name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

env:
  NTFY_URL: http://ntfy.observability.svc.cluster.local:80
  REGISTRY: gitea-http.gitea.svc.cluster.local:3000/daviestechlabs
  REGISTRY_HOST: gitea-http.gitea.svc.cluster.local:3000
  IMAGE_NAME: gradio-ui
  KUSTOMIZE_NAMESPACE: ai-ml

jobs:
  lint:
    name: Lint
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up uv
        run: curl -LsSf https://astral.sh/uv/install.sh | sh && echo "$HOME/.local/bin" >> $GITHUB_PATH

      - name: Run ruff check
        run: uvx ruff check .

      - name: Run ruff format check
        run: uvx ruff format --check .

  release:
    name: Release
    runs-on: ubuntu-latest
    needs: [lint]
    if: gitea.ref == 'refs/heads/main' && gitea.event_name == 'push'
    outputs:
      version: ${{ steps.version.outputs.version }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Determine version bump
        id: version
        run: |
          LATEST=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
          VERSION=${LATEST#v}
          IFS='.' read -r MAJOR MINOR PATCH <<< "$VERSION"

          MSG="${{ gitea.event.head_commit.message }}"
          if echo "$MSG" | grep -qiE "^major:|BREAKING CHANGE"; then
            MAJOR=$((MAJOR + 1)); MINOR=0; PATCH=0
            BUMP="major"
          elif echo "$MSG" | grep -qiE "^(minor:|feat:)"; then
            MINOR=$((MINOR + 1)); PATCH=0
            BUMP="minor"
          else
            PATCH=$((PATCH + 1))
            BUMP="patch"
          fi

          NEW_VERSION="v${MAJOR}.${MINOR}.${PATCH}"
          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "bump=$BUMP" >> $GITHUB_OUTPUT
          echo "Bumping $LATEST → $NEW_VERSION ($BUMP)"

      - name: Create and push tag
        run: |
          git config user.name "gitea-actions[bot]"
          git config user.email "actions@git.daviestechlabs.io"
          git tag -a ${{ steps.version.outputs.version }} -m "Release ${{ steps.version.outputs.version }}"
          git push origin ${{ steps.version.outputs.version }}

  docker:
    name: Docker Build & Push
    runs-on: ubuntu-latest
    needs: [lint, release]
    if: gitea.ref == 'refs/heads/main' && gitea.event_name == 'push'
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          buildkitd-config-inline: |
            [registry."gitea-http.gitea.svc.cluster.local:3000"]
              http = true
              insecure = true

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

      - name: Configure Docker for insecure registry
        run: |
          sudo mkdir -p /etc/docker
          echo '{"insecure-registries": ["${{ env.REGISTRY_HOST }}"]}' | sudo tee /etc/docker/daemon.json
          sudo systemctl restart docker || sudo service docker restart || true
          sleep 2

      - name: Login to Gitea Registry
        run: |
          AUTH=$(echo -n "${{ secrets.REGISTRY_USER }}:${{ secrets.REGISTRY_TOKEN }}" | base64 -w0)
          mkdir -p ~/.docker
          cat > ~/.docker/config.json << EOF
          {
            "auths": {
              "${{ env.REGISTRY_HOST }}": {
                "auth": "$AUTH"
              }
            }
          }
          EOF
          echo "Auth configured for ${{ env.REGISTRY_HOST }}"

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}},value=${{ needs.release.outputs.version }}
            type=semver,pattern={{major}}.{{minor}},value=${{ needs.release.outputs.version }}
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  deploy:
    name: Deploy to Kubernetes
    runs-on: ubuntu-latest
    needs: [docker, release]
    if: gitea.ref == 'refs/heads/main' && gitea.event_name == 'push'
    container:
      image: catthehacker/ubuntu:act-latest
      volumes:
        - /secrets/kubeconfig:/secrets/kubeconfig
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install kubectl
        run: |
          curl -LO "https://dl.k8s.io/release/$(curl -Ls https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
          chmod +x kubectl && sudo mv kubectl /usr/local/bin/

