// Component behavior in both worlds: plain string rendering without a DOM,
// and mount/update/morph/proxy semantics inside happy-dom.

import { test, before } from 'node:test'
import assert from 'node:assert'
import { Window } from 'happy-dom'

import serverHtml from '@uhhm/buuh-html/server'

test('renders via createElement on the server (no window)', async () => {
  const { default: Component } = await import('../index.js')

  class Title extends Component {
    createElement (text) {
      return serverHtml`<h1>${text}</h1>`
    }

    update () { return false }
  }

  const res = new Title().render('hello')
  assert.strictEqual(res.toString(), '<h1>hello</h1>')
})

test('browser: render, mount, update morphs in place, proxy stands in', async () => {
  const win = new Window()
  globalThis.window = win
  globalThis.document = win.document
  // module registry caches per specifier; component/index.js re-evaluates
  // _hasWindow per instance, so importing after globals are set is enough
  const { default: Component } = await import('../index.js?browser')
  const { default: html } = await import('@uhhm/buuh-html/browser')
  const { default: morph } = await import('@uhhm/buuh-html/morph')

  class Counter extends Component {
    createElement (n) {
      this.n = n
      return html`<div>count ${n}</div>`
    }

    update (n) {
      return n !== this.n
    }
  }

  const counter = new Counter('counter')

  const el = counter.render(0)
  assert.ok(el.getAttribute('data-nanocomponent'), 'root node branded')
  document.body.appendChild(el)
  assert.strictEqual(counter.element, el, 'element getter finds mounted node')

  // unchanged args: update() false, no morph, proxy returned
  const proxy = counter.render(0)
  assert.ok(proxy.hasAttribute('data-proxy'), 'returns proxy while mounted')
  assert.ok(proxy.isSameNode(el), 'proxy claims identity of the mounted node')

  // changed args: update() true, mounted node morphs in place
  counter.render(1)
  assert.strictEqual(el.textContent, 'count 1', 'mounted node updated in place')

  // and the proxy plays correctly with nanomorph in a parent view
  const parent = (n) => {
    const inner = counter.render(n)
    return html`<main>${inner}</main>`
  }
  const treeA = parent(1)
  // simulate first full-page render: mounted component moves into the tree
  assert.ok(treeA.querySelector('[data-proxy]') || treeA.contains(el))

  document.body.removeChild(el)
})