EmailOTP sending verification email for link on signup.

export const auth = betterAuth({
  database: drizzleAdapter(db, {
    provider: "pg",
    schema: schema,
    usePlural: true,
  }),
  emailAndPassword: {
    enabled: true,
    requireEmailVerification: true,
  },
  user: {
    additionalFields: {
      currentRole: { type: "string", input: true, returned: true },
    },
  },
  session: {
    cookieCache: { enabled: true, maxAge: 5 * 60 },
  },
  emailVerification: {
    sendOnSignUp: false,
    autoSignInAfterVerification: true,
    sendVerificationEmail: sendVerificationEmail,
    onEmailVerification: handleVerification,
  },
  plugins: [
    nextCookies(),
    emailOTP({
      sendVerificationOnSignUp: false,
      overrideDefaultEmailVerification: true,
      async sendVerificationOTP(data) {
        return await handleOTP(data);
      },
    }),
    customSession(handleCustomSession),
  ],
});

export const auth = betterAuth({
  database: drizzleAdapter(db, {
    provider: "pg",
    schema: schema,
    usePlural: true,
  }),
  emailAndPassword: {
    enabled: true,
    requireEmailVerification: true,
  },
  user: {
    additionalFields: {
      currentRole: { type: "string", input: true, returned: true },
    },
  },
  session: {
    cookieCache: { enabled: true, maxAge: 5 * 60 },
  },
  emailVerification: {
    sendOnSignUp: false,
    autoSignInAfterVerification: true,
    sendVerificationEmail: sendVerificationEmail,
    onEmailVerification: handleVerification,
  },
  plugins: [
    nextCookies(),
    emailOTP({
      sendVerificationOnSignUp: false,
      overrideDefaultEmailVerification: true,
      async sendVerificationOTP(data) {
        return await handleOTP(data);
      },
    }),
    customSession(handleCustomSession),
  ],
});