From 0c39d22e8a1bf5e8eb3fdebf12bfa23af7540ffd Mon Sep 17 00:00:00 2001
From: Edward McFarlane <emcfarlane@buf.build>
Date: Fri, 2 Aug 2024 21:29:09 +0200
Subject: [PATCH 1/3] Check input for empty directories

---
 .github/workflows/ci.yaml | 14 ++++++++++++++
 README.md                 |  6 ++++--
 dist/index.js             |  4 ++++
 src/main.ts               |  6 ++++++
 4 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1b15ce4..eeda9d5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -79,6 +79,20 @@ jobs:
         with:
           setup_only: true
       - run: buf --version | grep $BUF_VERSION
+  test-empty-build:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./
+        with:
+          lint: false
+          format: false
+          breaking: false
+          push: false
+          archive: false
+          pr_comment: false
+        continue-on-error: true # build fails
   test-lint:
     runs-on: ubuntu-latest
     needs: build
diff --git a/README.md b/README.md
index 7c7d9d6..26e4cca 100644
--- a/README.md
+++ b/README.md
@@ -32,8 +32,10 @@ jobs:
   buf:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: bufbuild/buf-action@v1
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Run Buf
+        uses: bufbuild/buf-action@v1
         with:
           token: ${{ secrets.BUF_TOKEN }}
 ```
diff --git a/dist/index.js b/dist/index.js
index 2592202..6598321 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -45828,6 +45828,10 @@ async function runWorkflow(bufPath, inputs, moduleNames) {
     const steps = {};
     steps.build = await build(bufPath, inputs);
     if (steps.build.status == Status.Failed) {
+        if (steps.build.stderr.match(/had no .proto files/)) {
+            core.info("Empty repository detected, ensure the repository is checked out");
+            return steps;
+        }
         return steps;
     }
     const checks = await Promise.all([
diff --git a/src/main.ts b/src/main.ts
index d0d3ddf..a309369 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -153,6 +153,12 @@ async function runWorkflow(
   const steps: Steps = {};
   steps.build = await build(bufPath, inputs);
   if (steps.build.status == Status.Failed) {
+    if (steps.build.stderr.match(/had no .proto files/)) {
+      core.info(
+        "Empty repository detected, ensure the repository is checked out",
+      );
+      return steps;
+    }
     return steps;
   }
   const checks = await Promise.all([

From 69a7b9d1286123dd4833827d5f68ff76e01b1867 Mon Sep 17 00:00:00 2001
From: Edward McFarlane <emcfarlane@buf.build>
Date: Tue, 6 Aug 2024 18:49:35 +0200
Subject: [PATCH 2/3] Update error message

---
 dist/index.js | 3 +--
 src/main.ts   | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index 6598321..8b5b3db 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -45829,8 +45829,7 @@ async function runWorkflow(bufPath, inputs, moduleNames) {
     steps.build = await build(bufPath, inputs);
     if (steps.build.status == Status.Failed) {
         if (steps.build.stderr.match(/had no .proto files/)) {
-            core.info("Empty repository detected, ensure the repository is checked out");
-            return steps;
+            core.info('Did you forget to add the "actions/checkout@v4" checkout step to your workflow?');
         }
         return steps;
     }
diff --git a/src/main.ts b/src/main.ts
index a309369..43ad520 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -155,9 +155,8 @@ async function runWorkflow(
   if (steps.build.status == Status.Failed) {
     if (steps.build.stderr.match(/had no .proto files/)) {
       core.info(
-        "Empty repository detected, ensure the repository is checked out",
+        'Did you forget to add the "actions/checkout@v4" checkout step to your workflow?',
       );
-      return steps;
     }
     return steps;
   }

From e316bf08ec5f26eecd49579dbf2ec2143a80de95 Mon Sep 17 00:00:00 2001
From: Edward McFarlane <3036610+emcfarlane@users.noreply.github.com>
Date: Tue, 6 Aug 2024 20:06:51 +0200
Subject: [PATCH 3/3] Update README.md

---
 README.md | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 26e4cca..7c7d9d6 100644
--- a/README.md
+++ b/README.md
@@ -32,10 +32,8 @@ jobs:
   buf:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-      - name: Run Buf
-        uses: bufbuild/buf-action@v1
+      - uses: actions/checkout@v4
+      - uses: bufbuild/buf-action@v1
         with:
           token: ${{ secrets.BUF_TOKEN }}
 ```