name: Gitea Branch PR, SonarQube Analyze, and Merge Workflow

on:
  push:
    branches-ignore:
      - main
  create:
    branches: 
      - '**'

jobs:
  # Job 1: Check if PR exists and create one if the branch is new
  check-and-create-pr:
    runs-on: ubuntu-latest
    outputs:
      pr_created: ${{ steps.check-pr.outputs.pr_created }}
      pr_index: ${{ steps.create-pr.outputs.pr_index }}
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: URL check
        run: |
          echo "URL: ${{ vars.RINOA_GITEA_URL }}/api/v1/repos/${{ github.repository }}/pulls/${{ github.base_ref }}/${{ github.ref_name }}"
          
      # Step 1: Check for an existing PR
      - name: Check if PR Exists
        id: check-pr
        uses: prasiman/gocurl@v1
        with:
          url: ${{ vars.RINOA_GITEA_URL }}/api/v1/repos/${{ github.repository }}/pulls/main/${{ github.ref_name }}
          method: "GET"
          headers: '{ "Authorization": "token ${{ secrets.GITEA_API_TOKEN }}" }'
          accept: 200,201,204,404
          log-response: true

      - name: Extract gocurl Response to Valid JSON
        id: extract-json
        run: |
          RESPONSE='${{ steps.check-pr.outputs.response }}'

          # Extract only the JSON content starting with '{' and ending with '}'
          JSON_RESPONSE=$(echo "$RESPONSE" | grep -oP '\{.*\}' || echo '{}')

          # Validate the JSON using jq
          echo "$JSON_RESPONSE" | jq '.' > valid_response.json || echo '{}' > valid_response.json

          # Output the validated JSON
          echo "response_json=$(cat valid_response.json)" >> $GITHUB_OUTPUT

      - name: Parse PR Response
        id: parse-pr
        uses: yakubique/json-utils@v1.8
        with:
          input: ${{ steps.preprocess-response.outputs.response_json }}
          action: "get"
          key: ""

      # Step 2: Create PR if none exists
      - name: Create PR in Gitea
        if: env.pr_exists == 'false'
        id: create-pr
        uses: arifer612/Gitea-PR-action@v1.2.0
        with:
          url: ${{ vars.RINOA_GITEA_URL }}
          token: ${{ secrets.GITEA_API_TOKEN }}"

  # Job 2: Run SonarQube Analysis
  sonarqube-analysis:
    runs-on: ubuntu-latest
    needs: check-and-create-pr
    outputs:
      quality_gate_status: ${{ steps.quality-gate.outputs.quality-gate-status }}
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      # Step 1: Run SonarQube Scan
      - name: SonarQube Scan
        uses: sonarsource/sonarqube-scan-action@v4.1.0
        env:
          SONAR_HOST_URL: ${{ secrets.SONARQUBE_HOST }}
          SONAR_TOKEN: ${{ secrets.SONARQUBE_TOKEN }}

      # Step 2: SonarQube Quality Gate Check
      - name: SonarQube Quality Gate
        id: quality-gate
        uses: sonarsource/sonarqube-quality-gate-action@v1
        env:
          SONAR_HOST_URL: ${{ secrets.SONARQUBE_HOST }}
          SONAR_TOKEN: ${{ secrets.SONARQUBE_TOKEN }}

      - name: Log Quality Gate Result
        run: |
          echo "Quality Gate Status: ${{ steps.quality-gate.outputs.quality-gate-status }}"

  # Job 3: Merge PR if Quality Gate passes
  merge-pr:
    runs-on: ubuntu-latest
    needs: [check-and-create-pr, sonarqube-analysis]
    if: needs.sonarqube-analysis.outputs.quality_gate_status == 'PASSED'
    steps:
      - name: Merge PR in Gitea
        uses: prasiman/gocurl@v1
        with:
          url: "${{ secrets.GITEA_INSTANCE_URL }}/repos/${{ github.repository_owner }}/${{ github.event.repository.name }}/pulls/${{ needs.check-and-create-pr.outputs.pr_index }}"
          method: "POST"
          headers: '{ "Authorization": "token ${{ secrets.GITEA_API_TOKEN }}", "Content-Type": "application/json" }'
          params: >-
            {
              "Do": "merge",
              "delete_branch_after_merge": true,
              "force_merge": true,
              "merge_when_checks_succeed": true
            }

      - name: Confirm Merge
        run: echo "PR has been successfully merged into main."