// @vitest-environment jsdom

import { render, screen, waitFor, within } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { describe, expect, expectTypeOf, it } from "vitest";
import { z } from "zod";
import {
  createMemoryRouter,
  matchRoutes,
  Outlet,
  RouterProvider,
} from "react-router-dom";

import { createAnonymousSessionAdapter } from "../../src/adapters/auth/external-session-adapter.ts";
import { createTechLogFeatureInstalledInput } from "../../src/features/tech-log/adapters/create-tech-log-feature-input.ts";
import { TECH_LOG_FEATURE_ID } from "../../src/features/tech-log/application/tech-log-feature-input.ts";
import { ApplicationProvider } from "../../src/presentation/providers/application-provider.tsx";
import {
  AppRouter,
  createGroupedRouteObjects,
} from "../../src/presentation/routes/app-router.tsx";
import { createTestApplication } from "../helpers/create-test-application.ts";
import { ROUTE_REGISTRY } from "../../src/features/installed-feature-contracts.ts";
import {
  ROUTE_CODECS,
  ROUTE_RUNTIME,
} from "../../src/features/installed-feature-runtimes.tsx";
import { LocaleProvider } from "../../src/presentation/i18n/index.ts";
import { SessionProvider } from "../../src/presentation/providers/session-provider.tsx";
import { ThemeProvider } from "../../src/presentation/providers/theme-provider.tsx";
import { useRouteInput } from "../../src/presentation/routes/route-input.tsx";

function StudioFallbackFixture() {
  const input = useRouteInput();
  return <h1>{String(input.params["*"])}</h1>;
}

const reviewFixtureCodecs = Object.freeze({
  ReviewFixtureParams: z
    .object({ reviewId: z.string().min(1) })
    .strict(),
  ReviewFixtureSearch: z
    .object({
      filter: z.preprocess(
        (value) => (Array.isArray(value) ? value[0] : value),
        z.string().trim().min(1).optional(),
      ),
    })
    .strip(),
});

const groupedFixtureCodecs = Object.freeze({
  none: ROUTE_CODECS.none,
  NotFoundSplat: ROUTE_CODECS.NotFoundSplat,
});

const reviewFixtureRegistry = Object.freeze({
  REVIEW_FIXTURE: Object.freeze({
    ...ROUTE_REGISTRY.TECH_LOG_HOME,
    routeId: "REVIEW_FIXTURE",
    path: "/review/:reviewId",
    paramsSchema: "ReviewFixtureParams",
    searchSchema: "ReviewFixtureSearch",
  }),
});

function ReviewRouteFixture() {
  const input = useRouteInput<"REVIEW_FIXTURE">();
  expectTypeOf(input.routeId).toEqualTypeOf<"REVIEW_FIXTURE">();
  return (
    <section>
      <h1>{input.routeId}</h1>
      <p data-testid="review-param">{String(input.params.reviewId)}</p>
      <p data-testid="review-search">{JSON.stringify(input.search)}</p>
    </section>
  );
}

const reviewFixtureRuntime = Object.freeze({
  REVIEW_FIXTURE: Object.freeze({
    moduleId: "review-fixture",
    Component: ReviewRouteFixture,
  }),
});

function compileTimeGroupedRouteContract() {
  // @ts-expect-error A grouped route composition must provide its codec registry.
  createGroupedRouteObjects(
    reviewFixtureRegistry,
    reviewFixtureRuntime,
    { PUBLIC: <Outlet />, STUDIO: <Outlet /> },
    "type-test-build",
  );
  return createGroupedRouteObjects(
    reviewFixtureRegistry,
    reviewFixtureRuntime,
    { PUBLIC: <Outlet />, STUDIO: <Outlet /> },
    "type-test-build",
    reviewFixtureCodecs,
  );
}
void compileTimeGroupedRouteContract;

function renderRouter() {
  const techLog = createTechLogFeatureInstalledInput();
  return render(
    <ApplicationProvider
      application={createTestApplication({
        session: createAnonymousSessionAdapter(),
        featureInputs: { [TECH_LOG_FEATURE_ID]: techLog.input },
      })}
    >
      <AppRouter />
    </ApplicationProvider>,
  );
}

