use std::path::Path;

use crate::config::Config;
use crate::error::CustomError;

/// The supporting information used for converting the intermediate representation into the dust context for rendering.
#[derive(Debug, Clone)]
pub(crate) struct RenderContext<'intermediate> {
    pub(crate) config: &'intermediate Config,
    // TODO: Perhaps rename to output_root_directory.
    pub(crate) output_directory: &'intermediate Path,
    pub(crate) output_file: &'intermediate Path,

    /// An optional string that gets added to IDs in HTML.
    ///
    /// This is useful for cases where you may have conflicting HTML
    /// IDs, for example, multiple blog posts with footnotes in a blog
    /// stream.
    pub(crate) id_addition: Option<&'intermediate str>,
}

impl<'intermediate> RenderContext<'intermediate> {
    pub(crate) fn new(
        config: &'intermediate Config,
        output_directory: &'intermediate Path,
        output_file: &'intermediate Path,
        id_addition: Option<&'intermediate str>,
    ) -> Result<RenderContext<'intermediate>, CustomError> {
        Ok(RenderContext {
            config,
            output_directory,
            output_file,
            id_addition,
        })
    }
}