From 3d6f5a264ff3aff3121ffa0dd2960066c43ab106 Mon Sep 17 00:00:00 2001
From: Jonni Liljamo <jonni@liljamo.com>
Date: Thu, 22 Dec 2022 12:45:13 +0200
Subject: [PATCH] Generic functions for saving and loading

---
 sdbclient/src/util/mod.rs |  1 +
 sdbclient/src/util/sl.rs  | 89 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 sdbclient/src/util/sl.rs

diff --git a/sdbclient/src/util/mod.rs b/sdbclient/src/util/mod.rs
index 9ba9383..3bcda96 100644
--- a/sdbclient/src/util/mod.rs
+++ b/sdbclient/src/util/mod.rs
@@ -7,3 +7,4 @@
  */
 
 pub mod eguipwd;
+pub mod sl;
diff --git a/sdbclient/src/util/sl.rs b/sdbclient/src/util/sl.rs
new file mode 100644
index 0000000..dde58c6
--- /dev/null
+++ b/sdbclient/src/util/sl.rs
@@ -0,0 +1,89 @@
+/*
+ * This file is part of sdbclient
+ * Copyright (C) 2022 Jonni Liljamo <jonni@liljamo.com>
+ *
+ * Licensed under GPL-3.0-only.
+ * See LICENSE for licensing information.
+ */
+
+use bevy::prelude::*;
+use bevy_console::PrintConsoleLine;
+
+pub fn load<T: Default + for<'a> serde::Deserialize<'a>>(
+    file_path: &str,
+    mut console: EventWriter<PrintConsoleLine>,
+) -> T {
+    match std::path::Path::new(file_path).exists() {
+        true => {
+            console.send(PrintConsoleLine::new(format!(
+                "sl::load found '{}'",
+                file_path
+            )));
+            let yaml: Vec<u8> = std::fs::read(file_path.clone()).unwrap();
+            serde_json::from_str(std::str::from_utf8(&yaml).unwrap()).expect(&format!(
+                "sl::load couldn't deserialize the config at '{}'",
+                file_path
+            ))
+        }
+        false => {
+            console.send(PrintConsoleLine::new(format!(
+                "sl::load couldn't find '{}', using defaults",
+                file_path
+            )));
+            T::default()
+        }
+    }
+}
+
+pub fn save<T>(
+    target_dir: &str,
+    file_name: &str,
+    value: &T,
+    mut console: EventWriter<PrintConsoleLine>,
+) -> bool
+where
+    T: ?Sized + serde::Serialize,
+{
+    let file_path: String = format!("{}/{}", target_dir, file_name);
+    let yaml: String = serde_json::to_string(&value).unwrap();
+
+    match std::path::Path::new(target_dir).exists() {
+        true => {}
+        false => {
+            console.send(PrintConsoleLine::new(format!(
+                "sl::save creating target dir '{}'",
+                target_dir
+            )));
+            match std::fs::create_dir_all(target_dir) {
+                Ok(_) => {}
+                Err(_) => {
+                    console.send(PrintConsoleLine::new(format!(
+                        "sl::save couldn't create target dir '{}'",
+                        target_dir
+                    )));
+                    console.send(PrintConsoleLine::new(format!(
+                        "sl::save nothing will be saved!"
+                    )));
+                    return false;
+                }
+            }
+        }
+    }
+
+    match std::fs::write(&file_path, yaml) {
+        Ok(_) => {
+            console.send(PrintConsoleLine::new(format!(
+                "sl::save wrote file '{}'",
+                file_path
+            )));
+            true
+        }
+        Err(_) => {
+            console.send(PrintConsoleLine::new(format!(
+                "sl::save couldn't write file '{}'",
+                file_path
+            )));
+            false
+        }
+    }
+}
-- 
2.44.1