package middleware

import (
	"net/http"

	"github.com/yourusername/markedit/internal/auth"
	"github.com/yourusername/markedit/internal/database"
)

// RequireAuth ensures the user is authenticated
func RequireAuth(db *database.DB) func(http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			session, err := auth.GetSession(r)
			if err != nil {
				http.Error(w, "Unauthorized", http.StatusUnauthorized)
				return
			}

			userID, ok := auth.GetUserID(session)
			if !ok || userID == 0 {
				http.Error(w, "Unauthorized", http.StatusUnauthorized)
				return
			}

			// Verify user exists in database
			_, err = db.GetUserByID(userID)
			if err != nil {
				http.Error(w, "Unauthorized", http.StatusUnauthorized)
				return
			}

			next.ServeHTTP(w, r)
		})
	}
}