paper-dynasty-discord/.gitea/workflows/docker-build.yml

# Gitea Actions: Docker Build, Push, and Notify
#
# CI/CD pipeline for Paper Dynasty Discord Bot:
# - Builds Docker images on every push/PR
# - Auto-generates CalVer version (YYYY.MM.BUILD) on main branch merges
# - Pushes to Docker Hub and creates git tag on main
# - Sends Discord notifications on success/failure

name: Build Docker Image

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Full history for tag counting

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # Generate CalVer: YYYY.MM.BUILD
      # BUILD = count of tags matching current month + 1
      - name: Generate CalVer version
        id: meta
        run: |
          YEAR=$(date -u +%Y)
          MONTH=$(date -u +%-m)
          PREFIX="${YEAR}.${MONTH}."

          # Count existing tags for this month
          git fetch --tags
          BUILD=$(git tag -l "${PREFIX}*" | wc -l)
          BUILD=$((BUILD + 1))

          VERSION="${PREFIX}${BUILD}"
          SHA_SHORT=$(echo ${{ github.sha }} | cut -c1-7)

          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          echo "sha_short=${SHA_SHORT}" >> $GITHUB_OUTPUT
          echo "version_sha=${VERSION}-${SHA_SHORT}" >> $GITHUB_OUTPUT
          echo "branch=${{ github.ref_name }}" >> $GITHUB_OUTPUT
          echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT

          echo "CalVer version: ${VERSION}"          

      # Dev build: push with dev + dev-SHA tags (PR/feature branches)
      - name: Build Docker image (dev)
        if: github.ref != 'refs/heads/main'
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: |
            manticorum67/paper-dynasty-discordapp:dev
            manticorum67/paper-dynasty-discordapp:dev-${{ steps.meta.outputs.sha_short }}            
          cache-from: type=registry,ref=manticorum67/paper-dynasty-discordapp:buildcache
          cache-to: type=registry,ref=manticorum67/paper-dynasty-discordapp:buildcache,mode=max

      # Production build: push with latest + CalVer tags (main only)
      - name: Build Docker image (production)
        if: github.ref == 'refs/heads/main'
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: |
            manticorum67/paper-dynasty-discordapp:latest
            manticorum67/paper-dynasty-discordapp:${{ steps.meta.outputs.version }}
            manticorum67/paper-dynasty-discordapp:${{ steps.meta.outputs.version_sha }}            
          cache-from: type=registry,ref=manticorum67/paper-dynasty-discordapp:buildcache
          cache-to: type=registry,ref=manticorum67/paper-dynasty-discordapp:buildcache,mode=max

      # Create git tag and update VERSION file on successful push
      - name: Tag release
        if: success() && github.ref == 'refs/heads/main'
        run: |
          git config user.name "Gitea Actions"
          git config user.email "actions@git.manticorum.com"
          echo "${{ steps.meta.outputs.version }}" > VERSION
          git add VERSION
          git commit -m "chore: bump version to ${{ steps.meta.outputs.version }} [skip ci]" || true
          git tag "${{ steps.meta.outputs.version }}"
          git push origin main --tags          

      - name: Build Summary
        run: |
          echo "## Docker Build Successful" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Image Tags:**" >> $GITHUB_STEP_SUMMARY
          echo "- \`manticorum67/paper-dynasty-discordapp:latest\`" >> $GITHUB_STEP_SUMMARY
          echo "- \`manticorum67/paper-dynasty-discordapp:${{ steps.meta.outputs.version }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- \`manticorum67/paper-dynasty-discordapp:${{ steps.meta.outputs.version_sha }}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Build Details:**" >> $GITHUB_STEP_SUMMARY
          echo "- Branch: \`${{ steps.meta.outputs.branch }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- Commit: \`${{ github.sha }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- Timestamp: \`${{ steps.meta.outputs.timestamp }}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
            echo "Pushed to Docker Hub!" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "Pull with: \`docker pull manticorum67/paper-dynasty-discordapp:latest\`" >> $GITHUB_STEP_SUMMARY
          else
            echo "_PR build - image not pushed to Docker Hub_" >> $GITHUB_STEP_SUMMARY
          fi          

      - name: Discord Notification - Success
        if: success() && github.ref == 'refs/heads/main'
        run: |
          curl -H "Content-Type: application/json" \
            -d '{
              "embeds": [{
                "title": "Paper Dynasty Bot - Build Successful",
                "description": "Docker image built and pushed to Docker Hub",
                "color": 3066993,
                "fields": [
                  {
                    "name": "Version",
                    "value": "`${{ steps.meta.outputs.version }}`",
                    "inline": true
                  },
                  {
                    "name": "Image Tag",
                    "value": "`${{ steps.meta.outputs.version_sha }}`",
                    "inline": true
                  },
                  {
                    "name": "Commit",
                    "value": "`${{ steps.meta.outputs.sha_short }}`",
                    "inline": true
                  },
                  {
                    "name": "Author",
                    "value": "${{ github.actor }}",
                    "inline": true
                  },
                  {
                    "name": "View Run",
                    "value": "[Click here](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})",
                    "inline": false
                  }
                ],
                "timestamp": "${{ steps.meta.outputs.timestamp }}"
              }]
            }' \
            https://discord.com/api/webhooks/1468485116631453840/JALtLV8dO2IWso3tNcntHW8wDgQeMZuLgFKVUeoEY9ig_OPjjm4PmjvzwYebH5l7_Nxv          

      - name: Discord Notification - Failure
        if: failure() && github.ref == 'refs/heads/main'
        run: |
          TIMESTAMP=$(date -u +%Y-%m-%dT%H:%M:%SZ)
          curl -H "Content-Type: application/json" \
            -d '{
              "embeds": [{
                "title": "Paper Dynasty Bot - Build Failed",
                "description": "Docker build encountered an error.",
                "color": 15158332,
                "fields": [
                  {
                    "name": "Branch",
                    "value": "`${{ github.ref_name }}`",
                    "inline": true
                  },
                  {
                    "name": "Commit",
                    "value": "`${{ github.sha }}`",
                    "inline": true
                  },
                  {
                    "name": "Author",
                    "value": "${{ github.actor }}",
                    "inline": true
                  },
                  {
                    "name": "View Logs",
                    "value": "[Click here](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})",
                    "inline": false
                  }
                ],
                "timestamp": "'"$TIMESTAMP"'"
              }]
            }' \
            https://discord.com/api/webhooks/1468485116631453840/JALtLV8dO2IWso3tNcntHW8wDgQeMZuLgFKVUeoEY9ig_OPjjm4PmjvzwYebH5l7_Nxv