From 98ee910ce10c10405833c6974e271e1e3309226b Mon Sep 17 00:00:00 2001
From: Rusty Striker <avivr903@tutanota.com>
Date: Mon, 14 Jul 2025 21:48:48 +0300
Subject: [PATCH] basic save for game server

---
 .gitignore  |  1 +
 src/lib.rs  | 33 +++++++++++++++++++++++++++++++--
 src/main.rs |  7 ++++++-
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index ea8c4bf..f6c313c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+/data
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 3a8dc3c..7e9092d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,17 +7,24 @@ use game::{
     entry::{ActionDefinition, DiceRoll},
 };
 use serde::{Deserialize, Serialize};
-use tokio::sync::{broadcast, mpsc};
+use tokio::{
+    sync::{broadcast, mpsc},
+    time::Instant,
+};
 
 pub mod api;
 pub mod game;
 pub mod pathfinder2r_impl;
 pub mod user;
 
+pub const GAME_SAVE_FILE: &str = "data/game.json";
+
 #[derive(Serialize, Deserialize)]
 pub struct GameServer {
     game: Game<pathfinder2r_impl::Pathfinder2rCharacterSheet, pathfinder2r_impl::entry::Entry>,
     chat: Vec<(String, ChatMessage)>,
+    #[serde(skip, default = "default_last_save_time")]
+    last_save_time: Instant,
     // we dont want to save the logged users as it will always be empty when the server restarts
     #[serde(skip)]
     /// Logged in users, bool value used to know if the user is an admin or not
@@ -25,6 +32,10 @@ pub struct GameServer {
     // TODO: JEESH REPLACE THIS WITH A DATABASE AND PROPER SECURITY ONCE ITS DONE PLEASE GOD
     creds: HashMap<String, String>,
 }
+/// This is needed for the default value in GameServer.last_save_time
+fn default_last_save_time() -> Instant {
+    Instant::now()
+}
 impl GameServer {
     pub fn new() -> Self {
         let mut creds = HashMap::new();
@@ -51,11 +62,19 @@ impl GameServer {
                     )))
                     .with_action(ActionDefinition::new("Attack -1".to_string())),
             )],
+            last_save_time: Instant::now(),
             users: HashMap::new(),
             creds,
         }
     }
 
+    pub async fn save(&self) {
+        let _ = tokio::fs::create_dir("data").await;
+        if let Ok(json) = serde_json::to_string(self) {
+            let _ = tokio::fs::write(GAME_SAVE_FILE, json.as_bytes()).await;
+        }
+    }
+
     pub async fn server_loop(
         mut self,
         mut msgs: mpsc::Receiver<(String, api::Request)>,
@@ -206,7 +225,11 @@ impl GameServer {
                     }
                     _ = broadcast.send((Some(id), api::Response::Shutdown));
                 }
-                api::Request::Shutdown => break,
+                api::Request::Shutdown => {
+                    if *self.users.get(&id).unwrap_or(&false) {
+                        break;
+                    }
+                }
                 api::Request::CharacterDisplay { id: _ } => {}
                 api::Request::CharacterInputs { id: _ } => todo!(),
                 api::Request::CharacterGetField { id: _, field: _ } => todo!(),
@@ -217,8 +240,14 @@ impl GameServer {
                 } => todo!(),
                 api::Request::CharacterAssign { id: _, user: _ } => todo!(),
             }
+            // Auto save every 5 minutes, once a request is received
+            // TODO: Export the auto save time
+            if self.last_save_time.elapsed().as_secs() > 5 * 60 {
+                self.save().await;
+            }
         }
         _ = broadcast.send((None, api::Response::Shutdown));
+        self.save().await; // Save the game one last time :)
     }
 
     fn get_scene_list(&self, id: &str) -> api::Response {
diff --git a/src/main.rs b/src/main.rs
index 8c5e2c9..1fff156 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -30,7 +30,12 @@ async fn main() {
         );
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:3001").await.unwrap();
-    let game = open_tavern::GameServer::new();
+    let game = tokio::fs::read_to_string(open_tavern::GAME_SAVE_FILE)
+        .await
+        .map(|s| serde_json::from_str(&s).ok())
+        .ok()
+        .flatten()
+        .unwrap_or(open_tavern::GameServer::new());
     tokio::spawn(game.server_loop(mrecv, bsend));
 
     println!("Server is running at http://localhost:3001");