feat: add save_media_file

Author: matteobeltrami

src/file_conversion.rs

@@ -1,6 +1,23 @@
-use std::fs;
+use std::fs::{self, File};
 use std::path::Path;
 use crate::types::{MediaFile, TextFile};
+use std::io::Write;
+
+
+pub fn save_media_file(notification_from: &u8, file: &MediaFile) -> std::io::Result<()> {
+    let dir_name = format!("cached_files_{}", notification_from);
+    let dir_path = Path::new(&dir_name);
+    fs::create_dir_all(dir_path)?;
+
+    let file_name = format!("{}_{}", file.id, file.title, );
+    let file_path = dir_path.join(file_name);
+
+    let mut f = File::create(file_path)?;
+    for chunk in &file.content {
+        f.write_all(chunk)?;
+    }
+    Ok(())
+}
 
 /// Converts a file path into a `MediaFile`.
 ///