package file

import (
	"github.com/asaskevich/govalidator"
	"github.com/juju/errors"
)

// ConfigStruct is the configuration for File Provider.
type ConfigStruct struct {
	Filename   string `yaml:"filename"`
	MaxLines   int    `yaml:"max_lines"`
	MaxSize    int    `yaml:"max_size"`
	Daily      bool   `yaml:"daily"`
	MaxDays    int    `yaml:"max_days"`
	Rotate     bool   `yaml:"rotate"`
	Perm       string `yaml:"perm"`
	RotatePerm string `yaml:"rotate_perm"`
}

// IsValid will check that the File configuration is valid.
func (c *ConfigStruct) IsValid() error {

	if c.Filename == "" {
		return errors.NotValidf("Path is empty in File configuration")
	} else if isValid, _ := govalidator.IsFilePath(c.Filename); !isValid {
		return errors.NotValidf("Path is invalid in File configuration")
	}

	return nil
}

// ApplyDefault will check config and apply default on mandatory values.
func (c *ConfigStruct) ApplyDefault() {

	if c.Perm == "" {
		c.Perm = "0660"
	}

	if c.RotatePerm == "" {
		c.RotatePerm = "0440"
	}
}