describe("generic application router", () => {
  it("renders and canonicalizes an isolated non-installed route codec contract", async () => {
    expect(ROUTE_REGISTRY).not.toHaveProperty("REVIEW_FIXTURE");
    expect(ROUTE_CODECS).not.toHaveProperty("ReviewFixtureParams");
    expect(ROUTE_CODECS).not.toHaveProperty("ReviewFixtureSearch");

    const routes = createGroupedRouteObjects(
      reviewFixtureRegistry,
      reviewFixtureRuntime,
      { PUBLIC: <Outlet />, STUDIO: <Outlet /> },
      "test-build",
      reviewFixtureCodecs,
    );
    const router = createMemoryRouter(routes, {
      initialEntries: [
        "/review/non-empty?filter=%20first%20&filter=second&unknown=drop",
      ],
    });

    render(
      <ApplicationProvider application={createTestApplication()}>
        <LocaleProvider>
          <ThemeProvider>
            <SessionProvider>
              <RouterProvider router={router} />
            </SessionProvider>
          </ThemeProvider>
        </LocaleProvider>
      </ApplicationProvider>,
    );

    expect(
      await screen.findByRole("heading", { name: "REVIEW_FIXTURE" }),
    ).toBeVisible();
    expect(screen.getByTestId("review-param")).toHaveTextContent("non-empty");
    expect(screen.getByTestId("review-search")).toHaveTextContent(
      '{"filter":"first"}',
    );
    await waitFor(() =>
      expect(router.state.location).toMatchObject({
        pathname: "/review/non-empty",
        search: "?filter=first",
      }),
    );
  });

  it("assembles generic Public and Studio parents with Studio catch-all precedence", () => {
    const registry = {
      TECH_LOG_HOME: ROUTE_REGISTRY.TECH_LOG_HOME,
      STUDIO_FIXTURE: {
        ...ROUTE_REGISTRY.NOT_FOUND,
        routeId: "STUDIO_FIXTURE",
        path: "/studio/*",
        layoutGroup: "STUDIO" as const,
      },
      NOT_FOUND: ROUTE_REGISTRY.NOT_FOUND,
    };
    const runtime = {
      TECH_LOG_HOME: ROUTE_RUNTIME.TECH_LOG_HOME,
      STUDIO_FIXTURE: ROUTE_RUNTIME.NOT_FOUND,
      NOT_FOUND: ROUTE_RUNTIME.NOT_FOUND,
    };
    const routes = createGroupedRouteObjects(
      registry,
      runtime,
      {
        PUBLIC: <div data-layout="public" />,
        STUDIO: <div data-layout="studio" />,
      },
      "test-build",
      groupedFixtureCodecs,
    );

    expect(routes.map((route) => route.id)).toEqual([
      "STUDIO_LAYOUT",
      "PUBLIC_LAYOUT",
    ]);
    expect(
      matchRoutes(routes, "/studio/unknown")?.map((match) => match.route.id),
    ).toEqual(["STUDIO_LAYOUT", "STUDIO_FIXTURE"]);
    expect(
      matchRoutes(routes, "/publicly-unknown")?.map((match) => match.route.id),
    ).toEqual(["PUBLIC_LAYOUT", "NOT_FOUND"]);

    const installedRoutes = createGroupedRouteObjects(
      ROUTE_REGISTRY,
      ROUTE_RUNTIME,
      {
        PUBLIC: <div data-layout="public" />,
        STUDIO: <div data-layout="studio" />,
      },
      "test-build",
      groupedFixtureCodecs,
    );
    expect(installedRoutes[1]?.children?.at(-1)?.id).toBe("NOT_FOUND");
  });

  it("rejects a grouped registry whose leaf runtime is missing", () => {
    expect(() =>
      createGroupedRouteObjects(
        ROUTE_REGISTRY,
        {},
        {
          PUBLIC: <div data-layout="public" />,
          STUDIO: <div data-layout="studio" />,
        },
        "test-build",
        groupedFixtureCodecs,
      ),
    ).toThrow("Missing route runtime: TECH_LOG_HOME");
  });

