name: Build & Deploy

on:
  push:
    branches:
      - '**'
    tags:
      - 'v*'
  workflow_dispatch:
    inputs:
      skip_checks:
        description: 'Skip tests? (true/false)'
        required: false
        default: 'false'

env:
  PUPPETEER_SKIP_DOWNLOAD: "true"
  COREPACK_NPM_REGISTRY: "https://registry.npmmirror.com"

concurrency:
  group: deploy-pipeline
  cancel-in-progress: true

jobs:
  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 1: Prepare Environment
  # ──────────────────────────────────────────────────────────────────────────────
  prepare:
    name: 🔍 Prepare
    runs-on: docker
    outputs:
      target:           ${{ steps.determine.outputs.target }}
      image_tag:        ${{ steps.determine.outputs.image_tag }}
      env_file:         ${{ steps.determine.outputs.env_file }}
      traefik_host:     ${{ steps.determine.outputs.traefik_host }}
      traefik_rule:     ${{ steps.determine.outputs.traefik_rule }}
      next_public_url:  ${{ steps.determine.outputs.next_public_url }}
      project_name:     ${{ steps.determine.outputs.project_name }}
      short_sha:        ${{ steps.determine.outputs.short_sha }}
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: 🧹 Maintenance (High Density Cleanup)
        shell: bash
        run: |
          echo "Purging old build layers and dangling images..."
          docker image prune -f
          docker builder prune -f --filter "until=24h"

      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: 🔍 Environment ermitteln
        id: determine
        shell: bash
        run: |
          REF="${{ github.ref_name }}"
          SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
          DOMAIN="klz-cables.com"
          PRJ="klz"

          if [[ "${{ github.ref_type }}" == "branch" && "$REF" == "main" ]]; then
            TARGET="testing"
            IMAGE_TAG="main-${SHORT_SHA}"
            ENV_FILE=".env.testing"
            TRAEFIK_HOST="testing.${DOMAIN}"
          elif [[ "${{ github.ref_type }}" == "tag" ]]; then
            if [[ "$REF" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
              TARGET="production"
              IMAGE_TAG="$REF"
              ENV_FILE=".env.prod"
              TRAEFIK_HOST="${DOMAIN}, www.${DOMAIN}"
            else
              TARGET="staging"
              IMAGE_TAG="$REF"
              ENV_FILE=".env.staging"
              TRAEFIK_HOST="staging.${DOMAIN}"
            fi
          else
            TARGET="branch"
            SLUG=$(echo "$REF" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/-/g' | sed 's/--*/-/g' | sed 's/^-//;s/-$//')
            IMAGE_TAG="branch-${SLUG}-${SHORT_SHA}"
            ENV_FILE=".env.branch-${SLUG}"
            TRAEFIK_HOST="${SLUG}.branch.mintel.me"
          fi

          # Standardize Traefik Rule (escaped backticks for Traefik v3)
          if [[ "$TRAEFIK_HOST" == *","* ]]; then
            TRAEFIK_RULE=$(echo "$TRAEFIK_HOST" | sed 's/,/ /g' | awk '{for(i=1;i<=NF;i++) printf "Host(\x60%s\x60)%s", $i, (i==NF?"":" || ")}')
            PRIMARY_HOST=$(echo "$TRAEFIK_HOST" | cut -d',' -f1 | sed 's/ //g')
          else
            TRAEFIK_RULE='Host(`'"$TRAEFIK_HOST"'`)'
            PRIMARY_HOST="$TRAEFIK_HOST"
          fi
          
          GATEKEEPER_HOST="gatekeeper.$PRIMARY_HOST"

          {
            echo "target=$TARGET"
            echo "image_tag=$IMAGE_TAG"
            echo "env_file=$ENV_FILE"
            echo "traefik_host=$PRIMARY_HOST"
            echo "traefik_rule=$TRAEFIK_RULE"
            echo "gatekeeper_host=$GATEKEEPER_HOST"
            echo "next_public_url=https://$PRIMARY_HOST"
            if [[ "$TARGET" == "production" ]]; then
              echo "project_name=klz-cablescom"
            elif [[ "$TARGET" == "branch" ]]; then
              echo "project_name=$PRJ-branch-$SLUG"
            else
              echo "project_name=$PRJ-$TARGET"
            fi
            echo "short_sha=$SHORT_SHA"
          } >> "$GITHUB_OUTPUT"

