package config

import (
	"arno/skeletor/service"

	"github.com/pkg/errors"
)

const ServiceName service.Name = "config"

func ServiceProvider(config *Config) service.Provider {
	return func(ctn *service.Container) (interface{}, error) {
		return config, nil
	}
}

func From(container *service.Container) (*Config, error) {
	service, err := container.Service(ServiceName)
	if err != nil {
		return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
	}

	srv, ok := service.(*Config)
	if !ok {
		return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
	}

	return srv, nil
}

func Must(container *service.Container) *Config {
	srv, err := From(container)
	if err != nil {
		panic(err)
	}

	return srv
}