package sys

import (
	"net/http"
	"fmt"
	"super-frpc/global"
	"super-frpc/utils"
	"super-frpc/postLog"
)

func SelfCheckHandler(w http.ResponseWriter, r *http.Request) {
	userID, err := utils.Auth(w, r, http.MethodGet, "visitor", "superuser", "admin")
	if err != nil {
		utils.SendErrorResponse(w, http.StatusUnauthorized, "invalid token or timestamp")
		postLog.Warning(fmt.Sprintf("[SelfCheckHandler] Auth failed: %v, userID: %d", err, userID))
		return
	}
	err = SettingsSelfCheck()
	if err != nil {
		utils.SendErrorResponse(w, http.StatusInternalServerError, err.Error())
		return
	}
	err = FrpBinaryCheck()
	if err != nil {
		utils.SendErrorResponse(w, http.StatusInternalServerError, err.Error())
		return
	}
	utils.SendSuccessResponse(w, "Self check passed", nil)
	postLog.Info(fmt.Sprintf("[SelfCheckHandler] [%d] Self check passed", userID))
}

func SettingsSelfCheck() error {
	if global.CurrentConfig.ListenAddr == "" {
		return fmt.Errorf("listenAddr is not set")
	}
	if global.CurrentConfig.ListenPort == "0" {
		return fmt.Errorf("listenPort is invalid")
	}
	if global.CurrentConfig.FrpcPath == "" {
		return fmt.Errorf("frpcPath is not set")
	}
	if global.CurrentConfig.InstancePath == "" {
		return fmt.Errorf("instancePath is not set")
	}
	return nil
}

func FrpBinaryCheck() error {
	if !utils.IsFileExist(global.CurrentConfig.FrpcPath) {
		return fmt.Errorf("frpc binary is not exist")
	}
	return nil
}