修复下载页面的稳定版、预发布版和 Nightly 通道 (#326)

下载页面目前只有稳定版和预发布版两个通道，并将 GitHub 返回的第一个预发布版本作为普通预发布版。官方新增 Nightly 后，这会误选
`nightly`，并拼出错误的版本标签和下载地址。

此次修改为中英文下载页面补齐稳定版、预发布版、开发版（Nightly）三个通道。普通预发布版明确排除 Nightly
和草稿；下载链接按发布资产中的真实文件名和地址匹配，支持 Nightly 标签与安装包版本号不同的情况。

各通道分别处理接口失败，稳定版和预发布版保留版本回退，Nightly 无法加载或暂无资产时提供官方发布页入口。同步将预发布版回退版本更新为
`2.7.0`。

验证：

- `pnpm docs:build` 构建通过。
- `pnpm exec eslint useLatestVersion.ts releaseUtils.ts metadata.data.ts
tests/releaseUtils.test.ts` 检查通过。
- `node --experimental-strip-types --test tests/releaseUtils.test.ts`：6
项回归测试通过，覆盖通道区分、Nightly 下载地址、GUI 资产版本差异、Android 安装包、缺失资产和接口失败回退。
- 浏览器验证中英文通道切换、操作系统和架构筛选、GitHub 加速前缀及构建后的页面预览。

Co-authored-by: Codex <codex@local>

en/guide/download.md

@@ -5,15 +5,16 @@ home: hello
 <script setup lang="ts">
 import { computed, ref } from 'vue'
 import { data } from '../../metadata.data.js'
+import { resolveDownloadUrl } from '../../releaseUtils.ts'
 import { useLatestVersion } from '../../useLatestVersion.ts'
 
-const { latestVersion, prereleaseVersion, loading, error } = useLatestVersion()
+const { latestVersion, prereleaseVersion, latestRelease, prereleaseRelease, nightlyRelease, loading } = useLatestVersion()
 
 interface Package {
     os: string
     arch: string
-    gui_pkg_tmpl: record<string, string>
-    cli_pkg_tmpl: record<string, string> // key: format, value: url
+    gui_pkg_tmpl: Record<string, string>
+    cli_pkg_tmpl: Record<string, string> // key: format, value: url
     comment?: string
 }
 
@@ -157,20 +158,30 @@ const all_proxy = new Set(data.github_accels)
 
 const channel = ref('easytier_latest_version')
 
-const url = 'https://github.com/EasyTier/EasyTier/releases/tag/v'
+const url = 'https://github.com/EasyTier/EasyTier/releases/tag/'
 const filter_os = ref('')
 const filter_arch = ref('')
 const accel_proxy = ref('')
 
 const vers = computed(() => ({
-    easytier_latest_version: (!loading.value && !error.value && latestVersion.value) ? latestVersion.value : data.easytier_latest_version,
-    easytier_pre_release_version: (!loading.value && !error.value && prereleaseVersion.value) ? prereleaseVersion.value : data.easytier_pre_release_version,
+    easytier_latest_version: latestVersion.value ?? data.easytier_latest_version,
+    easytier_pre_release_version: prereleaseVersion.value ?? data.easytier_pre_release_version,
 }))
 
 const currentVersion = computed(() => vers.value[channel.value as keyof typeof vers.value])
+const currentRelease = computed(() => {
+    if (channel.value === 'nightly')
+        return nightlyRelease.value
+    return channel.value === 'easytier_latest_version' ? latestRelease.value : prereleaseRelease.value
+})
+const currentTag = computed(() => channel.value === 'nightly' ? 'nightly' : currentRelease.value?.tag_name ?? `v${currentVersion.value}`)
+const currentTitle = computed(() => channel.value === 'nightly' ? 'Nightly' : currentTag.value)
 
-function renderUrlTmpl(url_tmpl: string): string {
-    return accel_proxy.value + url_tmpl.replace(/\{\}/g, currentVersion.value)
+function renderLinks(templates: Record<string, string>) {
+    return Object.entries(templates).flatMap(([format, template]) => {
+        const downloadUrl = resolveDownloadUrl(template, currentRelease.value, channel.value === 'nightly' ? undefined : currentVersion.value)
+        return downloadUrl ? [{ format, url: accel_proxy.value + downloadUrl }] : []
+    })
 }
 
