name: "Git tag decribe action"
author: m.shein@reglab.ru
description: "Retrive current tag position "

outputs:
  git_tag_desc:
    description: ""
    value: ${{ steps.extract_git_info.outputs.GIT_TAG_DESC }}
  git_branch_name:
    description: ""
    value: ${{ steps.extract_git_info.outputs.GIT_BRANCH_NAME }}
  git_branch_formatted:
    description: "Normalized branch name (xx.xx.xx): true or false"
    value: ${{ steps.extract_git_info.outputs.GIT_BRANCH_FORMATTED }}
  git_build_type:
    description: ""
    value: ${{ steps.extract_git_info.outputs.GIT_BUILD_TYPE }}
  git_sha_short:
    description: ""
    value: ${{ steps.extract_git_info.outputs.GIT_SHA_SHORT }}

runs:
  using: "composite"
  steps:
      -
        name: Extract branch name and tag-description
        shell: bash
        id: extract_git_info
        run: |
          set +e
          echo "GITHUB_REPOSITORY=$GITHUB_REPOSITORY"
          echo "GITHUB_REF_TYPE=$GITHUB_REF_TYPE"
          echo "GITHUB_HEAD_REF=$GITHUB_HEAD_REF"
          echo "GITHUB_REF=$GITHUB_REF"

          # extract branch name and stable/nightly type
          if [ ${GITHUB_REF_TYPE} = "tag" ]; then
            # extract tag name
            GIT_TAG_NAME=$(echo $GITHUB_REF | sed -n -r 's/^refs\/tags\/(.*)$/\1/p')
            echo "GIT_TAG_NAME=$GIT_TAG_NAME"

            # check the tag name is NUM.NUM.NUM.NUM 
            echo ${GIT_TAG_NAME} | sed -n -r '/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/!{q1}'
            if [ $? -ne 0 ]; then
              echo "The unexpected tag name"
              exit 1
            fi

            GIT_BUILD_TYPE="stable"

            # extract branch name A.B.C from the tag name A.B.C.D
            GIT_BRANCH_NAME=$(echo $GIT_TAG_NAME | sed -n -r 's/^(.*)\.[0-9]+.*/\1/p')
          else
            GIT_BUILD_TYPE="nightly"

            # extract branch name as is
            GIT_BRANCH_NAME=$(git branch --show-current)
            GIT_BRANCH_FORMATTED=$(echo $GIT_BRANCH_NAME | grep -E '^[0-9]{1}\.[0-9]{2}\.[0-9]{2}$' | wc -l)
          fi

          # get tag description
          GIT_TAG_DESC=$(git describe --tags 2>/dev/null)
          # Check Tag
          [ -z "${GIT_TAG_DESC}" ] && GIT_TAG_DESC=$GIT_BRANCH_NAME

          # get short tag
          GIT_SHA_SHORT=$(git rev-parse --short HEAD)

          # debug
          echo "GIT_TAG_DESC=$GIT_TAG_DESC"
          echo "GIT_BUILD_TYPE=$GIT_BUILD_TYPE"
          echo "GIT_BRANCH_NAME=$GIT_BRANCH_NAME"
          echo "GIT_SHA_SHORT=$GIT_SHA_SHORT"
          echo "GIT_BRANCH_FORMATTED=$GIT_BRANCH_FORMATTED"
          
          # export to GITHUB_OUTPUT
          echo "GIT_BUILD_TYPE=$GIT_BUILD_TYPE" >> $GITHUB_OUTPUT
          echo "GIT_BRANCH_NAME=$GIT_BRANCH_NAME" >> $GITHUB_OUTPUT
          echo "GIT_TAG_DESC=$GIT_TAG_DESC" >> $GITHUB_OUTPUT
          echo "GIT_SHA_SHORT=$GIT_SHA_SHORT" >> $GITHUB_OUTPUT
          echo "GIT_BRANCH_FORMATTED=$GIT_BRANCH_FORMATTED" >> $GITHUB_OUTPUT