编辑器三件套（参考 xLog）：CodeMirror 源码模式 + 外链图片一键转存 + 上传进度/前置校验

- md 页签从裸 textarea 升级 CodeMirror 6：markdown 语法高亮、行内历史，粘贴/拖图直传； markdown 仍是唯一真相源，转存/切换用 syncCM 全量灌回，工具栏选区辅助改为面向 CM - POST /api/admin/files/import：外链抓取复用 linkmeta SSRF 防护拨号与跳转限制，二进制传输放宽 30s；类型按内容嗅探反查白名单，与手动上传共用去重/落盘（persistFile 抽取共享） - 上传走 XHR 进度回调 + 编辑器 toast 栈：类型/大小前置校验（与后端白名单一致）、逐文件进度 - persistFile 去重路径补 URL 解析——此前命中去重返回的行没有 URL，转存替换会把正文图链清空（已修复受损数据） - hub nil 安全（测试环境未装配时不 panic）
2026-09-28 23:42:24 +08:00
parent b93fe9847c
commit f7a2e83727
9 changed files with 553 additions and 99 deletions
@@ -2,9 +2,14 @@
 import { computed, nextTick, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue'
 import { onBeforeRouteLeave, useRoute, useRouter } from 'vue-router'
 import { adminApi } from '../api'
+import { site } from '../site'
 import { Crepe, CrepeFeature } from '@milkdown/crepe'
 import '@milkdown/crepe/theme/common/style.css'
 import '@milkdown/crepe/theme/frame.css'
+import { EditorView as CMView, keymap } from '@codemirror/view'
+import { EditorState } from '@codemirror/state'
+import { markdown as markdownLang } from '@codemirror/lang-markdown'
+import { history, defaultKeymap, historyKeymap, indentWithTab } from '@codemirror/commands'

 const route = useRoute()
 const router = useRouter()
@@ -184,6 +189,10 @@ onBeforeUnmount(() => {
    crepe.destroy()
    crepe = null
  }
+  if (cmView) {
+    cmView.destroy()
+    cmView = null
+  }
 })

 // ---------- mode switching ----------
@@ -195,6 +204,10 @@ async function switchMode(next) {
      crepe.destroy()
      crepe = null
    }
+    // CM 懒挂载；已挂载就把 wysiwyg 期间产生的 markdown 灌回来
+    await nextTick()
+    mountCM()
+    syncCM()
  } else {
    // MD → WYSIWYG: spin up crepe with the current markdown
    await nextTick()
@@ -399,6 +412,76 @@ function clearCover() {
 // ---------- 工具栏：Markdown 模式插入 + 通用动作 ----------

 const mdPane = ref(null)
+
+// ---------- CodeMirror 源码模式 ----------
+// md 页签不是裸 textarea：语法高亮 + 行内历史（⌘Z），粘贴/拖图片直接上传。
+// markdown 仍是唯一真相源——CM 的改动写回 form.content_md，
+// 外部改动（转存替换、wysiwyg 切回）用 syncCM 全量灌回。
+let cmView = null
+const cmTheme = CMView.theme({
+  '&': { color: 'var(--admin-ink)', backgroundColor: 'transparent', fontSize: '13.5px' },
+  '.cm-content': { fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace', lineHeight: '1.75', padding: '12px 0 40vh' },
+  '.cm-scroller': { overflow: 'auto', maxHeight: '70vh' },
+  '.cm-line': { padding: '0 2px' },
+  '&.cm-focused': { outline: 'none' },
+  '.cm-cursor': { borderLeftColor: 'var(--admin-accent)' },
+  '.cm-selectionBackground, ::selection': { backgroundColor: 'color-mix(in srgb, var(--admin-accent) 18%, transparent) !important' },
+  '.cm-activeLine': { backgroundColor: 'color-mix(in srgb, var(--admin-accent) 6%, transparent)' },
+  '.cm-heading, .cm-header': { color: 'var(--admin-accent)', fontWeight: '600' },
+  '.cm-link, .cm-url': { color: 'var(--admin-accent)', textDecoration: 'underline' },
+  '.cm-emphasis': { fontStyle: 'italic' },
+  '.cm-strong': { fontWeight: '700' },
+  '.cm-code, .cm-monospace': { fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace', color: 'var(--admin-muted)' }
+})
+
+function handleEditorFiles(files, view) {
+  const list = [...files].filter((f) => f.type.startsWith('image/'))
+  if (!list.length) return false
+  view.dispatch({
+    changes: { from: view.state.selection.main.from, insert: ' ' }
+  })
+  ;[...list].forEach((f) => uploadOne(f, { insertImage: true }))
+  return true
+}
+
+function mountCM() {
+  if (cmView || !mdPane.value) return
+  cmView = new CMView({
+    parent: mdPane.value,
+    state: EditorState.create({
+      doc: form.content_md,
+      extensions: [
+        history(),
+        keymap.of([...defaultKeymap, ...historyKeymap, indentWithTab]),
+        markdownLang(),
+        cmTheme,
+        CMView.updateListener.of((u) => {
+          if (u.docChanged) form.content_md = u.state.doc.toString()
+        }),
+        CMView.domEventHandlers({
+          paste: (e, view) => handleEditorFiles(e.clipboardData?.files, view),
+          drop: (e, view) => {
+            if (e.dataTransfer?.files?.length) {
+              e.preventDefault()
+              return handleEditorFiles(e.dataTransfer.files, view)
+            }
+            return false
+          }
+        })
+      ]
+    })
+  })
+}
+
+// 用 form.content_md 的当前值整段灌回（进入 md 页签、转存替换后调用）
+function syncCM() {
+  if (!cmView) return
+  const cur = cmView.state.doc.toString()
+  if (cur === form.content_md) return
+  cmView.dispatch({
+    changes: { from: 0, to: cur.length, insert: form.content_md }
+  })
+}
 const showLinkInput = ref(false)
 const showImageInput = ref(false)
 const linkText = ref('')
@@ -407,22 +490,31 @@ const imageUrl = ref('')
 const imageAlt = ref('')

