update

- reset() 清空时一并剥离 share 参数，否则重载后分享代码会被写回
- share() 以去掉 query/share 的地址为基址，避免预设代码在 init 里覆盖分享内容
- 打开分享链接前比对本地已存代码，会覆盖用户改动时先弹窗确认
- SQL 分享带上选中的数据表 id，接收方运行结果与分享者一致
- 分享负载的 code/table 字段补类型校验
- 链接损坏或预设加载失败时给出提示，不再静默吞掉
- 剪贴板写入失败时不再提示"已复制"

组件外的 init 阶段拿不到 useMessage()，新增 composables/notice.ts
用 createDiscreteApi 提供提示与确认框，主题跟随 useDark()。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CWT2cy7mkZevZR4WVVfAVu

.github/workflows/deploy.yaml

@@ -9,9 +9,9 @@ jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: 24
           cache: npm

src/composables/code.ts

@@ -1,15 +1,22 @@
 import { useStorage } from "@vueuse/core"
 import copyTextToClipboard from "copy-text-to-clipboard"
 import qs from "query-string"
-import { reactive, ref, watch } from "vue"
+import { nextTick, reactive, ref, watch } from "vue"
 import { formatCode, getCodeByQuery, submit } from "../api"
 import { sources } from "../templates"
 import { Cache, Code, LANGUAGE, Status } from "../types"
 import { atou, utoa } from "../utils"
 import { isMobile } from "./breakpoints"
-import { buildSqlScript, resetSqlTableSelection } from "./sqlTable"
+import { dialog, notice } from "./notice"
+import {
+  buildSqlScript,
+  resetSqlTableSelection,
+  selectSqlTable,
+  selectedTableId,
+} from "./sqlTable"
 
 const defaultLanguage = "python"
+const languages: LANGUAGE[] = ["python", "c", "cpp", "turtle", "sql"]
 
 const cache: Cache = {
   language: useStorage<LANGUAGE>("code_language", defaultLanguage),
@@ -62,6 +69,58 @@ watch(input, (value: string) => {
   cache.input.value = value
 })
 
+interface Shared {
+  lang: LANGUAGE
+  code: string
+  input: string
+  table?: string
+}
+
+// 链接内容完全来自 URL，字段都要校验后才能落到编辑器里
+function parseShared(base64: string): Shared {
+  const data = JSON.parse(atou(base64))
+  const lang = languages.includes(data.lang)
+    ? (data.lang as LANGUAGE)
+    : defaultLanguage
+  return {
+    lang,
+    code: typeof data.code === "string" ? data.code : sources[lang],
+    input: typeof data.input === "string" ? data.input : "",
+    table: typeof data.table === "string" ? data.table : undefined,
+  }
+}
+
+function confirmOverwrite() {
+  return new Promise<boolean>((resolve) => {
+    dialog.warning({
+      title: "打开分享的代码",
+      content: "这会覆盖你当前保存的代码，是否继续？",
+      positiveText: "打开分享",
+      negativeText: "保留我的代码",
+      onPositiveClick: () => resolve(true),
+      onNegativeClick: () => resolve(false),
+      onClose: () => resolve(false),
+      onMaskClick: () => resolve(false),
+    })
+  })
+}
+
+async function applyShared(shared: Shared) {
+  const saved = cache.code[shared.lang].value
+  const safe = saved === sources[shared.lang] || saved === shared.code
+  if (!safe && !(await confirmOverwrite())) return
+
+  cache.code[shared.lang].value = shared.code
+  code.language = shared.lang
+  code.value = shared.code
+  input.value = shared.input
+  if (shared.lang === "sql") {
+    // 切换语言的 watch 会重置选中的表，要等它跑完再应用分享里的表
+    await nextTick()
+    selectSqlTable(shared.table)
+  }
+}
+
 export async function init() {
   code.language = cache.language.value
   code.value = cache.code[code.language].value
@@ -72,24 +131,24 @@ export async function init() {
   const parsed = qs.parse(location.search)
   const base64 = parsed.share as string
   if (base64) {
+    let shared: Shared
     try {
-      const data = JSON.parse(atou(base64))
-      const lang = ["python", "c", "cpp", "turtle", "sql"].includes(data.lang)
-        ? (data.lang as LANGUAGE)
-        : defaultLanguage
-      const sharedCode = data.code ?? sources[lang]
-      cache.code[lang].value = sharedCode
-      code.language = lang
-      code.value = sharedCode
-      input.value = typeof data.input === "string" ? data.input : ""
-    } catch (err) {}
+      shared = parseShared(base64)
+    } catch (err) {
+      notice.error("分享链接已损坏，可能在传输中被截断")
+      return
+    }
+    await applyShared(shared)
+    return
   }
   const preset = parsed.query as string
   if (preset) {
     try {
       const result = await getCodeByQuery(preset)
       code.value = result.data.code
-    } catch (err) {}
+    } catch (err) {
+      notice.error("预设代码加载失败")
+    }
   }
 }
 
