import { fireEvent, render, screen, waitFor } from "@testing-library/react"
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest"

import type { Category } from "@/types/navigation"

import { AppShell } from "./app-shell"

const categories: Category[] = [
  { id: "dev", title: "开发工具", description: "开发", icon: "code", sort: 10 },
]

describe("AppShell", () => {
  beforeEach(() => window.localStorage.clear())
  afterEach(() => vi.restoreAllMocks())

  it("切换侧栏并持久化状态", () => {
    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    const toggle = screen.getByRole("button", { name: "折叠侧边栏" })
    fireEvent.click(toggle)

    expect(screen.getByTestId("app-shell")).toHaveAttribute(
      "data-sidebar-collapsed",
      "true",
    )
    expect(window.localStorage.getItem("polaris.sidebar.collapsed")).toBe(
      "true",
    )
  })

  it("hydration 后恢复持久化状态", async () => {
    window.localStorage.setItem("polaris.sidebar.collapsed", "true")
    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    await waitFor(() => {
      expect(screen.getByTestId("app-shell")).toHaveAttribute(
        "data-sidebar-collapsed",
        "true",
      )
      expect(screen.getByTestId("app-shell")).toHaveAttribute(
        "data-hydrated",
        "true",
      )
    })
  })

  it("写入失败时内存偏好优先于旧持久化值", () => {
    window.localStorage.setItem("polaris.sidebar.collapsed", "false")
    vi.spyOn(Storage.prototype, "setItem").mockImplementation(() => {
      throw new Error("storage unavailable")
    })

    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    fireEvent.click(screen.getByRole("button", { name: "折叠侧边栏" }))
    expect(screen.getByTestId("app-shell")).toHaveAttribute(
      "data-sidebar-collapsed",
      "true",
    )
  })

  it("忽略 sessionStorage 的同名 storage 事件", () => {
    window.localStorage.setItem("polaris.sidebar.collapsed", "false")
    vi.spyOn(Storage.prototype, "setItem").mockImplementation(() => {
      throw new Error("storage unavailable")
    })

    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    fireEvent.click(screen.getByRole("button", { name: "折叠侧边栏" }))
    fireEvent(
      window,
      new StorageEvent("storage", {
        key: "polaris.sidebar.collapsed",
        storageArea: window.sessionStorage,
      }),
    )

    expect(screen.getByTestId("app-shell")).toHaveAttribute(
      "data-sidebar-collapsed",
      "true",
    )
  })

  it("存储不可用时仍保留当前会话内交互", () => {
    vi.spyOn(Storage.prototype, "getItem").mockImplementation(() => {
      throw new Error("storage unavailable")
    })
    vi.spyOn(Storage.prototype, "setItem").mockImplementation(() => {
      throw new Error("storage unavailable")
    })

    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    fireEvent.click(screen.getByRole("button", { name: "折叠侧边栏" }))
    expect(screen.getByTestId("app-shell")).toHaveAttribute(
      "data-sidebar-collapsed",
      "true",
    )
  })

  it("首页默认选中并启用分类链接", () => {
    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
      >
        <main>首页内容</main>
      </AppShell>,
    )

    expect(screen.getByRole("link", { name: "首页" })).toHaveAttribute(
      "aria-current",
      "page",
    )
    expect(screen.getByRole("link", { name: "开发工具" })).toHaveAttribute(
      "href",
      "/categories/dev",
    )
  })

  it("分类页只选中当前分类", () => {
    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={false}
        activeCategoryId="dev"
      >
        <main>分类内容</main>
      </AppShell>,
    )

    expect(screen.getByRole("link", { name: "首页" })).not.toHaveAttribute(
      "aria-current",
    )
    expect(screen.getByRole("link", { name: "开发工具" })).toHaveAttribute(
      "aria-current",
      "page",
    )
  })

  it("折叠状态仍保留分类链接的可访问名称", () => {
    render(
      <AppShell
        categories={categories}
        siteName="Polaris"
        defaultCollapsed={true}
        activeCategoryId="dev"
      >
        <main>分类内容</main>
      </AppShell>,
    )

    expect(screen.getByRole("link", { name: "开发工具" })).toHaveAttribute(
      "aria-current",
      "page",
    )
  })
})