// RPC primitives for safcm: logging constants

// Copyright (C) 2021  Simon Ruderich
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package safcm

import (
	"fmt"
)

// LogLevel controls the number of displayed log messages. Higher levels
// include all messages from lower levels (e.g. LogVerbose includes all
// messages from LogInfo).
type LogLevel int

const (
	_ LogLevel = iota
	// Log only errors
	LogError
	// Log changes
	LogInfo
	// Log host information and changes on remote host
	LogVerbose
	// Log additional information and commands leading up to the changes
	LogDebug
	// Log output of all commands
	LogDebug2
	// Log all RPC messages
	LogDebug3
)

func ParseLogLevel(s string) (LogLevel, error) {
	var x LogLevel
	switch s {
	case "error":
		x = LogError
	case "info":
		x = LogInfo
	case "verbose":
		x = LogVerbose
	case "debug":
		x = LogDebug
	case "debug2":
		x = LogDebug2
	case "debug3":
		x = LogDebug3
	default:
		return 0, fmt.Errorf("invalid LogLevel %q", s)
	}
	return x, nil
}