name: SONIX-ML Continuous Training

on:
  # Triggered via Supabase Webhook (Database Changes)
  repository_dispatch:
    types: [shoe_data_changed]
  
  # Allows manual triggering from GitHub Actions tab (for testing)
  workflow_dispatch:

jobs:
  train-and-deploy:
    runs-on: ubuntu-latest
    
    # Standard permissions (overridden by GH_PAT for the push)
    permissions:
      contents: write

    steps:
      # 1. Checkout Code with PERSONAL ACCESS TOKEN
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.GH_PAT }} 
          fetch-depth: 0              # Fetch full history to ensure rebase works
          persist-credentials: true   # Keep the token for the push step

      # 2. Setup Python Environment
      - name: Set up Python 3.11
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: "pip"

      # 3. Install Dependencies
      - name: Install Dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt

      # 4. Execute Training Engine
      # This script connects to Supabase, retrains the model, and saves artifacts.
      - name: Run Training Pipeline
        env:
          SUPABASE_URL: ${{ secrets.SUPABASE_URL }}
          SUPABASE_KEY: ${{ secrets.SUPABASE_KEY }}
          PYTHONPATH: .
        run: python -m src.training.training_engine

      # 5. Commit, Rebase, and Push
      # This step handles version control for the new model artifacts.
      - name: Commit and Push New Artifacts
        run: |
          # Configure Git Identity (Bot)
          git config --local user.email "action@github.com"
          git config --local user.name "SONIX ML Bot"
          
          # Stage the new model artifacts
          git add model_artifacts/
          
          # Commit changes (if any)
          # '|| echo' prevents the workflow from failing if there are no changes
          git commit -m "auto: model retraining complete [skip ci]" || echo "No changes to commit"
          
          # PULL REBASE: Critical to prevent 'race conditions' if the repo changed during training
          git pull --rebase origin main
          
          # Push changes using the GH_PAT credentials from the checkout step
          git push origin main