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package main
import (
"encoding/json"
"fmt"
"html/template"
"log"
"net/http"
"strings"
"wg-portal/internal"
)
// APIResponse represents a standard API response structure
type APIResponse struct {
Success bool `json:"success"`
Data any `json:"data,omitempty"`
Error string `json:"error,omitempty"`
}
// Server encapsulates our HTTP server
type Server struct {
mux *http.ServeMux
templates *template.Template
config *internal.Config
}
// NewServer creates a new server instance
func NewServer(config *internal.Config) (*Server, error) {
// Parse templates
templates, err := template.ParseFiles("templates/index.html")
if err != nil {
return nil, fmt.Errorf("failed to parse templates: %w", err)
}
s := &Server{
mux: http.NewServeMux(),
templates: templates,
config: config,
}
s.setupRoutes()
return s, nil
}
// setupRoutes configures all HTTP routes
func (s *Server) setupRoutes() {
// Serve static files
s.mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./static"))))
// Main page
s.mux.HandleFunc("/", s.handleHome)
// API endpoints
s.mux.HandleFunc("/api/connections", s.handleConnectionsAPI)
s.mux.HandleFunc("/api/connections/toggle", s.handleToggleAPI)
s.mux.HandleFunc("/api/status", s.handleStatusAPI)
}
// handleHome serves the main HTML page
func (s *Server) handleHome(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/" {
http.NotFound(w, r)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
templateData := map[string]any{
"Title": s.config.Server.Title,
}
if err := s.templates.ExecuteTemplate(w, "index.html", templateData); err != nil {
log.Printf("Error rendering template: %v", err)
http.Error(w, "Internal Server Error", http.StatusInternalServerError)
}
}
// handleConnectionsAPI returns connection data as JSON
func (s *Server) handleConnectionsAPI(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
s.sendErrorResponse(w, "Method not allowed", http.StatusMethodNotAllowed)
return
}
connections, err := internal.GetConnections()
if err != nil {
log.Printf("Error getting connections: %v", err)
s.sendErrorResponse(w, fmt.Sprintf("%v", err), http.StatusInternalServerError)
return
}
s.sendSuccessResponse(w, connections)
}
// handleToggleAPI handles connection toggle requests
func (s *Server) handleToggleAPI(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
s.sendErrorResponse(w, "Method not allowed", http.StatusMethodNotAllowed)
return
}
var req struct {
Name string `json:"name"`
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
s.sendErrorResponse(w, "Invalid JSON", http.StatusBadRequest)
return
}
if strings.TrimSpace(req.Name) == "" {
s.sendErrorResponse(w, "Connection name is required", http.StatusBadRequest)
return
}
output, err := internal.ToggleConnection(req.Name)
if err != nil {
log.Printf("Error toggling connection %s: %v (output: %s)", req.Name, err, string(output))
s.sendErrorResponse(w, err.Error(), http.StatusInternalServerError)
return
}
response := map[string]any{
"message": fmt.Sprintf("Connection %s toggled successfully", req.Name),
"output": string(output),
}
s.sendSuccessResponse(w, response)
}
// handleStatusAPI returns WireGuard status information
func (s *Server) handleStatusAPI(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
s.sendErrorResponse(w, "Method not allowed", http.StatusMethodNotAllowed)
return
}
status, err := internal.GetStatus()
if err != nil {
log.Printf("Error getting status: %v", err)
s.sendErrorResponse(w, fmt.Sprintf("%v", err), http.StatusInternalServerError)
return
}
response := map[string]any{
"status": status,
}
s.sendSuccessResponse(w, response)
}
// sendSuccessResponse sends a JSON success response
func (*Server) sendSuccessResponse(w http.ResponseWriter, data any) {
w.Header().Set("Content-Type", "application/json")
_ = json.NewEncoder(w).Encode(APIResponse{
Success: true,
Data: data,
})
}
// sendErrorResponse sends a JSON error response
func (*Server) sendErrorResponse(w http.ResponseWriter, message string, statusCode int) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(statusCode)
_ = json.NewEncoder(w).Encode(APIResponse{
Success: false,
Error: message,
})
}
// Start starts the HTTP server
func (s *Server) Start() error {
addr := s.config.GetAddress()
log.Printf("%s starting on http://%s\n", s.config.Server.Title, addr)
return http.ListenAndServe(addr, s.mux)
}
func main() {
// Load configuration
config, err := internal.LoadConfig("config.yaml")
if err != nil {
log.Fatalf("Failed to load config: %v", err)
}
server, err := NewServer(config)
if err != nil {
log.Fatalf("Failed to create server: %v", err)
}
if err := server.Start(); err != nil {
log.Fatalf("Server failed to start: %v", err)
}
}
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