type AttributesOptionsSliceProvider interface {
	AttributesSlice() []attributes.Attribute
	OptionsSlice() []attributes.Attribute
}

type AttributesProvider interface {
	Attributes() map[string]interface{}
}

type CodeBlockRenderer interface {
	RenderCodeblock(w hugio.FlexiWriter, ctx CodeblockContext) error
	identity.Provider
}

type CodeblockContext interface {
	AttributesProvider
	text.Positioner
	Options() map[string]interface{}
	Type() string
	Inner() string
	Ordinal() int
	Page() interface{}
}

type ElementPositionResolver interface {
	ResolvePosition(ctx interface{}) text.Position
}

type GetRendererFunc func(t RendererType, id interface{}) interface{}

type HeadingContext interface {
	// Page is the page containing the heading.
	Page() interface{}
	// Level is the level of the header (i.e. 1 for top-level, 2 for sub-level, etc.).
	Level() int
	// Anchor is the HTML id assigned to the heading.
	Anchor() string
	// Text is the rendered (HTML) heading text, excluding the heading marker.
	Text() hstring.RenderedString
	// PlainText is the unrendered version of Text.
	PlainText() string

	// Attributes (e.g. CSS classes)
	AttributesProvider
}

type HeadingRenderer interface {
	// Render writes the rendered content to w using the data in w.
	RenderHeading(w io.Writer, ctx HeadingContext) error
	identity.Provider
}

type IsDefaultCodeBlockRendererProvider interface {
	IsDefaultCodeBlockRenderer() bool
}

type LinkContext interface {
	Page() interface{}
	Destination() string
	Title() string
	Text() hstring.RenderedString
	PlainText() string
}

type LinkRenderer interface {
	RenderLink(w io.Writer, ctx LinkContext) error
	identity.Provider
}

type RendererType int

const (
	LinkRendererType RendererType = iota + 1
	ImageRendererType
	HeadingRendererType
	CodeBlockRendererType
)