package configuration

import (
	"fmt"
	"os"

	"github.com/goccy/go-yaml"
	"github.com/sirupsen/logrus"
)

type Config struct {
	Deconnect Deconnect `yaml:"deconnect"`
	Upstream  Upstream  `yaml:"upstream"`
}

type Deconnect struct {
	LogLevel logrus.Level `yaml:"log_level"`
	Host     string       `yaml:"host"`
	Port     string       `yaml:"port"`
}

type Upstream struct {
	URL         string `yaml:"url"`
	InsecureTLS bool   `yaml:"insecure_tls,omitempty"`
}

func New() (*Config, error) {
	deconnectCfgPath := "/etc/deconnect.yaml"
	if customPath, ok := os.LookupEnv("DECONNECT_CONFIG"); ok {
		deconnectCfgPath = customPath
	}

	rawConfig, err := os.ReadFile(deconnectCfgPath)
	if err != nil {
		return nil, fmt.Errorf("%w: %w (%w)", ErrConfiguration, ErrCantReadConfigFile, err)
	}

	config := new(Config)

	err = yaml.Unmarshal(rawConfig, config)
	if err != nil {
		return nil, fmt.Errorf("%w: %w (%w)", ErrConfiguration, ErrCantParseConfigFile, err)
	}

	return config, nil
}