# SPDX-License-Identifier: AGPL-3.0-or-later
name: build image (reusable)

on:
  workflow_call:
    inputs:
      image:
        description: "Image name under ghcr.io/<owner>/ (for example fluxer-api)"
        type: string
        required: true
      dockerfile:
        description: "Path to the Dockerfile to build"
        type: string
        required: true
      context:
        description: "Docker build context"
        type: string
        required: false
        default: "."
      build-version:
        description: "Explicit Fluxer CalVer build version (YYYY.MDD.MICRO, UTC HHMMSS without leading zeroes) to use instead of automatic UTC clock allocation"
        type: string
        required: false
        default: ""
      moving-tags:
        description: "Comma-separated moving tags to repoint at this build"
        type: string
        required: false
        default: "v1,latest"
      extra-build-args:
        description: "Additional Docker build args, one KEY=VALUE entry per line"
        type: string
        required: false
        default: ""
permissions:
  actions: read
  contents: write
  packages: write

concurrency:
  group: publish-${{ inputs.image }}
  cancel-in-progress: false

defaults:
  run:
    shell: bash

env:
  GHCR_OWNER: ${{ github.repository_owner }}

jobs:
  meta:
    name: resolve metadata
    runs-on: ubuntu-24.04
    timeout-minutes: 5
    permissions:
      contents: read
    outputs:
      build_version: ${{ steps.vars.outputs.build_version }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
        env:
          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/gitconfig
      - name: Set up Rust toolchain (CI helpers)
        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9
        with:
          toolchain: "1.93.0"
      - name: Create token
        id: create-token
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1
        with:
          client-id: ${{ vars.FLUXER_CI_APP_ID }}
          private-key: ${{ secrets.FLUXER_CI_APP_KEY }}
          owner: fluxerapp
          repositories: fluxer
          permission-contents: read
      - name: set variables
        id: vars
        env:
          GH_TOKEN: ${{ steps.create-token.outputs.token }}
          FLUXER_BUILD_VERSION: ${{ inputs['build-version'] }}
        run: >-
          tools/ci/run.sh resolve-calver
          --github-output

  build:
    name: build ${{ matrix.platform }}
    needs: meta
    runs-on: ${{ matrix.runner }}
    timeout-minutes: 75
    permissions:
      actions: read
      contents: read
      packages: write
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: amd64
            runner: ubuntu-24.04
          - platform: arm64
            runner: ubuntu-24.04-arm
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
        env:
          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/gitconfig
      - name: resolve source date
        id: source
        run: echo "date=$(TZ=UTC git log -1 --no-show-signature --pretty=%cd --date=format-local:%Y-%m-%dT%H:%M:%SZ)" >> "$GITHUB_OUTPUT"
      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5
      - uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf
        with:
          context: ${{ inputs.context }}
          file: ${{ inputs.dockerfile }}
          push: true
          provenance: mode=min
          platforms: linux/${{ matrix.platform }}
          tags: ghcr.io/${{ env.GHCR_OWNER }}/${{ inputs.image }}:${{ needs.meta.outputs.build_version }}-${{ matrix.platform }}
          build-args: |
            BUILD_VERSION=${{ needs.meta.outputs.build_version }}
            SOURCE_SHA=${{ github.sha }}
            SOURCE_DATE=${{ steps.source.outputs.date }}
            ${{ inputs.extra-build-args }}
          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_OWNER }}/${{ inputs.image }}:buildcache-${{ matrix.platform }}
          cache-to: type=registry,ref=ghcr.io/${{ env.GHCR_OWNER }}/${{ inputs.image }}:buildcache-${{ matrix.platform }},mode=max,image-manifest=true,oci-mediatypes=true,ignore-error=true
        env:
          DOCKER_BUILD_SUMMARY: false
          DOCKER_BUILD_RECORD_UPLOAD: false

  merge:
    name: merge multi-arch manifest
    needs: [meta, build]
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    permissions:
      contents: write
      packages: write
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
        env:
          GIT_CONFIG_GLOBAL: ${{ runner.temp }}/gitconfig
      - name: Set up Rust toolchain (CI helpers)
        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9
        with:
          toolchain: "1.93.0"
      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5
      - uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - name: create and push multi-arch manifest
        env:
          IMAGE: ghcr.io/${{ env.GHCR_OWNER }}/${{ inputs.image }}
          VERSION: ${{ needs.meta.outputs.build_version }}
        run: |
          set -euo pipefail
          docker buildx imagetools create -t "${IMAGE}:${VERSION}" \
            "${IMAGE}:${VERSION}-amd64" \
            "${IMAGE}:${VERSION}-arm64"
          docker buildx imagetools inspect "${IMAGE}:${VERSION}"

      - name: Create token
        id: create-token
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1
        with:
          client-id: ${{ vars.FLUXER_CI_APP_ID }}
          private-key: ${{ secrets.FLUXER_CI_APP_KEY }}
          owner: fluxerapp
          repositories: fluxer
          permission-contents: write
      - name: Publish GitHub release
        env:
          GH_TOKEN: ${{ steps.create-token.outputs.token }}
          SOURCE_SHA: ${{ github.sha }}
          VERSION: ${{ needs.meta.outputs.build_version }}
          RELEASE_BASELINE_SHA: ${{ vars.RELEASE_BASELINE_SHA }}
        run: >-
          tools/ci/run.sh release
          publish
          --component "${{ inputs.image }}"
          --build-version "${VERSION}"
          --source-sha "${SOURCE_SHA}"
          --previous-sha "${RELEASE_BASELINE_SHA}"

      - name: Advance moving image tags
        env:
          MOVING_TAGS: ${{ inputs.moving-tags }}
          VERSION: ${{ needs.meta.outputs.build_version }}
        run: >-
          tools/ci/run.sh image-set
          promote
          --component "${{ inputs.image }}"
          --build-version "${VERSION}"
          --registry "ghcr.io/${{ env.GHCR_OWNER }}"
          --moving-tags "${MOVING_TAGS}"