 </script>
@@ -192,10 +203,18 @@ The command line program package includes four executables:
     <select name="channel-select" id="channel-select" v-model="channel" class="filter-select">
         <option value="easytier_latest_version"> Stable Version(v{{ vers.easytier_latest_version }}) </option>
         <option value="easytier_pre_release_version"> Pre-release Version(v{{ vers.easytier_pre_release_version }}) </option>
+        <option value="nightly"> Development (Nightly) </option>
     </select>
 </div>
 
-## <a :href="url + currentVersion">EasyTier v{{ currentVersion }}</a> { #latest }
+<p v-if="channel === 'nightly'">Nightly follows the main branch and is intended for testing the latest features. It may be unstable.</p>
+
+## <a :href="url + currentTag">EasyTier {{ currentTitle }}</a> { #latest }
+
+<p v-if="channel === 'nightly' && !nightlyRelease?.assets.length">
+    <span v-if="loading">Loading Nightly downloads…</span>
+    <span v-else>Nightly downloads could not be loaded. Please visit the <a :href="url + 'nightly'">Nightly release page</a>.</span>
+</p>
 
 - GitHub Acceleration
     <div>
@@ -221,7 +240,7 @@ The command line program package includes four executables:
         </select>
     </div>
 
-<table>
+<table v-if="channel !== 'nightly' || nightlyRelease?.assets.length">
 
 <thead>
 <tr>
@@ -239,14 +258,14 @@ The command line program package includes four executables:
 <td> {{ pkg.arch }} </td>
 
 <td>
-<a v-for="(url_tmpl, format) in pkg.gui_pkg_tmpl" class="download-link-span" :href="renderUrlTmpl(url_tmpl)">
-{{format}}
+<a v-for="link in renderLinks(pkg.gui_pkg_tmpl)" :key="link.format" class="download-link-span" :href="link.url">
+{{link.format}}
 </a>
 </td>
 
 <td>
-<a v-for="(url_tmpl, format) in pkg.cli_pkg_tmpl" class="download-link-span" :href="renderUrlTmpl(url_tmpl)">
-{{format}}
+<a v-for="link in renderLinks(pkg.cli_pkg_tmpl)" :key="link.format" class="download-link-span" :href="link.url">
+{{link.format}}
 </a>
 </td>
 

guide/download.md

@@ -5,15 +5,16 @@ home: hello
 <script setup lang="ts">
 import { computed, ref } from 'vue'
 import { data } from '../metadata.data.js'
+import { resolveDownloadUrl } from '../releaseUtils.ts'
 import { useLatestVersion } from '../useLatestVersion.ts'
 
-const { latestVersion, prereleaseVersion, loading, error } = useLatestVersion()
+const { latestVersion, prereleaseVersion, latestRelease, prereleaseRelease, nightlyRelease, loading } = useLatestVersion()
 
 interface Package {
     os: string
     arch: string
-    gui_pkg_tmpl: record<string, string>
-    cli_pkg_tmpl: record<string, string> // key: format, value: url
+    gui_pkg_tmpl: Record<string, string>
+    cli_pkg_tmpl: Record<string, string> // key: format, value: url
     comment?: string
 }
 
@@ -157,20 +158,30 @@ const all_proxy = new Set(data.github_accels)
 
 const channel = ref('easytier_latest_version')
 
