name: Publish Docker Image

on:
  push:
    tags:
      - 'v*'

# Runner disk pressure notes:
# Gitea Actions runners use `catthehacker/ubuntu:act-latest` on a shared host
# with limited overlay space (~40 GB, often 70%+ used at start). Building both
# architectures of both variants on a single runner exhausted disk around the
# nodejs dpkg unpack / git-lfs layer export. To fix this:
#   * smoke test (amd64 only, load into daemon) runs on its own runner
#   * each push target (variant × arch) runs on its own runner, pushes by
#     digest (no local image store), uploads digest as an artifact
#   * a merge job composes the multi-arch manifest with `imagetools create`
# Per-runner disk pressure is now one-quarter of the old single-job peak.

jobs:
  # ── Smoke test (amd64 only, gates the push jobs) ────────────────────
  smoke-base:
    runs-on: ubuntu-latest
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Build and load amd64 image for smoke test
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64
          push: false
          load: true
          tags: opencode-devbox:smoke-base

      - name: Smoke test (amd64)
        run: bash scripts/smoke-test.sh opencode-devbox:smoke-base --variant base

  smoke-omos:
    runs-on: ubuntu-latest
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Build and load amd64 image for smoke test
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64
          push: false
          load: true
          build-args: |
            INSTALL_OMOS=true
          tags: opencode-devbox:smoke-omos

      - name: Smoke test (amd64)
        run: bash scripts/smoke-test.sh opencode-devbox:smoke-omos --variant omos

  # ── Per-arch push (by digest, no local image) ───────────────────────
  build-base:
    runs-on: ubuntu-latest
    needs: smoke-base
    container:
      image: catthehacker/ubuntu:act-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Derive platform slug
        id: platform
        run: |
          PLATFORM_PAIR="${{ matrix.platform }}"
          echo "pair=${PLATFORM_PAIR//\//-}" >> $GITHUB_OUTPUT

      - name: Set up QEMU
        if: matrix.platform != 'linux/amd64'
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Login to Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: ${{ matrix.platform }}
          outputs: type=image,name=${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-base-${{ steps.platform.outputs.pair }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  build-omos:
    runs-on: ubuntu-latest
    needs: smoke-omos
    container:
      image: catthehacker/ubuntu:act-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Derive platform slug
        id: platform
        run: |
          PLATFORM_PAIR="${{ matrix.platform }}"
          echo "pair=${PLATFORM_PAIR//\//-}" >> $GITHUB_OUTPUT

      - name: Set up QEMU
        if: matrix.platform != 'linux/amd64'
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Login to Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: ${{ matrix.platform }}
          build-args: |
            INSTALL_OMOS=true
          outputs: type=image,name=${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-omos-${{ steps.platform.outputs.pair }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  # ── Merge per-arch digests into multi-arch tags ─────────────────────
  merge-base:
    runs-on: ubuntu-latest
    needs: build-base
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-base-*
          merge-multiple: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Login to Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract version from tag
        id: version
        run: echo "version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            -t ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:${{ steps.version.outputs.version }} \
            -t ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:latest \
            $(printf '${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect \
            ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:${{ steps.version.outputs.version }}

  merge-omos:
    runs-on: ubuntu-latest
    needs: build-omos
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Force IPv4 for Docker Hub
        run: echo 'precedence ::ffff:0:0/96  100' >> /etc/gai.conf

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-omos-*
          merge-multiple: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
        with:
          driver-opts: network=host

      - name: Login to Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract version from tag
        id: version
        run: echo "version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            -t ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:${{ steps.version.outputs.version }}-omos \
            -t ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:latest-omos \
            $(printf '${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect \
            ${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox:${{ steps.version.outputs.version }}-omos

  update-description:
    runs-on: ubuntu-latest
    needs: [merge-base, merge-omos]
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Update Docker Hub description
        run: |
          TOKEN=$(curl -s -X POST https://hub.docker.com/v2/auth/token \
            -H "Content-Type: application/json" \
            -d '{"identifier":"${{ vars.DOCKERHUB_USERNAME }}","secret":"${{ secrets.DOCKERHUB_TOKEN }}"}' \
            | jq -r .access_token)
          if [ "$TOKEN" = "null" ] || [ -z "$TOKEN" ]; then
            echo "::error::Failed to authenticate with Docker Hub API"
            exit 1
          fi
          HTTP_CODE=$(jq -n \
            --rawfile full DOCKER_HUB.md \
            --arg short "Portable AI dev environment for opencode. Debian-based with git, Node.js, AWS CLI, and SSH support." \
            '{"full_description": $full, "description": $short}' | \
            curl -s -o /tmp/hub-response.txt -w "%{http_code}" -X PATCH \
              "https://hub.docker.com/v2/repositories/${{ vars.DOCKERHUB_USERNAME }}/opencode-devbox/" \
              -H "Authorization: Bearer $TOKEN" \
              -H "Content-Type: application/json" \
              -d @-)
          echo "Docker Hub API returned: $HTTP_CODE"
          if [ "$HTTP_CODE" != "200" ]; then
            echo "Response body:"
            cat /tmp/hub-response.txt
            echo "::error::Docker Hub description update failed with HTTP $HTTP_CODE"
            exit 1
          fi