[...package].vue

<script setup lang="ts">
import type { NpmVersionDist, PackumentVersion, ReadmeResponse } from '#shared/types'
import type { JsrPackageInfo } from '#shared/types/jsr'
import { assertValidPackageName } from '#shared/utils/npm'
import { onKeyStroke } from '@vueuse/core'
import { joinURL } from 'ufo'
import { areUrlsEquivalent } from '#shared/utils/url'

definePageMeta({
  name: 'package',
  alias: ['/package/:package(.*)*'],
})

const router = useRouter()

const { packageName, requestedVersion } = usePackageRoute()

const orgName = computed(() => {
  const name = packageName.value
  if (!name.startsWith('@')) return null

  const match = name.match(/^@([^/]+)\//)
  return match ? match[1] : null
})

if (import.meta.server) {
  assertValidPackageName(packageName.value)
}

const { data: downloads } = usePackageDownloads(packageName, 'last-week')

// Fetch README for specific version if requested, otherwise latest
const { data: readmeData } = useLazyFetch<ReadmeResponse>(
  () => {
    const base = `/api/registry/readme/${packageName.value}`
    const version = requestedVersion.value
    return version ? `${base}/v/${version}` : base
  },
  { default: () => ({ html: '', playgroundLinks: [] }) },
)

// Check if package exists on JSR (only for scoped packages)
const { data: jsrInfo } = useLazyFetch<JsrPackageInfo>(() => `/api/jsr/${packageName.value}`, {
  default: () => ({ exists: false }),
  // Only fetch for scoped packages (JSR requirement)
  immediate: computed(() => packageName.value.startsWith('@')).value,
})

// Fetch total install size (lazy, can be slow for large dependency trees)
interface InstallSizeResult {
  package: string
  version: string
  selfSize: number
  totalSize: number
  dependencyCount: number
}
const {
  data: installSize,
  status: installSizeStatus,
  execute: fetchInstallSize,
} = useLazyFetch<InstallSizeResult | null>(
  () => {
    const base = `/api/registry/install-size/${packageName.value}`
    const version = requestedVersion.value
    return version ? `${base}/v/${version}` : base
  },
  {
    server: false,
    immediate: false,
  },
)
onMounted(() => fetchInstallSize())

const { data: packageAnalysis } = usePackageAnalysis(packageName, requestedVersion)

const { data: pkg, status, error } = await usePackage(packageName, requestedVersion)
const resolvedVersion = computed(() => pkg.value?.resolvedVersion ?? null)

// Get the version to display (resolved version or latest)
const displayVersion = computed(() => {
  if (!pkg.value) return null

  // Use resolved version if available
  if (resolvedVersion.value) {
    return pkg.value.versions[resolvedVersion.value] ?? null
  }

  // Fallback to latest
  const latestTag = pkg.value['dist-tags']?.latest
  if (!latestTag) return null
  return pkg.value.versions[latestTag] ?? null
})

// Keep latestVersion for comparison (to show "(latest)" badge)
const latestVersion = computed(() => {
  if (!pkg.value) return null
  const latestTag = pkg.value['dist-tags']?.latest
  if (!latestTag) return null
  return pkg.value.versions[latestTag] ?? null
})

const deprecationNotice = computed(() => {
  if (!displayVersion.value?.deprecated) return null

  const isLatestDeprecated = !!latestVersion.value?.deprecated

  // If latest is deprecated, show "package deprecated"
  if (isLatestDeprecated) {
    return { type: 'package' as const, message: displayVersion.value.deprecated }
  }

  // Otherwise show "version deprecated"
  return { type: 'version' as const, message: displayVersion.value.deprecated }
})

const sizeTooltip = computed(() => {
  const chunks = [
    displayVersion.value &&
      displayVersion.value.dist.unpackedSize &&
      `${formatBytes(displayVersion.value.dist.unpackedSize)} unpacked size (this package)`,
    installSize.value &&
      installSize.value.dependencyCount &&
      `${formatBytes(installSize.value.totalSize)} total unpacked size (including all ${installSize.value.dependencyCount} dependencies for linux-x64)`,
  ]
  return chunks.filter(Boolean).join('\n')
})

const hasDependencies = computed(() => {
  if (!displayVersion.value) return false
  const deps = displayVersion.value.dependencies
  const peerDeps = displayVersion.value.peerDependencies
  const optionalDeps = displayVersion.value.optionalDependencies
  return (
    (deps && Object.keys(deps).length > 0) ||
    (peerDeps && Object.keys(peerDeps).length > 0) ||
    (optionalDeps && Object.keys(optionalDeps).length > 0)
  )
})

const repositoryUrl = computed(() => {
  const repo = displayVersion.value?.repository
  if (!repo?.url) return null
  let url = normalizeGitUrl(repo.url)
  // append `repository.directory` for monorepo packages
  if (repo.directory) {
    url = joinURL(`${url}/tree/HEAD`, repo.directory)
  }
  return url
})

const { meta: repoMeta, repoRef, stars, starsLink, forks, forksLink } = useRepoMeta(repositoryUrl)

const PROVIDER_ICONS: Record<string, string> = {
  github: 'i-carbon-logo-github',
  gitlab: 'i-simple-icons-gitlab',
  bitbucket: 'i-simple-icons-bitbucket',
  codeberg: 'i-simple-icons-codeberg',
  gitea: 'i-simple-icons-gitea',
  forgejo: 'i-simple-icons-forgejo',
  gitee: 'i-simple-icons-gitee',
  sourcehut: 'i-simple-icons-sourcehut',
  tangled: 'i-custom-tangled',
  radicle: 'i-carbon-network-3', // Radicle is a P2P network, using network icon
}

const repoProviderIcon = computed(() => {
  const provider = repoRef.value?.provider
  if (!provider) return 'i-carbon-logo-github'
  return PROVIDER_ICONS[provider] ?? 'i-carbon-code'
})

const homepageUrl = computed(() => {
  const homepage = displayVersion.value?.homepage
  if (!homepage) return null