          # ⏳ Wait for Upstream Packages/Images if Tagged
          if [[ "${{ github.ref_type }}" == "tag" ]]; then
            echo "🔎 Checking for @mintel dependencies in package.json..."
            # Extract any @mintel/ version (they should be synced in monorepo)
            UPSTREAM_VERSION=$(grep -o '"@mintel/.*": "[^"]*"' package.json | grep -v "next-utils" | cut -d'"' -f4 | sed 's/\^//; s/\~//' | sort -V | tail -1)
            TAG_TO_WAIT="v$UPSTREAM_VERSION"
            
            if [[ -n "$UPSTREAM_VERSION" && "$UPSTREAM_VERSION" != "workspace:"* ]]; then
              # 1. Discovery (Works without token for public repositories)
              UPSTREAM_SHA=$(git ls-remote --tags https://git.infra.mintel.me/mmintel/at-mintel.git "$TAG_TO_WAIT" 2>/dev/null | grep "$TAG_TO_WAIT" | awk '{print $1}' | tail -n1 || echo "")
              
              if [[ -z "$UPSTREAM_SHA" ]]; then
                echo "⚠️ Warning: Tag $TAG_TO_WAIT not found in mmintel/at-mintel."
              else
                echo "✅ Tag verified: Found upstream SHA $UPSTREAM_SHA for $TAG_TO_WAIT"
              fi

              # 2. Status Check (Requires GITEA_PAT for cross-repo API access)
              POLL_TOKEN="${{ secrets.GITEA_PAT || secrets.MINTEL_PRIVATE_TOKEN }}"
              
              if [[ -n "$POLL_TOKEN" ]]; then
                echo "⏳ GITEA_PAT found. Checking upstream build status..."
                curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
                  "https://git.infra.mintel.me/mmintel/at-mintel/raw/branch/main/packages/infra/scripts/wait-for-upstream.sh" > wait-for-upstream.sh
                chmod +x wait-for-upstream.sh
                GITEA_TOKEN="$POLL_TOKEN" ./wait-for-upstream.sh "mmintel/at-mintel" "$TAG_TO_WAIT"
              else
                echo "ℹ️ No GITEA_PAT secret found. Skipping build status wait (Actions API is restricted)."
                echo "   If this build fails, ensure that mmintel/at-mintel $TAG_TO_WAIT has finished its Docker build."
              fi
            fi
          fi

  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 2: QA (Lint, Typecheck, Test)
  # ──────────────────────────────────────────────────────────────────────────────
  qa:
    name: 🧪 QA
    needs: prepare
    if: needs.prepare.outputs.target != 'skip'
    runs-on: docker
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Setup pnpm
        uses: pnpm/action-setup@v3
        with:
          version: 10
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20

      - name: 🔐 Registry Auth
        run: |
          echo "@mintel:registry=https://git.infra.mintel.me/api/packages/mmintel/npm" > .npmrc
          echo "//git.infra.mintel.me/api/packages/mmintel/npm/:_authToken=${{ secrets.NPM_TOKEN }}" >> .npmrc
      - name: Install dependencies
        run: |
          pnpm store prune
          pnpm install --no-frozen-lockfile

      - name: 🔒 Security Audit
        run: pnpm audit --audit-level high || echo "⚠️ Audit found vulnerabilities (non-blocking)"
      - name: 🧪 QA Checks
        if: github.event.inputs.skip_checks != 'true'
        env:
          TURBO_TELEMETRY_DISABLED: "1"
        run: npx turbo run lint typecheck test --cache-dir=".turbo"

  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 3: Build & Push
  # ──────────────────────────────────────────────────────────────────────────────
  build:
    name: 🏗️ Build
    needs: [prepare, qa]
    if: needs.prepare.outputs.target != 'skip'
    runs-on: docker
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: 🐳 Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: 🔐 Registry Login
        run: echo "${{ secrets.REGISTRY_PASS }}" | docker login registry.infra.mintel.me -u "${{ secrets.REGISTRY_USER }}" --password-stdin
      - name: 🏗️ Build and Push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          provenance: false
          platforms: linux/amd64
          build-args: |
            NEXT_PUBLIC_BASE_URL=${{ needs.prepare.outputs.next_public_url }}
            NEXT_PUBLIC_TARGET=${{ needs.prepare.outputs.target }}
            UMAMI_WEBSITE_ID=${{ secrets.UMAMI_WEBSITE_ID || vars.UMAMI_WEBSITE_ID }}
            UMAMI_API_ENDPOINT=${{ secrets.UMAMI_API_ENDPOINT || vars.UMAMI_API_ENDPOINT || 'https://analytics.infra.mintel.me' }}
            NPM_TOKEN=${{ secrets.NPM_TOKEN }}
          tags: registry.infra.mintel.me/mintel/klz-2026:${{ needs.prepare.outputs.image_tag }}
          secrets: |
            "NPM_TOKEN=${{ secrets.NPM_TOKEN }}"