 function insertAtCursor(text, selStart, selEnd) {
+  if (cmView) {
+    if (selStart == null) {
+      const s = cmView.state.selection.main
+      selStart = s.from
+      selEnd = s.to
+    }
+    cmView.dispatch({
+      changes: { from: selStart, to: selEnd, insert: text },
+      selection: { anchor: selStart + text.length }
+    })
+    cmView.focus()
+    return
+  }
  const before = form.content_md.slice(0, selStart)
  const after = form.content_md.slice(selEnd)
  form.content_md = before + text + after
-  nextTick(() => {
-    if (!mdPane.value) return
-    const newPos = selStart + text.length
-    mdPane.value.focus()
-    mdPane.value.setSelectionRange(newPos, newPos)
-  })
 }

 function withSelection(fn) {
-  const el = mdPane.value
-  const start = el ? el.selectionStart : form.content_md.length
-  const end = el ? el.selectionEnd : form.content_md.length
-  fn(start, end)
+  if (cmView) {
+    const sel = cmView.state.selection.main
+    fn(sel.from, sel.to)
+    return
+  }
+  fn(form.content_md.length, form.content_md.length)
 }

 function tbBold() {
@@ -533,24 +625,142 @@ function commitImage() {
  showImageInput.value = false
 }

+// ---------- toast ----------
+// 编辑器内的轻提示：上传进度、转存结果、校验失败。自动消失，错误多留一会儿。
+const toasts = reactive([])
+let toastSeq = 0
+function toast(text, type = 'info', ttl = 2600) {
+  const id = ++toastSeq
+  toasts.push({ id, text, type })
+  setTimeout(() => {
+    const i = toasts.findIndex((t) => t.id === id)
+    if (i >= 0) toasts.splice(i, 1)
+  }, ttl)
+  return id
+}
+function toastUpdate(id, text, type = 'info') {
+  const t = toasts.find((x) => x.id === id)
+  if (t) {
+    t.text = text
+    t.type = type
+  }
+}
+function toastDone(id, text) {
+  toastUpdate(id, text, 'ok')
+  const idx = toasts.findIndex((t) => t.id === id)
+  if (idx >= 0) {
+    const t = toasts[idx]
+    setTimeout(() => {
+      const i = toasts.indexOf(t)
+      if (i >= 0) toasts.splice(i, 1)
+    }, 1800)
+  }
+}
+
 // ---------- 上传（封面 / 编辑器插图共用） ----------
 // 后台「高级 → 自定义 JS」无关；走 /api/admin/files（FormData）。
 const uploadingImage = ref(false)

-async function uploadOne(file) {
-  const fd = new FormData()
-  fd.append('file', file)
+// 与后端 allowFileExt / 50MB 上限一致：上传前本地校验，省一趟白跑
+const ALLOW_UPLOAD_EXT = ['jpg', 'jpeg', 'png', 'webp', 'gif', 'avif', 'pdf', 'zip', 'txt']
+const MAX_UPLOAD_MB = 50
+
+function validateFile(file) {
+  const ext = (file.name.split('.').pop() || '').toLowerCase()
+  if (!ALLOW_UPLOAD_EXT.includes(ext)) {
+    return `不支持的类型 .${ext}（允许：${ALLOW_UPLOAD_EXT.join('/')}）`
+  }
+  if (file.size > MAX_UPLOAD_MB * 1024 * 1024) {
+    return `${file.name} 超过 ${MAX_UPLOAD_MB}MB 上限`
+  }
+  return ''
+}
+
+// opts.cmView 传了就把结果以 markdown 图片插到该编辑器光标处（md 页签粘贴/拖拽）
+async function uploadOne(file, opts = {}) {
+  const bad = validateFile(file)
+  if (bad) {
+    toast(bad, 'err')
+    throw new Error(bad)
+  }
+  const tid = toast(`上传 ${file.name} 0%`, 'info', 60000)
  try {
-    const data = await adminApi.uploadFiles(fd)
+    const data = await adminApi.uploadFile(file, (p) =>
+      toastUpdate(tid, `上传 ${file.name} ${Math.round(p * 100)}%`)
+    )
    const f = Array.isArray(data) ? data[0] : null
    if (!f || !f.url) throw new Error('上传失败')
+    toastDone(tid, `${file.name} 上传完成`)
+    if (opts.cmView) {
+      const v = opts.cmView
+      const pos = v.state.selection.main.from
+      v.dispatch({ changes: { from: pos, insert: `![](${f.url})\n` } })
+    }
    return f.url
  } catch (e) {
+    toastUpdate(tid, `${file.name} 上传失败：${e.message || '未知错误'}`, 'err')
    error.value = e.message || '上传失败'
    throw e
  }
 }

