name: ElQL Release

on:
  push:
    branches:
      - main
  repository_dispatch:
    types:
      - el-sdk-updated
      - engram-updated

# ElQL is a set of standalone El programs run against a live Engram server.
# Release validates that all .el files parse and compile (emit valid C) using
# the prod-level El SDK. No compiled binary is produced or published.

jobs:
  build-and-release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Enforce source branch (main ← stage only)
        if: github.event_name == 'pull_request'
        run: |
          SOURCE="${GITHUB_HEAD_REF}"
          if [ "${SOURCE}" != "stage" ]; then
            echo "ERROR: Main branch only accepts PRs from 'stage'. Source was: '${SOURCE}'"
            exit 1
          fi
          echo "Source branch check passed: ${SOURCE} → main"

      - name: Install build dependencies
        run: |
          apt-get update -qq
          apt-get install -y gcc libcurl4-openssl-dev

      # Install El SDK — try GCP Artifact Registry prod first, fall back to Gitea release
      - name: Install El SDK
        env:
          GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
          RELEASE_BASE: https://git.neuralplatform.ai/neuron-technologies/el/releases/download/latest
        run: |
          echo "${GCP_SA_KEY}" > /tmp/gcp-key.json
          apt-get install -y -qq apt-transport-https ca-certificates gnupg curl
          curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | gpg --dearmor -o /usr/share/keyrings/cloud.google.gpg
          echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" > /etc/apt/sources.list.d/google-cloud-sdk.list
          apt-get update -qq && apt-get install -y google-cloud-cli
          gcloud auth activate-service-account --key-file=/tmp/gcp-key.json
          gcloud config set project neuron-785695

          mkdir -p /usr/local/bin /usr/local/lib/el

          LATEST_VERSION=$(gcloud artifacts versions list \
            --repository=foundation-prod \
            --location=us-central1 \
            --project=neuron-785695 \
            --package=el/elc \
            --format="value(name)" 2>/dev/null | sort | tail -1 | sed 's|.*/||' || true)

          if [ -n "${LATEST_VERSION}" ]; then
            gcloud artifacts generic download \
              --repository=foundation-prod \
              --location=us-central1 \
              --project=neuron-785695 \
              --package=el/elc \
              --version="${LATEST_VERSION}" \
              --destination=/usr/local/bin/elc
            chmod +x /usr/local/bin/elc
          else
            echo "Falling back to Gitea latest release..."
            curl -fsSL "${RELEASE_BASE}/elc" -o /usr/local/bin/elc
            chmod +x /usr/local/bin/elc
          fi

          curl -fsSL "${RELEASE_BASE}/el_runtime.c" -o /usr/local/lib/el/el_runtime.c
          curl -fsSL "${RELEASE_BASE}/el_runtime.h" -o /usr/local/lib/el/el_runtime.h

          echo "El SDK installed:"; elc --version || true
          rm -f /tmp/gcp-key.json

      # Compile-check all standalone .el programs
      - name: Compile-check all El programs
        run: |
          PASS=0; FAIL=0
          for f in studio/studio.el test/field_test.el test/language_features_test.el test/llm_test.el studio.el; do
            [ -f "$f" ] || continue
            echo -n "Compiling $f ... "
            if elc "$f" > /dev/null 2>&1; then
              echo "OK"
              PASS=$((PASS+1))
            else
              echo "FAIL"
              elc "$f" 2>&1
              FAIL=$((FAIL+1))
            fi
          done
          echo "Passed: ${PASS}, Failed: ${FAIL}"
          [ "${FAIL}" -eq 0 ]

      # Dispatch elql-updated to downstream dependents (none yet — placeholder)
      - name: Dispatch elql-updated to dependents
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          GITEA_API: https://git.neuralplatform.ai/api/v1
        run: |
          # Add downstream repos here as the dependency graph grows
          echo "elql-updated dispatch ready (no downstream targets configured yet)"
          # Example:
          # curl -sf -X POST \
          #   -H "Authorization: token ${GITEA_TOKEN}" \
          #   -H "Content-Type: application/json" \
          #   "${GITEA_API}/repos/neuron-technologies/some-service/dispatches" \
          #   -d '{"type":"elql-updated","inputs":{"elql_version":"latest","commit":"'"${GITHUB_SHA}"'"}}'