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# Licensed to the Apache Software Foundation (ASF) under one
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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# specific language governing permissions and limitations
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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:
  paths:
    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"
      "*.txt"
      "skywalking-ui"
      ".asf.yaml"
      ".dlc.yaml"
      ".licenserc.yaml"
      "docs/menu.yml"
      ".github/actions/skip/action.yml"
      ".github/workflows/codeql.yaml"
      "dist-material/release-docs"
      "test/plugin/*"

runs:
  using: "composite"
  steps:
    - name: Check Changed Files And Set Env Var
      shell: bash
      run: |
        if [[ "${{ github.event_name }}" != "pull_request" ]]; then
          exit 0
        fi

        BASE_SHA=$(jq -r '.pull_request.base.sha' $GITHUB_EVENT_PATH)
        echo "Base sha is $BASE_SHA, head sha is $GITHUB_SHA"

        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.paths }}'); 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.paths }}'); 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.paths }}'), stop checking"
            echo "SKIP_CI=false" >> $GITHUB_ENV
            break
          fi
        done