  // Don't show homepage if it's the same as the repository URL
  if (repositoryUrl.value && areUrlsEquivalent(homepage, repositoryUrl.value)) {
    return null
  }

  return homepage
})

// Docs URL: use our generated API docs
const docsLink = computed(() => {
  if (!displayVersion.value) return null

  return {
    name: 'docs' as const,
    params: { path: [...pkg.value!.name.split('/'), 'v', displayVersion.value.version] },
  }
})

const fundingUrl = computed(() => {
  let funding = displayVersion.value?.funding
  if (Array.isArray(funding)) funding = funding[0]

  if (!funding) return null

  return typeof funding === 'string' ? funding : funding.url
})

function normalizeGitUrl(url: string): string {
  return url
    .replace(/^git\+/, '')
    .replace(/^git:\/\//, 'https://')
    .replace(/\.git$/, '')
    .replace(/^ssh:\/\/git@github\.com/, 'https://github.com')
    .replace(/^git@github\.com:/, 'https://github.com/')
}

function formatBytes(bytes: number): string {
  if (bytes < 1024) return `${bytes} B`
  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} kB`
  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`
}

function formatNumber(num: number): string {
  return new Intl.NumberFormat('en-US').format(num)
}

function getDependencyCount(version: PackumentVersion | null): number {
  if (!version?.dependencies) return 0
  return Object.keys(version.dependencies).length
}

// Check if a version has provenance/attestations
// The dist object may have attestations that aren't in the base type
function hasProvenance(version: PackumentVersion | null): boolean {
  if (!version?.dist) return false
  const dist = version.dist as NpmVersionDist
  return !!dist.attestations
}

// Get @types package name if available (non-deprecated)
const typesPackageName = computed(() => {
  if (!packageAnalysis.value) return null
  if (packageAnalysis.value.types.kind !== '@types') return null
  if (packageAnalysis.value.types.deprecated) return null
  return packageAnalysis.value.types.packageName
})

const {
  selectedPM,
  installCommandParts,
  typesInstallCommandParts,
  showTypesInInstall,
  copied,
  copyInstallCommand,
} = useInstallCommand(packageName, requestedVersion, jsrInfo, typesPackageName)

// Executable detection for run command
const executableInfo = computed(() => {
  if (!displayVersion.value || !pkg.value) return null
  return getExecutableInfo(pkg.value.name, displayVersion.value.bin)
})

// Detect if package is binary-only (show only execute commands, no install)
const isBinaryOnly = computed(() => {
  if (!displayVersion.value || !pkg.value) return false
  return isBinaryOnlyPackage({
    name: pkg.value.name,
    bin: displayVersion.value.bin,
    main: displayVersion.value.main,
    module: displayVersion.value.module,
    exports: displayVersion.value.exports,
  })
})

// Detect if package uses create-* naming convention
const isCreatePkg = computed(() => {
  if (!pkg.value) return false
  return isCreatePackage(pkg.value.name)
})

// Run command parts for a specific command (local execute after install)
function getRunParts(command?: string) {
  if (!pkg.value) return []
  return getRunCommandParts({
    packageName: pkg.value.name,
    packageManager: selectedPM.value,
    jsrInfo: jsrInfo.value,
    command,
    isBinaryOnly: false, // Local execute
  })
}

// Execute command parts for binary-only packages (remote execute)
const executeCommandParts = computed(() => {
  if (!pkg.value) return []
  return getExecuteCommandParts({
    packageName: pkg.value.name,
    packageManager: selectedPM.value,
    jsrInfo: jsrInfo.value,
    isBinaryOnly: true,
    isCreatePackage: isCreatePkg.value,
  })
})

// Full execute command string for copying
const executeCommand = computed(() => {
  if (!pkg.value) return ''
  return getExecuteCommand({
    packageName: pkg.value.name,
    packageManager: selectedPM.value,
    jsrInfo: jsrInfo.value,
    isBinaryOnly: true,
    isCreatePackage: isCreatePkg.value,
  })
})

// Copy execute command (for binary-only packages)
const { copied: executeCopied, copy: copyExecute } = useClipboard({ copiedDuring: 2000 })
const copyExecuteCommand = () => copyExecute(executeCommand.value)

// Get associated create-* package info (e.g., vite -> create-vite)
const createPackageInfo = computed(() => {
  if (!packageAnalysis.value?.createPackage) return null
  // Don't show if deprecated
  if (packageAnalysis.value.createPackage.deprecated) return null
  return packageAnalysis.value.createPackage
})

// Create command parts for associated create-* package
const createCommandParts = computed(() => {
  if (!createPackageInfo.value) return []
  const pm = packageManagers.find(p => p.id === selectedPM.value)
  if (!pm) return []

  // Extract short name: create-vite -> vite
  const createPkgName = createPackageInfo.value.packageName
  let shortName: string
  if (createPkgName.startsWith('@')) {
    // @scope/create-foo -> foo
    const slashIndex = createPkgName.indexOf('/')
    const name = createPkgName.slice(slashIndex + 1)
    shortName = name.startsWith('create-') ? name.slice('create-'.length) : name
  } else {
    // create-vite -> vite
    shortName = createPkgName.startsWith('create-')
      ? createPkgName.slice('create-'.length)
      : createPkgName
  }

  return [...pm.create.split(' '), shortName]
})

// Full create command string for copying
const createCommand = computed(() => {
  return createCommandParts.value.join(' ')
})

// Copy create command
const { copied: createCopied, copy: copyCreate } = useClipboard({ copiedDuring: 2000 })
const copyCreateCommand = () => copyCreate(createCommand.value)

// Primary run command parts
const runCommandParts = computed(() => {
  if (!executableInfo.value?.hasExecutable) return []
  return getRunParts(executableInfo.value.primaryCommand)
})

