# gluetun + qBittorrent — all torrent traffic routed through ProtonVPN WireGuard
# gluetun runs as the VPN container; qBittorrent shares its network namespace (same pod)
apiVersion: apps/v1
kind: Deployment
metadata:
  name: qbittorrent
  namespace: media
  labels:
    app: qbittorrent
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: qbittorrent
  template:
    metadata:
      labels:
        app: qbittorrent
    spec:
      initContainers:
        # Ensure /dev/net/tun exists on the node
        - name: tun-setup
          image: busybox:latest
          command: ["sh", "-c", "mkdir -p /dev/net && [ -c /dev/net/tun ] || mknod /dev/net/tun c 10 200 && chmod 666 /dev/net/tun && sysctl -w net.ipv6.conf.all.disable_ipv6=1 || true && ip route flush table 51820 2>/dev/null || true && ip rule del priority 101 2>/dev/null || true && ip rule del table 51820 2>/dev/null || true"]
          securityContext:
            privileged: true
      containers:
        # VPN container — must come first so network is up before qBittorrent starts
        - name: gluetun
          image: ghcr.io/qdm12/gluetun:latest
          securityContext:
            capabilities:
              add: ["NET_ADMIN"]
          env:
            # Use custom provider pinned to US-IL#267 — NAT-PMP port forwarding enabled
            - name: VPN_SERVICE_PROVIDER
              value: "custom"
            - name: VPN_TYPE
              value: "wireguard"
            - name: WIREGUARD_PRIVATE_KEY
              valueFrom:
                secretKeyRef:
                  name: media-secrets
                  key: PROTONVPN_PRIVATE_KEY
            # US-IL#267 server — generated from ProtonVPN portal with NAT-PMP=on
            - name: WIREGUARD_PUBLIC_KEY
              value: "qT0lxDVbWEIyrL2A40FfCXRlUALvnryRz2aQdD6gUDs="
            - name: WIREGUARD_ADDRESSES
              value: "10.2.0.2/32"
            - name: WIREGUARD_ENDPOINT_IP
              value: "89.187.180.40"
            - name: WIREGUARD_ENDPOINT_PORT
              value: "51820"
            # Allow cluster-internal traffic to bypass VPN (for Radarr/Sonarr → qBittorrent API)
            - name: FIREWALL_OUTBOUND_SUBNETS
              value: "10.42.0.0/16,10.43.0.0/16"
            - name: FIREWALL_INPUT_PORTS
              value: "5351"
          ports:
            - containerPort: 8888  # gluetun HTTP proxy (unused but required)
          resources:
            requests:
              memory: 128Mi
              cpu: 50m
            limits:
              memory: 512Mi
              cpu: 200m

        # NAT-PMP helper — requests a forwarded port from ProtonVPN gateway every 45s
        # and updates qBittorrent's listen port so peers can connect inbound
        - name: natpmpc-helper
          image: alpine:latest
          command:
            - sh
            - -c
            - |
              echo "Waiting for VPN to establish before installing packages..."
              sleep 30
              until apk add -q libnatpmp curl 2>/dev/null; do
                echo "apk failed (VPN not ready?), retrying in 10s..."
                sleep 10
              done
              echo "Packages installed, starting NAT-PMP loop"
              while true; do
                # Request port forwarding from ProtonVPN NAT-PMP gateway
                OUT=$(natpmpc -a 0 0 udp 60 -g 10.2.0.1 2>&1)
                PORT=$(echo "$OUT" | grep -oE 'Mapped public port [0-9]+' | grep -oE '[0-9]+$')
                if [ -n "$PORT" ]; then
                  echo "$(date): Got forwarded port $PORT"
                  # Also request TCP mapping for the same port
                  natpmpc -a "$PORT" "$PORT" tcp 60 -g 10.2.0.1 >/dev/null 2>&1
                  # Update qBittorrent listen port (form-encoded: json=<json_string>)
                  SID=$(curl -s -c /tmp/qbt.txt -X POST http://localhost:8080/api/v2/auth/login \
                    -d "username=admin&password=adminadmin" 2>/dev/null)
                  curl -s -b /tmp/qbt.txt -X POST http://localhost:8080/api/v2/app/setPreferences \
                    -d "json={\"listen_port\":$PORT,\"random_port\":false}" >/dev/null 2>&1
                  echo "$(date): qBittorrent listen port set to $PORT"
                else
                  echo "$(date): NAT-PMP failed: $OUT"
                fi
                sleep 45
              done
          resources:
            requests:
              memory: 32Mi
              cpu: 10m
            limits:
              memory: 64Mi
              cpu: 50m

        # qBittorrent — shares gluetun's network namespace, all traffic through VPN
        - name: qbittorrent
          image: lscr.io/linuxserver/qbittorrent:latest
          env:
            - name: PUID
              value: "1000"
            - name: PGID
              value: "1000"
            - name: TZ
              value: "America/Chicago"
            - name: WEBUI_PORT
              value: "8080"
          ports:
            - containerPort: 8080
          volumeMounts:
            - name: config
              mountPath: /config
            - name: media
              mountPath: /media
          resources:
            requests:
              memory: 256Mi
              cpu: 100m
            limits:
              memory: 1Gi
              cpu: 500m
      volumes:
        - name: config
          persistentVolumeClaim:
            claimName: qbittorrent-config
        - name: media
          persistentVolumeClaim:
            claimName: media-data
---
apiVersion: v1
kind: Service
metadata:
  name: qbittorrent
  namespace: media
spec:
  selector:
    app: qbittorrent
  ports:
    - name: webui
      port: 8080
      targetPort: 8080
  type: ClusterIP