use rocket::response;
use rocket::State;
use rocket_contrib::templates::Template;
use std::collections::HashMap;

use crate::Config;
use crate::strava;

#[get("/")]
fn index() -> Template {
    let mut context = HashMap::new();
    context.insert("parent", "layout");
    context.insert("message", "Hello, World");
    Template::render("index", context)
}

#[get("/link_strava_callback?<code>")]
fn link_strava_callback(config: State<Config>, code: String) -> Result<String, impl std::error::Error> {
    strava::exchange_token(
        &config.client_id, &config.client_secret, &code)
        .map(|t| format!("{:#?}", t))
}

#[get("/link_strava")]
fn link_strava(config: State<Config>) -> response::Redirect {
    response::Redirect::to(
        format!(
            concat!(
                "https://www.strava.com/oauth/authorize?",
                "client_id={}&",
                "response_type=code&",
                "redirect_uri={}&",
                "approval_prompt=force&",
                "scope=read",
            ),
            config.client_id,
            format!("{}/link_strava_callback", config.base_url))
    )
}

pub fn start(config: Config) {
    rocket::ignite()
        .manage(config)
        .mount("/", routes![index, link_strava, link_strava_callback])
        .attach(Template::fairing())
        .launch();
}