// Full run command string for copying
function getFullRunCommand(command?: string) {
  if (!pkg.value) return ''
  return getRunCommand({
    packageName: pkg.value.name,
    packageManager: selectedPM.value,
    jsrInfo: jsrInfo.value,
    command,
  })
}

// Copy run command
const { copied: runCopied, copy: copyRun } = useClipboard({ copiedDuring: 2000 })
const copyRunCommand = (command?: string) => copyRun(getFullRunCommand(command))

// Expandable description
const descriptionExpanded = ref(false)
const descriptionRef = useTemplateRef('descriptionRef')
const descriptionOverflows = ref(false)

// Check if description overflows on mount/update
function checkDescriptionOverflow() {
  if (descriptionRef.value) {
    const paragraph = descriptionRef.value.querySelector('p')
    if (paragraph) {
      // Compare scrollHeight to the fixed container height (3 lines ~= 72px)
      descriptionOverflows.value = paragraph.scrollHeight > 72
    }
  }
}

watch(
  () => pkg.value?.description,
  () => {
    descriptionExpanded.value = false
    nextTick(checkDescriptionOverflow)
  },
)

onMounted(() => {
  nextTick(checkDescriptionOverflow)
})

// Canonical URL for this package page
const canonicalUrl = computed(() => {
  const base = `https://npmx.dev/${packageName.value}`
  return requestedVersion.value ? `${base}/v/${requestedVersion.value}` : base
})

useHead({
  link: [{ rel: 'canonical', href: canonicalUrl }],
})

useSeoMeta({
  title: () => (pkg.value?.name ? `${pkg.value.name} - npmx` : 'Package - npmx'),
  description: () => pkg.value?.description ?? '',
})

onKeyStroke('.', () => {
  if (pkg.value && displayVersion.value) {
    router.push({
      name: 'code',
      params: {
        path: [pkg.value.name, 'v', displayVersion.value.version],
      },
    })
  }
})

onKeyStroke('d', () => {
  if (docsLink.value) {
    router.push(docsLink.value)
  }
})

defineOgImageComponent('Package', {
  name: () => pkg.value?.name ?? 'Package',
  version: () => displayVersion.value?.version ?? '',
  downloads: () => (downloads.value ? formatNumber(downloads.value.downloads) : ''),
  license: () => pkg.value?.license ?? '',
})
</script>

<template>
  <main class="container py-8 xl:py-12">
    <PackageSkeleton v-if="status === 'pending'" />

    <article
      v-else-if="status === 'success' && pkg"
      class="package-page motion-safe:animate-fade-in"
    >
      <!-- Package header -->
      <header class="area-header border-b border-border">
        <div class="mb-4">
          <!-- Package name and version -->
          <div class="flex items-baseline gap-2 mb-1.5 sm:gap-3 sm:mb-2 flex-wrap min-w-0">
            <h1
              class="font-mono text-2xl sm:text-3xl font-medium min-w-0 break-words"
              :title="pkg.name"
            >
              <NuxtLink
                v-if="orgName"
                :to="{ name: 'org', params: { org: orgName } }"
                class="text-fg-muted hover:text-fg transition-colors duration-200"
                >@{{ orgName }}</NuxtLink
              ><span v-if="orgName">/</span
              >{{ orgName ? pkg.name.replace(`@${orgName}/`, '') : pkg.name }}
            </h1>
            <span
              v-if="displayVersion"
              class="inline-flex items-baseline gap-1.5 font-mono text-base sm:text-lg text-fg-muted shrink-0"
            >
              <!-- Version resolution indicator (e.g., "latest → 4.2.0") -->
              <template v-if="resolvedVersion !== requestedVersion">
                <span class="font-mono text-fg-muted text-sm">{{ requestedVersion }}</span>
                <span class="i-carbon-arrow-right w-3 h-3" aria-hidden="true" />
              </template>

              <NuxtLink
                v-if="resolvedVersion !== requestedVersion"
                :to="getPackageRoute(pkg.name, displayVersion.version)"
                :title="$t('package.view_permalink')"
                >{{ displayVersion.version }}</NuxtLink
              >
              <span v-else>v{{ displayVersion.version }}</span>

              <a
                v-if="hasProvenance(displayVersion)"
                :href="`https://www.npmjs.com/package/${pkg.name}/v/${displayVersion.version}#provenance`"
                target="_blank"
                rel="noopener noreferrer"
                class="inline-flex items-center justify-center gap-1.5 text-fg-muted hover:text-fg transition-colors duration-200 min-w-6 min-h-6"
                :title="$t('package.verified_provenance')"
              >
                <span
                  class="i-solar-shield-check-outline w-3.5 h-3.5 shrink-0"
                  aria-hidden="true"
                />
              </a>
              <span
                v-if="
                  requestedVersion &&
                  latestVersion &&
                  displayVersion.version !== latestVersion.version
                "
                class="text-fg-subtle text-sm shrink-0"
                >{{ $t('package.not_latest') }}</span
              >
            </span>

            <!-- Package metrics (module format, types) -->
            <ClientOnly>
              <PackageMetricsBadges
                v-if="displayVersion"
                :package-name="pkg.name"
                :version="displayVersion.version"
                class="self-baseline ml-1 sm:ml-2"
              />
              <template #fallback>
                <ul class="flex items-center gap-1.5 self-baseline ml-1 sm:ml-2">
                  <li class="skeleton w-8 h-5 rounded" />
                  <li class="skeleton w-12 h-5 rounded" />
                </ul>
              </template>
            </ClientOnly>

