/**
 * TASK-0132 — SCIM email mapping rules (the `userName` → email policy).
 */
import { describe, expect, it } from "vitest";
import { ScimUsersService } from "../users.service.js";
import { ScimError } from "../scim-errors.js";

const svc = new ScimUsersService(null as never); // toEmail touches no deps

const org = (cfg: Record<string, unknown>) => ({ id: "org_1", scimConfig: cfg });

describe("toEmail — userName → email mapping", () => {
  it("userName with @ → verbatim (lowercased)", () => {
    expect(
      svc.toEmail({ userName: "Jane@Acme.test" } as never, org({}))
    ).toBe("jane@acme.test");
  });

  it("emails[0].value wins over userName", () => {
    expect(
      svc.toEmail(
        {
          userName: "jane.doe",
          emails: [{ value: "JANE.DOE@elsewhere.io" }]
        } as never,
        org({ userEmailDomain: "acme.test" })
      )
    ).toBe("jane.doe@elsewhere.io");
  });

  it("@-less userName + userEmailDomain → <userName>@<domain>", () => {
    expect(
      svc.toEmail({ userName: "jane.doe" } as never, org({ userEmailDomain: "Acme.test" }))
    ).toBe("jane.doe@acme.test");
  });

  it("emails[0] present but userName is the fallback source", () => {
    expect(
      svc.toEmail(
        {
          userName: "jane",
          emails: [{ value: "jane@acme.test" }, { value: "alt@acme.test" }]
        } as never,
        org({})
      )
    ).toBe("jane@acme.test");
  });

  it("@-less userName + NO userEmailDomain → 400 invalidValue", () => {
    try {
      svc.toEmail({ userName: "jane.doe" } as never, org({}));
      expect.unreachable("should have thrown");
    } catch (e) {
      expect(e).toBeInstanceOf(ScimError);
      expect((e as ScimError).status).toBe(400);
      expect((e as ScimError).scimType).toBe("invalidValue");
    }
  });
});