Support lookup by identifier

[x_status_git] / topic.html

diff --git a/topic.html b/topic.html
index 17cb96e014d3b3dd5db652c8113e108dbf10b03f..f0a4a9ef955c9ffc19082f44c69a7d8bb593645f 100644 (file)
--- a/topic.html
+++ b/topic.html
@@ -5,7 +5,7 @@
 body{ Display: Grid; Box-Sizing: Border-Box; Margin: Auto; Padding-Inline: 1REM; Min-Block-Size: 100VH; Inline-Size: 100%; Max-Inline-Size: 45REM; Align-Content: Center; Justify-Content: Stretch; Font-Family: Sans-Serif }
 </STYLE>
 <H1>Topic Feed</H1>
-<NAV><DL></DL></NAV>
+<NAV><P><A HRef=/>Home</A></P><DL></DL></NAV>
 <SCRIPT Type=module>
 const nav = document.body.querySelector("nav")
 const dl = nav.querySelector("dl")
@@ -18,55 +18,67 @@ fetch(`${location}.jsonld`)
   document.body.querySelector("h1").textContent = "subject" in meta
   ? `#${topic}`
   : `@${topic}`
-  if (meta.first != location) {
+  if ("subject" in meta) {
     const a = nav
     .insertBefore(document.createElement("p"), dl)
     .appendChild(document.createElement("a"))
-    a.href = meta.first
+    a.href = "/topics"
+    a.textContent = "Topics" }
+  const { first, prev, next, current, items } = meta
+  if (first && first != location && first != prev) {
+    const a = nav
+    .insertBefore(document.createElement("p"), dl)
+    .appendChild(document.createElement("a"))
+    a.href = first
     a.textContent = "First Page" }
-  if (meta.prev && meta.prev != meta.first) {
+  if (prev) {
     const a = nav
     .insertBefore(document.createElement("p"), dl)
     .appendChild(document.createElement("a"))
-    a.href = meta.prev
+    a.href = prev
     a.textContent = "Previous Page" }
   let prevDate = undefined
-  for (const status of meta.items) {
+  for (const status of items) {
     if (status.created != prevDate) dl.appendChild(document.createElement("dt")).textContent = status.created
     const a = dl
     .appendChild(document.createElement("dd"))
     .appendChild(document.createElement("a"))
     a.href = status["@id"]
-    const summaryText = (() => {
-      try {
-        const d = parser.parseFromString(status.content, "application/xhtml+xml")
-        const div = document.createElement("div")
-        div.appendChild(document.importNode(d.documentElement, true))
-        Object.assign(div.style,
-          { position: "absolute"
-          , top: "-2px"
-          , height: "1px"
-          , width: "1px"
-          , overflow: "hidden" })
-        document.body.appendChild(div)
-        const text = div.innerText
-        document.body.removeChild(div)
-        return text }
-      catch { } })() || "";
-    const chars = Array.from(summaryText.trim().replaceAll(/\s+/gu, " "))
-    a.textContent = chars.length > 28
-    ? "".concat(...chars.slice(0, 27), "…")
-    : summaryText || status.identifier }
-  if (meta.next && meta.next != meta.current) {
+    const { title } = status
+    if (title) a.textContent = title.length > 28
+    ? "".concat(...title.slice(0, 27), "…")
+    : title
+    else {
+      const summaryText = (() => {
+        try {
+          const d = parser.parseFromString(status.content, "application/xhtml+xml")
+          const div = document.createElement("div")
+          div.appendChild(document.importNode(d.documentElement, true))
+          Object.assign(div.style,
+            { position: "absolute"
+            , top: "-2px"
+            , height: "1px"
+            , width: "1px"
+            , overflow: "hidden" })
+          document.body.appendChild(div)
+          const text = div.innerText
+          document.body.removeChild(div)
+          return text }
+        catch { } })() || "";
+      const chars = Array.from(summaryText.trim().replaceAll(/\s+/gu, " "))
+      a.textContent = chars.length > 28
+      ? "".concat(...chars.slice(0, 27), "…")
+      : summaryText || status.identifier } }
+  if (next) {
     const a = nav
     .appendChild(document.createElement("p"))
     .appendChild(document.createElement("a"))
-    a.href = meta.next
+    a.href = next
     a.textContent = "Next Page" }
-  if (meta.current != location) {
+  if (current && current != location && current != next) {
     const a = nav
     .appendChild(document.createElement("p"))
     .appendChild(document.createElement("a"))
-    a.href = meta.current
+    a.href = current
     a.textContent = "Latest Page" } })
 </SCRIPT>