name: E2E Ensemble Integration Tests

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:

jobs:
  e2e-ensemble-tests:
    name: Run E2E Ensemble Tests
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Install Rust toolchain
      uses: actions-rs/toolchain@v1
      with:
        toolchain: stable
        profile: minimal
        override: true
        components: rustfmt, clippy

    - name: Cache cargo registry
      uses: actions/cache@v3
      with:
        path: ~/.cargo/registry
        key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

    - name: Cache cargo index
      uses: actions/cache@v3
      with:
        path: ~/.cargo/git
        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}

    - name: Cache cargo build
      uses: actions/cache@v3
      with:
        path: target
        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

    - name: Run E2E ensemble integration tests
      run: |
        cargo test -p ml --test e2e_ensemble_integration -- --test-threads=1 --nocapture
      env:
        RUST_BACKTRACE: 1
        RUST_LOG: info

    - name: Generate test coverage (optional)
      run: |
        cargo install cargo-llvm-cov || true
        cargo llvm-cov test -p ml --test e2e_ensemble_integration --html --output-dir coverage_report || true
      continue-on-error: true

    - name: Upload coverage report
      uses: actions/upload-artifact@v3
      if: always()
      with:
        name: e2e-coverage-report
        path: coverage_report/
        retention-days: 30

    - name: Test summary
      if: always()
      run: |
        echo "## E2E Ensemble Integration Test Results" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "✅ All 13 test scenarios executed" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "### Test Scenarios" >> $GITHUB_STEP_SUMMARY
        echo "- Data Pipeline (2 tests)" >> $GITHUB_STEP_SUMMARY
        echo "- Model Prediction (2 tests)" >> $GITHUB_STEP_SUMMARY
        echo "- Hot-Swap Operations (5 tests)" >> $GITHUB_STEP_SUMMARY
        echo "- Paper Trading (1 test)" >> $GITHUB_STEP_SUMMARY
        echo "- Performance Monitoring (2 tests)" >> $GITHUB_STEP_SUMMARY
        echo "- Comprehensive E2E (1 test)" >> $GITHUB_STEP_SUMMARY