  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 4: Deploy
  # ──────────────────────────────────────────────────────────────────────────────
  deploy:
    name: 🚀 Deploy
    needs: [prepare, build, qa]
    runs-on: docker
    container:
      image: catthehacker/ubuntu:act-latest
    env:
      TARGET:               ${{ needs.prepare.outputs.target }}
      IMAGE_TAG:            ${{ needs.prepare.outputs.image_tag }}
      PROJECT_NAME:         ${{ needs.prepare.outputs.project_name }}
      NEXT_PUBLIC_BASE_URL: ${{ needs.prepare.outputs.next_public_url }}
      TRAEFIK_HOST:         ${{ needs.prepare.outputs.traefik_host }}
      GATEKEEPER_HOST:      ${{ needs.prepare.outputs.gatekeeper_host }}
      
      
      # Secrets mapping (Mail)
      MAIL_HOST:        ${{ secrets.SMTP_HOST || vars.SMTP_HOST }}
      MAIL_PORT:        ${{ secrets.SMTP_PORT || vars.SMTP_PORT || '587' }}
      MAIL_USERNAME:    ${{ secrets.SMTP_USER || vars.SMTP_USER }}
      MAIL_PASSWORD:    ${{ secrets.SMTP_PASS || vars.SMTP_PASS }}
      MAIL_FROM:        ${{ secrets.SMTP_FROM || vars.SMTP_FROM || 'noreply@klz-cables.com' }}
      MAIL_RECIPIENTS:  ${{ secrets.CONTACT_RECIPIENT || vars.CONTACT_RECIPIENT || 'info@klz-cables.com' }}
      
      # Monitoring
      SENTRY_DSN:       ${{ secrets.SENTRY_DSN || vars.SENTRY_DSN }}
      
      # Gatekeeper
      GATEKEEPER_PASSWORD: ${{ secrets.GATEKEEPER_PASSWORD || 'klz2026' }}

      # Analytics
      UMAMI_WEBSITE_ID:    ${{ secrets.UMAMI_WEBSITE_ID || vars.UMAMI_WEBSITE_ID }}
      UMAMI_API_ENDPOINT:  ${{ secrets.UMAMI_API_ENDPOINT || vars.UMAMI_API_ENDPOINT || 'https://analytics.infra.mintel.me' }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: 📝 Generate Environment
        shell: bash
        env:
          TRAEFIK_RULE:     ${{ needs.prepare.outputs.traefik_rule }}
          ENV_FILE:         ${{ needs.prepare.outputs.env_file }}
        run: |
          # Middleware Selection Logic
          # Regular app routes get auth on non-production
          # Unprotected routes (/stats, /errors) never get auth
          LOG_LEVEL=$( [[ "$TARGET" == "testing" || "$TARGET" == "development" ]] && echo "debug" || echo "info" )
          COOKIE_DOMAIN=.$(echo $NEXT_PUBLIC_BASE_URL | sed 's|https://||')
          STD_MW="${PROJECT_NAME}-ratelimit,${PROJECT_NAME}-forward,${PROJECT_NAME}-compress"
          
          if [[ "$TARGET" == "production" ]]; then
            AUTH_MIDDLEWARE="$STD_MW"
            COMPOSE_PROFILES=""
          else
            # Order: Ratelimit -> Forward (Proto) -> Auth -> Compression
            AUTH_MIDDLEWARE="${PROJECT_NAME}-ratelimit,${PROJECT_NAME}-forward,${PROJECT_NAME}-auth,${PROJECT_NAME}-compress"
            COMPOSE_PROFILES="gatekeeper"
          fi
          AUTH_MIDDLEWARE_UNPROTECTED="$STD_MW"

