import { describe, expect, it } from "vitest";

import {
  filterSavedIdentities,
  identityFilterLabel,
  resolveCustomIdentityKind,
  sortSavedIdentities,
} from "./identity-helper";

const identities = [
  { value: "alpha@example.com", type: "email" as const, lastUsed: 10, useCount: 2 },
  { value: "beta", type: "username" as const, lastUsed: 30, useCount: 1 },
  { value: "gamma@example.com", type: "email" as const, lastUsed: 30, useCount: 4 },
  { value: "delta", type: "username" as const, lastUsed: 5, useCount: 9 },
];

describe("identity-helper", () => {
  it("sorts identities by most recently used first", () => {
    expect(sortSavedIdentities(identities).map((identity) => identity.value)).toEqual([
      "gamma@example.com",
      "beta",
      "alpha@example.com",
      "delta",
    ]);
  });

  it("filters identities by type and search text", () => {
    expect(filterSavedIdentities(identities, "alpha", "both").map((identity) => identity.value)).toEqual([
      "alpha@example.com",
    ]);
    expect(filterSavedIdentities(identities, "", "email").map((identity) => identity.value)).toEqual([
      "gamma@example.com",
      "alpha@example.com",
    ]);
    expect(filterSavedIdentities(identities, "", "username").map((identity) => identity.value)).toEqual([
      "beta",
      "delta",
    ]);
  });

  it("treats no-match custom identity as username unless the field or text says email", () => {
    expect(resolveCustomIdentityKind("june", "both", "username")).toBe("username");
    expect(resolveCustomIdentityKind("june@example.com", "both", "username")).toBe("email");
    expect(resolveCustomIdentityKind("june", "email", "username")).toBe("email");
    expect(resolveCustomIdentityKind("june", "username", "email")).toBe("username");
  });

  it("labels the filter modes clearly", () => {
    expect(identityFilterLabel("both")).toBe("Both");
    expect(identityFilterLabel("email")).toBe("Emails");
    expect(identityFilterLabel("username")).toBe("Usernames");
  });
});