markdown

type Document struct {
	// Meta is the document's metadata in the Markdown "front matter", if any.
	Meta Metadata

	// Title is taken from the metadata (if it exists) or else from the text content of the first
	// heading.
	Title string

	// HTML is the rendered Markdown content.
	HTML []byte

	// Tree is the tree of sections (used to show a table of contents).
	Tree []*SectionNode
}

type FuncInfo struct {
	Version string // the version of the content containing the page to render
}

type FuncMap map[string]func(context.Context, FuncInfo, map[string]string) (string, error)

type Metadata struct {
	Title                       string `yaml:"title"`
	IgnoreDisconnectedPageCheck bool   `yaml:"ignoreDisconnectedPageCheck"`
}

type Options struct {
	// Base is the base URL (typically including only the path, such as "/" or "/help/") to use when
	// resolving relative links.
	Base *url.URL

	// ContentFilePathToLinkPath converts references to file paths of other content files to the URL
	// path to use in links. For example, ContentFilePathToLinkPath("a/index.md") == "a".
	ContentFilePathToLinkPath func(string) string

	// Funcs are custom functions that can be invoked within Markdown documents with
	// <markdownfuncjfunction-name arg="val" />.
	Funcs FuncMap

	// FuncInfo contains information passed to Markdown functions about the current execution
	// context.
	FuncInfo FuncInfo
}

type SectionNode struct {
	Title    string         // section title
	URL      string         // section URL (usually an anchor link)
	Level    int            // heading level (1–6)
	Children []*SectionNode // subsections
}