From 5df453135440faf3ae11de14351ad92a391fa004 Mon Sep 17 00:00:00 2001
From: Aaron Weisberg <144726311+aaron-weisberg-qz@users.noreply.github.com>
Date: Wed, 21 Aug 2024 11:57:44 -0700
Subject: [PATCH] Only show app diffs related to current PR (#50)

* filter by file changes

* remove comments
---
 dist/index.js | 42 +++++++++++++++++++++++++++++++++++++++++-
 src/main.ts   | 44 ++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 83 insertions(+), 3 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index d5c85aa..0402410 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1762,11 +1762,18 @@ function getApps() {
         catch (e) {
             core.error(e);
         }
-        return responseJson.items.filter(app => {
+        const apps = responseJson.items;
+        const repoApps = apps.filter(app => {
             const targetRevision = app.spec.source.targetRevision;
             const targetPrimary = targetRevision === 'master' || targetRevision === 'main' || !targetRevision;
             return (app.spec.source.repoURL.includes(`${github.context.repo.owner}/${github.context.repo.repo}`) && targetPrimary);
         });
+        const changedFiles = yield getChangedFiles();
+        console.log(`Changed files: ${changedFiles.join(', ')}`);
+        const appsAffected = repoApps.filter(app => {
+            return partOfApp(changedFiles, app);
+        });
+        return appsAffected;
     });
 }
 function postDiffComment(diffs) {
@@ -1855,6 +1862,39 @@ _Updated at ${new Date().toLocaleString('en-US', { timeZone: 'America/Los_Angele
         }
     });
 }
+function getChangedFiles() {
+    return __awaiter(this, void 0, void 0, function* () {
+        const { owner, repo } = github.context.repo;
+        const pull_number = github.context.issue.number;
+        const listFilesResponse = yield octokit.rest.pulls.listFiles({
+            owner,
+            repo,
+            pull_number
+        });
+        const changedFiles = listFilesResponse.data.map(file => file.filename);
+        return changedFiles;
+    });
+}
+function partOfApp(changedFiles, app) {
+    const sourcePath = path.normalize(app.spec.source.path);
+    const appPath = getFirstTwoDirectories(sourcePath);
+    return changedFiles.some(file => {
+        const normalizedFilePath = path.normalize(file);
+        return normalizedFilePath.startsWith(appPath);
+    });
+}
+function getFirstTwoDirectories(filePath) {
+    // Normalize the path to handle any inconsistencies
+    const normalizedPath = path.normalize(filePath);
+    // Split the path into parts based on the OS-specific separator
+    const parts = normalizedPath.split(path.sep).filter(Boolean); // filter(Boolean) removes empty strings
+    // Check if the path has at least two segments
+    if (parts.length < 2) {
+        return parts.join(path.sep); // Return the entire path if less than two directories
+    }
+    // Join the first two segments
+    return parts.slice(0, 2).join(path.sep);
+}
 function asyncForEach(array, callback) {
     return __awaiter(this, void 0, void 0, function* () {
         for (let index = 0; index < array.length; index++) {
diff --git a/src/main.ts b/src/main.ts
index 28fd028..b184021 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -106,8 +106,8 @@ async function getApps(): Promise<App[]> {
   } catch (e) {
     core.error(e);
   }
-
-  return (responseJson.items as App[]).filter(app => {
+  const apps = responseJson.items as App[]
+  const repoApps = apps.filter(app => {
     const targetRevision = app.spec.source.targetRevision
     const targetPrimary = targetRevision === 'master' || targetRevision === 'main' || !targetRevision
     return (
@@ -116,6 +116,13 @@ async function getApps(): Promise<App[]> {
       ) && targetPrimary
     );
   });
+
+  const changedFiles = await getChangedFiles();
+  console.log(`Changed files: ${changedFiles.join(', ')}`);
+  const appsAffected = repoApps.filter(app => {
+    return partOfApp(changedFiles, app)
+  });
+  return appsAffected;
 }
 
 interface Diff {
@@ -221,6 +228,39 @@ _Updated at ${new Date().toLocaleString('en-US', { timeZone: 'America/Los_Angele
   }
 }
 
+async function getChangedFiles(): Promise<string[]> {
+  const { owner, repo } = github.context.repo;
+  const pull_number = github.context.issue.number;
+
+  const listFilesResponse = await octokit.rest.pulls.listFiles({
+    owner,
+    repo,
+    pull_number
+  });
+
+  const changedFiles = listFilesResponse.data.map(file => file.filename);
+  return changedFiles;
+}
+
+function partOfApp(changedFiles: string[], app: App): boolean {
+  const sourcePath = path.normalize(app.spec.source.path);
+  const appPath = getFirstTwoDirectories(sourcePath);
+
+  return changedFiles.some(file => {
+    const normalizedFilePath = path.normalize(file);
+    return normalizedFilePath.startsWith(appPath);
+  });
+}
+
+function getFirstTwoDirectories(filePath: string): string {
+  const normalizedPath = path.normalize(filePath);
+  const parts = normalizedPath.split(path.sep).filter(Boolean); // filter(Boolean) removes empty strings
+  if (parts.length < 2) {
+    return parts.join(path.sep); // Return the entire path if less than two directories
+  }
+  return parts.slice(0, 2).join(path.sep);
+}
+
 async function asyncForEach<T>(
   array: T[],
   callback: (item: T, i: number, arr: T[]) => Promise<void>