name: '[docker] build docker image'

on:
  workflow_dispatch:
    inputs:
      images:
        description: 'Images (separated by commas)'
        required: true
      tag:
        description: 'TAG'
        default: 'latest'
        required: true
  push:
    branches:
      - master
      - main
    tags-ignore:
      - '**'
    paths:
      - 'buildconfig/docker/**'

jobs:
  changed_images:
    runs-on: ubuntu-latest
    outputs:
      changed_images: ${{ steps.changed_images.outputs.changed_images }}
    steps:
      - name: Get changed images
        id: changed_images
        uses: actions/github-script@v6
        with:
          script: |
            const { basename, sep } = require('path');
            const { appendFileSync } = require('fs');
            const { EOL } = require('os');
            const { eventName } = context;
            const { repos } = github.rest;
            const push = context.payload;

            const changedImages = new Set();

            if (eventName === 'workflow_dispatch') {
              '${{ github.event.inputs.images }}'.split(',').forEach(image => changedImages.add(image.trim()));
            } else if (eventName === 'push') {
              const files = await github.paginate(repos.compareCommits, {
                ...context.repo,
                base: push.before,
                head: push.after,
                per_page: 100
              });

              files.filter(({ status, filename }) =>
                (status === 'added' || status === 'modified' || status === 'changed' || status === 'copied' || status === 'renamed')
                && basename(filename) === 'Dockerfile').forEach(({ filename }) => {
                  changedImages.add(filename.split(sep).slice(-2)[0]);
              });
            }

            appendFileSync(process.env.GITHUB_OUTPUT, `changed_images=${JSON.stringify(Array.from(changedImages))}${EOL}`, { encoding: 'utf8' });

  build_images:
    needs: changed_images
    runs-on: ${{ github.repository == 'Tencent/Hippy' && fromJson('[''self-hosted'', ''linux'', ''shared'']') || 'ubuntu-latest' }}
    strategy:
      matrix:
        images: ${{ fromJson(needs.changed_images.outputs.changed_images) }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Log in
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Get repo owner(in lowercase)
        id: get_owner
        uses: ASzc/change-string-case-action@v2
        with:
          string: ${{ github.repository_owner }}
      - name: Make & Push to ghcr.io
        uses: docker/build-push-action@v4
        with:
          context: buildconfig/docker/${{ matrix.images }}
          push: true
          tags: ghcr.io/${{ steps.get_owner.outputs.lowercase }}/${{ matrix.images }}:${{ github.event.inputs.tag || 'latest' }}