            <!-- Internal navigation: Docs + Code (hidden on mobile, shown in external links instead) -->
            <nav
              v-if="displayVersion"
              :aria-label="$t('package.navigation')"
              class="hidden sm:flex items-center gap-1 p-0.5 bg-bg-subtle border border-border-subtle rounded-md shrink-0 ml-auto self-center"
            >
              <NuxtLink
                v-if="docsLink"
                :to="docsLink"
                class="px-2 py-1.5 font-mono text-xs rounded transition-colors duration-150 border border-transparent text-fg-subtle hover:text-fg hover:bg-bg hover:shadow hover:border-border focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 inline-flex items-center gap-1.5"
                aria-keyshortcuts="d"
              >
                <span class="i-carbon-document w-3 h-3" aria-hidden="true" />
                {{ $t('package.links.docs') }}
                <kbd
                  class="inline-flex items-center justify-center w-4 h-4 text-xs bg-bg-muted border border-border rounded"
                  aria-hidden="true"
                >
                  d
                </kbd>
              </NuxtLink>
              <NuxtLink
                :to="{
                  name: 'code',
                  params: { path: [...pkg.name.split('/'), 'v', displayVersion.version] },
                }"
                class="px-2 py-1.5 font-mono text-xs rounded transition-colors duration-150 border border-transparent text-fg-subtle hover:text-fg hover:bg-bg hover:shadow hover:border-border focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 inline-flex items-center gap-1.5"
                aria-keyshortcuts="."
              >
                <span class="i-carbon-code w-3 h-3" aria-hidden="true" />
                {{ $t('package.links.code') }}
                <kbd
                  class="inline-flex items-center justify-center w-4 h-4 text-xs bg-bg-muted border border-border rounded"
                  aria-hidden="true"
                >
                  .
                </kbd>
              </NuxtLink>
            </nav>
          </div>

          <!-- Fixed height description container to prevent CLS -->
          <div ref="descriptionRef" class="relative max-w-2xl min-h-[4.5rem]">
            <p
              v-if="pkg.description"
              class="text-fg-muted text-base m-0 overflow-hidden"
              :class="descriptionExpanded ? '' : 'max-h-[4.5rem]'"
            >
              <MarkdownText :text="pkg.description" />
            </p>
            <p v-else class="text-fg-subtle text-base m-0 italic">
              {{ $t('package.no_description') }}
            </p>
            <!-- Fade overlay with show more button - only when collapsed and overflowing -->
            <div
              v-if="pkg.description && descriptionOverflows && !descriptionExpanded"
              class="absolute bottom-0 left-0 right-0 h-10 bg-gradient-to-t from-bg via-bg/90 to-transparent flex items-end justify-end"
            >
              <button
                type="button"
                class="font-mono text-xs text-fg-muted hover:text-fg bg-bg px-1 transition-colors duration-200 rounded focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50"
                :aria-label="$t('package.show_full_description')"
                @click="descriptionExpanded = true"
              >
                {{ $t('common.show_more') }}
              </button>
            </div>
          </div>

          <!-- External links -->
          <ul class="flex flex-wrap items-center gap-x-3 gap-y-1.5 sm:gap-4 list-none m-0 p-0 mt-3">
            <li v-if="repositoryUrl">
              <a
                :href="repositoryUrl"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="w-4 h-4" :class="repoProviderIcon" aria-hidden="true" />
                <span v-if="repoRef">
                  {{ repoRef.owner }}<span class="opacity-50">/</span>{{ repoRef.repo }}
                </span>
                <span v-else>{{ $t('package.links.repo') }}</span>
              </a>
            </li>
            <li v-if="repositoryUrl && repoMeta && starsLink">
              <a
                :href="starsLink"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="w-4 h-4 i-carbon-star" aria-hidden="true" />
                {{ formatCompactNumber(stars, { decimals: 1 }) }}
              </a>
            </li>
            <li v-if="forks && forksLink">
              <a
                :href="forksLink"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-fork w-4 h-4" aria-hidden="true" />
                {{ formatCompactNumber(forks, { decimals: 1 }) }}
              </a>
            </li>
            <li v-if="homepageUrl">
              <a
                :href="homepageUrl"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-link w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.homepage') }}
              </a>
            </li>
            <li v-if="displayVersion?.bugs?.url">
              <a
                :href="displayVersion.bugs.url"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-warning w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.issues') }}
              </a>
            </li>
            <li>
              <a
                :href="`https://www.npmjs.com/package/${pkg.name}`"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
                :title="$t('common.view_on_npm')"
              >
                <span class="i-carbon-logo-npm w-4 h-4" aria-hidden="true" />
                npm
              </a>
            </li>
            <li v-if="jsrInfo?.exists && jsrInfo.url">
              <a
                :href="jsrInfo.url"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
                :title="$t('badges.jsr.title')"
              >
                <span class="i-simple-icons-jsr w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.jsr') }}
              </a>
            </li>
            <li v-if="fundingUrl">
              <a
                :href="fundingUrl"
                target="_blank"
                rel="noopener noreferrer"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-favorite w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.fund') }}
              </a>
            </li>
            <!-- Mobile-only: Docs + Code links -->
            <li v-if="docsLink && displayVersion" class="sm:hidden">
              <NuxtLink
                :to="docsLink"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-document w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.docs') }}
              </NuxtLink>
            </li>
            <li v-if="displayVersion" class="sm:hidden">
              <NuxtLink
                :to="{
                  name: 'code',
                  params: { path: [...pkg.name.split('/'), 'v', displayVersion.version] },
                }"
                class="link-subtle font-mono text-sm inline-flex items-center gap-1.5"
              >
                <span class="i-carbon-code w-4 h-4" aria-hidden="true" />
                {{ $t('package.links.code') }}
              </NuxtLink>
            </li>
          </ul>
        </div>