  it("renders a non-installed Studio wildcard leaf without rewriting its URL", async () => {
    const routes = createGroupedRouteObjects(
      {
        STUDIO_FIXTURE: {
          ...ROUTE_REGISTRY.NOT_FOUND,
          routeId: "STUDIO_FIXTURE",
          path: "/studio/*",
          layoutGroup: "STUDIO",
        },
      },
      {
        STUDIO_FIXTURE: {
          moduleId: "studio-fixture",
          Component: StudioFallbackFixture,
        },
      },
      {
        PUBLIC: <Outlet />,
        STUDIO: (
          <section data-testid="studio-layout">
            <Outlet />
          </section>
        ),
      },
      "test-build",
      groupedFixtureCodecs,
    );
    const router = createMemoryRouter(routes, {
      initialEntries: ["/studio/unknown/path"],
    });

    render(
      <ApplicationProvider application={createTestApplication()}>
        <LocaleProvider>
          <ThemeProvider>
            <SessionProvider>
              <RouterProvider router={router} />
            </SessionProvider>
          </ThemeProvider>
        </LocaleProvider>
      </ApplicationProvider>,
    );

    expect(await screen.findByTestId("studio-layout")).toBeVisible();
    expect(
      await screen.findByRole("heading", { name: "unknown/path" }),
    ).toBeVisible();
    expect(router.state.location.pathname).toBe("/studio/unknown/path");
  });

  it("applies authorization from a non-installed route definition", async () => {
    const routes = createGroupedRouteObjects(
      {
        PROTECTED_FIXTURE: {
          ...ROUTE_REGISTRY.TECH_LOG_HOME,
          routeId: "PROTECTED_FIXTURE",
          path: "/private-fixture",
          access: "session-required",
          searchSchema: null,
        },
      },
      {
        PROTECTED_FIXTURE: {
          moduleId: "protected-fixture",
          Component: StudioFallbackFixture,
        },
      },
      {
        PUBLIC: <Outlet />,
        STUDIO: <Outlet />,
      },
      "test-build",
      groupedFixtureCodecs,
    );
    const router = createMemoryRouter(routes, {
      initialEntries: ["/private-fixture"],
    });

    render(
      <ApplicationProvider application={createTestApplication()}>
        <LocaleProvider>
          <ThemeProvider>
            <SessionProvider>
              <RouterProvider router={router} />
            </SessionProvider>
          </ThemeProvider>
        </LocaleProvider>
      </ApplicationProvider>,
    );

    expect(
      await screen.findByRole("heading", { name: "세션이 필요합니다." }),
    ).toBeVisible();
  });

  it("renders the installed TechLog home in the Public layout", async () => {
    const user = userEvent.setup();
    window.history.pushState({}, "", "/");
    renderRouter();

    expect(
      await screen.findByRole("heading", { name: "TechLog", level: 1 }),
    ).toBeVisible();
    expect(screen.getByRole("navigation", { name: "주요 탐색" })).toBeVisible();
    await user.click(
      within(screen.getByRole("navigation", { name: "주요 탐색" })).getByRole(
        "link",
        { name: "프로젝트" },
      ),
    );
    expect(
      await screen.findByRole("heading", { name: "프로젝트", level: 1 }),
    ).toBeVisible();
    expect(window.location.pathname).toBe("/projects");
  });

  it("keeps the unreachable client-side Public fallback inside its accessible shell", async () => {
    window.history.pushState({}, "", "/missing");
    renderRouter();

    expect(
      await screen.findByRole("heading", { name: "페이지를 찾을 수 없습니다." }),
    ).toBeVisible();
    expect(screen.getByRole("navigation", { name: "주요 탐색" })).toBeVisible();
    expect(screen.queryByText("Not Found", { exact: true })).not.toBeInTheDocument();
  });

  it("keeps Studio routes inside the persistent Studio layout", async () => {
    window.history.pushState({}, "", "/studio");
    renderRouter();

    expect(
      await screen.findByRole("heading", { name: "작업 흐름" }),
    ).toBeVisible();
    expect(screen.getByRole("navigation", { name: "Studio 주 탐색" })).toBeVisible();
    expect(screen.getByRole("link", { name: "공개 사이트 보기" })).toHaveAttribute(
      "href",
      "/",
    );
  });

  it("gives the Studio wildcard precedence over the Public not-found route", async () => {
    window.history.pushState({}, "", "/studio/missing");
    renderRouter();

    expect(
      await screen.findByRole("heading", {
        name: "Studio 화면을 찾을 수 없습니다",
      }),
    ).toBeVisible();
    expect(screen.getByRole("navigation", { name: "Studio 주 탐색" })).toBeVisible();
    expect(window.location.pathname).toBe("/studio/missing");
  });
});