name: Release PR CI

on:
  pull_request:
    branches: [ release-* ]

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  validate-pr:
    runs-on: [ default ]
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3
      - name: Check if link to original PR is added in PR body
        run: |
          ORIGINAL_PR_NUMBER=$(echo "${{ github.event.pull_request.body }}" | grep -o "https://github.cmd.navi-tech.in/${{ github.repository }}/pull/[0-9]*" | grep -o "[0-9]*")
          ORIGINAL_PR_URL="https://github.cmd.navi-tech.in/${{ github.repository }}/pull/$ORIGINAL_PR_NUMBER"

          echo "Original PR Number extracted: $ORIGINAL_PR_NUMBER"
          echo "Original PR Url generated: $ORIGINAL_PR_URL"
          echo "Pull request body: ${{ github.event.pull_request.body }}"

          if [[ "${{ github.event.pull_request.body }}" != *"$ORIGINAL_PR_URL"* ]]; then
            echo "Link to original PR raised against development branch not found in current PR body"
            exit 1
          fi
      - name: Check if PR title matches original PR title
        run: |
          ORIGINAL_PR_NUMBER=$(echo ${{ github.event.pull_request.body }} | grep -o "https://github.cmd.navi-tech.in/${{ github.repository }}/pull/[0-9]*" | grep -o "[0-9]*")
          ORIGINAL_PR_TITLE=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/pulls/$ORIGINAL_PR_NUMBER" | jq -r .title)

          echo "PR Number extracted: $ORIGINAL_PR_NUMBER"
          echo "Original PR title generated: $ORIGINAL_PR_TITLE"
          echo "Current PR title extracted: ${{ github.event.pull_request.title }}"

          if [[ "${{ github.event.pull_request.title }}" != "$ORIGINAL_PR_TITLE" ]]; then
            echo "Current PR title does not match original PR title raised against development branch"
            exit 1
          fi
      - name: Check if original PR is merged in development branch
        run: |
          ORIGINAL_PR_NUMBER=$(echo ${{ github.event.pull_request.body }} | grep -o "https://github.cmd.navi-tech.in/${{ github.repository }}/pull/[0-9]*" | grep -o "[0-9]*")
          ORIGINAL_PR_IS_MERGED=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/pulls/$ORIGINAL_PR_NUMBER" | jq -r '.merged')
          BASE_REF_BRANCH=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/pulls/$ORIGINAL_PR_NUMBER" | jq -r '.base.ref')
          if [[ "$ORIGINAL_PR_IS_MERGED" == "true" && "$BASE_REF_BRANCH" == "development" ]]; then
            echo "Original PR is merged into development branch"
          else
            echo "Original PR number: $ORIGINAL_PR_NUMBER"
            echo "Original PR merge status: $ORIGINAL_PR_IS_MERGED"
            echo "Base branch: $BASE_REF_BRANCH"
            echo "Status: Fail. Original PR is not merged in development branch."
            exit 1
          fi
      - name: Check if current PR changes are subset of original PR changes
        run: |
          ORIGINAL_PR_NUMBER=$(echo "${{ github.event.pull_request.body }}" | grep -o "https://github.cmd.navi-tech.in/${{ github.repository }}/pull/[0-9]*" | grep -o "[0-9]*")
          ORIGINAL_PR_COMMITS=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/pulls/$ORIGINAL_PR_NUMBER/commits" | jq -r '.[].sha')
          ORIGINAL_PR_FILES=()
          for COMMIT_SHA in $ORIGINAL_PR_COMMITS; do
            COMMIT_FILES=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/commits/$COMMIT_SHA" | jq -r '.files[].filename')
            ORIGINAL_PR_FILES+=($COMMIT_FILES)
          done
          ORIGINAL_PR_FILES=$(echo "${ORIGINAL_PR_FILES[@]}" | tr ' ' '\n' | sort -u | tr '\n' ' ')

          echo "Original PR number extracted: $ORIGINAL_PR_NUMBER"
          echo "Original PR commits: $ORIGINAL_PR_COMMITS"
          echo "Original PR files: $ORIGINAL_PR_FILES"

          CURRENT_PR_NUMBER="${{ github.event.pull_request.number }}"
          CURRENT_PR_COMMITS=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/pulls/$CURRENT_PR_NUMBER/commits" | jq -r '.[].sha')
          CURRENT_PR_FILES=()
          for COMMIT_SHA in $CURRENT_PR_COMMITS; do
            COMMIT_FILES=$(curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://github.cmd.navi-tech.in/api/v3/repos/${{ github.repository }}/commits/$COMMIT_SHA" | jq -r '.files[].filename')
            CURRENT_PR_FILES+=($COMMIT_FILES)
          done
          CURRENT_PR_FILES=$(echo "${CURRENT_PR_FILES[@]}" | tr ' ' '\n' | sort -u | tr '\n' ' ')

          echo "Current PR number: $CURRENT_PR_NUMBER"
          echo "Current PR commits: $CURRENT_PR_COMMITS"
          echo "Current PR files: $CURRENT_PR_FILES"

          if [[ ! "$ORIGINAL_PR_FILES" =~ (^|[[:space:]])"$CURRENT_PR_FILES"($|[[:space:]]) ]]; then
            echo "Current pull request changes are not a strict subset of original pull request changes"
            exit 1
          fi