        <div
          v-if="deprecationNotice"
          class="border border-red-400 bg-red-400/10 rounded-lg px-3 py-2 text-base text-red-400"
        >
          <h2 class="font-medium mb-2">
            {{
              deprecationNotice.type === 'package'
                ? $t('package.deprecation.package')
                : $t('package.deprecation.version')
            }}
          </h2>
          <p v-if="deprecationNotice.message" class="text-base m-0">
            <MarkdownText :text="deprecationNotice.message" />
          </p>
          <p v-else class="text-base m-0 italic">{{ $t('package.deprecation.no_reason') }}</p>
        </div>

        <!-- Stats grid -->
        <dl
          class="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-3 sm:gap-4 py-4 sm:py-6 mt-4 sm:mt-6 border-t border-border"
        >
          <div v-if="pkg.license" class="space-y-1">
            <dt class="text-xs text-fg-subtle uppercase tracking-wider">
              {{ $t('package.stats.license') }}
            </dt>
            <dd class="font-mono text-sm text-fg">
              <LicenseDisplay :license="pkg.license" />
            </dd>
          </div>

          <div class="space-y-1">
            <dt class="text-xs text-fg-subtle uppercase tracking-wider">
              {{ $t('package.stats.deps') }}
            </dt>
            <dd class="font-mono text-sm text-fg flex items-center justify-start gap-2">
              {{ getDependencyCount(displayVersion) }}
              <a
                v-if="getDependencyCount(displayVersion) > 0"
                :href="`https://npmgraph.js.org/?q=${pkg.name}`"
                target="_blank"
                rel="noopener noreferrer"
                class="text-fg-subtle hover:text-fg transition-colors duration-200 inline-flex items-center justify-center min-w-6 min-h-6 -m-1 p-1"
                :title="$t('package.stats.view_dependency_graph')"
              >
                <span class="i-carbon-network-3 w-3.5 h-3.5 inline-block" aria-hidden="true" />
                <span class="sr-only">{{ $t('package.stats.view_dependency_graph') }}</span>
              </a>

              <a
                v-if="getDependencyCount(displayVersion) > 0"
                :href="`https://node-modules.dev/grid/depth#install=${pkg.name}${displayVersion?.version ? `@${displayVersion.version}` : ''}`"
                target="_blank"
                rel="noopener noreferrer"
                class="text-fg-subtle hover:text-fg transition-colors duration-200 inline-flex items-center justify-center min-w-6 min-h-6 -m-1 p-1"
                :title="$t('package.stats.inspect_dependency_tree')"
              >
                <span
                  class="i-solar-eye-scan-outline w-3.5 h-3.5 inline-block"
                  aria-hidden="true"
                />
                <span class="sr-only">{{ $t('package.stats.inspect_dependency_tree') }}</span>
              </a>
            </dd>
          </div>

          <div class="space-y-1">
            <dt class="text-xs text-fg-subtle uppercase tracking-wider flex items-center gap-1">
              {{ $t('package.stats.install_size') }}
              <span
                class="i-carbon-information w-3 h-3 text-fg-subtle"
                aria-hidden="true"
                :title="sizeTooltip"
              />
            </dt>
            <dd class="font-mono text-sm text-fg">
              <!-- Package size (greyed out) -->
              <span class="text-fg-muted">
                <span v-if="displayVersion?.dist?.unpackedSize">
                  {{ formatBytes(displayVersion.dist.unpackedSize) }}
                </span>
                <span v-else>-</span>
              </span>

              <!-- Separator and install size -->
              <span class="text-fg-subtle mx-1">/</span>

              <span
                v-if="installSizeStatus === 'pending'"
                class="inline-flex items-center gap-1 text-fg-subtle"
              >
                <span
                  class="i-carbon-circle-dash w-3 h-3 motion-safe:animate-spin"
                  aria-hidden="true"
                />
              </span>
              <span v-else-if="installSize?.totalSize">
                {{ formatBytes(installSize.totalSize) }}
              </span>
              <span v-else class="text-fg-subtle">-</span>
            </dd>
          </div>

          <div v-if="pkg.time?.modified" class="space-y-1">
            <dt class="text-xs text-fg-subtle uppercase tracking-wider">
              {{ $t('package.stats.updated') }}
            </dt>
            <dd class="font-mono text-sm text-fg">
              <DateTime :datetime="pkg.time.modified" date-style="medium" />
            </dd>
          </div>
        </dl>
      </header>

      <!-- Security vulnerabilities warning -->
      <PackageVulnerabilities
        v-if="displayVersion"
        :package-name="pkg.name"
        :version="displayVersion.version"
        class="area-vulns"
      />

      <!-- Binary-only packages: Show only execute command (no install) -->
      <section v-if="isBinaryOnly" aria-labelledby="run-heading" class="area-install scroll-mt-20">
        <div class="flex flex-wrap items-center justify-between mb-3">
          <h2 id="run-heading" class="text-xs text-fg-subtle uppercase tracking-wider">
            {{ $t('package.run.title') }}
          </h2>
          <!-- Package manager tabs -->
          <div
            class="flex items-center gap-1 p-0.5 bg-bg-subtle border border-border-subtle rounded-md"
            role="tablist"
            aria-label="Package manager"
          >
            <button
              v-for="pm in packageManagers"
              :key="pm.id"
              role="tab"
              :aria-selected="selectedPM === pm.id"
              class="px-2 py-1.5 font-mono text-xs rounded transition-colors duration-150 border border-solid focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 inline-flex items-center gap-1.5"
              :class="
                selectedPM === pm.id
                  ? 'bg-bg shadow text-fg border-border'
                  : 'text-fg-subtle hover:text-fg border-transparent'
              "
              @click="selectedPM = pm.id"
            >
              <span class="inline-block h-3 w-3" :class="pm.icon" aria-hidden="true" />
              {{ pm.label }}
            </button>
          </div>
        </div>
        <div class="relative group">
          <!-- Terminal-style execute command -->
          <div class="bg-bg-subtle border border-border rounded-lg overflow-hidden">
            <div class="flex gap-1.5 px-3 pt-2 sm:px-4 sm:pt-3">
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
            </div>
            <div class="px-3 pt-2 pb-3 sm:px-4 sm:pt-3 sm:pb-4 space-y-1">
              <!-- Execute command -->
              <div class="flex items-center gap-2 group/executecmd">
                <span class="text-fg-subtle font-mono text-sm select-none">$</span>
                <code class="font-mono text-sm"
                  ><ClientOnly
                    ><span
                      v-for="(part, i) in executeCommandParts"
                      :key="i"
                      :class="i === 0 ? 'text-fg' : 'text-fg-muted'"
                      >{{ i > 0 ? ' ' : '' }}{{ part }}</span
                    ><template #fallback
                      ><span class="text-fg">npx</span
                      ><span class="text-fg-muted"> {{ pkg.name }}</span></template
                    ></ClientOnly
                  ></code
                >
                <button
                  type="button"
                  class="px-2 py-0.5 font-mono text-xs text-fg-muted bg-bg-subtle/80 border border-border rounded transition-colors duration-200 opacity-0 group-hover/executecmd:opacity-100 hover:(text-fg border-border-hover) active:scale-95 focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50"
                  @click.stop="copyExecuteCommand"
                >
                  {{ executeCopied ? 'copied!' : 'copy' }}
                </button>
              </div>
            </div>
          </div>
        </div>
      </section>

