name: Deploy Preview

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - run: apt-get update && apt-get install -y jq kustomize

      - run: corepack enable && corepack prepare pnpm@latest --activate

      - run: pnpm install --frozen-lockfile

      - name: Determine changed apps
        id: changes
        run: |
          APPS=$(pnpm turbo build --filter='...[origin/main]' --dry-run=json | jq -r '[.packages[] | select(startswith("@homelab/")) | sub("@homelab/";"") ] | join(",")')
          echo "apps=$APPS" >> "$GITHUB_OUTPUT"

      - name: Build and push images
        if: steps.changes.outputs.apps != ''
        run: |
          echo "${{ gitea.token }}" | docker login gitea.coreworlds.io -u ${{ gitea.actor }} --password-stdin
          IFS=',' read -ra APPS <<< "${{ steps.changes.outputs.apps }}"
          for app in "${APPS[@]}"; do
            docker build \
              -t gitea.coreworlds.io/lazorgurl/homelab-${app}:${{ gitea.sha }} \
              apps/${app}
            docker push gitea.coreworlds.io/lazorgurl/homelab-${app}:${{ gitea.sha }}
          done

      - name: Update image tags in preview overlay
        if: steps.changes.outputs.apps != ''
        run: |
          IFS=',' read -ra APPS <<< "${{ steps.changes.outputs.apps }}"
          for app in "${APPS[@]}"; do
            cd apps/${app}/k8s/overlays/preview
            kustomize edit set image gitea.coreworlds.io/lazorgurl/homelab-${app}=gitea.coreworlds.io/lazorgurl/homelab-${app}:${{ gitea.sha }}
            cd -
          done

      - name: Comment preview URL
        env:
          GITEA_TOKEN: ${{ gitea.token }}
        run: |
          curl -s -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "{\"body\": \"## Preview Deploy\nNamespace: \`preview-${{ gitea.event.number }}\`\nArgoCD will sync automatically.\"}" \
            "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/issues/${{ gitea.event.number }}/comments"