@@ -102,7 +161,7 @@ export function reset() {
   cache.code[code.language].value = sources[code.language]
   output.value = ""
   status.value = Status.NotStarted
-  const url = qs.exclude(location.href, ["query"])
+  const url = qs.exclude(location.href, ["query", "share"])
   window.location.href = url
 }
 
@@ -131,15 +190,16 @@ export async function run() {
 }
 
 export function share() {
-  const data = {
+  const data: Shared = {
     lang: code.language,
     code: code.value,
     input: input.value,
   }
+  if (code.language === "sql") data.table = selectedTableId.value
   const base64 = utoa(JSON.stringify(data))
-  copyTextToClipboard(
-    qs.stringifyUrl({ url: location.href, query: { share: base64 } }),
-  )
+  // 基址要去掉 query（预设代码会在 init 里覆盖分享内容）和上一次的 share
+  const url = qs.exclude(location.href, ["query", "share"])
+  return copyTextToClipboard(qs.stringifyUrl({ url, query: { share: base64 } }))
 }
 
 export async function format() {

src/composables/notice.ts

@@ -0,0 +1,15 @@
+import { useDark } from "@vueuse/core"
+import { createDiscreteApi, darkTheme } from "naive-ui"
+import { computed } from "vue"
+
+const isDark = useDark()
+
+// 组件外（如 init 阶段）需要提示时用这套脱离上下文的 API，主题跟随 App.vue
+const api = createDiscreteApi(["message", "dialog"], {
+  configProviderProps: computed(() => ({
+    theme: isDark.value ? darkTheme : null,
+  })),
+})
+
+export const notice = api.message
+export const dialog = api.dialog

src/composables/sqlTable.ts

@@ -1,9 +1,5 @@
 import { ref } from "vue"
-import {
-  buildSetupSql,
-  defaultSqlTableId,
-  sqlTables,
-} from "../data/sqlTables"
+import { buildSetupSql, defaultSqlTableId, sqlTables } from "../data/sqlTables"
 
 export const selectedTableId = ref(defaultSqlTableId)
 
@@ -11,6 +7,13 @@ export function resetSqlTableSelection() {
   selectedTableId.value = defaultSqlTableId
 }
 
+// 分享链接里的表 id 不可信，认不出来就退回默认表
+export function selectSqlTable(id: unknown) {
+  selectedTableId.value = sqlTables.some((item) => item.id === id)
+    ? (id as string)
+    : defaultSqlTableId
+}
+
 // SELECT / WITH 属于查询，直接展示查询结果的列；其余（增删改）回显整张表
 function isQuery(sql: string): boolean {
   return /^\s*(SELECT|WITH)\b/i.test(sql)
@@ -18,8 +21,7 @@ function isQuery(sql: string): boolean {
 
 export function buildSqlScript(studentSql: string) {
   const table =
-    sqlTables.find((item) => item.id === selectedTableId.value) ??
-    sqlTables[0]
+    sqlTables.find((item) => item.id === selectedTableId.value) ?? sqlTables[0]
   const normalizedSql = studentSql.trim().replace(/;?\s*$/, ";")
   if (isQuery(studentSql.trim())) {
     return [buildSetupSql(table), ".headers on", normalizedSql].join("\n\n")

src/desktop/Header.vue

@@ -9,8 +9,11 @@ import { code, loading, run, share, size } from "../composables/code"
 const message = useMessage()
 
 function handleShare() {
-  share()
+  if (share()) {
     message.success("分享链接已复制")
+  } else {
+    message.error("复制失败，请检查浏览器剪贴板权限")
+  }
 }
 </script>
 

src/mobile/Header.vue

@@ -17,8 +17,11 @@ function copy() {
 }
 
 function handleShare() {
-  share()
+  if (share()) {
     message.success("分享链接已复制")
+  } else {
+    message.error("复制失败，请检查浏览器剪贴板权限")
+  }
 }
 
 const menu: DropdownOption[] = [