package db

import "fmt"

var database map[string]any = map[string]any{}

func Add(key string, value any) error {
	_, existing := database[key]
	if existing {
		return fmt.Errorf("A value already exists under '%s'", key)
	}
	database[key] = value
	return nil
}

func Set(key string, value any) {
	database[key] = value
}

func Get(key string) any {
	value, existing := database[key]
	if !existing {
		return fmt.Errorf("No value under '%s'", key)
	}
	return value
}

func Remove(key string) any {
	value, existing := database[key]
	if !existing {
		return fmt.Errorf("No value under '%s'", key)
	}
	delete(database, key)
	return value
}

func Exists(key string) bool {
	_, existing := database[key]
	return existing
}