#![forbid(unsafe_code)]
#![warn(clippy::todo)]

/// Database abstraction layer for Kittybox, allowing the CMS to work with any kind of database.
pub mod database;
pub mod frontend;
pub mod tokenauth;
pub mod media;
pub mod micropub;
pub mod indieauth;

pub mod companion {
    use axum::{
        extract::{Extension, Path},
        response::IntoResponse
    };

    #[derive(Debug, Clone, Copy)]
    struct Resource {
        data: &'static [u8],
        mime: &'static str
    }

    type ResourceTable = std::sync::Arc<std::collections::HashMap<&'static str, Resource>>;

    #[tracing::instrument]
    async fn map_to_static(
        Path(name): Path<String>,
        Extension(resources): Extension<ResourceTable>
    ) -> impl IntoResponse {
        tracing::debug!("Searching for {} in the resource table...", name);
        if let Some(res) = resources.get(name.as_str()) {
            (axum::http::StatusCode::OK,
             [("Content-Type", res.mime)],
             res.data)
        } else {
            #[cfg(debug_assertions)]
            tracing::error!("Not found");
            (axum::http::StatusCode::NOT_FOUND,
             [("Content-Type", "text/plain")],
             "Not found. Sorry.".as_bytes())
        }
    }

    pub fn router() -> axum::Router {
        let resources = {
            let mut map = std::collections::HashMap::new();

            macro_rules! register_resource {
                ($prefix:literal, ($filename:literal, $mime:literal)) => {{
                    map.insert($filename, Resource {
                        data: include_bytes!(concat!($prefix, $filename)),
                        mime: $mime
                    })
                }};
                ($prefix:literal, ($filename:literal, $mime:literal), $( ($f:literal, $m:literal) ),+) => {{
                    register_resource!($prefix, ($filename, $mime));
                    register_resource!($prefix, $(($f, $m)),+);
                }};
            }

            register_resource! {
                "../companion-lite/",
                ("index.html", "text/html; charset=\"utf-8\""),
                ("main.js", "text/javascript"),
                ("micropub_api.js", "text/javascript"),
                ("style.css", "text/css")
            };

            std::sync::Arc::new(map)
        };

        axum::Router::new()
            .route(
                "/:filename",
                axum::routing::get(map_to_static)
                    .layer(Extension(resources))
            )
    }
}