import { describe, expect, it, afterEach } from "vitest"
import { render, screen, cleanup } from "@testing-library/react"
import userEvent from "@testing-library/user-event"

import { LinkChips } from "./LinkChips"
import type { LinkChipsProps } from "./types"

afterEach(() => {
  cleanup()
})

const defaultChips: LinkChipsProps["chips"] = [
  { title: "Hotels in Stockholm", url: "/hotels/stockholm" },
  { title: "Hotels in Copenhagen", url: "/hotels/copenhagen" },
  { title: "Hotels in Oslo", url: "/hotels/oslo" },
]

describe("LinkChips", () => {
  describe("rendering", () => {
    it("renders all chip links", () => {
      render(<LinkChips chips={defaultChips} />)
      expect(
        screen.getByRole("link", { name: "Hotels in Stockholm" })
      ).toBeTruthy()
      expect(
        screen.getByRole("link", { name: "Hotels in Copenhagen" })
      ).toBeTruthy()
      expect(screen.getByRole("link", { name: "Hotels in Oslo" })).toBeTruthy()
    })

    it("renders chip links with correct href attributes", () => {
      render(<LinkChips chips={defaultChips} />)
      expect(
        screen.getByRole("link", { name: "Hotels in Stockholm" }).getAttribute("href")
      ).toBe("/hotels/stockholm")
      expect(
        screen.getByRole("link", { name: "Hotels in Copenhagen" }).getAttribute("href")
      ).toBe("/hotels/copenhagen")
      expect(
        screen.getByRole("link", { name: "Hotels in Oslo" }).getAttribute("href")
      ).toBe("/hotels/oslo")
    })

    it("returns null when chips array is empty", () => {
      const { container } = render(<LinkChips chips={[]} />)
      expect(container.firstChild).toBeNull()
    })

    it("handles single chip", () => {
      const singleChip = [{ title: "View all hotels", url: "/hotels" }]
      render(<LinkChips chips={singleChip} />)
      expect(screen.getByRole("link", { name: "View all hotels" })).toBeTruthy()
      expect(
        screen.getByRole("link", { name: "View all hotels" }).getAttribute("href")
      ).toBe("/hotels")
    })
  })

  describe("keyboard navigation", () => {
    it("allows keyboard navigation between links", async () => {
      const user = userEvent.setup()
      render(<LinkChips chips={defaultChips} />)

      const firstLink = screen.getByRole("link", {
        name: "Hotels in Stockholm",
      })
      const secondLink = screen.getByRole("link", {
        name: "Hotels in Copenhagen",
      })

      await user.tab()
      expect(document.activeElement).toBe(firstLink)

      await user.tab()
      expect(document.activeElement).toBe(secondLink)
    })
  })

  describe("edge cases", () => {
    it("handles chips with duplicate titles but different URLs", () => {
      const duplicateTitles: LinkChipsProps["chips"] = [
        { title: "Hotels", url: "/hotels/stockholm" },
        { title: "Hotels", url: "/hotels/copenhagen" },
      ]
      render(<LinkChips chips={duplicateTitles} />)
      const links = screen.getAllByRole("link", { name: "Hotels" })
      expect(links).toHaveLength(2)
      expect(links[0].getAttribute("href")).toBe("/hotels/stockholm")
      expect(links[1].getAttribute("href")).toBe("/hotels/copenhagen")
    })
  })
})
