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type Config[S any] struct {
	// Usage is the one-line command usage string.
	Usage string
	// ArgsUsage is the positional-arguments usage string.
	ArgsUsage string
	// Description is the long help text.
	Description string
	// UsageError is returned when the resource name argument is missing.
	UsageError string
	// ParseSpec parses the raw name argument into the provider's version spec.
	ParseSpec func(arg string) (S, error)
	// NewPresenter builds the provider Presenter bound to the parsed spec (this
	// is where the provider constructs its AWS client and usecase).
	NewPresenter func(ctx context.Context, spec S) (Presenter, error)
}

type Options struct {
	ParseJSON bool
	NoPager   bool
	Raw       bool
	Output    output.Format
}

type Presenter interface {
	// Fetch resolves the version spec and loads the entry via the provider usecase.
	Fetch(ctx context.Context) error
	// Value returns the display value. When parseJSON is set it applies the
	// provider's parse-json rules (which may warn to stderr) and records internal
	// state used by the render methods.
	Value(parseJSON bool, stderr io.Writer) string
	// RenderText writes the metadata block followed by the value.
	RenderText(stdout io.Writer, value string)
	// RenderJSON writes the provider-specific JSON output.
	RenderJSON(stdout io.Writer, value string) error
}

type Runner struct {
	Presenter Presenter
	Options   Options
	Stdout    io.Writer
	Stderr    io.Writer
}