import { describe, expect, it } from "vitest";
import {
  booleanEnv,
  csvEnv,
  optionalEnv,
  requiredEnv,
  trustedOrigins,
  type Env,
} from "../src/env";
import { buildAuthEmail, sendEmail } from "../src/email";
import { createAuthPlugins } from "../src/plugins";

const env: Env = {
  BETTER_AUTH_URL: "http://localhost:8788",
  TRUSTED_ORIGINS: " http://localhost:8787, https://app.example.com ",
};

describe("auth env helpers", () => {
  it("parses trusted origins from comma-separated env", () => {
    expect(trustedOrigins(env)).toEqual(["http://localhost:8787", "https://app.example.com"]);
  });

  it("parses optional csv values", () => {
    expect(csvEnv(" google, github ,, ")).toEqual(["google", "github"]);
  });

  it("parses boolean env values", () => {
    expect(booleanEnv("true")).toBe(true);
    expect(booleanEnv("1")).toBe(true);
    expect(booleanEnv("false")).toBe(false);
    expect(booleanEnv(undefined)).toBe(false);
  });

  it("throws for missing required env", () => {
    expect(() => requiredEnv({}, "MAIL_FROM")).toThrow("Missing required env: MAIL_FROM");
  });

  it("returns optional env values", () => {
    expect(optionalEnv({ MAIL_FROM: "noreply@example.com" }, "MAIL_FROM")).toBe(
      "noreply@example.com",
    );
    expect(optionalEnv({}, "MAIL_FROM")).toBeUndefined();
  });
});

describe("auth email adapter", () => {
  it("builds a verification email", () => {
    const message = buildAuthEmail({
      kind: "verify-email",
      to: "user@example.com",
      url: "https://auth.example.com/verify",
    });
    expect(message.subject).toBe("Verify your email");
    expect(message.to).toBe("user@example.com");
    expect(message.text).toContain("https://auth.example.com/verify");
  });

  it("fails clearly when no mail provider is configured", async () => {
    await expect(
      sendEmail(
        {
          BETTER_AUTH_URL: "http://localhost:8788",
          TRUSTED_ORIGINS: "http://localhost:8787",
        },
        {
          to: "user@example.com",
          subject: "Test",
          text: "Test",
        },
      ),
    ).rejects.toThrow("MAIL_PROVIDER is not configured");
  });
});

describe("auth plugins", () => {
  it("does not enable captcha without provider config", () => {
    const plugins = createAuthPlugins({
      BETTER_AUTH_URL: "http://localhost:8788",
      TRUSTED_ORIGINS: "http://localhost:8787",
    });
    expect(plugins.map((plugin) => plugin.id)).not.toContain("captcha");
  });

  it("enables captcha when Cloudflare Turnstile config is present", () => {
    const plugins = createAuthPlugins({
      BETTER_AUTH_URL: "http://localhost:8788",
      TRUSTED_ORIGINS: "http://localhost:8787",
      CAPTCHA_PROVIDER: "cloudflare-turnstile",
      CAPTCHA_SECRET_KEY: "secret",
    });
    expect(plugins.map((plugin) => plugin.id)).toContain("captcha");
  });
});