name: Build heartbeat

on:
  push:
    branches: [main]
    paths:
      - '**/*.go'
      - 'go.mod'
      - 'go.sum'
      - '.gitea/workflows/build.yml'
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-24.04

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

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.22'
          cache: true

      - name: Build binary
        run: |
          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o heartbeat ./cmd/heartbeat

      - name: Publish release
        env:
          GITEA_TOKEN: ${{ gitea.token }}
          SERVER_URL: ${{ gitea.server_url }}
          REPO: ${{ gitea.repository }}
          SHA: ${{ gitea.sha }}
        run: |
          set -e
          TAG="build-${SHA::8}"

          # Delete existing release + tag with this name if present (idempotent re-runs)
          EXISTING=$(curl -sf \
            -H "Authorization: token $GITEA_TOKEN" \
            "$SERVER_URL/api/v1/repos/$REPO/releases/tags/$TAG" || true)
          if [ -n "$EXISTING" ]; then
            EXISTING_ID=$(echo "$EXISTING" | jq -r '.id')
            curl -sf -X DELETE \
              -H "Authorization: token $GITEA_TOKEN" \
              "$SERVER_URL/api/v1/repos/$REPO/releases/$EXISTING_ID" || true
            curl -sf -X DELETE \
              -H "Authorization: token $GITEA_TOKEN" \
              "$SERVER_URL/api/v1/repos/$REPO/tags/$TAG" || true
          fi

          # Create a pre-release tagged with the short commit SHA
          RELEASE=$(curl -sf -X POST \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/json" \
            "$SERVER_URL/api/v1/repos/$REPO/releases" \
            -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\",\"prerelease\":true,\"draft\":false}")
          RELEASE_ID=$(echo "$RELEASE" | jq -r '.id')

          # Upload binary as release asset
          curl -sf -X POST \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/octet-stream" \
            "$SERVER_URL/api/v1/repos/$REPO/releases/$RELEASE_ID/assets?name=heartbeat" \
            --data-binary @heartbeat