+// ---------- 外链图片转存 ----------
+// xLog 的 Cloud：正文里的外链 <img> 一键抓回自己的存储（后端走 SSRF
+// 防护拨号 + 同一套白名单/去重），成功后原地替换 markdown 里的 URL。
+const importing = ref(false)
+
+function externalImages(md) {
+  const own = [site.uploads_public_base, location.origin].filter(Boolean)
+  const out = []
+  const re = /!\[[^\]]*\]\((https?:\/\/[^)\s]+)\)/g
+  let m
+  while ((m = re.exec(md))) {
+    const u = m[1]
+    if (!own.some((b) => u.startsWith(b)) && !u.startsWith('/uploads/')) out.push(u)
+  }
+  return [...new Set(out)]
+}
+
+async function importExternal() {
+  if (importing.value) return
+  const urls = externalImages(form.content_md)
+  if (!urls.length) {
+    toast('正文里没有外链图片', 'info')
+    return
+  }
+  importing.value = true
+  const tid = toast(`转存外链图片 0/${urls.length}…`, 'info', 120000)
+  try {
+    const data = await adminApi.importFiles(urls)
+    // 后端按原址回：source -> 转存后的文件（同内容去重时可能是已有行）
+    const ok = new Map((data.files || []).map((e) => [e.source, e.file]))
+    const errs = data.errors || {}
+    let done = 0
+    let changed = false
+    form.content_md = form.content_md.replace(
+      /!\[([^\]]*)\]\((https?:\/\/[^)\s]+)\)/g,
+      (whole, alt, u) => {
+        if (!ok.has(u)) return whole
+        done++
+        toastUpdate(tid, `转存外链图片 ${done}/${urls.length}…`)
+        changed = true
+        return `![${alt}](${ok.get(u).url})`
+      }
+    )
+    if (changed) syncCM()
+    const fail = Object.keys(errs).length
+    if (fail) {
+      toastUpdate(tid, `转存完成：${done} 成功，${fail} 失败（${Object.values(errs)[0]}）`, fail ? 'err' : 'ok')
+    } else {
+      toastDone(tid, `转存完成：${done} 张已入自己的存储`)
+    }
+  } catch (e) {
+    toastUpdate(tid, '转存失败：' + (e.message || ''), 'err')
+  } finally {
+    importing.value = false
+  }
+}
+
 const coverInput = ref(null)
 async function onCoverPick(e) {
  const file = e.target.files && e.target.files[0]
@@ -693,6 +903,14 @@ const tbGroups = computed(() => [
          <div class="editor-mode">
            <button :class="{ on: mode === 'wysiwyg' }" @click="switchMode('wysiwyg')">富文本</button>
            <button :class="{ on: mode === 'md' }" @click="switchMode('md')">Markdown</button>
+            <button
+              class="btn"
+              :disabled="importing"
+              title="把正文里的外链图片抓回自己的存储"
+              @click="importExternal"
+            >
+              {{ importing ? '转存中…' : '⇲ 转存外链图' }}
+            </button>
          </div>
        </div>

@@ -775,16 +993,13 @@ const tbGroups = computed(() => [

        <!-- editor area -->
        <div v-show="mode === 'wysiwyg'" ref="editorEl"></div>
-        <textarea
-          v-show="mode === 'md'"
-          ref="mdPane"
-          class="md-pane"
-          v-model="form.content_md"
-          placeholder="直接写 Markdown…"
-          aria-label="Markdown 正文"
-          @paste="onMdPaste"
-          @drop="onMdDrop"
-        ></textarea>
+        <!-- md 页签：CodeMirror 6（语法高亮/历史/粘贴拖拽上传），markdown 唯一真相源 -->
+        <div v-show="mode === 'md'" ref="mdPane" class="md-pane" aria-label="Markdown 正文"></div>
+
+        <!-- 轻提示栈 -->
+        <div class="toast-stack" aria-live="polite">
+          <div v-for="t in toasts" :key="t.id" class="toast" :class="t.type">{{ t.text }}</div>
+        </div>

        <div class="editor-stats">
          <span><strong>{{ cjkChars }}</strong> 汉字</span>