      - name: Update image tag in manifests
        env:
          KUBECONFIG: /secrets/kubeconfig/config
        run: |
          VERSION="${{ needs.release.outputs.version }}"
          VERSION="${VERSION#v}"
          for DEPLOY in llm embeddings stt tts; do
            sed -i "s|image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:.*|image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${VERSION}|" "${DEPLOY}.yaml"
          done

      - name: Apply kustomization
        env:
          KUBECONFIG: /secrets/kubeconfig/config
        run: |
          kubectl apply -k . --namespace ${{ env.KUSTOMIZE_NAMESPACE }}

      - name: Rollout restart deployments
        env:
          KUBECONFIG: /secrets/kubeconfig/config
        run: |
          for DEPLOY in llm-ui embeddings-ui stt-ui tts-ui; do
            kubectl rollout restart deployment/${DEPLOY} -n ${{ env.KUSTOMIZE_NAMESPACE }} 2>/dev/null || true
          done

      - name: Wait for rollout
        env:
          KUBECONFIG: /secrets/kubeconfig/config
        run: |
          for DEPLOY in llm-ui embeddings-ui stt-ui tts-ui; do
            kubectl rollout status deployment/${DEPLOY} -n ${{ env.KUSTOMIZE_NAMESPACE }} --timeout=120s 2>/dev/null || true
          done

  notify:
    name: Notify
    runs-on: ubuntu-latest
    needs: [lint, release, docker, deploy]
    if: always()
    steps:
      - name: Notify on success
        if: needs.lint.result == 'success' && needs.docker.result == 'success'
        run: |
          curl -s \
            -H "Title: ✅ CI Passed: ${{ gitea.repository }}" \
            -H "Priority: default" \
            -H "Tags: white_check_mark,github" \
            -H "Click: ${{ gitea.server_url }}/${{ gitea.repository }}/actions/runs/${{ gitea.run_id }}" \
            -d "Branch: ${{ gitea.ref_name }}
          Commit: ${{ gitea.event.head_commit.message || gitea.sha }}
          Release: ${{ needs.release.result == 'success' && needs.release.outputs.version || 'skipped' }}
          Docker: ${{ needs.docker.result }}
          Deploy: ${{ needs.deploy.result }}" \
            ${{ env.NTFY_URL }}/gitea-ci

      - name: Notify on deploy success
        if: needs.deploy.result == 'success'
        run: |
          curl -s \
            -H "Title: 🚀 Deployed: ${{ gitea.repository }}" \
            -H "Priority: default" \
            -H "Tags: rocket,kubernetes" \
            -H "Click: ${{ gitea.server_url }}/${{ gitea.repository }}/actions/runs/${{ gitea.run_id }}" \
            -d "Version: ${{ needs.release.outputs.version }}
          Namespace: ${{ env.KUSTOMIZE_NAMESPACE }}
          Apps: llm-ui, embeddings-ui, stt-ui, tts-ui" \
            ${{ env.NTFY_URL }}/gitea-ci

      - name: Notify on failure
        if: needs.lint.result == 'failure' || needs.docker.result == 'failure' || needs.deploy.result == 'failure'
        run: |
          curl -s \
            -H "Title: ❌ CI Failed: ${{ gitea.repository }}" \
            -H "Priority: high" \
            -H "Tags: x,github" \
            -H "Click: ${{ gitea.server_url }}/${{ gitea.repository }}/actions/runs/${{ gitea.run_id }}" \
            -d "Branch: ${{ gitea.ref_name }}
          Commit: ${{ gitea.event.head_commit.message || gitea.sha }}
          Lint: ${{ needs.lint.result }}
          Docker: ${{ needs.docker.result }}
          Deploy: ${{ needs.deploy.result }}" \
            ${{ env.NTFY_URL }}/gitea-ci