email

import { describe, it, expect } from "vitest";
import nodemailer from "nodemailer";
import { sendEmail } from "../smtp";

// Uses Ethereal — a free fake SMTP service that accepts mail without delivering it.
// No credentials needed: nodemailer.createTestAccount() provisions a throw-away account.

describe("sendEmail (Ethereal SMTP)", () => {
  it("sends a plain email and returns a messageId", async () => {
    const testAccount = await nodemailer.createTestAccount();

    const messageId = await sendEmail(
      {
        host: testAccount.smtp.host,
        port: testAccount.smtp.port,
        user: testAccount.user,
        password: testAccount.pass,
      },
      {
        from: testAccount.user,
        to: testAccount.user,
        subject: "Test email from email-plugin",
        body: "Hello from the email plugin test suite.",
      }
    );

    expect(typeof messageId).toBe("string");
    expect(messageId.length).toBeGreaterThan(0);
    console.log("Preview URL:", nodemailer.getTestMessageUrl({ messageId, envelope: { from: testAccount.user, to: [testAccount.user] } } as any));
  }, 15_000);

  it("sends a reply with In-Reply-To header", async () => {
    const testAccount = await nodemailer.createTestAccount();

    const messageId = await sendEmail(
      {
        host: testAccount.smtp.host,
        port: testAccount.smtp.port,
        user: testAccount.user,
        password: testAccount.pass,
      },
      {
        from: testAccount.user,
        to: testAccount.user,
        subject: "Re: Original subject",
        body: "This is a reply.",
        inReplyTo: "<original-message-id@test.com>",
        references: "<original-message-id@test.com>",
      }
    );

    expect(messageId).toBeTruthy();
  }, 15_000);

  it("sends with CC", async () => {
    const testAccount = await nodemailer.createTestAccount();

    const messageId = await sendEmail(
      {
        host: testAccount.smtp.host,
        port: testAccount.smtp.port,
        user: testAccount.user,
        password: testAccount.pass,
      },
      {
        from: testAccount.user,
        to: testAccount.user,
        cc: testAccount.user,
        subject: "CC test",
        body: "Testing CC field.",
      }
    );

    expect(messageId).toBeTruthy();
  }, 15_000);

  it("throws on bad credentials", async () => {
    await expect(
      sendEmail(
        { host: "smtp.ethereal.email", port: 587, user: "bad@user.com", password: "wrongpass" },
        { from: "bad@user.com", to: "test@test.com", subject: "fail", body: "fail" }
      )
    ).rejects.toThrow();
  }, 15_000);
});