package config

import (
	"io"
	"os"
)

// Defines the consumption of different types of input sources.
type Source interface {
	// Get the data.
	Pull() (string, error)
}

// A source coming from a string.
type StringSource struct{ data string }

func (this StringSource) Pull() (string, error) { return this.data, nil }

// A source coming from standard input.
type StdinSource struct{}

func (this StdinSource) Pull() (string, error) {
	data, err := io.ReadAll(os.Stdin)
	if err != nil {
		return "", err
	}

	return string(data), nil
}