          # Gatekeeper Origin
          GATEKEEPER_ORIGIN="${NEXT_PUBLIC_BASE_URL}/gatekeeper"

          {
            echo "# Generated by CI - $TARGET"
            echo "IMAGE_TAG=$IMAGE_TAG"
            echo "NEXT_PUBLIC_BASE_URL=$NEXT_PUBLIC_BASE_URL"
            echo "GATEKEEPER_ORIGIN=$GATEKEEPER_ORIGIN"
            echo "SENTRY_DSN=$SENTRY_DSN"
            echo "LOG_LEVEL=$LOG_LEVEL"
            echo "MAIL_HOST=$MAIL_HOST"
            echo "MAIL_PORT=$MAIL_PORT"
            echo "MAIL_USERNAME=$MAIL_USERNAME"
            echo "MAIL_PASSWORD=$MAIL_PASSWORD"
            echo "MAIL_FROM=$MAIL_FROM"
            echo "MAIL_RECIPIENTS=$MAIL_RECIPIENTS"
            echo ""
            echo ""
            echo "# Gatekeeper"
            echo "GATEKEEPER_PASSWORD=$GATEKEEPER_PASSWORD"
            echo "AUTH_COOKIE_NAME=klz_gatekeeper_session"
            echo "COOKIE_DOMAIN=$COOKIE_DOMAIN"
            echo ""
            echo "# Analytics"
            echo "UMAMI_WEBSITE_ID=$UMAMI_WEBSITE_ID"
            echo "UMAMI_API_ENDPOINT=$UMAMI_API_ENDPOINT"
            echo ""
            echo "TARGET=$TARGET"
            echo "SENTRY_ENVIRONMENT=$TARGET"
            echo "PROJECT_NAME=$PROJECT_NAME"
            printf 'TRAEFIK_HOST_RULE=%s\n' "$TRAEFIK_RULE"
            echo "TRAEFIK_HOST=$TRAEFIK_HOST"
            echo "GATEKEEPER_HOST=$GATEKEEPER_HOST"
            echo "TRAEFIK_ENTRYPOINT=websecure"
            echo "TRAEFIK_TLS=true"
            echo "TRAEFIK_CERT_RESOLVER=le"
            echo "ENV_FILE=$ENV_FILE"
            echo "COMPOSE_PROFILES=$COMPOSE_PROFILES"
            echo "AUTH_MIDDLEWARE=$AUTH_MIDDLEWARE"
            echo "AUTH_MIDDLEWARE_UNPROTECTED=$AUTH_MIDDLEWARE_UNPROTECTED"
          } > .env.deploy

          echo "--- Generated .env.deploy ---"
          cat .env.deploy
          echo "----------------------------"

      - name: 🚀 SSH Deploy
        shell: bash
        env:
          ENV_FILE:         ${{ needs.prepare.outputs.env_file }}
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.ALPHA_SSH_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          ssh-keyscan -H alpha.mintel.me >> ~/.ssh/known_hosts 2>/dev/null

          # Transfer and Restart
          if [[ "$TARGET" == "production" ]]; then
            SITE_DIR="/home/deploy/sites/klz-cables.com"
          elif [[ "$TARGET" == "testing" ]]; then
            SITE_DIR="/home/deploy/sites/testing.klz-cables.com"
          elif [[ "$TARGET" == "staging" ]]; then
            SITE_DIR="/home/deploy/sites/staging.klz-cables.com"
          else
            SITE_DIR="/home/deploy/sites/branch.klz-cables.com/${SLUG:-unknown}"
          fi
          ssh root@alpha.mintel.me "mkdir -p $SITE_DIR"
          
          scp .env.deploy root@alpha.mintel.me:$SITE_DIR/$ENV_FILE
          scp docker-compose.yml root@alpha.mintel.me:$SITE_DIR/docker-compose.yml
          
          ssh root@alpha.mintel.me "cd $SITE_DIR && echo '${{ secrets.REGISTRY_PASS }}' | docker login registry.infra.mintel.me -u '${{ secrets.REGISTRY_USER }}' --password-stdin"
          ssh root@alpha.mintel.me "cd $SITE_DIR && docker compose -p '${{ needs.prepare.outputs.project_name }}' --env-file '$ENV_FILE' pull"
          ssh root@alpha.mintel.me "cd $SITE_DIR && docker compose -p '${{ needs.prepare.outputs.project_name }}' --env-file '$ENV_FILE' up -d --remove-orphans"
          
          ssh root@alpha.mintel.me "docker network prune -f"
          ssh root@alpha.mintel.me "docker system prune -f --filter 'until=24h'"

