package api

import (
	"encoding/json"
	"log"
	"net/http"
	"strconv"

	"git.rouggy.com/rouggy/ShackMaster/internal/config"
	"github.com/gorilla/websocket"
)

type Server struct {
	deviceManager *DeviceManager
	hub           *Hub
	config        *config.Config
	upgrader      websocket.Upgrader
}

func NewServer(dm *DeviceManager, hub *Hub, cfg *config.Config) *Server {
	return &Server{
		deviceManager: dm,
		hub:           hub,
		config:        cfg,
		upgrader: websocket.Upgrader{
			ReadBufferSize:  1024,
			WriteBufferSize: 1024,
			CheckOrigin: func(r *http.Request) bool {
				return true // Allow all origins for now
			},
		},
	}
}

func (s *Server) SetupRoutes() *http.ServeMux {
	mux := http.NewServeMux()

	// WebSocket endpoint
	mux.HandleFunc("/ws", s.handleWebSocket)

	// REST API endpoints
	mux.HandleFunc("/api/status", s.handleGetStatus)
	mux.HandleFunc("/api/config", s.handleGetConfig)

	// WebSwitch endpoints
	mux.HandleFunc("/api/webswitch/relay/on", s.handleWebSwitchRelayOn)
	mux.HandleFunc("/api/webswitch/relay/off", s.handleWebSwitchRelayOff)
	mux.HandleFunc("/api/webswitch/all/on", s.handleWebSwitchAllOn)
	mux.HandleFunc("/api/webswitch/all/off", s.handleWebSwitchAllOff)

	// Rotator endpoints
	mux.HandleFunc("/api/rotator/move", s.handleRotatorMove)
	mux.HandleFunc("/api/rotator/cw", s.handleRotatorCW)
	mux.HandleFunc("/api/rotator/ccw", s.handleRotatorCCW)
	mux.HandleFunc("/api/rotator/stop", s.handleRotatorStop)

	// Tuner endpoints
	mux.HandleFunc("/api/tuner/operate", s.handleTunerOperate)
	mux.HandleFunc("/api/tuner/tune", s.handleTunerAutoTune)
	mux.HandleFunc("/api/tuner/antenna", s.handleTunerAntenna)

	// Antenna Genius endpoints
	mux.HandleFunc("/api/antenna/set", s.handleAntennaSet)

	// Power Genius endpoints
	mux.HandleFunc("/api/power/fanmode", s.handlePowerFanMode)

	// Static files (will be frontend)
	mux.Handle("/", http.FileServer(http.Dir("./web/dist")))

	return mux
}

func (s *Server) handleWebSocket(w http.ResponseWriter, r *http.Request) {
	conn, err := s.upgrader.Upgrade(w, r, nil)
	if err != nil {
		log.Printf("WebSocket upgrade error: %v", err)
		return
	}

	ServeWs(s.hub, conn)
}

func (s *Server) handleGetStatus(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	status := s.deviceManager.GetStatus()
	s.sendJSON(w, status)
}

func (s *Server) handleGetConfig(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	// Only send public config info (not API keys)
	configInfo := map[string]interface{}{
		"callsign": s.config.Location.Callsign,
		"location": map[string]float64{
			"latitude":  s.config.Location.Latitude,
			"longitude": s.config.Location.Longitude,
		},
	}

	s.sendJSON(w, configInfo)
}

// WebSwitch handlers
func (s *Server) handleWebSwitchRelayOn(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	relay, err := strconv.Atoi(r.URL.Query().Get("relay"))
	if err != nil || relay < 1 || relay > 5 {
		http.Error(w, "Invalid relay number", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.WebSwitch().TurnOn(relay); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleWebSwitchRelayOff(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	relay, err := strconv.Atoi(r.URL.Query().Get("relay"))
	if err != nil || relay < 1 || relay > 5 {
		http.Error(w, "Invalid relay number", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.WebSwitch().TurnOff(relay); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleWebSwitchAllOn(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	if err := s.deviceManager.WebSwitch().AllOn(); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleWebSwitchAllOff(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	if err := s.deviceManager.WebSwitch().AllOff(); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

// Rotator handlers
func (s *Server) handleRotatorMove(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	var req struct {
		Rotator int `json:"rotator"`
		Azimuth int `json:"azimuth"`
	}

	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.RotatorGenius().MoveToAzimuth(req.Rotator, req.Azimuth); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleRotatorCW(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	rotator, err := strconv.Atoi(r.URL.Query().Get("rotator"))
	if err != nil || rotator < 1 || rotator > 2 {
		http.Error(w, "Invalid rotator number", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.RotatorGenius().RotateCW(rotator); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleRotatorCCW(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	rotator, err := strconv.Atoi(r.URL.Query().Get("rotator"))
	if err != nil || rotator < 1 || rotator > 2 {
		http.Error(w, "Invalid rotator number", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.RotatorGenius().RotateCCW(rotator); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleRotatorStop(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	if err := s.deviceManager.RotatorGenius().Stop(); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

// Tuner handlers
func (s *Server) handleTunerOperate(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	var req struct {
		Operate bool `json:"operate"`
	}

	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.TunerGenius().SetOperate(req.Operate); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleTunerAutoTune(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	if err := s.deviceManager.TunerGenius().AutoTune(); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) handleTunerAntenna(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	var req struct {
		Antenna int `json:"antenna"`
	}

	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.TunerGenius().ActivateAntenna(req.Antenna); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

// Antenna Genius handlers
func (s *Server) handleAntennaSet(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	var req struct {
		Radio   int `json:"radio"`
		Antenna int `json:"antenna"`
	}

	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.AntennaGenius().SetRadioAntenna(req.Radio, req.Antenna); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

// Power Genius handlers
func (s *Server) handlePowerFanMode(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	var req struct {
		Mode string `json:"mode"`
	}

	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := s.deviceManager.PowerGenius().SetFanMode(req.Mode); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	s.sendJSON(w, map[string]string{"status": "ok"})
}

func (s *Server) sendJSON(w http.ResponseWriter, data interface{}) {
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(data)
}