Config save and load start

Cargo.lock

@@ -1342,6 +1342,7 @@ checksum = "e2e054861b4bd027cd373e18e8d8d8e6548085000e41290d95ce0c373a654b4a"
 dependencies = [
  "getrandom 0.3.4",
  "js-sys",
+ "serde_core",
  "wasm-bindgen",
 ]
 

Cargo.toml

@@ -33,4 +33,4 @@ thiserror = { version = "2.0.17", optional = true }
 tokio = { version = "1.48.0", features = ["process", "rt-multi-thread", "macros", "io-std", "io-util"], optional = true }
 tokio-stream = { version = "0.1.17", features = ["full", "io-util", "signal", "tokio-util"], optional = true }
 tokio-util = { version = "0.7.17", features = ["full"], optional = true }
-uuid = { version = "1.19.0", features = ["v4"], optional = true }
+uuid = { version = "1.19.0", features = ["serde", "v4"], optional = true }

src/config/version.rs

@@ -3,18 +3,19 @@ use std::{
     str::FromStr,
 };
 
+use serde::{Deserialize, Serialize};
 use tokio::sync::watch;
 
 use crate::error::VersionError;
 
 /// Identifies the type of Minecraft distribution supported by the configuration.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub enum MinecraftType {
     Vanilla,
 }
 
 /// Semantic release version parsed from strings like `1.20.4`.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub struct Version {
     pub major: u32,
     pub minor: u32,
@@ -22,7 +23,7 @@ pub struct Version {
 }
 
 /// Snapshot version parsed from strings like `23w13b`.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub struct Snapshot {
     pub year: u32,
     pub week: u32,
@@ -30,7 +31,7 @@ pub struct Snapshot {
 }
 
 /// Enum covering both release and snapshot Minecraft version formats.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub enum MinecraftVersion {
     Release(Version),
     Snapshot(Snapshot),

src/error.rs

@@ -96,6 +96,9 @@ pub enum ServerError {
     NoEULA,
     #[error("Failed to write eula.txt")]
     WriteEULAFailed,
+
+    #[error("File io error")]
+    FileIO,
 }
 
 #[cfg(feature = "events")]

src/instance/handle.rs

@@ -20,6 +20,7 @@ use crate::{
         stream::{EventPayload, InternalEvent},
     },
     error::{HandleError, ServerError, SubscribeError},
+    server::domain::MineGuardConfig,
 };
 
 use super::{InstanceData, InstanceStatus};
@@ -44,6 +45,14 @@ pub struct InstanceHandle {
 }
 
 impl InstanceHandle {
+    pub fn new_with_config(config: MineGuardConfig) -> Result<Self, HandleError> {
+        InstanceHandle::new_with_params(
+            config.server_dir,
+            config.jar_path,
+            config.mc_version,
+            config.mc_type,
+        )
+    }
     pub fn new_with_params(
         root_dir: PathBuf,
         jar_path: PathBuf,

src/server/domain.rs

@@ -1,7 +1,9 @@
 use std::{ops::RangeInclusive, path::PathBuf, str::FromStr};
 
+use serde::{Deserialize, Serialize};
+use serde_json::json;
 use tokio::{
-    fs::{File, create_dir},
+    fs::{File, create_dir, read, read_dir},
     io::{self, AsyncWriteExt},
     sync::{RwLock, watch},
 };
@@ -9,21 +11,23 @@ use tokio_stream::wrappers::BroadcastStream;
 use uuid::Uuid;
 
 use crate::{
-    config::{MinecraftType, MinecraftVersion, StreamSource, Version, stream::InstanceEvent},
+    config::{self, MinecraftType, MinecraftVersion, StreamSource, Version, stream::InstanceEvent},
     error::{CreationError, ServerError, SubscribeError},
     instance::InstanceHandle,
     manifests::vanilla::{VanillaManifestV2, VanillaManifestV2Version, VanillaReleaseManifest},
     server,
 };
 
+#[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct MineGuardConfig {
     uuid: Uuid,
-    server_dir: PathBuf,
+    pub server_dir: PathBuf,
-    jar_path: PathBuf,
+    pub jar_path: PathBuf,
-    mc_version: MinecraftVersion,
+    pub mc_version: MinecraftVersion,
-    mc_type: MinecraftType,
+    pub mc_type: MinecraftType,
 }
 
+#[derive(Debug)]
 pub struct MineGuardServer {
     pub handle: RwLock<InstanceHandle>,
     pub config: RwLock<MineGuardConfig>,
@@ -42,6 +46,15 @@ impl MineGuardConfig {
 }
 
 impl MineGuardServer {
+    async fn load_cfg_handle(
+        config: MineGuardConfig,
+        handle: InstanceHandle,
+    ) -> Result<Self, CreationError> {
+        Ok(Self {
+            config: RwLock::new(config),
+            handle: RwLock::new(handle),
+        })
+    }
     pub async fn create(
         mc_version: MinecraftVersion,
         mc_type: MinecraftType,
@@ -62,6 +75,11 @@ impl MineGuardServer {
             .await
             .map_err(|_| CreationError::DirectoryError)?;
 
+        let internal_dir = server_root.join(".mineguard");
+        create_dir(internal_dir)
+            .await
+            .map_err(|_| CreationError::DirectoryError)?;
+
         let mut url = String::new();
 
         if mc_type == MinecraftType::Vanilla {
@@ -162,4 +180,69 @@ impl MineGuardServer {
 
         Ok(())
     }
+
+    pub async fn write_config(&self) -> Result<(), ServerError> {
+        let config_r = self.config.read().await;
+        let root_path = config_r.server_dir.clone();
+        let config_clone = config_r.clone();
+        drop(config_r);
+
+        let config_path = root_path.join(".mineguard/config.json");
+
+        let json = serde_json::to_vec_pretty(&config_clone).map_err(|_| ServerError::FileIO)?;
+
+        File::create(config_path)
+            .await
+            .map_err(|_| ServerError::FileIO)?
+            .write_all(&json)
+            .await
+            .map_err(|_| ServerError::FileIO)?;
+
+        Ok(())
+    }
+
+    pub async fn load(path: &PathBuf) -> Result<Self, CreationError> {
+        let config_path = path.join(".mineguard/config.json");
+
+        let data = read(config_path)
+            .await
+            .map_err(|_| CreationError::DirectoryError)?;
+
+        let config: MineGuardConfig =
+            serde_json::from_slice(&data).map_err(|_| CreationError::CreationError)?;
+        let handle = InstanceHandle::new_with_config(config.clone())
+            .map_err(|_| CreationError::CreationError)?;
+
+        MineGuardServer::load_cfg_handle(config, handle).await
+    }
+
+    pub async fn load_all(path: PathBuf) -> Result<Vec<Self>, CreationError> {
+        let mut dirs = Vec::new();
+        let mut entries = read_dir(path)
+            .await
+            .map_err(|_| CreationError::DirectoryError)?;
+
+        while let Some(entry) = entries
+            .next_entry()
+            .await
+            .map_err(|_| CreationError::DirectoryError)?
+        {
+            let meta = entry
+                .metadata()
+                .await
+                .map_err(|_| CreationError::DirectoryError)?;
+            if meta.is_dir() {
+                dirs.push(entry.path());
+            }
+        }
+
+        let mut servers: Vec<Self> = Vec::new();
+
+        for v in dirs {
+            println!("{}", v.to_str().unwrap());
+            servers.push(Self::load(&v).await?);
+        }
+
+        Ok(servers)
+    }
 }