import assert from 'node:assert/strict'
import { describe, it } from 'node:test'
import {
  OA_APP_ICON_COLOR_PAIRS,
  OA_APP_EP_ICON_NAMES,
  buildEpIconUrl,
  parseEpIconUrl,
  resolveOaAppIcon,
  pickRandomOaAppIconUrl,
  iconFgFromBg,
  isEpIconUrl
} from './oa-app-icons'

describe('oa-app-icons palette', () => {
  it('has exactly 8 pairs and no gray/slate', () => {
    assert.equal(OA_APP_ICON_COLOR_PAIRS.length, 8)
    for (const p of OA_APP_ICON_COLOR_PAIRS) {
      assert.notEqual(p.bg.toLowerCase(), '#e2e8f0')
      assert.notEqual(p.fg.toLowerCase(), '#475569')
    }
  })
})

describe('build/parse ep url', () => {
  it('round-trips', () => {
    const raw = buildEpIconUrl('Calendar', '#dbeafe')
    assert.equal(raw, 'ep:Calendar|#dbeafe')
    const parsed = parseEpIconUrl(raw)
    assert.deepEqual(parsed, { icon: 'Calendar', bg: '#dbeafe', fg: '#2563eb' })
  })

  it('falls back on unknown icon and illegal bg', () => {
    const a = parseEpIconUrl('ep:NotARealIcon|#d1fae5')
    assert.equal(a.icon, 'Document')
    const b = parseEpIconUrl('ep:Document|#ffffff')
    assert.equal(b.bg, '#d1fae5')
    assert.equal(b.fg, '#059669')
  })

  it('falls back on malformed ep string', () => {
    const p = parseEpIconUrl('ep:broken')
    assert.equal(p.icon, 'Document')
    assert.equal(p.bg, '#d1fae5')
  })
})

describe('resolveOaAppIcon', () => {
  it('resolves ep kind', () => {
    const r = resolveOaAppIcon('ep:Document|#d1fae5')
    assert.equal(r.kind, 'ep')
    if (r.kind === 'ep') {
      assert.equal(r.icon, 'Document')
      assert.equal(r.bg, '#d1fae5')
      assert.equal(r.fg, '#059669')
    }
  })

  it('resolves image kind for legacy path', () => {
    const r = resolveOaAppIcon('/oa-app-icons/doc-orange.svg')
    assert.equal(r.kind, 'image')
    if (r.kind === 'image') {
      assert.equal(r.src, '/oa-app-icons/doc-orange.svg')
    }
  })

  it('empty becomes fallback ep', () => {
    const r = resolveOaAppIcon('')
    assert.equal(r.kind, 'ep')
  })
})

describe('random', () => {
  it('pickRandomOaAppIconUrl returns valid ep in palette and icon list', () => {
    for (let i = 0; i < 30; i++) {
      const u = pickRandomOaAppIconUrl()
      assert.equal(isEpIconUrl(u), true)
      const p = parseEpIconUrl(u)
      assert.ok(OA_APP_EP_ICON_NAMES.includes(p.icon as (typeof OA_APP_EP_ICON_NAMES)[number]))
      assert.ok(OA_APP_ICON_COLOR_PAIRS.some((c) => c.bg === p.bg))
      assert.equal(iconFgFromBg(p.bg), p.fg)
    }
  })
})