use std::collections::HashMap;

use reqwest::Client;
use serde::Deserialize;

#[derive(Deserialize)]
struct ForgeVersionResponse {
    promos: HashMap<String, String>,
}

pub async fn newest_forge_version(
    http: &Client,
    mcversion: &str,
) -> anyhow::Result<Option<String>> {
    let resp = http
        .get("https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json")
        .send()
        .await?
        .bytes()
        .await?;

    let mut resp = json5::from_str::<ForgeVersionResponse>(std::str::from_utf8(&resp)?)?;

    Ok(resp.promos.remove(&format!("{}-latest", mcversion)))
}

#[inline]
pub fn parse_version(version: &str) -> Option<&str> {
    version.split('-').nth(1)
}