/* openbills - Server for web based Libre Billing Software
 * Copyright (C) 2023  Vidhu Kant Sharma <vidhukant@vidhukant.com>
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

package conf

import (
	"github.com/spf13/viper"
	"log"
)

// TODO: validate config
func init() {
	viper.SetConfigName("openbills")
	viper.AddConfigPath("/etc/openbills")
	viper.AddConfigPath(".")

	if err := viper.ReadInConfig(); err != nil {
		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
			log.Printf("\x1b[43m\x1b[30m[warn]\x1b[0m config file not found, skipping...\n")
		} else {
			log.Fatalf("\x1b[41m\x1b[30m[err]\x1b[0m cannot read config file. %v\n", err.Error())
		}
	}

	viper.SetDefault("port", "8765")
	viper.SetDefault("production_mode", false)

	viper.SetDefault("security.min_password_length", 12)
	viper.SetDefault("security.max_password_length", 72)

	viper.SetDefault("instance.title", "OpenBills")
	viper.SetDefault("instance.description", "Libre Billing Software")
	viper.SetDefault("instance.url", "https://openbills.vidhukant.com")

	// TODO: exit if these 3 have unallowed fields
	viper.SetDefault("username.allowed_characters", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_")
	viper.SetDefault("username.min_username_length", 2)
	viper.SetDefault("username.max_username_length", 20)

	viper.SetDefault("cryptography.password_hashing_cost", 14)

	log.Printf("\x1b[46m\x1b[30m[info]\x1b[0m Loaded Config File \"%s\"\n", viper.ConfigFileUsed())
}