-const url = 'https://github.com/EasyTier/EasyTier/releases/tag/v'
+const url = 'https://github.com/EasyTier/EasyTier/releases/tag/'
 const filter_os = ref('')
 const filter_arch = ref('')
 const accel_proxy = ref('')
 
 const vers = computed(() => ({
-    easytier_latest_version: (!loading.value && !error.value && latestVersion.value) ? latestVersion.value : data.easytier_latest_version,
-    easytier_pre_release_version: (!loading.value && !error.value && prereleaseVersion.value) ? prereleaseVersion.value : data.easytier_pre_release_version,
+    easytier_latest_version: latestVersion.value ?? data.easytier_latest_version,
+    easytier_pre_release_version: prereleaseVersion.value ?? data.easytier_pre_release_version,
 }))
 
 const currentVersion = computed(() => vers.value[channel.value as keyof typeof vers.value])
+const currentRelease = computed(() => {
+    if (channel.value === 'nightly')
+        return nightlyRelease.value
+    return channel.value === 'easytier_latest_version' ? latestRelease.value : prereleaseRelease.value
+})
+const currentTag = computed(() => channel.value === 'nightly' ? 'nightly' : currentRelease.value?.tag_name ?? `v${currentVersion.value}`)
+const currentTitle = computed(() => channel.value === 'nightly' ? 'Nightly' : currentTag.value)
 
-function renderUrlTmpl(url_tmpl: string): string {
-    return accel_proxy.value + url_tmpl.replace(/\{\}/g, currentVersion.value)
+function renderLinks(templates: Record<string, string>) {
+    return Object.entries(templates).flatMap(([format, template]) => {
+        const downloadUrl = resolveDownloadUrl(template, currentRelease.value, channel.value === 'nightly' ? undefined : currentVersion.value)
+        return downloadUrl ? [{ format, url: accel_proxy.value + downloadUrl }] : []
+    })
 }
 
 </script>
@@ -192,10 +203,18 @@ function renderUrlTmpl(url_tmpl: string): string {
     <select name="channel-select" id="channel-select" v-model="channel" class="filter-select">
         <option value="easytier_latest_version"> 稳定版(v{{ vers.easytier_latest_version }}) </option>
         <option value="easytier_pre_release_version"> 预发布版(v{{ vers.easytier_pre_release_version }}) </option>
+        <option value="nightly"> 开发版（Nightly） </option>
     </select>
 </div>
 
-## <a :href="url + currentVersion">EasyTier v{{ currentVersion }}</a> { #latest }
+<p v-if="channel === 'nightly'">Nightly 跟随 main 分支更新，适合测试最新功能，可能不稳定。</p>
+
+## <a :href="url + currentTag">EasyTier {{ currentTitle }}</a> { #latest }
+
+<p v-if="channel === 'nightly' && !nightlyRelease?.assets.length">
+    <span v-if="loading">正在加载 Nightly 下载文件…</span>
+    <span v-else>暂时无法获取 Nightly 下载文件，请前往 <a :href="url + 'nightly'">Nightly 发布页</a>。</span>
+</p>
 
 - Github 加速
     <div>
@@ -221,7 +240,7 @@ function renderUrlTmpl(url_tmpl: string): string {
         </select>
     </div>
 
-<table>
+<table v-if="channel !== 'nightly' || nightlyRelease?.assets.length">
 
 <thead>
 <tr>
@@ -239,14 +258,14 @@ function renderUrlTmpl(url_tmpl: string): string {
 <td> {{ pkg.arch }} </td>
 
 <td>
-<a v-for="(url_tmpl, format) in pkg.gui_pkg_tmpl" class="download-link-span" :href="renderUrlTmpl(url_tmpl)">
-{{format}}
+<a v-for="link in renderLinks(pkg.gui_pkg_tmpl)" :key="link.format" class="download-link-span" :href="link.url">
+{{link.format}}
 </a>
 </td>
 
 <td>
-<a v-for="(url_tmpl, format) in pkg.cli_pkg_tmpl" class="download-link-span" :href="renderUrlTmpl(url_tmpl)">
-{{format}}
+<a v-for="link in renderLinks(pkg.cli_pkg_tmpl)" :key="link.format" class="download-link-span" :href="link.url">
+{{link.format}}
 </a>
 </td>
 

metadata.data.ts

@@ -2,7 +2,7 @@ export default {
   load() {
     return {
       easytier_latest_version: '2.6.4',
-      easytier_pre_release_version: '2.6.3',
+      easytier_pre_release_version: '2.7.0',
       github_accels: [
         'https://ghfast.top/',
         'https://v6.gh-proxy.org/',

