use super::macros::intermediate;
use super::registry::register_footnote_definition;
use super::registry::Registry;
use super::IAstNode;
use crate::error::CustomError;
use crate::intermediate::RefRegistry;

#[derive(Debug, Clone)]
pub(crate) struct IFootnoteDefinition {}

intermediate!(
    IFootnoteDefinition,
    FootnoteDefinition,
    original,
    registry,
    {
        register_footnote_definition(registry, original.label, &original.children).await?;
        Ok(IFootnoteDefinition {})
    }
);

#[derive(Debug)]
pub(crate) struct IRealFootnoteDefinition {
    pub(crate) footnote_id: usize,
    pub(crate) contents: Vec<IAstNode>,
}

impl IRealFootnoteDefinition {
    pub(crate) async fn new<'orig, 'parse>(
        registry: RefRegistry<'orig, 'parse>,
        footnote_id: usize,
        contents: Vec<IAstNode>,
    ) -> Result<IRealFootnoteDefinition, CustomError> {
        Ok(IRealFootnoteDefinition {
            footnote_id,
            contents,
        })
    }

    pub(crate) fn get_display_label(&self) -> String {
        format!("{}", self.footnote_id + 1)
    }

    /// Get an ID to refer to the first reference to this footnote definition.
    ///
    /// This ID could, for example, be used for the id attribute in HTML for the reference anchor tag.
    pub(crate) fn get_reference_id(&self) -> String {
        format!("fnr.{}", self.get_display_label())
    }

    /// Get an ID to refer to the footnote definition.
    ///
    /// This ID could, for example, be used for the id attribute in HTML for the definition anchor tag.
    pub(crate) fn get_definition_id(&self) -> String {
        format!("fn.{}", self.get_display_label())
    }
}