package api

import (
	"encoding/json"
	"net/http"
	"proxmox-router/internal/aerotun"
)

func (s *Server) handleListAeroTUNTunnels(w http.ResponseWriter, r *http.Request) {
	tunnels := s.vpnMgr.AeroTUN.List()
	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(tunnels)
}

func (s *Server) handleGetAeroTUNStats(w http.ResponseWriter, r *http.Request) {
	stats := s.vpnMgr.AeroTUN.GetSummaryStats()
	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(stats)
}

func (s *Server) handleGenerateAeroTUNKey(w http.ResponseWriter, r *http.Request) {
	key, err := aerotun.GenerateSecureKey()
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]string{"key": key})
}

func (s *Server) handleSaveAeroTUNTunnel(w http.ResponseWriter, r *http.Request) {
	var inst aerotun.TunnelInstance
	if err := json.NewDecoder(r.Body).Decode(&inst); err != nil {
		http.Error(w, "invalid request body", http.StatusBadRequest)
		return
	}

	saved, err := s.vpnMgr.AeroTUN.Save(inst)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(saved)
}

func (s *Server) handleDeleteAeroTUNTunnel(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	if id == "" {
		http.Error(w, "missing tunnel ID", http.StatusBadRequest)
		return
	}

	if err := s.vpnMgr.AeroTUN.Delete(id); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]bool{"success": true})
}

func (s *Server) handleSetAeroTUNTunnelState(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	if id == "" {
		http.Error(w, "missing tunnel ID", http.StatusBadRequest)
		return
	}

	var req struct {
		Disabled bool `json:"disabled"`
	}
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "invalid JSON", http.StatusBadRequest)
		return
	}

	if err := s.vpnMgr.AeroTUN.ToggleState(id, req.Disabled); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]bool{"success": true})
}

func (s *Server) handleStartAeroTUNTunnel(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	if id == "" {
		http.Error(w, "missing tunnel ID", http.StatusBadRequest)
		return
	}

	if err := s.vpnMgr.AeroTUN.StartTunnel(id); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]bool{"success": true})
}

func (s *Server) handleStopAeroTUNTunnel(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	if id == "" {
		http.Error(w, "missing tunnel ID", http.StatusBadRequest)
		return
	}

	if err := s.vpnMgr.AeroTUN.StopTunnel(id); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]bool{"success": true})
}