add content change logic to skip build on changelog

a-hariti · a-hariti · commit 80d903adbf6d · 2024-11-09T14:42:26.000+01:00
diff --git a/apps/changelog/has-content-changes.ts b/apps/changelog/has-content-changes.ts
@@ -0,0 +1,30 @@
+import {getChangelogsUncached} from './src/server/utils';
+
+async function checkChanges() {
+  const {hash, changelogs} = await getChangelogsUncached();
+  console.log({changelogs});
+  // extract the hash from the body tag of the live site
+  // example: <body data-content-hash="055114ed2b57063a941b3433ea44074b53e795891fe603cc87cf24b96b32f3bd">
+  const prodHash = await fetch('https://sentry.io/changelog/')
+    .then(r => r.text())
+    .then(html => {
+      const match = html.match(/data-content-hash="([^"]+)"/);
+      return match ? match[1] : null;
+    });
+
+  if (prodHash === null) {
+    console.error('could not find changelogs hash on on live changelog page');
+    // build anyway since we are not sure
+    process.exit(1);
+  }
+
+  if (prodHash !== hash) {
+    console.info('⚠️  changelogs have changed since last deployment');
+    // should build
+    process.exit(1);
+  }
+  console.info('changelogs are up to date');
+  // skip build
+  process.exit(0);
+}
+checkChanges();
diff --git a/apps/changelog/src/server/utils.ts b/apps/changelog/src/server/utils.ts
@@ -1,42 +1,37 @@
-import {prismaClient} from '@/server/prisma-client';
+import {prismaClient} from './prisma-client';
 import {Changelog} from '@prisma/client';
 import {unstable_cache} from 'next/cache';
 
-export const getChangelogs = unstable_cache(
-  async () => {
-    const changelogs = await prismaClient.changelog.findMany({
-      include: {
-        categories: true,
-      },
-      where: {
-        published: true,
-      },
-      orderBy: {
-        publishedAt: 'desc',
-      },
-    });
-    const hashHex = (buffer: ArrayBuffer) => {
-      const hexCodes = Array.from(new Uint8Array(buffer)).map(value =>
-        value.toString(16).padStart(2, '0')
-      );
-      return hexCodes.join('');
-    };
-    const hashChangelogs = (changelogs: Changelog[]) =>
-      crypto.subtle
-        .digest(
-          'SHA-256',
-          new TextEncoder().encode(
-            changelogs
-              .map(changelogs => changelogs.id + ':' + changelogs.updatedAt)
-              .join(',')
-          )
-        )
-        .then(hashHex);
-    return {
-      changelogs,
-      hash: await hashChangelogs(changelogs),
-    };
-  },
-  ['changelogs'],
-  {tags: ['changelogs']}
-);
+const hashHex = (buffer: ArrayBuffer) => {
+  const hexCodes = Array.from(new Uint8Array(buffer)).map(value =>
+    value.toString(16).padStart(2, '0')
+  );
+  return hexCodes.join('');
+};
+
+const hashChangelogs = async (changelogs: Changelog[]) => {
+  return crypto.subtle
+    .digest('SHA-256', new TextEncoder().encode(JSON.stringify(changelogs)))
+    .then(hashHex);
+};
+export const getChangelogsUncached = async () => {
+  const changelogs = await prismaClient.changelog.findMany({
+    include: {
+      categories: true,
+    },
+    where: {
+      published: true,
+    },
+    orderBy: {
+      publishedAt: 'desc',
+    },
+  });
+  return {
+    changelogs,
+    hash: await hashChangelogs(changelogs),
+  };
+};
+
+export const getChangelogs = unstable_cache(getChangelogsUncached, ['changelogs'], {
+  tags: ['changelogs'],
+});
diff --git a/skip-build.sh b/skip-build.sh
@@ -18,6 +18,10 @@ non_content_diff_status=$(git diff HEAD^ HEAD --name-only | grep -vE '^(docs/|pl
 changelog_diff_status=$(git diff HEAD^ HEAD --name-only | grep -vE '^(apps/changelog/|yarn.lock)' | wc -l)
 
 if [[ "$NEXT_PUBLIC_CHANGELOG" === "1" ]] ; then
+  if yarn tsx ./apps/changelog/has-content-changes.ts ; then
+    exit 1
+  fi
+
   if [[ $changelog_diff_status -gt 0 ]] ; then
     exit 1
   else
