#!/bin/bash

# Check for changes in images/ folder and the builds/ folder
if [ "$(git branch --show-current)" = "master" ]; then
  builds_changes=$(git diff --name-only HEAD^...master | grep -E '^builds/')
  images_changes=$(git diff --name-only HEAD^...master | grep -E '^images/')
else
  builds_changes=$(git diff --name-only master | grep -E '^builds/')
  images_changes=$(git diff --name-only master | grep -E '^images/')
fi

# Run `make all` if there are changes in builds/
if [ -n "$builds_changes" ]; then
  echo "Changes detected in builds/. Running 'make all'..."
  make all && exit 0 || exit 1
fi

# Run specific `make` commands for each changed file in images/
if [ -n "$images_changes" ]; then
  echo "Changes detected in images/. Running specific 'make' commands..."

  # Extract unique paths for `make` commands
  TARGETS=$(echo "$images_changes" | sed -E 's|images/||; s|/[^/]+$||' | sort -u)

  # Prioritize base images first
  BASE_TARGETS=$(echo "$TARGETS" | grep '/base$' || true)
  OTHER_TARGETS=$(echo "$TARGETS" | grep -v '/base$' || true)

  # Build base images first
  for target in $BASE_TARGETS; do
    echo "Running 'make $target' (base image first)..."
    make "$target"
  done

  # Then build other images
  for target in $OTHER_TARGETS; do
    echo "Running 'make $target'..."
    make "$target"
  done
fi

# If no changes, output a message
if [ -z "$builds_changes" ] && [ -z "$images_changes" ]; then
  echo "No relevant changes detected."
fi