# Builds the agent as a multi-arch image and publishes to GHCR on every
# tag matching `v*`. The image gets three tags:
#   ghcr.io/tronosfera/backupy-agent:vX.Y.Z   (always)
#   ghcr.io/tronosfera/backupy-agent:vX.Y     (always)
#   ghcr.io/tronosfera/backupy-agent:latest   (only on non-prerelease tags)
#
# Uses the workflow's GITHUB_TOKEN — no extra secrets needed.

name: release

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag to (re-)build (e.g. v0.1.0)"
        required: true

permissions:
  contents: read
  packages: write

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.tag || github.ref }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: linux/amd64,linux/arm64

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Derive metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository_owner }}/backupy-agent
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest,enable=${{ !contains(github.ref_name, '-') }}
          labels: |
            org.opencontainers.image.title=backupy-agent
            org.opencontainers.image.description=Open-source backup agent for backupy.tronosfera.ru
            org.opencontainers.image.licenses=Apache-2.0
            org.opencontainers.image.source=https://github.com/${{ github.repository }}

      - name: Build & push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: apps/agent/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ github.ref_name }}
            COMMIT=${{ github.sha }}
            BUILD_DATE=${{ github.event.repository.updated_at }}
          cache-from: type=gha
          cache-to: type=gha,mode=max