From cfd50cddce9e7ddf8cabab2f1f1d2abb80357463 Mon Sep 17 00:00:00 2001
From: Gabriel Simmer <gsimmer@protonmail.com>
Date: Tue, 25 Apr 2023 16:13:49 +0100
Subject: [PATCH] Conditionally run tasks

---
 .builds/changed-paths.sh | 31 +++++++++++++++++++++++++++++++
 .builds/tests.yml        | 16 +++++++++++-----
 .builds/website.yml      | 10 ++++++++--
 3 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100644 .builds/changed-paths.sh

diff --git a/.builds/changed-paths.sh b/.builds/changed-paths.sh
new file mode 100644
index 0000000..6cf6d3d
--- /dev/null
+++ b/.builds/changed-paths.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Get the list of changed paths in the latest commit
+changed_paths=$(git diff-tree --no-commit-id --name-only -r HEAD)
+
+# Variables to track changes in specified paths
+source_changed=false
+website_changed=false
+
+# Check if any of the specified paths have changed
+for path in $changed_paths; do
+  if [[ $path == Cargo.* || $path == src/* || $path == .build/* ]]; then
+    source_changed=true
+  elif [[ $path == website/* ]]; then
+    website_changed=true
+  fi
+done
+
+# Determine the result based on the changes detected
+if $source_changed && $website_changed; then
+  result="all"
+elif $source_changed; then
+  result="source"
+elif $website_changed; then
+  result="website"
+else
+  result="none"
+fi
+
+echo "Result: $result"
+exit 0
diff --git a/.builds/tests.yml b/.builds/tests.yml
index a2982e3..7a197a1 100644
--- a/.builds/tests.yml
+++ b/.builds/tests.yml
@@ -11,10 +11,16 @@ environment:
 tasks:
   - check: |
       cd osc-triggers
-      echo "Running nix flake check..."
-      nix flake check
+      export CHANGED_FILES=$(./.builds/changed-paths.sh)
+      if [[ $CHANGED_FILES == "source" || $CHANGED_FILES == "all" ]]; then
+        echo "Running nix flake check..."
+        nix flake check
+      fi
   - mirror-to-github: |
       cd osc-triggers
-      git remote add github git@github.com:$GITHUB_REPO.git
-      ssh-keyscan github.com >> ~/.ssh/known_hosts
-      git push --mirror github
+      export CHANGED_FILES=$(./.builds/changed-paths.sh)
+      if [[ $CHANGED_FILES == "source" || $CHANGED_FILES == "all" ]]; then
+        git remote add github git@github.com:$GITHUB_REPO.git
+        ssh-keyscan github.com >> ~/.ssh/known_hosts
+        git push --mirror github
+      fi
diff --git a/.builds/website.yml b/.builds/website.yml
index feb0884..e934905 100644
--- a/.builds/website.yml
+++ b/.builds/website.yml
@@ -9,6 +9,12 @@ sources:
 tasks:
 - package: |
     cd osc-triggers/website
-    tar -cvz . > ../../site.tar.gz
+    export CHANGED_FILES=$(../.builds/changed-paths.sh)
+    if [[ $CHANGED_FILES == "website" || $CHANGED_FILES == "all" ]]; then
+      tar -cvz . > ../../site.tar.gz
+    fi
 - upload: |
-    hut pages publish -d $site site.tar.gz
+    export CHANGED_FILES=$(./osc-triggers/.builds/changed-paths.sh)
+    if [[ $CHANGED_FILES == "website" || $CHANGED_FILES == "all" ]]; then
+      hut pages publish -d $site site.tar.gz
+    fi