name: CI

on:
  push:
    branches:
      - develop
    paths:
      - "bff/**"
      - "services/**"
      - "rpc/**"
      - "pkg/**"
      - ".gitea/workflows/ci.yml"
  workflow_dispatch:

jobs:
  changes:
    runs-on: runner
    outputs:
      matrix: ${{ steps.filter.outputs.matrix }}
    steps:
      - name: Checkout
        uses: https://git.ailuowan.com/deploy/checkout@v4
        with:
          fetch-depth: 0

      - name: Detect changes
        id: filter
        run: |
          SERVICES="bff product admin user ad chore express sale wecom"

          dockerfile_for() {
            case "$1" in
              bff) echo "bff/Dockerfile" ;;
              *)   echo "services/$1/Dockerfile" ;;
            esac
          }

          pattern_for() {
            case "$1" in
              bff) echo '^(bff|pkg|rpc)/|^\.gitea/workflows/ci\.yml$' ;;
              *)   echo "^(services/$1|rpc/$1|pkg)/|^\\.gitea/workflows/ci\\.yml$" ;;
            esac
          }

          build_all=false
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            build_all=true
          else
            before="${{ github.event.before }}"
            if [ -z "$before" ] || [ "$before" = "0000000000000000000000000000000000000000" ]; then
              changed=$(git ls-files)
            else
              changed=$(git diff --name-only "$before" "${{ github.sha }}")
            fi
            echo "changed files:"
            echo "$changed"
          fi

          matrix="["
          first=true
          for svc in $SERVICES; do
            build=false
            if [ "$build_all" = true ]; then
              build=true
            elif echo "$changed" | grep -qE "$(pattern_for "$svc")"; then
              build=true
            fi

            df=$(dockerfile_for "$svc")
            if [ "$first" = true ]; then
              first=false
            else
              matrix="$matrix,"
            fi
            matrix="$matrix{\"name\":\"$svc\",\"dockerfile\":\"$df\",\"build\":\"$build\"}"
            echo "$svc=$build"
          done
          matrix="$matrix]"

          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
          echo "matrix=$matrix"

  docker:
    needs: changes
    runs-on: runner
    name: ${{ matrix.name }}
    strategy:
      fail-fast: false
      matrix:
        include: ${{ fromJSON(needs.changes.outputs.matrix) }}
    env:
      NAME: lone/${{ matrix.name }}
    steps:
      - name: Skip
        if: matrix.build != 'true'
        run: echo "skip ${{ matrix.name }} (no changes)"

      - name: Checkout
        if: matrix.build == 'true'
        uses: https://git.ailuowan.com/deploy/checkout@v4

      - name: Login Registry
        if: matrix.build == 'true'
        run: |
          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login ${{ vars.REGISTRY }} -u "${{ vars.REGISTRY_USERNAME }}" --password-stdin

      - name: Docker build
        if: matrix.build == 'true'
        run: |
          docker buildx use default
          docker buildx build --builder default --load -f "${{ matrix.dockerfile }}" -t "${{ vars.REGISTRY }}/$NAME:latest" .

      - name: Docker push
        if: matrix.build == 'true'
        run: |
          docker push ${{ vars.REGISTRY }}/$NAME:latest