build: use lefthook for git hooks

Makefile

@@ -2,7 +2,7 @@ BIN := $(notdir $(CURDIR))
 
 all:
 	@if [ ! -f ".git/hooks/pre-commit" ]; then \
-		$(MAKE) precommit-install; \
+		$(MAKE) install-hooks; \
 	fi
 	$(MAKE) build
 	$(MAKE) run
@@ -31,28 +31,6 @@ uninstall:
 lint:
 	golangci-lint run ./...
 
-.PHONY: precommit-install
+.PHONY: install-hooks
-precommit-install:
+install-hooks:
-	@echo "Installing pre-commit hooks..."
+	lefthook install
-	@echo "#!/bin/sh\n\nmake precommit" > .git/hooks/pre-commit
-	@chmod +x .git/hooks/pre-commit
-	@echo "Pre-commit hooks installed."
-
-.PHONY: precommit
-precommit:
-	@STAGED_FILES=$$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.go$$'); \
-	if [ -z "$$STAGED_FILES" ]; then \
-		echo "No staged Go files to check."; \
-	else \
-		set -e; \
-		echo "Running pre-commit checks..."; \
-		echo "go fmt"; \
-		go fmt ./...; \
-		git add $$STAGED_FILES; \
-		echo "go vet"; \
-		go vet ./...; \
-		echo "golangci-lint"; \
-		golangci-lint run ./...; \
-		echo "go test"; \
-		go test -v ./...; \
-	fi

lefthook.yml

@@ -0,0 +1,16 @@
+pre-commit:
+  parallel: true
+  commands:
+    fmt:
+      glob: "*.go"
+      run: go fmt ./...
+      stage_fixed: true
+    vet:
+      glob: "*.go"
+      run: go vet ./...
+    lint:
+      glob: "*.go"
+      run: golangci-lint run ./...
+    test:
+      glob: "*.go"
+      run: go test -v ./...