import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
import { createRouter, createMemoryHistory } from 'vue-router'
import {
  getUmamiConfig,
  initUmamiAnalytics,
  trackUmamiPageview,
} from '@/utils/umami'

describe('umami', () => {
  beforeEach(() => {
    document.head.innerHTML = ''
    delete window.umami
  })

  afterEach(() => {
    vi.unstubAllEnvs()
  })

  it('returns null when website id is unset', () => {
    vi.stubEnv('VITE_UMAMI_WEBSITE_ID', '')
    expect(getUmamiConfig()).toBeNull()
  })

  it('returns config when website id is set', () => {
    vi.stubEnv('VITE_UMAMI_WEBSITE_ID', '11111111-2222-3333-4444-555555555555')
    vi.stubEnv('VITE_UMAMI_SCRIPT_URL', '')
    expect(getUmamiConfig()).toEqual({
      websiteId: '11111111-2222-3333-4444-555555555555',
      scriptUrl: 'https://analytics.bilhej.se/script.js',
    })
  })

  it('uses custom script url when provided', () => {
    vi.stubEnv('VITE_UMAMI_WEBSITE_ID', 'test-id')
    vi.stubEnv('VITE_UMAMI_SCRIPT_URL', 'https://example.test/script.js')
    expect(getUmamiConfig()?.scriptUrl).toBe('https://example.test/script.js')
  })

  it('does not inject script when website id is unset', () => {
    vi.stubEnv('VITE_UMAMI_WEBSITE_ID', '')
    const router = createRouter({
      history: createMemoryHistory(),
      routes: [{ path: '/', component: { template: '<div />' } }],
    })
    initUmamiAnalytics(router)
    expect(document.querySelector('script[data-website-id]')).toBeNull()
  })

  it('injects script with auto-track disabled when configured', () => {
    vi.stubEnv('VITE_UMAMI_WEBSITE_ID', 'test-id')
    const router = createRouter({
      history: createMemoryHistory(),
      routes: [{ path: '/', component: { template: '<div />' } }],
    })
    initUmamiAnalytics(router)
    const script = document.querySelector('script[data-website-id]')
    expect(script?.getAttribute('data-website-id')).toBe('test-id')
    expect(script?.getAttribute('data-auto-track')).toBe('false')
    expect(script?.getAttribute('src')).toContain('script.js')
  })

  it('trackUmamiPageview forwards url to umami', () => {
    const track = vi.fn()
    window.umami = { track }
    trackUmamiPageview('/orders')
    expect(track).toHaveBeenCalledOnce()
    const mapper = track.mock.calls[0][0] as (
      props: Record<string, unknown>,
    ) => Record<string, unknown>
    expect(mapper({ referrer: 'x' })).toEqual({ referrer: 'x', url: '/orders' })
  })
})