package main

import (
	"encoding/json"
	"net/http"
	"time"
)

// Web administration interface
type WebInterface struct {
	Enable bool   `json:"enable"`
	Port   int    `json:"port"`
	Host   string `json:"host"`
	SSL    struct {
		Enable   bool   `json:"enable"`
		CertFile string `json:"cert_file"`
		KeyFile  string `json:"key_file"`
	} `json:"ssl"`
	Authentication struct {
		Method   string `json:"method"` // basic, oauth, jwt
		Username string `json:"username"`
		Password string `json:"password"`
	} `json:"authentication"`
}

// WebServerStats represents statistics for the web interface
type WebServerStats struct {
	Uptime         time.Duration `json:"uptime"`
	ActiveUsers    int           `json:"active_users"`
	ActiveChannels int           `json:"active_channels"`
	LinkedServers  int           `json:"linked_servers"`
	MessagesPerSec float64       `json:"messages_per_sec"`
	MemoryUsage    uint64        `json:"memory_usage"`
	CPUUsage       float64       `json:"cpu_usage"`
}

// WebUserInfo represents user information for the web interface
type WebUserInfo struct {
	Nick     string    `json:"nick"`
	User     string    `json:"user"`
	Host     string    `json:"host"`
	Channels int       `json:"channels"`
	IsOper   bool      `json:"is_oper"`
	ConnTime time.Time `json:"conn_time"`
}

// REST API endpoints
func (w *WebInterface) RegisterRoutes() {
	http.HandleFunc("/api/v1/server/stats", w.handleServerStats)
	http.HandleFunc("/api/v1/users", w.handleUsers)
	http.HandleFunc("/api/v1/channels", w.handleChannels)
	http.HandleFunc("/api/v1/operators", w.handleOperators)
	http.HandleFunc("/api/v1/config", w.handleConfig)
	http.HandleFunc("/api/v1/logs", w.handleLogs)
	http.HandleFunc("/api/v1/bans", w.handleBans)
	http.HandleFunc("/api/v1/network", w.handleNetwork)

	// WebSocket for real-time updates
	http.HandleFunc("/ws/live", w.handleWebSocket)

	// Static files for web interface
	http.Handle("/", http.FileServer(http.Dir("web/static/")))
}

func (w *WebInterface) handleServerStats(rw http.ResponseWriter, r *http.Request) {
	// TODO: Get actual server statistics
	stats := WebServerStats{
		Uptime:         time.Duration(0),
		ActiveUsers:    0,
		ActiveChannels: 0,
		LinkedServers:  0,
		MessagesPerSec: 0.0,
		MemoryUsage:    0,
		CPUUsage:       0.0,
	}

	rw.Header().Set("Content-Type", "application/json")
	json.NewEncoder(rw).Encode(stats)
}

func (w *WebInterface) handleUsers(rw http.ResponseWriter, r *http.Request) {
	switch r.Method {
	case "GET":
		// List all users
		users := make([]*WebUserInfo, 0)
		// TODO: Get actual users from server
		json.NewEncoder(rw).Encode(users)

	case "POST":
		// Send message to user or perform action
		http.Error(rw, "Not implemented", http.StatusNotImplemented)

	case "DELETE":
		// Disconnect user
		http.Error(rw, "Not implemented", http.StatusNotImplemented)
	}
}

func (w *WebInterface) handleChannels(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

func (w *WebInterface) handleOperators(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

func (w *WebInterface) handleConfig(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

func (w *WebInterface) handleLogs(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

func (w *WebInterface) handleBans(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

func (w *WebInterface) handleNetwork(rw http.ResponseWriter, r *http.Request) {
	http.Error(rw, "Not implemented", http.StatusNotImplemented)
}

// Real-time dashboard with WebSocket
func (w *WebInterface) handleWebSocket(rw http.ResponseWriter, r *http.Request) {
	// TODO: Upgrade to WebSocket and send real-time updates
	http.Error(rw, "WebSocket not implemented", http.StatusNotImplemented)
}