releaseUtils.ts

@@ -0,0 +1,22 @@
+export interface Release {
+  tag_name: string
+  prerelease?: boolean
+  draft?: boolean
+  assets: Array<{ name: string, browser_download_url: string }>
+}
+
+export function findPrerelease(releases: Release[]): Release | null {
+  return releases.find(release => release.prerelease && !release.draft && release.tag_name !== 'nightly') ?? null
+}
+
+export function resolveDownloadUrl(template: string, release: Release | null, fallbackVersion?: string): string | undefined {
+  if (release) {
+    const filename = template.slice(template.lastIndexOf('/') + 1)
+    const pattern = filename.split('{}')
+      .map(part => part.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
+      .join('[^/]+')
+    return release.assets.find(asset => new RegExp(`^${pattern}$`).test(asset.name))?.browser_download_url
+  }
+
+  return fallbackVersion ? template.replace(/\{\}/g, fallbackVersion) : undefined
+}

tests/releaseUtils.test.ts

@@ -0,0 +1,54 @@
+import type { Release } from '../releaseUtils.ts'
+import assert from 'node:assert/strict'
+// eslint-disable-next-line test/no-import-node-test -- Use the built-in runner without adding a test framework.
+import { test } from 'node:test'
+import { findPrerelease, resolveDownloadUrl } from '../releaseUtils.ts'
+
+const cliTemplate = 'https://github.com/EasyTier/EasyTier/releases/download/v{}/easytier-linux-x86_64-v{}.zip'
+const guiTemplate = 'https://github.com/EasyTier/EasyTier/releases/download/v{}/easytier-gui_{}_x64-setup.exe'
+
+function release(tag_name: string, assets: string[] = [], prerelease = true): Release {
+  return {
+    tag_name,
+    prerelease,
+    assets: assets.map(name => ({ name, browser_download_url: `https://github.com/EasyTier/EasyTier/releases/download/${tag_name}/${name}` })),
+  }
+}
+
+test('ordinary prereleases exclude rolling nightly and draft releases', () => {
+  const prerelease = release('v2.7.0')
+  assert.equal(findPrerelease([
+    release('nightly'),
+    { ...release('v2.8.0'), draft: true },
+    prerelease,
+    release('v2.6.4', [], false),
+  ]), prerelease)
+  assert.equal(findPrerelease([release('nightly'), release('v2.6.4', [], false)]), null)
+})
+
+test('nightly uses the actual release tag and versioned asset name', () => {
+  const nightly = release('nightly', ['easytier-linux-x86_64-v2.7.0.zip'])
+  assert.equal(resolveDownloadUrl(cliTemplate, nightly), 'https://github.com/EasyTier/EasyTier/releases/download/nightly/easytier-linux-x86_64-v2.7.0.zip')
+})
+
+test('GUI asset versions can differ from the release version', () => {
+  const prerelease = release('v2.6.1', ['easytier-gui_2.6.0_x64-setup.exe'])
+  assert.equal(resolveDownloadUrl(guiTemplate, prerelease), 'https://github.com/EasyTier/EasyTier/releases/download/v2.6.1/easytier-gui_2.6.0_x64-setup.exe')
+})
+
+test('Android assets without a version placeholder also resolve', () => {
+  const nightly = release('nightly', ['app-arm64-release.apk'])
+  assert.equal(resolveDownloadUrl('https://github.com/EasyTier/EasyTier/releases/download/v{}/app-arm64-release.apk', nightly), 'https://github.com/EasyTier/EasyTier/releases/download/nightly/app-arm64-release.apk')
+})
+
+test('missing assets do not produce invented download links', () => {
+  assert.equal(resolveDownloadUrl(cliTemplate, release('nightly', ['easytier-linux-aarch64-v2.7.0.zip'])), undefined)
+  assert.equal(resolveDownloadUrl(guiTemplate, release('v2.6.4'), '2.6.4'), undefined)
+  assert.equal(resolveDownloadUrl(cliTemplate, release('nightly', ['easytier-linux-x86_64-v2.7.0Xzip'])), undefined)
+})
+
+test('API failure preserves stable and prerelease fallbacks without guessing nightly assets', () => {
+  assert.equal(resolveDownloadUrl(cliTemplate, null, '2.6.4'), 'https://github.com/EasyTier/EasyTier/releases/download/v2.6.4/easytier-linux-x86_64-v2.6.4.zip')
+  assert.equal(resolveDownloadUrl(guiTemplate, null, '2.7.0'), 'https://github.com/EasyTier/EasyTier/releases/download/v2.7.0/easytier-gui_2.7.0_x64-setup.exe')
+  assert.equal(resolveDownloadUrl(cliTemplate, null), undefined)
+})

