id],
+  }),
+  client: one(clients, {
+    fields: [events.clientId],
+    references: [clients.id],
+  }),
+}));
+
+export const communicationsRelations = relations(communications, ({ one }) => ({
+  user: one(users, {
+    fields: [communications.userId],
+    references: [users.id],
+  }),
+  client: one(clients, {
+    fields: [communications.clientId],
+    references: [clients.id],
+  }),
+}));