      <!-- Regular packages: Install command with optional run command -->
      <section
        v-else
        id="get-started"
        aria-labelledby="get-started-heading"
        class="area-install scroll-mt-20"
      >
        <div class="flex flex-wrap items-center justify-between mb-3">
          <h2
            id="get-started-heading"
            class="group text-xs text-fg-subtle uppercase tracking-wider"
          >
            <a
              href="#get-started"
              class="inline-flex items-center gap-1.5 py-1 text-fg-subtle hover:text-fg-muted transition-colors duration-200 no-underline"
            >
              {{ $t('package.get_started.title') }}
              <span
                class="i-carbon-link w-3 h-3 block opacity-0 group-hover:opacity-100 transition-opacity duration-200"
                aria-hidden="true"
              />
            </a>
          </h2>
          <!-- Package manager tabs -->
          <div
            class="flex items-center gap-1 p-0.5 bg-bg-subtle border border-border-subtle rounded-md overflow-x-auto"
            role="tablist"
            :aria-label="$t('package.get_started.pm_label')"
          >
            <button
              v-for="pm in packageManagers"
              :key="pm.id"
              role="tab"
              :aria-selected="selectedPM === pm.id"
              class="px-2 py-1.5 font-mono text-xs rounded transition-colors duration-150 border border-solid focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 inline-flex items-center gap-1.5"
              :class="
                selectedPM === pm.id
                  ? 'bg-bg shadow text-fg border-border'
                  : 'text-fg-subtle hover:text-fg border-transparent'
              "
              @click="selectedPM = pm.id"
            >
              <span class="inline-block h-3 w-3" :class="pm.icon" aria-hidden="true" />
              {{ pm.label }}
            </button>
          </div>
        </div>
        <div class="relative group">
          <!-- Terminal-style install command -->
          <div class="bg-bg-subtle border border-border rounded-lg overflow-hidden">
            <div class="flex gap-1.5 px-3 pt-2 sm:px-4 sm:pt-3">
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
              <span class="w-2.5 h-2.5 rounded-full bg-fg-subtle" />
            </div>
            <div class="px-3 pt-2 pb-3 sm:px-4 sm:pt-3 sm:pb-4 space-y-1 overflow-x-auto">
              <!-- Install command -->
              <div class="flex items-center gap-2 group/installcmd min-w-0">
                <span class="text-fg-subtle font-mono text-sm select-none shrink-0">$</span>
                <code class="font-mono text-sm min-w-0"
                  ><ClientOnly
                    ><span
                      v-for="(part, i) in installCommandParts"
                      :key="i"
                      :class="i === 0 ? 'text-fg' : 'text-fg-muted'"
                      >{{ i > 0 ? ' ' : '' }}{{ part }}</span
                    ><template #fallback
                      ><span class="text-fg">npm</span
                      ><span class="text-fg-muted"> install {{ pkg.name }}</span></template
                    ></ClientOnly
                  ></code
                >
                <button
                  type="button"
                  class="px-2 py-0.5 font-mono text-xs text-fg-muted bg-bg-subtle/80 border border-border rounded transition-colors duration-200 opacity-0 group-hover/installcmd:opacity-100 hover:(text-fg border-border-hover) active:scale-95 focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50"
                  :aria-label="$t('package.get_started.copy_command')"
                  @click.stop="copyInstallCommand"
                >
                  <span aria-live="polite">{{
                    copied ? $t('common.copied') : $t('common.copy')
                  }}</span>
                </button>
              </div>

              <!-- @types package install (when enabled) -->
              <div v-if="showTypesInInstall" class="flex items-center gap-2 min-w-0">
                <span class="text-fg-subtle font-mono text-sm select-none shrink-0">$</span>
                <code class="font-mono text-sm min-w-0"
                  ><span
                    v-for="(part, i) in typesInstallCommandParts"
                    :key="i"
                    :class="i === 0 ? 'text-fg' : 'text-fg-muted'"
                    >{{ i > 0 ? ' ' : '' }}{{ part }}</span
                  ></code
                >
                <NuxtLink
                  v-if="typesPackageName"
                  :to="getPackageRoute(typesPackageName)"
                  class="text-fg-subtle hover:text-fg-muted text-xs transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 rounded"
                  :title="$t('package.get_started.view_types', { package: typesPackageName })"
                >
                  <span class="i-carbon-arrow-right w-3 h-3" aria-hidden="true" />
                  <span class="sr-only">View {{ typesPackageName }}</span>
                </NuxtLink>
              </div>

