pub(all) enum CliCommand {
  Toc(String)
  Section(String, String)
  ParseOutput(ToolOutput)
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct Heading {
  level : Int
  title : String
  line : Int
  end_line : Int
  path : Array[String]
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct Section {
  heading : Heading
  content : String
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) enum ToolOutput {
  Stdout(String)
  Stderr(String)
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

fn get_section(markdown : String, query : String) -> Section?

fn parse_command(argv : Array[String]) -> CliCommand

fn read_toc(markdown : String) -> Array[Heading]

fn render_section(markdown : String, file_path : String, query : String) -> String?

fn render_toc(markdown : String, file_path? : String) -> String

fn section_tool(file_path : String, markdown : String, query : String) -> ToolOutput

fn toc_tool(file_path : String, markdown : String) -> ToolOutput