action.yml

name: "Package RPi image"
description: "Packages an RPi image as a zip, generates a .md5 and .sha256 files for image and zip"
inputs:
  image_path:
    description: "The path to the image file"
    required: true
outputs:
  image_name:
    description: "The name of the image"
    value: "${{ steps.package-image.outputs.image }}"
  image_sha256:
    description: "The SHA256 sum of the image"
    value: "${{ steps.package-image.outputs.image_sha256 }}"
  image_size:
    description: "The size of the image in bytes"
    value: "${{ steps.package-image.outputs.image_size }}"
  zip_name:
    description: "The name of the packaged image zip"
    value: "${{ steps.package-image.outputs.zip_name }}"
  zip_path:
    description: "The path of the package image zip"
    value: "${{ steps.package-image.outputs.zip_path }}"
  zip_sha256:
    description: "The SHA256 sum of the packaged image zip"
    value: "${{ steps.package-image.outputs.zip_sha256 }}"
  zip_size:
    description: "The size of the packaged image zip in bytes"
    value: "${{ steps.package-image.outputs.zip_size }}"
runs:
  using: "composite"
  steps:
    - name: "📦 Package image"
      id: package-image
      run: |
        IMAGE_PATH="${{ inputs.image_path }}"

        FOLDER=$(dirname "$IMAGE_PATH")
        IMAGE=$(basename "$IMAGE_PATH")
        ZIP="${IMAGE%.*}.zip"
        ZIP_PATH="${IMAGE_PATH%.*}.zip"

        cd $FOLDER

        # md5, sha256 and size of the image

        echo "Calculating checksums of $IMAGE..."

        md5sum $IMAGE > $IMAGE.md5
        sha256sum $IMAGE > $IMAGE.sha256

        IMAGE_SHA256=`cat $IMAGE.sha256 | cut -d ' ' -f 1`
        IMAGE_SIZE=`stat -c %s $IMAGE`

        echo "IMAGE_SHA256: $IMAGE_SHA256"
        echo "IMAGE_SIZE: $IMAGE_SIZE"

        # zip the image

        echo "Zipping $IMAGE to $ZIP..."

        zip $ZIP $IMAGE

        # md5, sha256 and size of the zip

        echo "Calculating checksums of $ZIP..."

        md5sum $ZIP > $ZIP.md5
        sha256sum $ZIP > $ZIP.sha256

        ZIP_SHA256=`cat $ZIP.sha256 | cut -d ' ' -f 1`
        ZIP_SIZE=`stat -c %s $ZIP`

        echo "ZIP_SHA256: $ZIP_SHA256"
        echo "ZIP_SIZE: $ZIP_SIZE"

        # outputs
        
        
        echo "image_name=$IMAGE" >> $GITHUB_OUTPUT
        echo "image_sha256=$IMAGE_SHA256" >> $GITHUB_OUTPUT
        echo "image_size=$IMAGE_SIZE" >> $GITHUB_OUTPUT
        echo "zip_name=$ZIP" >> $GITHUB_OUTPUT
        echo "zip_path=$ZIP_PATH" >> $GITHUB_OUTPUT
        echo "zip_sha256=$ZIP_SHA256" >> $GITHUB_OUTPUT
        echo "zip_size=$ZIP_SIZE" >> $GITHUB_OUTPUT
      shell: bash