useLatestVersion.ts

@@ -1,40 +1,42 @@
-import { onMounted, ref } from 'vue'
+import type { Release } from './releaseUtils'
+import { computed, onMounted, ref } from 'vue'
+import { findPrerelease } from './releaseUtils'
 
 export function useLatestVersion() {
-  const latestVersion = ref<string | null>(null)
-  const prereleaseVersion = ref<string | null>(null)
+  const latestRelease = ref<Release | null>(null)
+  const prereleaseRelease = ref<Release | null>(null)
+  const nightlyRelease = ref<Release | null>(null)
+  const latestVersion = computed(() => latestRelease.value?.tag_name.replace(/^v/, '') ?? null)
+  const prereleaseVersion = computed(() => prereleaseRelease.value?.tag_name.replace(/^v/, '') ?? null)
   const loading = ref(true)
   const error = ref<string | null>(null)
 
   onMounted(async () => {
-    try {
-      const [latestRes, releasesRes] = await Promise.all([
-        fetch('https://api.github.com/repos/EasyTier/EasyTier/releases/latest'),
-        fetch('https://api.github.com/repos/EasyTier/EasyTier/releases?per_page=5'),
+    async function fetchRelease<T>(path: string): Promise<T> {
+      const response = await fetch(`https://api.github.com/repos/EasyTier/EasyTier/releases${path}`, { signal: AbortSignal.timeout(10000) })
+      if (!response.ok)
+        throw new Error('Failed to fetch releases from GitHub API')
+      return response.json()
+    }
+
+    const [latest, releases, nightly] = await Promise.allSettled([
+      fetchRelease<Release>('/latest'),
+      fetchRelease<Release[]>('?per_page=100'),
+      fetchRelease<Release>('/tags/nightly'),
     ])
 
-      if (!latestRes.ok || !releasesRes.ok) {
-        throw new Error('Failed to fetch releases from GitHub API')
-      }
+    if (latest.status === 'fulfilled')
+      latestRelease.value = latest.value
+    if (releases.status === 'fulfilled')
+      prereleaseRelease.value = findPrerelease(releases.value)
+    if (nightly.status === 'fulfilled')
+      nightlyRelease.value = nightly.value
 
-      const latestData = await latestRes.json() as { tag_name?: string }
-      const releases = await releasesRes.json() as Array<{ tag_name?: string, prerelease?: boolean }>
-
-      latestVersion.value = latestData.tag_name ?? null
-      prereleaseVersion.value = releases.find(item => item.prerelease)?.tag_name ?? null
-    }
-    catch (err) {
-      error.value = err instanceof Error ? err.message : 'Unknown error'
-    }
-    finally {
+    const failure = [latest, releases, nightly].find(result => result.status === 'rejected')
+    if (failure?.status === 'rejected')
+      error.value = failure.reason instanceof Error ? failure.reason.message : 'Unknown error'
     loading.value = false
-    }
-
-    if (latestVersion.value?.startsWith('v'))
-      latestVersion.value = latestVersion.value.slice(1)
-    if (prereleaseVersion.value?.startsWith('v'))
-      prereleaseVersion.value = prereleaseVersion.value.slice(1)
   })
 
-  return { latestVersion, prereleaseVersion, loading, error }
+  return { latestVersion, prereleaseVersion, latestRelease, prereleaseRelease, nightlyRelease, loading, error }
 }