package owrt

import (
	"fmt"
)

// SysAction is the result of an UCI action output and return code
type SysAction struct {
	*CommandResult
	Command string
}

// System "Object", an inteface with openwrt system
type System struct {
	exec Executor
}

// NewSystem return an OpenWRT System instance to interact with UCI
func NewSystem() *System {
	exec := &localExecutor{}
	return &System{exec}
}

// NewSystemWithExecutor returns a System Instance an gives you the ability to provide
// a different command executor than the default one.
func NewSystemWithExecutor(exec Executor) *System {
	return &System{exec}
}

// sysRun, private method to run the UCI command
func (s *System) sysRun(cmd string, param ...string) *SysAction {
	res := s.exec.Run(cmd, param...)
	return &SysAction{res, fmt.Sprintf("%s %s", cmd, param)}
}

// Service implementation of "service" command
func (s *System) Service(name string, action string) *SysAction {
	cmd := fmt.Sprintf("/etc/init.d/%s", name)
	return s.sysRun(cmd, action)
}

// Opkg provides an interface to system command opkg
// useful for package installation or system update
func (s *System) Opkg(params ...string) *SysAction {
	return s.sysRun("opkg", params...)
}