      - name: 🧹 Post-Deploy Cleanup (Runner)
        if: always()
        run: docker builder prune -f --filter "until=1h"

  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 5: Post-Deploy Verification (Smoke Tests + Quality Gates)
  # ──────────────────────────────────────────────────────────────────────────────
  post_deploy_checks:
    name: 🧪 Post-Deploy Verification
    needs: [prepare, deploy]
    if: needs.deploy.result == 'success' && needs.prepare.outputs.target != 'branch'
    runs-on: docker
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Setup pnpm
        uses: pnpm/action-setup@v3
        with:
          version: 10
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20
      - name: 🔐 Registry Auth
        run: |
          echo "@mintel:registry=https://git.infra.mintel.me/api/packages/mmintel/npm" > .npmrc
          echo "//git.infra.mintel.me/api/packages/mmintel/npm/:_authToken=${{ secrets.NPM_TOKEN }}" >> .npmrc
      - name: Install dependencies
        id: deps
        run: |
          pnpm store prune
          pnpm install --no-frozen-lockfile
      - name: Setup Chrome
        id: setup-chrome
        uses: browser-actions/setup-chrome@v1
        with:
          install-dependencies: true

      # ── Minimalist Smoke Test ──────────────────────────────────────────
      - name: 🌐 Smoke Test (Essential Flow)
        if: always() && steps.deps.outcome == 'success'
        env:
          NEXT_PUBLIC_BASE_URL: ${{ needs.prepare.outputs.next_public_url }}
          GATEKEEPER_PASSWORD: ${{ secrets.GATEKEEPER_PASSWORD || 'klz2026' }}
          PUPPETEER_EXECUTABLE_PATH: ${{ steps.setup-chrome.outputs.chrome-path }}
        run: npx tsx scripts/smoke.ts

  # ──────────────────────────────────────────────────────────────────────────────
  # JOB 7: Notifications
  # ──────────────────────────────────────────────────────────────────────────────
  notifications:
    name: 🔔 Notify
    needs: [prepare, deploy, post_deploy_checks]
    if: always()
    runs-on: docker
    container:
      image: catthehacker/ubuntu:act-latest
    steps:
      - name: 🔔 Gotify
        shell: bash
        run: |
          DEPLOY="${{ needs.deploy.result }}"
          SMOKE="${{ needs.post_deploy_checks.result }}"
          PERF="${{ needs.post_deploy_checks.result }}"
          TARGET="${{ needs.prepare.outputs.target }}"
          VERSION="${{ needs.prepare.outputs.image_tag }}"
          URL="${{ needs.prepare.outputs.next_public_url }}"

          # Gotify priority scale:
          #   1-3  = low (silent/info)
          #   4-5  = normal
          #   6-7  = high (warning)
          #   8-10 = critical (alarm)
          if [[ "$DEPLOY" != "success" ]]; then
            PRIORITY=10
            EMOJI="🚨"
            STATUS_LINE="DEPLOY FAILED"
          elif [[ "$SMOKE" != "success" ]]; then
            PRIORITY=8
            EMOJI="⚠️"
            STATUS_LINE="Smoke tests failed"
          elif [[ "$PERF" != "success" ]]; then
            PRIORITY=5
            EMOJI="📉"
            STATUS_LINE="Performance degraded"
          else
            PRIORITY=2
            EMOJI="✅"
            STATUS_LINE="All checks passed"
          fi

          TITLE="$EMOJI klz-cables.com $VERSION → $TARGET"
          MESSAGE="$STATUS_LINE
          Deploy: $DEPLOY | Smoke: $SMOKE | Perf: $PERF
          $URL"

          if [[ -z "${{ secrets.GOTIFY_URL }}" || -z "${{ secrets.GOTIFY_TOKEN }}" ]]; then
            echo "⚠️ Gotify credentials missing, skipping notification."
            exit 0
          fi

          curl -s -k -X POST "${{ secrets.GOTIFY_URL }}/message?token=${{ secrets.GOTIFY_TOKEN }}" \
            -F "title=$TITLE" \
            -F "message=$MESSAGE" \
            -F "priority=$PRIORITY" || true