              <!-- Run command (only if package has executables) -->
              <template v-if="executableInfo?.hasExecutable">
                <!-- Comment line -->
                <div class="flex items-center gap-2 pt-1">
                  <span class="text-fg-subtle font-mono text-sm select-none"
                    ># {{ $t('package.run.locally') }}</span
                  >
                </div>

                <!-- Primary run command -->
                <div class="flex items-center gap-2 group/runcmd">
                  <span class="text-fg-subtle font-mono text-sm select-none">$</span>
                  <code class="font-mono text-sm"
                    ><ClientOnly
                      ><span
                        v-for="(part, i) in runCommandParts"
                        :key="i"
                        :class="i === 0 ? 'text-fg' : 'text-fg-muted'"
                        >{{ i > 0 ? ' ' : '' }}{{ part }}</span
                      ><template #fallback
                        ><span class="text-fg">npx</span>{{ ' '
                        }}<span class="text-fg-muted">{{
                          executableInfo?.primaryCommand
                        }}</span></template
                      ></ClientOnly
                    ></code
                  >
                  <button
                    type="button"
                    class="px-2 py-0.5 font-mono text-xs text-fg-muted bg-bg-subtle/80 border border-border rounded transition-colors duration-200 opacity-0 group-hover/runcmd:opacity-100 hover:(text-fg border-border-hover) active:scale-95 focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50"
                    @click.stop="copyRunCommand(executableInfo?.primaryCommand)"
                  >
                    {{ runCopied ? $t('common.copied') : $t('common.copy') }}
                  </button>
                </div>
              </template>

              <!-- Create command (for packages with associated create-* package) -->
              <template v-if="createPackageInfo">
                <!-- Comment line -->
                <div class="flex items-center gap-2 pt-1">
                  <span class="text-fg-subtle font-mono text-sm select-none"
                    ># {{ $t('package.create.title') }}</span
                  >
                </div>

                <!-- Create command -->
                <div class="flex items-center gap-2 group/createcmd">
                  <span class="text-fg-subtle font-mono text-sm select-none">$</span>
                  <code class="font-mono text-sm"
                    ><ClientOnly
                      ><span
                        v-for="(part, i) in createCommandParts"
                        :key="i"
                        :class="i === 0 ? 'text-fg' : 'text-fg-muted'"
                        >{{ i > 0 ? ' ' : '' }}{{ part }}</span
                      ><template #fallback
                        ><span class="text-fg">npm</span
                        ><span class="text-fg-muted">
                          create {{ createPackageInfo.packageName.replace('create-', '') }}</span
                        ></template
                      ></ClientOnly
                    ></code
                  >
                  <button
                    type="button"
                    class="px-2 py-0.5 font-mono text-xs text-fg-muted bg-bg-subtle/80 border border-border rounded transition-colors duration-200 opacity-0 group-hover/createcmd:opacity-100 hover:(text-fg border-border-hover) active:scale-95 focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50"
                    :aria-label="$t('package.create.copy_command')"
                    @click.stop="copyCreateCommand"
                  >
                    <span aria-live="polite">{{
                      createCopied ? $t('common.copied') : $t('common.copy')
                    }}</span>
                  </button>
                  <NuxtLink
                    :to="getPackageRoute(createPackageInfo.packageName)"
                    class="text-fg-subtle hover:text-fg-muted text-xs transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-fg/50 rounded"
                    :title="`View ${createPackageInfo.packageName}`"
                  >
                    <span class="i-carbon-arrow-right w-3 h-3" aria-hidden="true" />
                    <span class="sr-only">View {{ createPackageInfo.packageName }}</span>
                  </NuxtLink>
                </div>
              </template>
            </div>
          </div>
        </div>
      </section>

      <!-- Vulnerability scan - full width -->
      <div class="area-vulns">
        <ClientOnly>
          <PackageVulnerabilityTree
            v-if="displayVersion"
            :package-name="pkg.name"
            :version="displayVersion.version"
          />
        </ClientOnly>
      </div>

      <!-- README -->
      <section
        id="readme"
        aria-labelledby="readme-heading"
        class="area-readme min-w-0 scroll-mt-20"
      >
        <h2 id="readme-heading" class="group text-xs text-fg-subtle uppercase tracking-wider mb-4">
          <a
            href="#readme"
            class="inline-flex items-center gap-1.5 text-fg-subtle hover:text-fg-muted transition-colors duration-200 no-underline"
          >
            {{ $t('package.readme.title') }}
            <span
              class="i-carbon-link w-3 h-3 block opacity-0 group-hover:opacity-100 transition-opacity duration-200"
              aria-hidden="true"
            />
          </a>
        </h2>
        <!-- eslint-disable vue/no-v-html -- HTML is sanitized server-side -->
        <div
          v-if="readmeData?.html"
          class="readme-content prose prose-invert max-w-[70ch]"
          v-html="readmeData.html"
        />
        <p v-else class="text-fg-subtle italic">
          {{ $t('package.readme.no_readme') }}
          <a v-if="repositoryUrl" :href="repositoryUrl" rel="noopener noreferrer" class="link">{{
            $t('package.readme.view_on_github')
          }}</a>
        </p>
      </section>

      <div class="area-sidebar">
        <!-- Sidebar -->
        <aside class="sticky top-20 space-y-6 sm:space-y-8 min-w-0 overflow-hidden">
          <!-- Maintainers (with admin actions when connected) -->
          <PackageMaintainers :package-name="pkg.name" :maintainers="pkg.maintainers" />

          <!-- Team access controls (for scoped packages when connected) -->
          <ClientOnly>
            <PackageAccessControls :package-name="pkg.name" />
          </ClientOnly>

