package config

import (
	"os"
	"strings"

	"git.sr.ht/~cco/go-scopes/common"
)

type Cfg struct {
	*Base
	ConfigFormat string
}

func Start(ctx common.Context) {
}

// definitions

type Base struct {
	name     string
	starter  common.StartFct
	children []common.Config
}

func (cfg *Base) Name() string {
	return cfg.name
}

func (cfg *Base) Starter() common.StartFct {
	return cfg.starter
}

func (cfg *Base) Children() []common.Config {
	return cfg.children
}

func (cfg *Base) Add(child common.Config) {
	cfg.children = append(cfg.children, child)
}

func MakeBase(name string, starter common.StartFct) *Base {
	return &Base{
		name:    name,
		starter: starter,
	}
}

// overridable settings

type Settings map[string]string

func (s Settings) Use(value, key string) string {
	if v, ok := os.LookupEnv("SCOPES_" + strings.ToUpper(key)); ok {
		return v
	}
	if v, ok := s[key]; ok {
		return v
	}
	return value
}