name: Engram Release

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

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

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

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

      # Install El SDK from the latest release
      - name: Install El SDK
        env:
          GITEA_API: https://git.neuralplatform.ai/api/v1
          RELEASE_BASE: https://git.neuralplatform.ai/neuron-technologies/el/releases/download/latest
        run: |
          mkdir -p /usr/local/bin /usr/local/lib/el

          echo "Downloading elc..."
          curl -fsSL "${RELEASE_BASE}/elc" -o /usr/local/bin/elc
          chmod +x /usr/local/bin/elc

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

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

          echo "El SDK installed:"
          elc --version || true

      # Compile server.el → dist/engram.c
      - name: Compile server.el
        run: |
          mkdir -p dist
          elc src/server.el > dist/engram.c
          echo "Compiled src/server.el → dist/engram.c"

      # Link to produce the engram binary
      - name: Link engram binary
        run: |
          cc -std=c11 -O2 \
            -I /usr/local/lib/el \
            -o dist/engram \
            dist/engram.c \
            /usr/local/lib/el/el_runtime.c \
            -lcurl -lpthread
          echo "Linked dist/engram"
          ls -lh dist/engram

      # Publish / update the `latest` release
      - name: Publish latest release
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          GITEA_API: https://git.neuralplatform.ai/api/v1
          REPO: neuron-technologies/engram
        run: |
          # Delete existing `latest` release if present
          EXISTING_ID=$(curl -sf \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "${GITEA_API}/repos/${REPO}/releases/tags/latest" \
            | python3 -c "import sys,json; d=json.load(sys.stdin); print(d['id'])" 2>/dev/null || true)

          if [ -n "${EXISTING_ID}" ]; then
            echo "Deleting existing release id=${EXISTING_ID}"
            curl -sf -X DELETE \
              -H "Authorization: token ${GITEA_TOKEN}" \
              "${GITEA_API}/repos/${REPO}/releases/${EXISTING_ID}"
          fi

          # Remove stale tag
          curl -sf -X DELETE \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "${GITEA_API}/repos/${REPO}/tags/latest" || true

          # Create new release
          RELEASE_ID=$(curl -sf -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            "${GITEA_API}/repos/${REPO}/releases" \
            -d "{
              \"tag_name\": \"latest\",
              \"name\": \"Engram (latest)\",
              \"body\": \"Latest Engram build from commit ${GITHUB_SHA}.\nBuilt $(date -u +%Y-%m-%dT%H:%M:%SZ).\",
              \"draft\": false,
              \"prerelease\": false
            }" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")

          echo "Created release id=${RELEASE_ID}"

          # Upload engram binary
          echo "Uploading engram binary..."
          curl -sf -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -F "attachment=@dist/engram;filename=engram" \
            "${GITEA_API}/repos/${REPO}/releases/${RELEASE_ID}/assets"

          echo "Release published successfully"

      # Dispatch engram-updated to any downstream dependents
      - name: Dispatch engram-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 "engram-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":"engram-updated","inputs":{"engram_version":"latest","commit":"'"${GITHUB_SHA}"'"}}'