Support ranking recent changes by recency

This walks back the latest 5 commits to get the changes there before
  skipping back a week to get any remaining changes, then formats them
  all into a proper list.

diff --git a/build.js b/build.js
index da0f78391777e5bf058a43030e5ff13b0f539919..4f996a3232cf7bf195035813e872a8d05111140e 100644 (file)
--- a/build.js
+++ b/build.js
@@ -143,7 +143,7 @@ const getReferenceFromPath = (path) =>
   /Sources\/([A-Z][0-9A-Za-z]*\/[A-Z][0-9A-Za-z]*)\.djot$/u.exec(path)
     ?.[1]?.replace?.("/", ":");
 
-const listOfInternalLinks = (references) => ({
+const listOfInternalLinks = (references, wrapper = ($) => $) => ({
   tag: "bullet_list",
   tight: true,
   style: "*",
@@ -155,7 +155,7 @@ const listOfInternalLinks = (references) => ({
         tag: "list_item",
         children: [{
           tag: "para",
-          children: [{
+          children: [wrapper({
             tag: "link",
             attributes: {
               "data-realm": "internal",
@@ -164,13 +164,34 @@ const listOfInternalLinks = (references) => ({
             },
             reference,
             children: [],
-          }],
+          })],
         }],
       };
     },
   ),
 });
 
+const diffReferences = async (hash) => {
+  const diff = new Deno.Command("git", {
+    args: [
+      "diff-tree",
+      "-r",
+      "-z",
+      "--name-only",
+      "--no-renames",
+      "--diff-filter=AM",
+      hash,
+    ],
+    stdout: "piped",
+    stderr: "piped",
+  }).spawn();
+  const [diffNames] = await Promise.allSettled([
+    new Response(diff.stdout).text(),
+    new Response(diff.stderr).text(),
+  ]).then(logErrorsAndCollectResults);
+  return references(diffNames.split("\0")); // returns an iterable
+};
+
 function* references(paths) {
   for (const path of paths) {
     const reference = getReferenceFromPath(path);
@@ -592,23 +613,42 @@ class GitWikiWebPage {
         } else {
           /* do nothing */
         }
-        const diff = new Deno.Command("git", {
-          args: [
-            "diff",
-            "-z",
-            "--name-only",
-            "--no-renames",
-            "--diff-filter=AM",
-            commit,
-          ],
-          stdout: "piped",
-          stderr: "piped",
-        }).spawn();
-        const [diffNames] = await Promise.allSettled([
-          new Response(diff.stdout).text(),
-          new Response(diff.stderr).text(),
-        ]).then(logErrorsAndCollectResults);
-        return [...references(diffNames.split("\0"))];
+        const results = new Array(6);
+        const seen = new Set();
+        let recency = 5;
+        let current;
+        do {
+          const show = new Deno.Command("git", {
+            args: [
+              "show",
+              "-s",
+              "--format=%H%x00%cI%x00%cD",
+              recency ? `HEAD~${5 - recency}` : commit,
+            ],
+            stdout: "piped",
+            stderr: "piped",
+          }).spawn();
+          const [
+            [hash, dateTime, humanReadable],
+          ] = await Promise.allSettled([
+            new Response(show.stdout).text().then((rev) =>
+              rev.trim().split("\0")
+            ),
+            new Response(show.stderr).text(),
+          ]).then(logErrorsAndCollectResults);
+          const refs = [];
+          current = hash;
+          for (const ref of (await diffReferences(current))) {
+            if (seen.has(ref)) {
+              /* do nothing */
+            } else {
+              refs.push(ref);
+              seen.add(ref);
+            }
+          }
+          results[recency] = { dateTime, humanReadable, refs };
+        } while (recency-- > 0 && current && current != commit);
+        return results;
       })(),
       ...Array.from(
         pages.keys(),
@@ -650,9 +690,39 @@ class GitWikiWebPage {
               const { content, navigation } = (() => {
                 const navigation = [];
                 if (pageRef == "Special:RecentlyChanged") {
-                  navigation.push(
-                    listOfInternalLinks(recentlyChanged),
-                  );
+                  navigation.push({
+                    tag: "bullet_list",
+                    attributes: { class: "recent-changes" },
+                    tight: true,
+                    style: "*",
+                    children: Array.from(function* () {
+                      for (
+                        const [index, result] of recentlyChanged
+                          .entries()
+                      ) {
+                        if (result != null) {
+                          const {
+                            dateTime,
+                            humanReadable,
+                            refs,
+                          } = result;
+                          yield* listOfInternalLinks(refs, (link) => ({
+                            tag: index ? "strong" : "span",
+                            attributes: { "data-recency": `${index}` },
+                            children: [
+                              link,
+                              str` `,
+                              rawInline`<small>(<time dateTime="${dateTime}">`,
+                              str`${humanReadable}`,
+                              rawInline`</time>)</small>`,
+                            ],
+                          })).children;
+                        } else {
+                          /* do nothing */
+                        }
+                      }
+                    }()).reverse(),
+                  });
                 } else {
                   isNavigationPage = false;
                   return { content: e.children, navigation };
@@ -668,7 +738,7 @@ class GitWikiWebPage {
                       level: 1,
                       children: [str`${title}`],
                     },
-                    rawBlock`<details open="">`,
+                    rawBlock`<details id="navigation-about" open="">`,
                     rawBlock`<summary>about this listing</summary>`,
                     ...e.children,
                     rawBlock`</details>`,
@@ -726,7 +796,8 @@ class GitWikiWebPage {
               if (attributes["data-realm"] == "internal") {
                 delete e.reference;
                 if (redLinks.has(reference)) {
-                  e.destination = `/Special:NotFound?path=/${reference}`;
+                  e.destination =
+                    `/Special:NotFound?path=/${reference}`;
                   attributes["data-notfound"] = "";
                 } else {
                   e.destination = `/${reference}`;

diff --git a/style.css b/style.css
index 1d81fd9e2d892a0da1416a0d67b7bd9887c7e4d7..e66d38f1188172895746119afdab6bc0f7f14262 100644 (file)
--- a/style.css
+++ b/style.css
@@ -8,3 +8,9 @@ header.main{ Margin-Block: 0 1REM; Border-Block-End: Thin Solid; Padding-Block:
 header.main h1{ Margin-Block: 0; Font-Size: XX-Large; Font-Style: Italic }
 details:Has(>summary:Last-Child){ Display: None }
 span.sig{ Font-Style: Italic; Font-Weight: Bold }
+strong[data-recency="5"]{ Font-Weight: 900 }
+strong[data-recency="4"]{ Font-Weight: 800 }
+strong[data-recency="3"]{ Font-Weight: 700 }
+strong[data-recency="2"]{ Font-Weight: 600 }
+strong[data-recency="1"]{ Font-Weight: 500 }
+strong[data-recency] time{ Font-Style: Italic }