          <!-- Keywords -->
          <section
            id="keywords"
            v-if="displayVersion?.keywords?.length"
            aria-labelledby="keywords-heading"
            class="scroll-mt-20"
          >
            <h2
              id="keywords-heading"
              class="group text-xs text-fg-subtle uppercase tracking-wider mb-3"
            >
              <a
                href="#keywords"
                class="inline-flex items-center gap-1.5 text-fg-subtle hover:text-fg-muted transition-colors duration-200 no-underline"
              >
                {{ $t('package.keywords_title') }}
                <span
                  class="i-carbon-link w-3 h-3 block opacity-0 group-hover:opacity-100 transition-opacity duration-200"
                  aria-hidden="true"
                />
              </a>
            </h2>
            <ul class="flex flex-wrap gap-1.5 list-none m-0 p-0">
              <li v-for="keyword in displayVersion.keywords.slice(0, 15)" :key="keyword">
                <NuxtLink :to="{ name: 'search', query: { q: `keywords:${keyword}` } }" class="tag">
                  {{ keyword }}
                </NuxtLink>
              </li>
            </ul>
          </section>

          <!-- Download stats -->
          <PackageWeeklyDownloadStats :packageName />

          <!-- Playground links -->
          <PackagePlaygrounds
            v-if="readmeData?.playgroundLinks?.length"
            :links="readmeData.playgroundLinks"
          />

          <section
            id="compatibility"
            v-if="
              displayVersion?.engines && (displayVersion.engines.node || displayVersion.engines.npm)
            "
            aria-labelledby="compatibility-heading"
            class="scroll-mt-20"
          >
            <h2
              id="compatibility-heading"
              class="group text-xs text-fg-subtle uppercase tracking-wider mb-3"
            >
              <a
                href="#compatibility"
                class="inline-flex items-center gap-1.5 text-fg-subtle hover:text-fg-muted transition-colors duration-200 no-underline"
              >
                {{ $t('package.compatibility') }}
                <span
                  class="i-carbon-link w-3 h-3 block opacity-0 group-hover:opacity-100 transition-opacity duration-200"
                  aria-hidden="true"
                />
              </a>
            </h2>
            <dl class="space-y-2">
              <div v-if="displayVersion.engines.node" class="flex justify-between gap-4 py-1">
                <dt class="text-fg-muted text-sm shrink-0">node</dt>
                <dd
                  class="font-mono text-sm text-fg text-right"
                  :title="displayVersion.engines.node"
                >
                  {{ displayVersion.engines.node }}
                </dd>
              </div>
              <div v-if="displayVersion.engines.npm" class="flex justify-between gap-4 py-1">
                <dt class="text-fg-muted text-sm shrink-0">npm</dt>
                <dd
                  class="font-mono text-sm text-fg text-right"
                  :title="displayVersion.engines.npm"
                >
                  {{ displayVersion.engines.npm }}
                </dd>
              </div>
            </dl>
          </section>

          <!-- Versions (grouped by release channel) -->
          <PackageVersions
            v-if="pkg.versions && Object.keys(pkg.versions).length > 0"
            :package-name="pkg.name"
            :versions="pkg.versions"
            :dist-tags="pkg['dist-tags'] ?? {}"
            :time="pkg.time"
          />

          <!-- Install Scripts Warning -->
          <PackageInstallScripts
            v-if="displayVersion?.installScripts"
            :package-name="pkg.name"
            :install-scripts="displayVersion.installScripts"
          />

          <!-- Dependencies -->
          <PackageDependencies
            v-if="hasDependencies && displayVersion"
            :package-name="pkg.name"
            :version="displayVersion.version"
            :dependencies="displayVersion.dependencies"
            :peer-dependencies="displayVersion.peerDependencies"
            :peer-dependencies-meta="displayVersion.peerDependenciesMeta"
            :optional-dependencies="displayVersion.optionalDependencies"
          />
        </aside>
      </div>
    </article>

    <!-- Error state -->
    <div
      v-else-if="status === 'error'"
      role="alert"
      class="flex flex-col items-center py-20 text-center"
    >
      <h1 class="font-mono text-2xl font-medium mb-4">{{ $t('package.not_found') }}</h1>
      <p class="text-fg-muted mb-8">
        {{ error?.message ?? $t('package.not_found_message') }}
      </p>
      <NuxtLink to="/" class="btn">{{ $t('common.go_back_home') }}</NuxtLink>
    </div>
  </main>
</template>

<style scoped>
.package-page {
  display: grid;
  gap: 2rem;

  /* Mobile: single column, sidebar above readme */
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    'header'
    'install'
    'vulns'
    'sidebar'
    'readme';
}

/* Tablet/medium: header/install/vulns full width, readme+sidebar side by side */
@media (min-width: 1024px) {
  .package-page {
    grid-template-columns: 2fr 1fr;
    grid-template-areas:
      'header  header'
      'install install'
      'vulns   vulns'
      'readme  sidebar';
  }
}

/* Desktop: floating sidebar alongside all content */
@media (min-width: 1280px) {
  .package-page {
    grid-template-columns: 1fr 20rem;
    grid-template-areas:
      'header  sidebar'
      'install sidebar'
      'vulns   sidebar'
      'readme  sidebar';
  }
}

.area-header {
  grid-area: header;
  overflow-x: hidden;
}
.area-install {
  grid-area: install;
  overflow-x: hidden;
}
.area-vulns {
  grid-area: vulns;
  overflow-x: hidden;
}
.area-readme {
  grid-area: readme;
  overflow-x: hidden;
}
.area-sidebar {
  grid-area: sidebar;
}

/* Improve package name wrapping for narrow screens */
.area-header h1 {
  overflow-wrap: anywhere;
}

/* Ensure description text wraps properly */
.area-header p {
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Allow install command text to break on narrow screens */
.area-install code {
  word-break: break-word;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

/* Ensure all text content wraps on narrow screens */
.package-page {
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
}

/* Ensure all children respect max-width */
.package-page > * {
  max-width: 100%;
  min-width: 0;
}
</style>