From 8e24555d0930b29d8337b3be75e435c1a7a407d5 Mon Sep 17 00:00:00 2001
From: ryan <ryan@distrust.co>
Date: Thu, 18 Jan 2024 18:01:44 -0500
Subject: [PATCH] Makefile: initial commit, add phony review target

---
 Makefile | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Makefile

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..0ebcf57
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+BASE_REF ?= main
+HEAD_REF ?= $(shell git rev-parse HEAD)
+
+.PHONY: review
+review:
+	@echo "Ensuring Cargo.lock is in clean state, not modified"
+	test -z "$(shell git status --porcelain | grep -E 'M +Cargo.lock')"
+	@echo "Ensuring current HEAD_REF is not BASE_REF"
+	test "$(shell git rev-parse $(BASE_REF))" != "$(HEAD_REF)"
+	@echo "Verifying if any changes happened in Cargo.lock that require review"
+	test "$(shell git show $(BASE_REF):Cargo.lock | sha256sum)" != "$(shell git show $(HEAD_REF):Cargo.lock | sha256sum)"
+	$(eval TEMP_REPO := $(shell mktemp -d))
+	git -C $(TEMP_REPO) init
+	# Fetch files for BASE_REF
+	git show $(BASE_REF):Cargo.lock > $(TEMP_REPO)/Cargo.lock
+	CARGO_HOME=$(TEMP_REPO)/cargo-home cargo fetch
+	git -C $(TEMP_REPO) add .
+	git -C $(TEMP_REPO) commit --no-gpg-sign -m "base ref: $(BASE_REF)"
+	# Fetch files for HEAD_REF
+	git show $(HEAD_REF):Cargo.lock > $(TEMP_REPO)/Cargo.lock
+	CARGO_HOME=$(TEMP_REPO)/cargo-home cargo fetch
+	git -C $(TEMP_REPO) add -A .
+	git -C $(TEMP_REPO) difftool HEAD || true
+	rm -rf $(TEMP_REPO)