More things

frontend/app/pages/wiki/[slug]/index.vue

@@ -1,11 +1,11 @@
 <script setup lang="ts">
-/* The article route is a thin host for the book that ArticleBookStack draws.
-   The open-article middleware has already laid the article on the library's
-   shelf — that is what the page in view is made of, and what the stack of
-   open pages is filed under — so all that is left to do here is speak for the
-   URL: the title, and the visitor's "recently viewed" line.
-   When nothing lives at the address, this is what says so, over the top of
-   whatever else is open. */
+/* The short address — /wiki/<slug>, the shape a wiki link to [[Bayes Theorem]]
+   writes and an old bookmark holds — names no language. The open-article
+   middleware reads which document the slug speaks and turns the address onto
+   that version's own, /wiki/en/bayes-theorem, so this page is what is left of
+   it: the words said when the wiki has nothing at the slug, or the API has no
+   answer about it — an address worth writing, over the top of whatever else is
+   open. */
 definePageMeta({ middleware: 'open-article' })
 
 const route = useRoute()
@@ -14,34 +14,33 @@ const slug = computed(() => String(route.params.slug))
 const { t } = useI18n()
 const { th } = useAppLocale()
 const { get, unreadable } = useArticleLibrary()
-const article = computed(() => get(slug.value))
-
-const { record } = useRecentlyViewed()
-watch(
-  article,
-  (a) => {
-    if (import.meta.client && a?.slug && a?.title) record({ slug: a.slug, title: a.title })
-  },
-  { immediate: true }
-)
-
-useSeoMeta({
-  title: () => article.value?.title ?? t('card.kickerArticle'),
-})
 
 /* what the shelf could not bring in, the API said why */
-const missingStatus = computed(() => (article.value ? 0 : unreadable.value[slug.value] ?? 0))
+const missingStatus = computed(() => (get(slug.value) ? 0 : unreadable.value[slug.value] ?? 0))
+
+useSeoMeta({ title: () => t('card.kickerArticle') })
+
+/* a missing address was never laid on the book, so "back" leads to whatever
+   else is open: the last of the pages still in the stack, if there are any. */
+const { tabs } = useArticleTabs()
+const backHref = computed(() => {
+  const last = tabs.value[tabs.value.length - 1]
+  return last ? tabHref(last) : null
+})
 </script>
 
 <template>
   <div class="reader-host">
-    <div v-if="!article" class="reader-note">
+    <div class="reader-note">
       <div class="empty" style="padding-top: 64px">
         <template v-if="missingStatus === 404">
           <div class="glyph">∄</div>
           <h3>{{ t('reader.notFoundTitle') }}</h3>
           <p v-html="th('reader.notFoundText', { path: `/wiki/${slug}` })"></p>
-          <NuxtLink to="/new" class="btn btn-primary">{{ t('reader.writeTopic') }}</NuxtLink>
+          <div class="empty-actions">
+            <NuxtLink to="/new" class="btn btn-primary">{{ t('reader.writeTopic') }}</NuxtLink>
+            <NuxtLink v-if="backHref" :to="backHref" class="btn btn-ghost">{{ t('reader.backToArticles') }}</NuxtLink>
+          </div>
         </template>
         <template v-else>
           <div class="glyph">!</div>