//! Askama template definitions for all HTML pages and fragments.
//!
//! Split by domain:
//! - `public`: forum directory, project, category, thread pages

mod public;

pub use public::*;

use askama::Template;
use axum::response::{Html, IntoResponse, Response};

/// CSRF token passed to templates; None when no session store is configured.
pub type CsrfTokenOption = Option<String>;

/// Convert any Askama template into an Axum response.
fn render_template<T: Template>(template: T) -> Response {
    match template.render() {
        Ok(html) => Html(html).into_response(),
        Err(err) => {
            tracing::error!(error = ?err, "template rendering error");
            // Static branded page, not the Error500 *template*: the engine that
            // just failed can't be trusted to render the fallback.
            crate::error_page::internal_error_static()
        }
    }
}

/// Implement `IntoResponse` for one or more Askama template structs.
macro_rules! impl_into_response {
    ($($T:ty),+ $(,)?) => {
        $(
            impl IntoResponse for $T {
                fn into_response(self) -> Response {
                    render_template(self)
                }
            }
        )+
    };
}

impl_into_response!(
    AccountSettingsTemplate,
    AdminCommunityTemplate,
    ForumDirectoryTemplate,
    CommunityTemplate,
    CategoryTemplate,
    ThreadTemplate,
    NewThreadTemplate,
    EditThreadTemplate,
    CommunitySettingsTemplate,
    EditCategoryTemplate,
    MembersTemplate,
    UserProfileTemplate,
    ModerationTemplate,
    ModLogTemplate,
    ChatTemplate,
    DeletedThreadsTemplate,
    AdminDashboardTemplate,
    TrackedThreadsTemplate,
    TrackingInfoTemplate,
    SearchResultsFragment,
    Error404Template,
    Error500Template,
);