name: Build & Release
on:
  workflow_dispatch:
  push:
    branches:
      - dev
      - main

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  CPU_CORES: "3"
  FORGEJO_URL: ${{ github.server_url }}

jobs:
  build:
    name: Build ${{ github.ref_name == 'main' && 'mainnet' || 'testnet' }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true
          submodules: false

      - name: Init submodules
        run: |
          git config --global url."http://claude:${{ secrets.RELEASE_TOKEN }}@forgejo-mock:3000/".insteadOf "http://forge.snider.dev:4000/"
          git submodule update --init --recursive
          git submodule foreach --recursive 'git fetch --tags origin 2>/dev/null || true'

      - name: Install build dependencies
        run: |
          apt-get update
          apt-get install -y build-essential git python3 python3-pip autotools-dev pkg-config rpm
          pip install cmake --break-system-packages

      - name: Restore SDK cache
        id: cache
        uses: actions/cache@v4
        with:
          path: |
            ${{ github.workspace }}/build/sdk
            ${{ github.workspace }}/build/bin
          key: ${{ runner.os }}-${{ runner.arch }}-sdk

      - name: Build dependencies
        run: make build-deps CPU_CORES=${{ env.CPU_CORES }}

      - name: Compile
        run: make ${{ github.ref_name == 'main' && 'mainnet' || 'testnet' }} CPU_CORES=${{ env.CPU_CORES }}

      - name: Compute release tag
        id: release
        run: |
          VERSION=$(grep '^BUILD_VERSION:=' Makefile | cut -d'=' -f2)
          if [ "${{ github.ref_name }}" = "main" ]; then
            TAG="v${VERSION}+${{ github.run_number }}"
            PRERELEASE=false
            TITLE="v${VERSION} (build ${{ github.run_number }})"
          else
            TAG="v${VERSION}-beta+${{ github.run_number }}"
            PRERELEASE=true
            TITLE="v${VERSION}-beta (build ${{ github.run_number }})"
          fi
          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
          echo "prerelease=${PRERELEASE}" >> "$GITHUB_OUTPUT"
          echo "title=${TITLE}" >> "$GITHUB_OUTPUT"
          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"

      - name: Create release
        id: create_release
        run: |
          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
            "${FORGEJO_URL}/api/v1/repos/${{ github.repository }}/releases" \
            -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
            -H "Content-Type: application/json" \
            -d "{
              \"tag_name\": \"${{ steps.release.outputs.tag }}\",
              \"target_commitish\": \"${{ github.sha }}\",
              \"name\": \"${{ steps.release.outputs.title }}\",
              \"body\": \"Automated build from \`${{ github.ref_name }}\` branch (run #${{ github.run_number }})\",
              \"draft\": false,
              \"prerelease\": ${{ steps.release.outputs.prerelease }}
            }")
          HTTP_CODE=$(echo "$RESPONSE" | tail -1)
          BODY=$(echo "$RESPONSE" | sed '$d')
          if [ "$HTTP_CODE" -ge 400 ]; then
            echo "Failed to create release (HTTP ${HTTP_CODE}):"
            echo "$BODY"
            exit 1
          fi
          RELEASE_ID=$(echo "$BODY" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
          echo "id=${RELEASE_ID}" >> "$GITHUB_OUTPUT"
          echo "Created release ID: ${RELEASE_ID}"

      - name: Upload release assets
        run: |
          for file in build/packages/lethean-*; do
            [ -f "$file" ] || continue
            FILENAME=$(basename "$file")
            echo "Uploading: ${FILENAME}"
            HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
              "${FORGEJO_URL}/api/v1/repos/${{ github.repository }}/releases/${{ steps.create_release.outputs.id }}/assets?name=${FILENAME}" \
              -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
              -H "Content-Type: application/octet-stream" \
              --data-binary "@${file}")
            if [ "$HTTP_CODE" -ge 400 ]; then
              echo "Failed to upload ${FILENAME} (HTTP ${HTTP_CODE})"
              exit 1
            fi
            echo "Uploaded ${FILENAME} (HTTP ${HTTP_CODE})"
          done

      - name: Prune old releases
        run: |
          TAG_PREFIX="${{ github.ref_name == 'main' && 'v6' || 'v6.*-beta' }}"
          CURRENT_ID="${{ steps.create_release.outputs.id }}"
          echo "Keeping release ${CURRENT_ID}, pruning older ${TAG_PREFIX} releases..."
          PAGE=1
          while true; do
            RELEASES=$(curl -s "${FORGEJO_URL}/api/v1/repos/${{ github.repository }}/releases?limit=50&page=${PAGE}" \
              -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}")
            COUNT=$(echo "$RELEASES" | python3 -c "import sys,json; print(len(json.load(sys.stdin)))" 2>/dev/null || echo 0)
            [ "$COUNT" = "0" ] && break
            echo "$RELEASES" | python3 -c "
          import sys, json, fnmatch
          for r in json.load(sys.stdin):
              rid = r['id']
              tag = r['tag_name']
              if rid == ${CURRENT_ID}:
                  continue
              if fnmatch.fnmatch(tag, '${TAG_PREFIX}*'):
                  print(f'{rid} {tag}')
          " | while read -r RID RTAG; do
              echo "Deleting release ${RTAG} (id=${RID})"
              curl -s -o /dev/null -X DELETE \
                "${FORGEJO_URL}/api/v1/repos/${{ github.repository }}/releases/${RID}" \
                -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}"
              curl -s -o /dev/null -X DELETE \
                "${FORGEJO_URL}/api/v1/repos/${{ github.repository }}/tags/${RTAG}" \
                -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}"
            done
            PAGE=$((PAGE + 1))
          done
          echo "Prune complete"