feat: add saving and reading server setting from config file

Cargo.lock

@@ -127,12 +127,14 @@ dependencies = [
 name = "checkers"
 version = "0.0.1"
 dependencies = [
+ "dirs",
  "env_logger",
  "log",
  "postcard",
  "rand",
  "serde",
  "tokio",
+ "toml",
  "uuid",
 ]
 
@@ -197,6 +199,27 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "dirs"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys",
+]
+
 [[package]]
 name = "embedded-io"
 version = "0.4.0"
@@ -278,6 +301,17 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.4.2"
@@ -425,6 +459,15 @@ version = "0.2.189"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
+[[package]]
+name = "libredox"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d0a00925a9f930d679b6789b721e3a7f9ed110f41b86d2497caa780c3a070a"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.14"
@@ -469,6 +512,12 @@ version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -567,7 +616,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c7f5fa3a058cd35567ef9bfa5e75732bee0f9e4c55fa90477bef2dfcdbc4be80"
 dependencies = [
  "chacha20",
- "getrandom",
+ "getrandom 0.4.2",
  "rand_core",
 ]
 
@@ -586,6 +635,17 @@ dependencies = [
  "bitflags 2.13.1",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
+dependencies = [
+ "getrandom 0.2.17",
+ "libredox",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.13.1"
@@ -685,6 +745,15 @@ dependencies = [
  "zmij",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6662b5879511e06e8999a8a235d848113e942c9124f211511b16466ee2995f26"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.8"
@@ -802,6 +871,45 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "toml"
+version = "1.1.4+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3aace63f4bbcdfc2c965b059de67119c89c4017a70d633be6c104910f67056f5"
+dependencies = [
+ "indexmap",
+ "serde_core",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_parser",
+ "toml_writer",
+ "winnow",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "1.1.1+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3165f65f62e28e0115a00b2ebdd37eb6f3b641855f9d636d3cd4103767159ad7"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.1.3+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d38ac1cf9b95face32296c0a3ede1fdc270627c9d9c02a7274dd6d960dc4d56"
+dependencies = [
+ "winnow",
+]
+
+[[package]]
+name = "toml_writer"
+version = "1.1.2+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d56353a2a665ad0f41a421187180aab746c8c325620617ad883a99a1cbe66d2"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.24"
@@ -826,7 +934,7 @@ version = "1.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf3923a6f5c4c6382e0b653c4117f48d631ea17f38ed86e2a828e6f7412f5239"
 dependencies = [
- "getrandom",
+ "getrandom 0.4.2",
  "js-sys",
  "serde_core",
  "wasm-bindgen",
@@ -950,6 +1058,12 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "winnow"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b97319f7b8343df12cc98938e5c3eb436064524c8d2b4e30a1d3a36eecdf81"
+
 [[package]]
 name = "wit-bindgen"
 version = "0.51.0"

Cargo.toml

@@ -10,12 +10,14 @@ authors = [ "szymon-jozef" ]
 edition = "2024"
 
 [dependencies]
+dirs = "6.0.0"
 env_logger = "0.11.11"
 log = "0.4.33"
 postcard = { version = "1.1.3", features = ["alloc"] }
 rand = "0.10.2"
 serde = { version = "1.0.229", features = ["derive"] }
 tokio = { version = "1.53.1", features = ["full"] }
+toml = "1.1.4"
 
 [dependencies.uuid]
 version = "1.24.0"

src/lib.rs

@@ -1,2 +1,3 @@
 pub mod logic;
 pub mod network;
+pub mod settings;

src/network/server.rs

@@ -23,15 +23,9 @@ use crate::{
         },
         network_identity::NetworkServerIdentity,
     },
+    settings::{general_settings::SettingsLike, server_settings::ServerSettings},
 };
 
-// TODO! More settings!
-pub struct ServerSettings {
-    pub addr: SocketAddr,
-    pub max_connections: usize,
-    pub allow_spectators: bool,
-}
-
 #[derive(PartialEq)]
 enum ServerStage {
     Lobby,
@@ -71,11 +65,7 @@ pub struct Server {
 impl Server {
     pub async fn new() -> Server {
         // TODO! Should be read from a file
-        let settings = ServerSettings {
+        let settings = ServerSettings::new();
-            addr: SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 6767),
-            max_connections: 2,
-            allow_spectators: false,
-        };
 
         let (sender, reciever) =
             tokio::sync::mpsc::channel::<(SocketAddr, Message<ClientMessage>)>(1024); // random

src/settings/general_settings.rs

@@ -0,0 +1,48 @@
+use core::error;
+use std::path::PathBuf;
+
+use log::warn;
+use serde::{Serialize, de::DeserializeOwned};
+
+// maybe consider some better name for this
+pub trait SettingsLike: Serialize + DeserializeOwned + Default {
+    fn get_config_dir() -> Result<PathBuf, Box<dyn error::Error>> {
+        Ok(dirs::config_local_dir()
+            .ok_or("Couldn't get config dir!")?
+            .join("checkers"))
+    }
+
+    fn get_file_path() -> Result<PathBuf, Box<dyn error::Error>>;
+
+    fn save_to_file(&self) -> Result<(), Box<dyn error::Error>> {
+        let path: PathBuf = Self::get_file_path()?;
+
+        if let Some(parent_dir) = path.parent() {
+            std::fs::create_dir_all(parent_dir)?;
+        }
+
+        let toml = toml::to_string(&self)?;
+        std::fs::write(path, toml)?;
+
+        Ok(())
+    }
+
+    fn read_from_file() -> Result<Self, Box<dyn error::Error>> {
+        Ok(toml::from_slice(&std::fs::read(Self::get_file_path()?)?)?) // i love rust
+    }
+
+    fn new() -> Self {
+        match Self::read_from_file() {
+            Ok(settings) => return settings,
+            Err(e) => warn!("Could not load settings from file, because: {}", e),
+        }
+
+        let settings = Self::default();
+
+        if let Err(e) = settings.save_to_file() {
+            warn!("Could not save server settings to the file, because: {}", e);
+        }
+
+        settings
+    }
+}

src/settings/mod.rs

@@ -0,0 +1,2 @@
+pub mod general_settings;
+pub mod server_settings;

src/settings/server_settings.rs

@@ -0,0 +1,33 @@
+use std::{
+    net::{IpAddr, Ipv4Addr, SocketAddr},
+    path::PathBuf,
+};
+
+use serde::{Deserialize, Serialize};
+
+use crate::settings::general_settings::SettingsLike;
+
+// TODO! More settings!
+#[derive(Serialize, Deserialize)]
+pub struct ServerSettings {
+    pub addr: SocketAddr,
+    pub max_connections: usize,
+    pub allow_spectators: bool,
+}
+
+impl SettingsLike for ServerSettings {
+    fn get_file_path() -> Result<PathBuf, Box<dyn std::error::Error>> {
+        Ok(Self::get_config_dir()?.join("server.toml"))
+    }
+}
+
+impl Default for ServerSettings {
+    fn default() -> Self {
+        Self {
+            addr: SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 6767),
+            max_connections: 2, // Maybe this should be a const somewhere in the server code? It
+            // makes no sense to have different value than this
+            allow_spectators: false,
+        }
+    }
+}