use super::HtmlShell;
use crate::error_pages::{ErrorPageData, ErrorPages};
use crate::translator::Translator;
use crate::SsrNode;
use std::rc::Rc;

/// Prepares an HTMl error page for the client, with injected markers for hydration. In the event of an error, this should be returned to the client (with the appropriate status code) to allow Perseus
/// to hydrate and display the correct error page. Note that this is only for use in initial loads (other systems handle errors in subsequent loads, and the app shell
/// exists then so the server doesn't have to do nearly as much work).
pub fn build_error_page(
    url: &str,
    status: u16,
    // This should already have been transformed into a string (with a source chain etc.)
    err: &str,
    translator: Option<Rc<Translator>>,
    error_pages: &ErrorPages<SsrNode>,
    html_shell: &HtmlShell,
) -> String {
    let error_html = error_pages.render_to_string(url, status, err, translator);
    // We create a JSON representation of the data necessary to hydrate the error page on the client-side
    // Right now, translators are never included in transmitted error pages
    let error_page_data = ErrorPageData {
        url: url.to_string(),
        status,
        err: err.to_string(),
    };

    html_shell
        .clone()
        .error_page(&error_page_data, &error_html)
        .to_string()
}