From 7992a6389dfef2c926df705a20de67efba2d26d9 Mon Sep 17 00:00:00 2001
From: shivaraj-bh <sbh69840@gmail.com>
Date: Tue, 24 Sep 2024 02:15:52 +0530
Subject: [PATCH] ci: Check for conventional commits

---
 .github/workflows/ci.yaml |  2 ++
 dev/flake.lock            | 28 ++++++----------------------
 dev/flake.nix             | 27 +++++++++++++++++++++++++++
 flake.nix                 |  8 ++++++++
 4 files changed, 43 insertions(+), 22 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 3acf834a..6c10e370 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -15,5 +15,7 @@ jobs:
         system: [ x86_64-linux, aarch64-darwin ]
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: om ci
         run: om ci --extra-access-tokens "github.com=${{ secrets.GITHUB_TOKEN }}" run --systems "${{ matrix.system }}"
diff --git a/dev/flake.lock b/dev/flake.lock
index a8512fac..a813ca08 100644
--- a/dev/flake.lock
+++ b/dev/flake.lock
@@ -18,14 +18,16 @@
     },
     "flake-parts": {
       "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1685662779,
-        "narHash": "sha256-cKDDciXGpMEjP1n6HlzKinN0H+oLmNpgeCTzYnsA2po=",
+        "lastModified": 1726153070,
+        "narHash": "sha256-HO4zgY0ekfwO5bX0QH/3kJ/h4KvUDFZg8YpkNwIbg1U=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "71fb97f0d875fd4de4994dfb849f2c75e17eb6c3",
+        "rev": "bcef6817a8b2aa20a5a6dbb19b43e63c5bf8619a",
         "type": "github"
       },
       "original": {
@@ -104,24 +106,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
-      "locked": {
-        "dir": "lib",
-        "lastModified": 1685564631,
-        "narHash": "sha256-8ywr3AkblY4++3lIVxmrWZFzac7+f32ZEhH/A8pNscI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "4f53efe34b3a8877ac923b9350c874e3dcd5dc0a",
-        "type": "github"
-      },
-      "original": {
-        "dir": "lib",
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1680945546,
diff --git a/dev/flake.nix b/dev/flake.nix
index 26e59f28..f18008c7 100644
--- a/dev/flake.nix
+++ b/dev/flake.nix
@@ -2,6 +2,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
     flake-root.url = "github:srid/flake-root";
     treefmt-nix.url = "github:numtide/treefmt-nix";
     pre-commit-hooks-nix = {
@@ -32,6 +33,32 @@
             nixpkgs-fmt.enable = true;
           };
         };
+
+        # TODO: Move this under `CIApps` once `omnix` supports running them automatically
+        # CONSIDER: Generalise the script, see: https://github.com/juspay/services-flake/pull/338/files#r1773042527
+        apps.cz-check = rec {
+          meta.description = program.meta.description;
+          program = pkgs.writeShellApplication {
+            name = "cz-check";
+            runtimeInputs = with pkgs; [ config.pre-commit.settings.tools.commitizen git gnugrep coreutils ];
+            meta.description = "Verify commit messages from the default branch to HEAD follow conventional commit format";
+            text = ''
+              default_branch=$(git remote show origin | grep 'HEAD branch' | cut -d' ' -f5)
+
+              # Get the latest commit on the default branch
+              # rev range using the `default_branch` branch name (e.g. main..HEAD), doesn't work in Github Actions
+              latest_default_commit=$(git rev-parse origin/"$default_branch")
+
+              current_commit=$(git rev-parse HEAD)
+
+              if [ "$latest_default_commit" = "$current_commit" ]; then
+                  echo "No commits to check between $default_branch and HEAD."
+              else
+                  cz check --rev-range "$latest_default_commit"..HEAD
+              fi
+            '';
+          };
+        };
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [
             just
diff --git a/flake.nix b/flake.nix
index 59a62f30..e20c0f7f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,6 +34,14 @@
       dev = {
         inherit overrideInputs;
         dir = "./dev";
+        steps = {
+          custom = {
+            cz-check = {
+              type = "app";
+              name = "cz-check";
+            };
+          };
+        };
       };
       doc = {
         dir = "./doc";