use log::debug;
use rocket::catch;
use rocket::response::Redirect;
use rocket_dyn_templates::Template;
use serde::Serialize;

// HELPERS AND ROUTES FOR 404 ERROR

#[derive(Debug, Serialize)]
pub struct ErrorContext {
    pub back: Option<String>,
    pub flash_name: Option<String>,
    pub flash_msg: Option<String>,
    pub title: Option<String>,
}

impl ErrorContext {
    pub fn build() -> ErrorContext {
        ErrorContext {
            back: None,
            flash_name: None,
            flash_msg: None,
            title: None,
        }
    }
}

#[catch(404)]
pub fn not_found() -> Template {
    debug!("404 Page Not Found");
    let mut context = ErrorContext::build();
    context.back = Some("/".to_string());
    context.title = Some("404: Page Not Found".to_string());
    context.flash_name = Some("error".to_string());
    context.flash_msg = Some("No resource found for given URL".to_string());

    Template::render("catchers/not_found", context)
}

// HELPERS AND ROUTES FOR 500 ERROR

#[catch(500)]
pub fn internal_error() -> Template {
    debug!("500 Internal Server Error");
    let mut context = ErrorContext::build();
    context.back = Some("/".to_string());
    context.title = Some("500: Internal Server Error".to_string());
    context.flash_name = Some("error".to_string());
    context.flash_msg = Some("Internal server error".to_string());

    Template::render("catchers/internal_error", context)
}

// HELPERS AND ROUTES FOR 403 FORBIDDEN

#[catch(403)]
pub fn forbidden() -> Redirect {
    debug!("403 Forbidden");
    Redirect::to("/login")
}