pr-summary.yml

name: CI PR Summary Pipeline
on:
  pull_request:
    branches:
      - master
  workflow_dispatch:

jobs:
  review:
    runs-on: ubuntu-latest
    env:
      X_API_KEY: ${{ secrets.SYSTEM_API_KEY }}
      X_API_CONSUMER: ${{ secrets.SYSTEM_CONSUMER_UUID }}
      API_HOST: "https://app-gippi-api-s-latest-uksouth.azurewebsites.net/"
      WORKING_DIRECTORY: ${{ github.workspace }}/
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Create a diff file
        run: |
          git diff origin/master...remotes/origin/${{ github.head_ref }} > ${{ env.working_directory }}diff.txt && cat ${{ env.working_directory }}diff.txt

      - name: Generate a response
        run: |
          API_HOST=$(printenv API_HOST)
          WORKING_DIRECTORY=$(printenv WORKING_DIRECTORY)
          X_API_CONSUMER=$(printenv X_API_CONSUMER)
          X_API_KEY=$(printenv X_API_KEY)
          DIFF_FILE="diff.txt"
          RESPONSE_MD_FILE="response.md"

          if [ ! -f "${WORKING_DIRECTORY}${DIFF_FILE}" ]; then
              echo "File ${WORKING_DIRECTORY}${DIFF_FILE} not found."
              exit 1
          fi

          file_contents=$(cat "${WORKING_DIRECTORY}${DIFF_FILE}")
          json_body=$(jq -n --arg pt "pullrequest-summary-perfile" --arg p "$file_contents" '{prompt_type: $pt, prompt: $p}')

          response=$(curl -s -i -X POST "${API_HOST}/predefined" \
              -H "Content-Type: application/json" \
              -H "X-API-CONSUMER: ${X_API_CONSUMER}" \
              -H "X-API-KEY: ${X_API_KEY}" \
              -d "$json_body")

          echo "Response: $response"

          response_code=$(echo "$response" | awk -F' ' '/HTTP\/1.1/{print $2}' | head -n 1)

          if [ "$response_code" -eq 200 ]; then
              echo "File contents sent successfully."
              # Remove headers
              response_body=$(echo "$response" | tail -n +2)
              # Remove more headers
              response_body=$(echo "$response_body" | sed '/^date: /Id' | sed '/^server: /Id' | sed '/^content-length: /Id' | sed '/^content-type: /Id')
              # remove trailing and leading quotes
              response_body=$(echo "$response_body" | sed 's/^"\(.*\)"$/\1/')
              # remove the initial markdown code block ident if it exists
              response_body=$(echo "$response_body" | sed 's/```markdown//')
              # remove the last code block ident
              response_body=$(echo "$response_body" | sed 's/```//')

              # Write to file
              echo -e "$response_body" > "${WORKING_DIRECTORY}${RESPONSE_MD_FILE}"
          else
              # Extract the JSON body from the response
              json_body=$(echo "$response" | awk -v RS='\r\n\r\n' 'END{print}')

              # Extract the "detail" field from the JSON body
              detail=$(echo $json_body | jq -r '.detail')
              echo "Error sending file contents: $response_code"
              echo -e "Request to AEP failed to process with error: $detail" > "${WORKING_DIRECTORY}${RESPONSE_MD_FILE}"
          fi

          if [ $? -eq 0 ]; then
              echo "Response saved as response.md"
          else
              echo "Error writing to file in ${WORKING_DIRECTORY}."
              exit 1
          fi

      - name: Get the response as a variable
        id: get_response
        run: |
          {
            echo 'response<<EOF'
            cat ${WORKING_DIRECTORY}response.md
            echo EOF
          } >> "$GITHUB_ENV"

      - uses: actions/github-script@v7
        with:
          script: |
            const prBody = context.payload.pull_request.body || '';
            const summaryText = '## 🤖AEP PR SUMMARY🤖\n\n_I\'m a bot that generates AI summaries of pull requests, see [AEP](https://kainossoftwareltd.github.io/ai-enhanced-platform/) for more details_\n\n' + process.env.response;
            const updatedBody = prBody.includes('## 🤖AEP PR SUMMARY🤖')
              ? prBody.replace(/## 🤖AEP PR SUMMARY🤖[\s\S]*/, '') + '\n\n' + summaryText
              : prBody + '\n\n' + summaryText;
            github.rest.pulls.update({
              pull_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: updatedBody
            })