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

pub fn query_xbps(ctx: Context, msg: Message, args: Vec<&str>) {
    if args.len() == 1 {
        // try by exact package name
        let response: SingleResponse = search(
            &format!("http://127.0.0.1:8197/v1/packages/x86_64/{}", &args[0]),
            |_e| Default::default(),
        );
        if response.data.name != "" {
            respond_with_results(msg.channel_id, &[response.data], &ctx);
            return;
        }
    }
    // fall back to regular queries
    let query = args.join(" ");
    let response: QueryResponse = search(
        &format!("http://127.0.0.1:8197/v1/query/x86_64?q={}", &query),
        |_e| unreachable!(),
    );
    if response.data.is_empty() {
        send(msg.channel_id, "No results", &ctx);
        return;
    }
    respond_with_results(msg.channel_id, &response.data, &ctx);
}

#[derive(Deserialize, Default)]
struct SingleResponse {
    data: Package,
}

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

#[derive(Deserialize, Default)]
struct Package {
    name: String,
    version: String,
    short_desc: String,
}

impl fmt::Display for Package {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            // We want to pad the name+version to correctly align the description,
            // but that only seems to be possible if they already are one string,
            // so we format them with a second `format!` call.
            // There must be a better way.
            "[ ] {: <30} {}",
            &format!("{}–{}", self.name, self.version),
            self.short_desc
        )
    }
}