auto create log directory if it's missing, or continue without logging

src/bin/main.rs

@@ -15,6 +15,17 @@ use entity::item::{NewItemEntity, ItemDetail, InventoryItemEntity};
 use entity::item;
 
 fn setup_logger() {
+    match std::fs::create_dir(std::path::Path::new("log")) {
+        Ok(_) => {},
+        Err(e) => match e.kind() {
+            std::io::ErrorKind::AlreadyExists => {},
+            _ => {
+                println!("Error creating log directory. Error: {}", e); // Probably a permission issue
+                return; // Continue without logging into a file
+            },
+        },
+    };
+
     let colors = fern::colors::ColoredLevelConfig::new()
         .error(fern::colors::Color::Red)
         .warn(fern::colors::Color::Yellow)