Update release workflow for multi-platform binaries and install script

Author: inem

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Build and Release Go Binary
+name: Build and Release Go Binaries
 
 on:
   push:
@@ -16,13 +16,24 @@ jobs:
         with:
           go-version: '1.21'
 
-      - name: Build binary
+      - name: Build binaries for all platforms
         run: |
-          go build -o commit-msg-go commit-msg.go
+          GOOS=linux   GOARCH=amd64 go build -o commit-msg-go-linux-amd64 commit-msg.go
+          GOOS=linux   GOARCH=arm64 go build -o commit-msg-go-linux-arm64 commit-msg.go
+          GOOS=darwin  GOARCH=amd64 go build -o commit-msg-go-darwin-amd64 commit-msg.go
+          GOOS=darwin  GOARCH=arm64 go build -o commit-msg-go-darwin-arm64 commit-msg.go
+          GOOS=windows GOARCH=amd64 go build -o commit-msg-go-windows-amd64.exe commit-msg.go
+          GOOS=windows GOARCH=arm64 go build -o commit-msg-go-windows-arm64.exe commit-msg.go
 
-      - name: Upload Release Asset
+      - name: Upload Release Assets
         uses: softprops/action-gh-release@v2
         with:
-          files: commit-msg-go
+          files: |
+            commit-msg-go-linux-amd64
+            commit-msg-go-linux-arm64
+            commit-msg-go-darwin-amd64
+            commit-msg-go-darwin-arm64
+            commit-msg-go-windows-amd64.exe
+            commit-msg-go-windows-arm64.exe
         env:
           GITHUB_TOKEN: ${{ secrets.GH_PAT }}

install.sh

@@ -4,7 +4,38 @@ set -e
 HOOK_PATH=".git/hooks/commit-msg"
 BIN_PATH=".git/hooks/commit-msg-go"
 HOOK_URL="https://raw.githubusercontent.com/inem/dotdotdot/main/_git/hooks/commit-msg"
-BIN_URL="https://github.com/inem/dotdotdot/releases/latest/download/commit-msg-go"
+
+# Detect OS and ARCH
+OS=$(uname | tr '[:upper:]' '[:lower:]')
+ARCH=$(uname -m)
+
+case "$ARCH" in
+  x86_64|amd64)
+    ARCH=amd64
+    ;;
+  arm64|aarch64)
+    ARCH=arm64
+    ;;
+  *)
+    echo "Unsupported architecture: $ARCH"
+    exit 1
+    ;;
+esac
+
+case "$OS" in
+  linux|darwin)
+    ;;
+  msys*|cygwin*|mingw*|windowsnt|windows)
+    OS=windows
+    BIN_PATH=".git/hooks/commit-msg-go.exe"
+    ;;
+  *)
+    echo "Unsupported OS: $OS"
+    exit 1
+    ;;
+esac
+
+BIN_URL="https://github.com/inem/dotdotdot/releases/latest/download/commit-msg-go-${OS}-${ARCH}"
 
 if [ ! -d .git/hooks ]; then
   echo "Error: .git/hooks directory not found. Please run this script from the root of your git repository."
@@ -16,7 +47,7 @@ curl -fsSL "$HOOK_URL" -o "$HOOK_PATH"
 chmod +x "$HOOK_PATH"
 echo "Hook installed to $HOOK_PATH"
 
-echo "Downloading Go binary from GitHub Releases..."
+echo "Downloading Go binary for $OS-$ARCH..."
 curl -fsSL "$BIN_URL" -o "$BIN_PATH"
 chmod +x "$BIN_PATH"
 echo "Binary installed to $BIN_PATH"