use ramhorns::{Content, Ramhorns};

/// Structure used in the config variable of the app
#[derive(Clone, Debug)]
pub struct Template {
    /// Root directory where templates are stored
    pub directory: String,
    /// App name
    pub app_name: String,
    /// URL of app
    pub url: String,
    /// Name of user
    pub name: Option<String>,
}

/// Structure used by /routes/*.rs
#[derive(Debug, Default)]
pub struct Infos {
    /// Title
    pub page_title: Option<String>,
    /// Description
    pub page_desc: Option<String>,
    /// Keywords
    pub page_kw: Option<String>,
}

#[derive(Content, Debug, Default)]
pub struct NavBar {
    pub index: bool,
    pub blog: bool,
    pub portfolio: bool,
    pub contact: bool,
    pub contrib: bool,
    pub cours: bool,
}

/// Final structure given to template
#[derive(Content, Debug)]
struct Data<T> {
    /// App name
    app_name: String,
    /// App URL
    url: String,
    /// Title of the page
    page_title: Option<String>,
    /// Description of the page
    page_desc: Option<String>,
    /// Keywords of the the page
    page_kw: Option<String>,
    /// Author's name
    page_author: Option<String>,
    /// Data needed to render the page
    data: T,
}

impl Template {
    pub fn render<C: Content>(&self, template: &str, data: C, info: Infos) -> String {
        let mut templates: Ramhorns = Ramhorns::lazy(&self.directory).unwrap();
        let tplt = templates.from_file(template).unwrap();

        tplt.render(&Data {
            app_name: self.app_name.to_owned(),
            url: self.url.to_owned(),
            page_title: info.page_title,
            page_desc: info.page_desc,
            page_kw: info.page_kw,
            page_author: self.name.clone(),
            data,
        })
    }
}