package configkit

import (
	"io"

	"gitea.maximumdirect.net/eric/ConfigKit/internal/engine"
)

// Source is an opaque configuration input. Construct sources with File, Bytes,
// Reader, or NoSource; the zero value is invalid.
type Source struct{ value engine.Source }

// File returns a source that reopens path for every load attempt.
func File(path string) Source { return Source{value: engine.File(path)} }

// Bytes snapshots data immediately.
func Bytes(label string, data []byte) Source { return Source{value: engine.Bytes(label, data)} }

// Reader returns a single-use source. Copies share the same single-use claim.
func Reader(label string, input io.Reader) Source { return Source{value: engine.Reader(label, input)} }

// NoSource explicitly selects defaults-only input.
func NoSource() Source { return Source{value: engine.NoSource()} }

func (s Source) toEngine() engine.Source { return s.value }