import { describe, it, expect } from 'vitest'
import { readFileSync } from 'node:fs'
import { fileURLToPath } from 'node:url'

// The group vocabulary is split across four files and there is no runtime that
// checks they agree. When they disagree the failure is SILENT: a panel in a
// group nothing renders is fetched, held, and shown on no tab, with nothing
// logged. That has eaten cards twice - tracked services moving out of
// 'actions', and the 'metrics' to 'monitors' rename.
//
// So this reads the sources and asserts the vocabularies match. It is a source
// check rather than a behaviour check because RENDERED_GROUPS is a module-local
// constant in the .vue file with no export to assert against.

function read(relative) {
  return readFileSync(fileURLToPath(new URL(relative, import.meta.url)), 'utf8')
}

function renderedGroups() {
  const source = read('./PluginAssetPanels.vue')
  const match = source.match(/const RENDERED_GROUPS = \[([^\]]*)\]/)
  if (!match) throw new Error('RENDERED_GROUPS not found in PluginAssetPanels.vue')
  return match[1].split(',')
    .map((entry) => entry.trim().replace(/^'|'$/g, ''))
    .filter(Boolean)
}

function pcDetailSource() {
  return read('../../../plugins/computers/frontend/views/PCDetail.vue')
}

describe('panel group vocabulary', () => {
  it('renders a group for every tab PCDetail offers', () => {
    const groups = renderedGroups()
    const source = pcDetailSource()
    const tabKeys = [...source.matchAll(/tabs\.push\(\{\s*key:\s*'([a-z]+)'/g)]
      .map((match) => match[1])

    expect(tabKeys.length).toBeGreaterThan(0)
    for (const key of tabKeys) {
      expect(groups).toContain(key)
    }
  })

  it('gives every rendered group somewhere to actually show', () => {
    // A group in RENDERED_GROUPS with no v-show block is the mirror failure:
    // the panel is kept rather than dropped, but still appears nowhere.
    const source = pcDetailSource()
    for (const group of renderedGroups()) {
      expect(source).toContain(`activegroup === '${group}'`)
    }
  })

  it('keeps the service/process split wired end to end', () => {
    // Pins the specific split rather than only the general rule, so removing
    // the tab is a deliberate edit to this test and not a silent regression.
    const source = pcDetailSource()

    expect(renderedGroups()).toContain('serviceprocess')
    expect(source).toContain("key: 'serviceprocess'")
    expect(source).toContain("group=\"serviceprocess\"")
  })

  it('still renders the system monitors group after the rename', () => {
    // The rename is label-only; the group key must not drift with it.
    expect(renderedGroups()).toContain('monitors')
    expect(pcDetailSource()).toContain("label: 'System Monitors'")
  })
})