import { useState } from "react";
import "../../src/i18n/i18n";
import { PasswordInput } from "../../src/components/ui/PasswordInput";

// Mounts PasswordInput in isolation (no form, no router, no backend) — the
// same "generic component test" posture as CheckboxOption.cy.tsx. Needs
// `../../src/i18n/i18n` imported for its side effect: unlike Checkbox/Radio,
// this component calls `useTranslation()` for the eye button's aria-label,
// and with no <I18nextProvider> in the tree it falls back to that default
// instance (see TechStepCorrectionPopover.cy.tsx for the same note).

const SHOW_LABEL = "Afficher le mot de passe";
const HIDE_LABEL = "Masquer le mot de passe";

/**
 * Controlled wrapper — PasswordInput holds no text state of its own, so a
 * real caller (LoginPage, SignupPage) always owns the value. `onSpy` lets a
 * test assert on what each change reports.
 */
function Wrapper({ onSpy }: { onSpy?: (value: string) => void }) {
  const [value, setValue] = useState("");
  return (
    <PasswordInput
      id="password"
      value={value}
      onChange={(next) => {
        setValue(next);
        onSpy?.(next);
      }}
      autoComplete="current-password"
    />
  );
}

describe("PasswordInput", () => {
  it("renders a masked password field by default", () => {
    cy.mount(<Wrapper />);
    cy.get("input#password").should("have.attr", "type", "password");
  });

  it("forwards id and autoComplete to the native input", () => {
    cy.mount(<Wrapper />);
    cy.get("input#password").should("have.attr", "autocomplete", "current-password");
  });

  it("reveals the text when the eye is clicked, then re-masks it on a second click", () => {
    cy.mount(<Wrapper />);
    cy.get("input#password").type("hunter2").should("have.attr", "type", "password");

    cy.get("button.password-input__toggle").click();
    cy.get("input#password").should("have.attr", "type", "text").and("have.value", "hunter2");

    cy.get("button.password-input__toggle").click();
    cy.get("input#password").should("have.attr", "type", "password").and("have.value", "hunter2");
  });

  it("labels the toggle with the action the next click performs, and exposes state via aria-pressed", () => {
    cy.mount(<Wrapper />);
    cy.get("button.password-input__toggle")
      .should("have.attr", "aria-label", SHOW_LABEL)
      .and("have.attr", "aria-pressed", "false");

    cy.get("button.password-input__toggle").click();
    cy.get("button.password-input__toggle")
      .should("have.attr", "aria-label", HIDE_LABEL)
      .and("have.attr", "aria-pressed", "true");
  });

  it("is a controlled input — it shows the parent's value and reports every change", () => {
    const onSpy = cy.stub().as("onSpy");
    cy.mount(<Wrapper onSpy={onSpy} />);

    cy.get("input#password").type("abc");
    cy.get("input#password").should("have.value", "abc");
    cy.get("@onSpy").should("have.been.calledWith", "abc");
  });

  it("does not submit a surrounding form when the eye is clicked — the toggle is a plain button", () => {
    const onSubmit = cy.stub().as("onSubmit");
    cy.mount(
      <form
        onSubmit={(e) => {
          e.preventDefault();
          onSubmit();
        }}
      >
        <Wrapper />
        <button type="submit">Go</button>
      </form>,
    );

    cy.get("button.password-input__toggle").click();
    cy.get("@onSubmit").should("not.have.been.called");
  });

  it("starts hidden again on a fresh mount — visibility is never persisted", () => {
    cy.mount(<Wrapper />);
    cy.get("button.password-input__toggle").click();
    cy.get("input#password").should("have.attr", "type", "text");

    // A brand-new mount, as if the visitor navigated back to the page later.
    cy.mount(<Wrapper />);
    cy.get("input#password").should("have.attr", "type", "password");
  });
});