name: Increment Version

on:
  push:
    tags:
      - '*.*.*'

jobs:  
  build:
    runs-on: ubuntu-latest
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
       - name: GitHub App token
        id: github_app_token
        uses: tibdex/github-app-token@v1.5.0
        with:
          app_id: ${{ secrets.APP_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}
          installation_id: 22958780

      - uses: actions/checkout@v2
      - name: Fetch Tag and Version Information
        run: |
          TAG=$(echo "${GITHUB_REF#refs/*/}")
          CURRENT_VERSION_ARRAY=($(echo "$TAG" | tr . '\n'))
          BASE=$(IFS=. ; echo "${CURRENT_VERSION_ARRAY[*]:0:2}")
          BASE_X=$(IFS=. ; echo "${CURRENT_VERSION_ARRAY[*]:0:1}.x")
          CURRENT_VERSION=$(IFS=. ; echo "${CURRENT_VERSION_ARRAY[*]:0:3}")
          CURRENT_VERSION_UNDERSCORE=$(IFS=_ ; echo "V_${CURRENT_VERSION_ARRAY[*]:0:3}")
          CURRENT_VERSION_ARRAY[2]=$((CURRENT_VERSION_ARRAY[2]+1))
          NEXT_VERSION=$(IFS=. ; echo "${CURRENT_VERSION_ARRAY[*]:0:3}")
          NEXT_VERSION_UNDERSCORE=$(IFS=_ ; echo "V_${CURRENT_VERSION_ARRAY[*]:0:3}")
          NEXT_VERSION_ID=$(IFS=0 ; echo "${CURRENT_VERSION_ARRAY[*]:0:3}99")
          echo "TAG=$TAG" >> $GITHUB_ENV
          echo "BASE=$BASE" >> $GITHUB_ENV
          echo "BASE_X=$BASE_X" >> $GITHUB_ENV
          echo "CURRENT_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
          echo "CURRENT_VERSION_UNDERSCORE=$CURRENT_VERSION_UNDERSCORE" >> $GITHUB_ENV
          echo "NEXT_VERSION=$NEXT_VERSION" >> $GITHUB_ENV
          echo "NEXT_VERSION_UNDERSCORE=$NEXT_VERSION_UNDERSCORE" >> $GITHUB_ENV
          echo "NEXT_VERSION_ID=$NEXT_VERSION_ID" >> $GITHUB_ENV
      - uses: actions/checkout@v2
        with:
          ref: ${{ env.BASE }}
          token: ${{ steps.github_app_token.outputs.token }}

      - name: Increment Patch Version
        run: |
          echo Incrementing $CURRENT_VERSION to $NEXT_VERSION
          echo "  - \"$CURRENT_VERSION\"" >> .ci/bwcVersions
          sed -i "s/opensearch        = $CURRENT_VERSION/opensearch        = $NEXT_VERSION/g" buildSrc/version.properties
          echo Adding $NEXT_VERSION_UNDERSCORE after $CURRENT_VERSION_UNDERSCORE
          sed -i "s/public static final Version $CURRENT_VERSION_UNDERSCORE = new Version(\([[:digit:]]\+\)\(.*\));/\0\n    public static final Version $NEXT_VERSION_UNDERSCORE = new Version($NEXT_VERSION_ID\2);/g" server/src/main/java/org/opensearch/Version.java
          sed -i "s/CURRENT = $CURRENT_VERSION_UNDERSCORE;/CURRENT = $NEXT_VERSION_UNDERSCORE;/g" server/src/main/java/org/opensearch/Version.java

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ steps.github_app_token.outputs.token }}
          base: ${{ env.BASE }}
          branch: 'create-pull-request/patch-${{ env.BASE }}'
          commit-message: Incremented version to ${{ env.NEXT_VERSION }}
          delete-branch: true
          title: '[AUTO] Incremented version to ${{ env.NEXT_VERSION }}.'
          body: |
            I've noticed that a new tag ${{ env.TAG }} was pushed, and incremented the version from ${{ env.CURRENT_VERSION }} to ${{ env.NEXT_VERSION }}.

      - uses: actions/checkout@v2
        with:
          ref: ${{ env.BASE_X }}
          token: ${{ steps.github_app_token.outputs.token }}

      - name: Add bwc version to .X branch
        run: |
          echo Adding bwc version $NEXT_VERSION after $CURRENT_VERSION
          sed -i "s/- \"$CURRENT_VERSION\"/\0\n  - \"$NEXT_VERSION\"/g" .ci/bwcVersions
          echo Adding $NEXT_VERSION_UNDERSCORE after $CURRENT_VERSION_UNDERSCORE
          sed -i "s/public static final Version $CURRENT_VERSION_UNDERSCORE = new Version(\([[:digit:]]\+\)\(.*\));/\0\n    public static final Version $NEXT_VERSION_UNDERSCORE = new Version($NEXT_VERSION_ID\2);/g" server/src/main/java/org/opensearch/Version.java

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ steps.github_app_token.outputs.token }}
          base: ${{ env.BASE_X }}
          branch: 'create-pull-request/patch-${{ env.BASE_X }}'
          commit-message: Added bwc version ${{ env.NEXT_VERSION }}
          delete-branch: true
          title: '[AUTO] [${{ env.BASE_X }}] Added bwc version ${{ env.NEXT_VERSION }}.'
          body: |
            I've noticed that a new tag ${{ env.TAG }} was pushed, and added a bwc version ${{ env.NEXT_VERSION }}.

      - uses: actions/checkout@v2
        with:
          ref: main
          token: ${{ steps.github_app_token.outputs.token }}

      - name: Add bwc version to main branch
        run: |
          echo Adding bwc version $NEXT_VERSION after $CURRENT_VERSION
          sed -i "s/- \"$CURRENT_VERSION\"/\0\n  - \"$NEXT_VERSION\"/g" .ci/bwcVersions
          echo Adding $NEXT_VERSION_UNDERSCORE after $CURRENT_VERSION_UNDERSCORE
          sed -i "s/public static final Version $CURRENT_VERSION_UNDERSCORE = new Version(\([[:digit:]]\+\)\(.*\));/\0\n    public static final Version $NEXT_VERSION_UNDERSCORE = new Version($NEXT_VERSION_ID\2);/g" server/src/main/java/org/opensearch/Version.java

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ steps.github_app_token.outputs.token }}
          base: main
          branch: 'create-pull-request/patch-main'
          commit-message: Added bwc version ${{ env.NEXT_VERSION }}
          delete-branch: true
          title: '[AUTO] [main] Added bwc version ${{ env.NEXT_VERSION }}.'
          body: |
            I've noticed that a new tag ${{ env.TAG }} was pushed, and added a bwc version ${{ env.NEXT_VERSION }}.