name: Core E2E Tests

# The regtest stack (Bitcoin Core + Fulcrum + mempool/esplora + arkd + emulator)
# is provided by the `regtest` git submodule (arkade-regtest) and driven by its
# zero-dependency Node CLI (`regtest.mjs`). arkd runs from a container image
# (ARKD_IMAGE in .env.regtest); the orchestrator self-funds it on `start`.

on:
  workflow_call:

env:
  CARGO_INCREMENTAL: 0
  CARGO_TERM_COLOR: always

jobs:
  build-tests:
    runs-on: ubuntu-latest
    outputs:
      test-binaries: ${{ steps.find-binaries.outputs.binaries }}

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable

      - uses: Swatinem/rust-cache@v2
        with:
          prefix-key: "e2e_tests"

      - name: Build test binaries
        run: cargo test -p e2e-tests --no-run

      - name: Find test binaries
        id: find-binaries
        run: |
          BINARIES=$(find target/debug/deps -type f -executable -name "e2e_*" | jq -R -s -c 'split("\n")[:-1]')
          echo "binaries=$BINARIES" >> $GITHUB_OUTPUT
          echo "Found test binaries: $BINARIES"

      - name: Upload test binaries
        uses: actions/upload-artifact@v4
        with:
          name: test-binaries
          path: target/debug/deps/e2e_*
          retention-days: 1
          overwrite: true

  run-tests:
    needs: build-tests
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        test-binary: ${{ fromJson(needs.build-tests.outputs.test-binaries) }}

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Download test binaries
        uses: actions/download-artifact@v4
        with:
          name: test-binaries
          path: target/debug/deps

      - name: Show downloaded binaries
        run: ls -la target/debug/deps/

      - name: Make binaries executable
        run: chmod +x target/debug/deps/e2e_*

      # Brings up base + ark (arkd) + emulator. The orchestrator waits for the
      # stack to be ready and self-funds arkd before returning.
      - name: Start regtest stack
        run: node regtest/regtest.mjs start --env .env.regtest --profile emulator

      - name: Run Test Binary
        env:
          INTROSPECTOR_URL: http://127.0.0.1:7073
          REGTEST_DIR: ${{ github.workspace }}/regtest
          TEST_BINARY: ${{ matrix.test-binary }}
        run: |
          test_name=$(basename "$TEST_BINARY")
          echo "Running test: $test_name"
          "$TEST_BINARY" --ignored --test-threads=1 --nocapture

      - name: Print container logs on failure
        if: failure()
        run: |
          echo "=== block height ==="
          node regtest/regtest.mjs rpc getblockcount 2>&1 || echo "(getblockcount failed)"
          echo "=== auto-miner ticks ==="
          docker logs bitcoin-miner 2>&1 | tail -40 || echo "(bitcoin-miner not found)"
          for c in bitcoin fulcrum mempool_web nbxplorer arkd arkd-wallet emulator; do
            echo "=== docker logs $c ==="
            docker logs "$c" 2>&1 || echo "(container $c not found)"
            echo "=== end $c ==="
          done

      - name: Cleanup regtest stack
        if: always()
        run: node regtest/regtest.mjs clean || true