name: El SDK CI — stage

on:
  push:
    branches:
      - stage
  pull_request:
    branches:
      - stage

jobs:
  build-and-test:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: lang

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

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

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

      # Gen2: compile the bootstrap C source into a working elc binary
      - name: Build elc from bootstrap (gen2)
        run: |
          gcc -O2 \
            -I el-compiler/runtime \
            dist/elc-bootstrap.c \
            el-compiler/runtime/el_runtime.c \
            -lcurl -lpthread \
            -o dist/elc-gen2
          chmod +x dist/elc-gen2
          echo "gen2 elc built"
          dist/elc-gen2 --version || true

      # Gen3: use gen2 to compile the El compiler from its own El source (self-host)
      - name: Self-host: compile El compiler with gen2 (gen3)
        run: |
          mkdir -p dist/platform
          dist/elc-gen2 el-compiler/src/compiler.el > dist/elc-gen3.c
          gcc -O2 \
            -I el-compiler/runtime \
            dist/elc-gen3.c \
            el-compiler/runtime/el_runtime.c \
            -lcurl -lpthread \
            -o dist/platform/elc
          chmod +x dist/platform/elc
          echo "gen3 (self-hosted) elc built"
          dist/platform/elc --version || true

      - name: Run tests — text
        run: |
          ELC="$(pwd)/dist/platform/elc" \
          EL_HOME="$(pwd)" \
          bash tests/text/run.sh

      - name: Run tests — calendar
        run: |
          ELC="$(pwd)/dist/platform/elc" \
          EL_HOME="$(pwd)" \
          bash tests/calendar/run.sh

      - name: Run tests — time
        run: |
          ELC="$(pwd)/dist/platform/elc" \
          EL_HOME="$(pwd)" \
          bash tests/time/run.sh

      - name: Run tests — html_sanitizer
        run: |
          ELC="$(pwd)/dist/platform/elc" \
          EL_HOME="$(pwd)" \
          bash tests/html_sanitizer/run.sh

      - name: Publish El SDK to Artifact Registry (stage)
        env:
          GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
        run: |
          echo "${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

          VERSION="${GITEA_SHA:0:8}"

          gcloud artifacts generic upload \
            --repository=foundation-stage \
            --location=us-central1 \
            --project=neuron-785695 \
            --package=el/elc \
            --version="${VERSION}" \
            --source=dist/platform/elc

          gcloud artifacts generic upload \
            --repository=foundation-stage \
            --location=us-central1 \
            --project=neuron-785695 \
            --package=el/el_runtime.c \
            --version="${VERSION}" \
            --source=el-compiler/runtime/el_runtime.c

          gcloud artifacts generic upload \
            --repository=foundation-stage \
            --location=us-central1 \
            --project=neuron-785695 \
            --package=el/el_runtime.h \
            --version="${VERSION}" \
            --source=el-compiler/runtime/el_runtime.h

          echo "Published El SDK version=${VERSION} to foundation-stage"
          rm -f /tmp/gcp-key.json
