use std::str::FromStr;

use librqbit_core::Id20;
use regex::Regex;
use url::Url;

pub enum Route {
    Info(Id20),
    List { page: Option<usize> },
    NotFound,
    Search,
}

impl Route {
    pub fn from_url(url: &Url) -> Self {
        let p = url.path().to_lowercase();
        let q = url.query();

        if p.is_empty() {
            return Self::List { page: None };
        }

        if let Ok(id) = Id20::from_str(p.trim_matches('/')) {
            return Self::Info(id);
        }

        if p == "/search" && q.is_none() {
            return Self::Search;
        }

        if Regex::new(r"^/(|search)").unwrap().is_match(&p) {
            return Self::List {
                page: Regex::new(r"/(\d+)$").unwrap().captures(&p).map(|c| {
                    c.get(1)
                        .map_or(1, |p| p.as_str().parse::<usize>().unwrap_or(1))
                }),
            };
        }

        Self::NotFound
    }
}