name: Get modified files
description: Get modified files
author: tj-actions
inputs:
  token:
    description: 'GITHUB_TOKEN or a Repo scoped PAT'
    required: true
    default: ${{ github.token }}
    
outputs:
  added_files:
    description: List of added files.
    value: ${{ steps.changed-files.outputs.added_files }}
  copied_files:
    description: List of copied files.
    value: ${{ steps.changed-files.outputs.copied_files }}
  deleted_files:
    description: List of deleted files.
    value: ${{ steps.changed-files.outputs.deleted_files }}
  modified_files:
    description: List of modified files.
    value: ${{ steps.changed-files.outputs.modified_files }}
  renamed_files:
    description: List of renamed files.
    value: ${{ steps.changed-files.outputs.renamed_files }}
  changed_files:
    description: List of changed files.
    value: ${{ steps.changed-files.outputs.changed_files }}
  unmerged_files:
    description: List of unmerged files.
    value: ${{ steps.changed-files.outputs.unmerged_files }}
  unknown_files:
    description: List of unknown files.
    value: ${{ steps.changed-files.outputs.unknown_files }}
  all_changed_files:
    description: List of all changed files.
    value: ${{ steps.changed-files.outputs.all_changed_files }}

runs:
  using: 'composite'
  steps:
    - id: changed-files
      run: |
        if [[ -z $GITHUB_BASE_REF ]]; then
          echo "Skipping: This should only run on pull_request.";
          exit 0;
        fi

        TARGET_BRANCH=${GITHUB_BASE_REF}
        CURRENT_BRANCH=${GITHUB_HEAD_REF}

        echo "Getting base branch..."
        git config --local remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
        git config --local --add remote.origin.fetch "+refs/tags/*:refs/tags/*"

        git fetch --depth=1 origin ${TARGET_BRANCH}:${TARGET_BRANCH}

        echo "Getting head sha..."
        
        HEAD_SHA=$(git rev-parse ${TARGET_BRANCH} || true)
        
        read -a ADDED_FILES <<< "$(git diff --diff-filter=A --name-only ${HEAD_SHA} || true)"
        read -a COPIED_FILES <<< "$(git diff --diff-filter=C --name-only ${HEAD_SHA} || true)"
        read -a DELETED_FILES <<< "$(git diff --diff-filter=D --name-only ${HEAD_SHA} || true)"
        read -a MODIFIED_FILES <<< "$(git diff --diff-filter=M --name-only ${HEAD_SHA} || true)"
        read -a RENAMED_FILES <<< "$(git diff --diff-filter=R --name-only ${HEAD_SHA} || true)"
        read -a CHANGED_FILES <<< "$(git diff --diff-filter=T --name-only ${HEAD_SHA} || true)"
        read -a UNMERGED_FILES <<< "$(git diff --diff-filter=U --name-only ${HEAD_SHA} || true)"
        read -a UNKNOWN_FILES <<< "$(git diff --diff-filter=X --name-only ${HEAD_SHA} || true)"
        read -a ALL_CHANGED_FILES <<< "$(git diff --diff-filter='*' --name-only ${HEAD_SHA} || true)"

        echo "Getting diff..."
        echo "::set-output name=added_files::${{ toJSON($ADDED_FILES) }}"
        echo "::set-output name=copied_files::${{ toJSON($COPIED_FILES) }}"
        echo "::set-output name=deleted_files::${{ toJSON($DELETED_FILES) }}"
        echo "::set-output name=modified_files::${{ toJSON($MODIFIED_FILES) }}"
        echo "::set-output name=renamed_files::${{ toJSON($RENAMED_FILES) }}"
        echo "::set-output name=changed_files::${{ toJSON($CHANGED_FILES) }}"
        echo "::set-output name=unmerged_files::${{ toJSON($UNMERGED_FILES) }}"
        echo "::set-output name=unknown_files::${{ toJSON($UNKNOWN_FILES) }}"
        echo "::set-output name=all_changed_files::${{ toJSON($ALL_CHANGED_FILES) }}"
      shell: bash

branding:
  icon: git-pull-request
  color: white