From b7a948d26d15fb3658ce285fd11f563c95cae5e6 Mon Sep 17 00:00:00 2001
From: Ben Lovy <ben@deciduously.com>
Date: Thu, 9 Jan 2025 16:30:10 -0500
Subject: [PATCH] feat(automation): add action to tag and push packages (#136)

---
 .github/workflows/tag.yml     | 66 +++++++++++++++++++++++++++++++++++
 scripts/package_automation.ts | 31 ++++++++++------
 2 files changed, 86 insertions(+), 11 deletions(-)
 create mode 100644 .github/workflows/tag.yml

diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
new file mode 100644
index 00000000..165cf063
--- /dev/null
+++ b/.github/workflows/tag.yml
@@ -0,0 +1,66 @@
+name: Tag Packages
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  BUN_VERSION: 1.1.43
+  CARGO_TERM_COLOR: always
+  RUST_BINARY_NAME: tangram
+  RUST_REPO: tangramdotdev/tangram
+  RUST_REV: 57c9cd4f999f381c9e03e8ff2ba807b22c0d72b2
+
+jobs:
+  tag-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out workflow repository
+      uses: actions/checkout@v4
+      
+    - name: Check out Rust repository
+      uses: actions/checkout@v4
+      with:
+        repository: ${{ env.RUST_REPO }}
+        path: tangram
+        ref: ${{ env.RUST_REV }}
+    
+    - name: Install Rust toolchain
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        components: rustfmt, clippy
+    
+    - name: Install Bun
+      uses: oven-sh/setup-bun@v1
+      with:
+        bun-version: ${{ env.BUN_VERSION }}
+    
+    - name: Cache Rust dependencies
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          tangram/target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('tangram/**/Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-
+    
+    - name: Build Tangram
+      working-directory: tangram
+      run: cargo build --verbose --release
+
+    - name: Copy Tangram to path
+      run: |
+        mkdir -p ./bin
+        cp ./tangram/target/release/${{ env.RUST_BINARY_NAME }} ./bin/
+        echo "./bin" >> $GITHUB_PATH
+
+    - name: Tag and push all packages
+      shell: bash
+      run: |
+        bun run auto -p
+      
diff --git a/scripts/package_automation.ts b/scripts/package_automation.ts
index 5801d81b..bbb10377 100644
--- a/scripts/package_automation.ts
+++ b/scripts/package_automation.ts
@@ -405,6 +405,7 @@ const checkAction = async (tangram: string, path: string): Promise<Result> => {
 /** Perform the `publish` action for a package name. If the existing tag is out of date, tag and push the new package. */
 const publishAction = async (tangram: string, name: string, path: string): Promise<Result> => {
 	log("publishing...");
+
 	// Check in the package, store the ID.
 	const packageIdResult = await checkinPackage(tangram, path);
 	if (packageIdResult.kind !== "ok") {
@@ -415,19 +416,27 @@ const publishAction = async (tangram: string, name: string, path: string): Promi
 		return result("checkinError", `no ID for ${path}`);
 	}
 
-	log(`tagging ${name}...`);
-	const tagResult = await tagPackage(tangram, name, path);
-	if (tagResult.kind !== "ok") {
-		return tagResult;
-	}
+	// Check if the tag already matches this ID.
+	let existing = await existingTaggedItem(tangram, name);
 
-	// Push the tag.
-	const pushTagResult = await push(tangram, name);
-	if (pushTagResult.kind !== "ok") {
-		return pushTagResult;
-	}
+	if (packageId === existing) {
+		log(`Existing tag for ${name} matches current ID:`, existing);
+		return ok(`${name} unchanged, no action taken.`);
+	} else {
+		log(`tagging ${name}...`);
+		const tagResult = await tagPackage(tangram, name, path);
+		if (tagResult.kind !== "ok") {
+			return tagResult;
+		}
+
+		// Push the tag.
+		const pushTagResult = await push(tangram, name);
+		if (pushTagResult.kind !== "ok") {
+			return pushTagResult;
+		}
 
-	return ok(`tagged ${name}: ${packageId}`);
+		return ok(`tagged ${name}: ${packageId}`);
+	}
 };
 
 /** Perform the upload action for a path. Will do the default build first. */