name: CI/CD Pipeline

on:
  push:
    branches:
      - "feature/**"
      - develop
      - main

permissions:
  contents: write
  pull-requests: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v3
        with:
          python-version: 3.9

      - name: Run Tests
        run: python -m unittest discover -s tests

  merge-to-develop:
    needs: build
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/heads/feature/')
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up Git authentication
        run: |
          git config --global user.name "GitHub Actions"
          git config --global user.email "actions@github.com"
          git remote set-url origin https://x-access-token:${{ secrets.GH_TOKEN }}@github.com/${{ github.repository }}

      - name: Ensure develop branch exists
        run: |
          git fetch origin
          if git show-ref --verify --quiet refs/remotes/origin/develop; then
            echo "Develop branch exists."
          else
            echo "Creating develop branch."
            git checkout -b develop
            git push origin develop
          fi

      - name: Merge feature branch to develop
        run: |
          git fetch origin
          git checkout develop
          git merge --no-ff origin/${GITHUB_REF#refs/heads/}
          git push origin develop

  merge-to-main:
    needs: merge-to-develop
    runs-on: ubuntu-latest
    if: success()
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up Git authentication
        run: |
          git config --global user.name "GitHub Actions"
          git config --global user.email "actions@github.com"
          git remote set-url origin https://x-access-token:${{ secrets.GH_TOKEN }}@github.com/${{ github.repository }}

      - name: Merge develop branch to main
        run: |
          git fetch origin
          git checkout main
          git merge --no-ff origin/develop
          git push origin main

  finalize-deployment:
    needs: merge-to-main
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up Git authentication
        run: |
          git config --global user.name "GitHub Actions"
          git config --global user.email "actions@github.com"
          git remote set-url origin https://x-access-token:${{ secrets.GH_TOKEN }}@github.com/${{ github.repository }}

      - name: Sync Develop with Main
        run: |
          git fetch origin
          git checkout develop
          git merge --no-ff origin/main
          git push origin develop