use anyhow::{anyhow, Result};
use async_trait::async_trait;
use cookie::Cookie;
use url::Host;

use crate::newspaper::{Metadata, Newspaper};
use crate::tools;
use crate::Url;
use crate::{Download, Downloader};

pub enum Login {
    Username(String, String),
    MPRUUID(String),
}

#[derive(Debug, Clone, Default)]
pub struct Mediapart {
    login_cookie: (String, String),
}

fn str_to_host<S: Into<String>>(host: S) -> Host {
    Host::Domain(host.into())
}

#[derive(Debug, Clone, Default)]
pub struct Builder {
    login_cookie: Option<(String, String)>,
}

impl Builder {
    pub fn login(&mut self, login: Login) -> &mut Self {
        self.login_cookie = match login {
            Login::Username(_username, _password) => {
                unimplemented!("login using username and passwond not implemented")
            }
            Login::MPRUUID(cookie_value) => Some(("MPRUUID".into(), cookie_value)),
        };
        self
    }

    pub fn build(&self) -> Result<Mediapart> {
        match &self.login_cookie {
            Some(login_cookie) => Ok(Mediapart {
                login_cookie: login_cookie.clone(),
            }),
            None => Err(anyhow!("You have to log in to access this newspaper")),
        }
    }
}

#[async_trait]
impl Newspaper for Mediapart {
    fn metadata(&self) -> Metadata {
        Metadata::builder()
            .hosts(vec![
                str_to_host("mediapart.fr"),
                str_to_host("www.mediapart.fr"),
            ])
            .lower_case_name("mediapart")
            .name("Médiapart")
            .build()
            .unwrap_or_default()
    }

    async fn retrieve_html(&self, url: &Url) -> Result<String> {
        let initial_query = url.query();
        let query = match initial_query {
            Some(q) => format!("{}&onglet=full", q),
            None => "onglet=full".into(),
        };
        let mut url = url.clone();
        url.set_query(Some(&query));

        let cookie = Cookie::build(&self.login_cookie.0, &self.login_cookie.1)
            .secure(true)
            .finish();
        let cookies = vec![cookie];

        // TODO: replace by builder
        let downloader = Downloader { cookies };

        let body = downloader.download(&url).await?;
        let html = String::from_utf8(body.to_vec())?;

        // TODO: Move to const
        let element_to_remove = [
            // header
            ".fb-root",
            ".skipLinks",
            ".js-flash-message",
            ".header-sticky.sticky-links",
            "nav.main-menu",
            // menus inside and social media buttons
            "ul.sub-menu-journal",
            ".tools-social",
            ".simple-list.universe-journal",
            ".simple-list.universe-club",
            // Footer
            "footer",
            // Misc
            "aside.cc-modal",
        ];

        let single_page_html =
            tools::self_contained_html(&html, &downloader, &url, &element_to_remove).await;
        Ok(single_page_html)
    }

    fn new() -> Self {
        Self {
            ..Default::default()
        }
    }

    async fn has_complete_access(&self) -> bool {
        // TODO:  check if we are logged using the cookie
        true
    }
}

impl Mediapart {
    pub fn builder() -> Builder {
        Builder::default()
    }
}