import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
import { fireEvent, screen, waitFor } from "@testing-library/react";
import { describe, expect, it, vi } from "vitest";
import { StateSelect } from "@/app/(protected)/locations/_components/state-select";
import {
  locationDefaultValues,
  locationSchema,
  type LocationFormValues,
} from "@/domain/locations/schemas/location-schema";
import { renderWithProviders } from "@/test/test-utils";

function StateSelectHarness({
  onSubmit = vi.fn(),
}: {
  onSubmit?: (values: LocationFormValues) => void;
}) {
  const {
    control,
    handleSubmit,
    formState: { errors },
  } = useForm<LocationFormValues>({
    resolver: zodResolver(locationSchema),
    defaultValues: {
      ...locationDefaultValues,
      name: "Dallas DC",
      address: "3811 Distribution Dr",
      city: "Dallas",
      zipCode: "70068",
      contacts: [{ name: "Jane", phone: "(421) 433-0032" }],
      contactEmail: "jane@example.com",
      accountId: "7",
    },
  });

  return (
    <form onSubmit={handleSubmit(onSubmit)} noValidate>
      <StateSelect control={control} error={errors.state} />
      <button type="submit">Save</button>
    </form>
  );
}

function openOptions() {
  const input = screen.getByRole("combobox");
  input.focus();
  fireEvent.mouseDown(input);
  return input;
}

describe("StateSelect", () => {
  it("starts empty with no implicit default state", () => {
    renderWithProviders(<StateSelectHarness />, { withAuth: false });

    expect(screen.getByRole("combobox")).toHaveValue("");
    expect(screen.queryByText("Area: ")).not.toBeInTheDocument();
  });

  it("shows searchable Name (CODE) options and no free-text entries", async () => {
    renderWithProviders(<StateSelectHarness />, { withAuth: false });
    const input = openOptions();

    const options = await screen.findAllByRole("option");
    expect(options).toHaveLength(50);
    expect(screen.getByRole("option", { name: "Texas (TX)" })).toBeInTheDocument();
    expect(screen.getByRole("option", { name: "California (CA)" })).toBeInTheDocument();

    fireEvent.change(input, { target: { value: "mass" } });
    await screen.findAllByRole("option");
    expect(screen.getByRole("option", { name: "Massachusetts (MA)" })).toBeInTheDocument();
    expect(screen.getAllByRole("option")).toHaveLength(1);

    fireEvent.change(input, { target: { value: "Republic of Texas" } });
    expect(screen.queryByRole("option")).not.toBeInTheDocument();
  });

  it("selects by search and shows the Area helper immediately", async () => {
    const onSubmit = vi.fn();
    renderWithProviders(<StateSelectHarness onSubmit={onSubmit} />, { withAuth: false });
    const input = openOptions();

    fireEvent.change(input, { target: { value: "texas" } });
    fireEvent.click(await screen.findByRole("option", { name: "Texas (TX)" }));

    expect(input).toHaveValue("Texas (TX)");
    expect(screen.getByText("Area: West")).toBeInTheDocument();

    fireEvent.click(screen.getByRole("button", { name: "Save" }));
    await waitFor(() => {
      expect(onSubmit).toHaveBeenCalledWith(
        expect.objectContaining({ state: "TX" }),
        expect.anything(),
      );
    });
  });

  it("is keyboard accessible (arrow + enter selection)", async () => {
    const onSubmit = vi.fn();
    renderWithProviders(<StateSelectHarness onSubmit={onSubmit} />, { withAuth: false });
    const input = screen.getByRole("combobox");

    input.focus();
    fireEvent.change(input, { target: { value: "ohio" } });
    fireEvent.keyDown(input, { key: "ArrowDown" });
    fireEvent.keyDown(input, { key: "Enter" });

    expect(input).toHaveValue("Ohio (OH)");
    expect(screen.getByText("Area: Central")).toBeInTheDocument();

    fireEvent.click(screen.getByRole("button", { name: "Save" }));
    await waitFor(() => {
      expect(onSubmit).toHaveBeenCalledWith(
        expect.objectContaining({ state: "OH" }),
        expect.anything(),
      );
    });
  });

  it("requires a state and rejects free text on submit", async () => {
    const onSubmit = vi.fn();
    renderWithProviders(<StateSelectHarness onSubmit={onSubmit} />, { withAuth: false });

    fireEvent.click(screen.getByRole("button", { name: "Save" }));
    expect(await screen.findByText("State is required")).toBeInTheDocument();
    expect(onSubmit).not.toHaveBeenCalled();

    const input = screen.getByRole("combobox");
    input.focus();
    fireEvent.change(input, { target: { value: "NotAState" } });
    fireEvent.keyDown(input, { key: "Enter" });
    fireEvent.click(screen.getByRole("button", { name: "Save" }));

    await screen.findByText("State is required");
    expect(onSubmit).not.toHaveBeenCalled();
  });
});