dotfiles/src/update.rs

use std::env::current_exe;
use std::fs;
use std::fs::File;
use std::os::unix::process::CommandExt;
use std::path::Path;
use serde::Deserialize;

#[derive(Debug, Deserialize)]
struct PackageEntry {
    version: String
}

const GITEA_KEY: &str = "1e9527c38c98b297dbdaaf39c060e075b2729464";

pub fn check_for_updates(version: &str) {
    let version: u64 = version.parse().unwrap();
    print!("Checking for updates... ");
    let resp: Vec<PackageEntry> = attohttpc::get("https://gitea.mattv.de/api/v1/packages/root?type=generic&q=installer")
        .header("accept", "application/json")
        .header("Authorization", format!("token {GITEA_KEY}"))
        .send().unwrap().json().unwrap();
    let newest = resp.into_iter()
        .map(|entry| entry.version.parse::<u64>().unwrap())
        .max().unwrap();
    if newest > version {
        println!("New version {newest}");
        let exe = current_exe().unwrap();
        let temp = Path::new("temp");

        print!("Downloading... ");
        attohttpc::get(format!("https://gitea.mattv.de/api/packages/root/generic/installer/{newest}/installer-amd64"))
            .header("Authorization", format!("token {GITEA_KEY}"))
            .send().unwrap().write_to(File::create(temp).unwrap()).unwrap();
        println!("Done");

        fs::set_permissions(&temp, exe.metadata().unwrap().permissions()).unwrap();

        fs::rename(&temp, &exe).unwrap();

        std::process::Command::new(exe).exec();
        std::process::exit(1);
    }
    println!("No new version");
}