.github/actions/skip-ci/action.yml

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name: "Set Skip Env Var"
description: "Action to set the SKIP_CI environment variable indicating that we should skip CI jobs"
inputs:
  ignore-patterns:
    description: >-
      Set the SKIP_CI environment variable when and only when all the changed files located in one of the path,
      the paths is shell-style pattern.
    required: false
    default: >-
      "*.md"
      "shenyu-dashboard"

runs:
  using: "composite"
  steps:
    - name: Check Changed Files And Set Env Var
      shell: bash
      run: |
        if [ $GITHUB_BASE_REF ]; then
          # Pull Request
          BASE_SHA=$GITHUB_BASE_REF
        else
          # Push
          BASE_SHA=${{ github.event.before }}
        fi

        echo "Base sha is $BASE_SHA, head sha is $GITHUB_SHA"

        if [[ "$BASE_SHA" == "0000000000000000000000000000000000000000" ]]; then
          BASE_SHA="master"
        fi

        git fetch --no-tags --progress --recurse-submodules --depth=1 origin ${BASE_SHA}:origin/${BASE_SHA}
        BASE_SHA=origin/${BASE_SHA}
        echo "Base sha is $BASE_SHA, head sha is $GITHUB_SHA"

        if ! files=$(git --no-pager diff --name-only ${GITHUB_SHA} ${BASE_SHA}); then
          exit 1
        fi

        echo "Ignore pattern:"
        for pattern in $(echo '${{ inputs.ignore-patterns }}'); do
          echo $pattern
        done

        echo "Changed files:"
        for file in ${files}; do
          echo $file
        done

        echo "SKIP_CI=true" >> $GITHUB_ENV
        for file in ${files}; do
          matched=0
          for pattern in $(echo '${{ inputs.ignore-patterns }}'); do
            pattern=$(echo "$pattern" | sed 's/"//g')
            if eval "[[ '$file' == $pattern ]]"; then
              matched=1
              break
            fi
          done
          if [[ "$matched" == "0" ]]; then
            echo "$file doesn't match pattern $(echo '${{ inputs.ignore-patterns }}'), stop checking"
            echo "SKIP_CI=false" >> $GITHUB_ENV
            break
          fi
        done