Added more stuff

launcher/src/prism.rs

@@ -0,0 +1,45 @@
+use std::{env, io::{Cursor, Seek}, path::PathBuf};
+use flate2::read::GzDecoder;
+use tar::Archive;
+
+use crate::{ftp, java, system_dirs::get_local_data_directory};
+
+
+pub fn check_prism() -> bool {
+    let path = get_local_data_directory().join("prism");
+    path.exists()
+}
+
+pub fn install_prism() -> Result<(), Box<dyn std::error::Error>>{
+    if check_prism() {
+        return Ok(());
+    }
+    java::install_java(21);
+    let path = PathBuf::new().join("prism").join(format!("prism-{}",if env::consts::OS == "windows" {"win.zip"} else {"lin.tar.gz"}));
+    let size = ftp::ftp_get_size(path.clone())?;
+    let mut buff = Cursor::new(vec![]);
+    let mut total = 0;
+    ftp::ftp_retr(path, &mut buff, |data| { 
+        total += data;
+        println!("Downloading Prism: {}MB / {}MB", total/(1024*1024), size/(1024*1024));
+    }).unwrap();
+    std::fs::create_dir_all(get_local_data_directory().join("prism"))?;
+    buff.rewind()?;
+    if env::consts::OS != "windows" {
+        let tar = GzDecoder::new(buff);
+        let mut archive = Archive::new(tar);
+        if !archive.unpack(get_local_data_directory().join("prism")).is_ok() {
+            std::fs::remove_dir_all(get_local_data_directory().join("prism"));
+        }
+    } else {
+        if !zip_extract::extract(buff, get_local_data_directory().join("prism").as_path(), true).is_ok() {
+            std::fs::remove_dir_all(get_local_data_directory().join("prism"));
+        }
+    }
+    
+    let buff = Cursor::new(vec![]);
+    ftp::ftp_retr(PathBuf, writer, callback)
+
+
+    Ok(())
+}