use crate::commands::*;
use serde::Deserialize;
use serenity::model::channel::Message;
use std::fmt;

pub fn query_pacman(ctx: Context, msg: Message, args: Vec<&str>) {
   if args.len() == 1 {
        // try by full package name
        let response: Response = search(
            &format!(
                "https://www.archlinux.org/packages/search/json/?name={}",
                &args[0]
            ),
            |_e| EMPTY_RESULT,
        );
        // this is 1 for most packages and 2 if there’s a second version in testing
        if response.results.len() != 0 {
            respond_with_results(msg.channel_id, &response.results, &ctx);
            return;
        }
    }
    let query = args.join(" ");
    let response: Response = search(
        &format!(
            "https://www.archlinux.org/packages/search/json/?q={}",
            &query
        ),
        |_e| EMPTY_RESULT,
    );
    if response.results.is_empty() {
        send(msg.channel_id, "No results", &ctx);
        return;
    }
    respond_with_results(msg.channel_id, &response.results, &ctx);
}

const EMPTY_RESULT: Response = Response {
    results: Vec::new(),
};

#[derive(Deserialize)]
struct Response {
    results: Vec<Package>,
}

#[derive(Deserialize)]
struct Package {
    pkgname: String,
    //pkgbase: String,
    repo: String,
    pkgver: String,
    pkgdesc: String,
    //url: String,
    //compressed_size: i64,
    //installed_size: i64,
    //build_date: String,
    //last_update: String,
    //flag_date: Option<String>,
}

impl fmt::Display for Package {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            "{}/{} {}\n    {}",
            self.repo, self.pkgname, self.pkgver, self.pkgdesc
        )
    }
}