name: Build and Push Docker Image

on:
  push:
    branches:
      - main
      - master

jobs:
  docker:
    runs-on: ubuntu

    container:
      image: docker:27-cli

    steps:
      - name: Install git
        run: |
          apk add --no-cache git

      - name: Clone repository
        run: |
          git clone ${{ github.server_url }}/${{ github.repository }} repo
          cd repo
          git checkout ${{ github.sha }}

      - name: Generate tags
        run: |
          cd repo

          echo "SHORT_SHA=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
          echo "BUILD_DATE=$(date -u +'%Y%m%d-%H%M%S')" >> $GITHUB_ENV

      - name: Set registry
        run: |
          REGISTRY=$(echo "${{ github.server_url }}" | sed 's|https://||')
          echo "REGISTRY=$REGISTRY" >> $GITHUB_ENV

      - name: Set image name
        run: |
          IMAGE_NAME=$(echo "${{ github.repository }}" | tr '[:upper:]' '[:lower:]')
          echo "IMAGE_NAME=$IMAGE_NAME" >> $GITHUB_ENV

      - name: Login to registry
        run: |
          echo "${{ secrets.GITEA_TOKEN }}" | docker login \
            $REGISTRY \
            -u "${{ github.actor }}" \
            --password-stdin

      - name: Build image
        run: |
          cd repo

          docker build \
            -t $REGISTRY/$IMAGE_NAME:latest \
            -t $REGISTRY/$IMAGE_NAME:$SHORT_SHA \
            -t $REGISTRY/$IMAGE_NAME:$BUILD_DATE \
            .

      - name: Push image tags
        run: |
          docker push $REGISTRY/$IMAGE_NAME:latest
          docker push $REGISTRY/$IMAGE_NAME:$SHORT_SHA
          docker push $REGISTRY/$IMAGE_NAME:$BUILD_DATE