From 294c75823d323057e07d6791b9b8ffb6d139b03f Mon Sep 17 00:00:00 2001
From: Ilion Beyst <ilion.beyst@gmail.com>
Date: Wed, 26 Jan 2022 20:54:19 +0100
Subject: [PATCH] add endpoint for standalone upload of bot code

---
 planetwars-server/src/lib.rs         |  1 +
 planetwars-server/src/routes/demo.rs | 70 ++++++++++++++++++++++++++++
 planetwars-server/src/routes/mod.rs  |  1 +
 3 files changed, 72 insertions(+)
 create mode 100644 planetwars-server/src/routes/demo.rs

diff --git a/planetwars-server/src/lib.rs b/planetwars-server/src/lib.rs
index b5a204e..ea03fc3 100644
--- a/planetwars-server/src/lib.rs
+++ b/planetwars-server/src/lib.rs
@@ -54,6 +54,7 @@ pub async fn api() -> Router {
             get(routes::matches::list_matches).post(routes::matches::play_match),
         )
         .route("/matches/:match_id", get(routes::matches::get_match_log))
+        .route("/submit-bot", post(routes::demo::submit_bot))
         .layer(AddExtensionLayer::new(pool));
     api
 }
diff --git a/planetwars-server/src/routes/demo.rs b/planetwars-server/src/routes/demo.rs
new file mode 100644
index 0000000..bf375f0
--- /dev/null
+++ b/planetwars-server/src/routes/demo.rs
@@ -0,0 +1,70 @@
+use std::path::PathBuf;
+
+use axum::Json;
+use hyper::StatusCode;
+use planetwars_matchrunner::{docker_runner::DockerBotSpec, run_match, MatchConfig, MatchPlayer};
+use rand::{distributions::Alphanumeric, Rng};
+use serde::{Deserialize, Serialize};
+
+use crate::{DatabaseConnection, BOTS_DIR, MAPS_DIR, MATCHES_DIR};
+
+const PYTHON_IMAGE: &'static str = "python:3.10-slim-buster";
+const SIMPLEBOT_PATH: &'static str = "../simplebot";
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SubmitBotParams {
+    pub code: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SubmitBotResponse {
+    pub match_id: String,
+}
+
+pub fn gen_alphanumeric(length: usize) -> String {
+    rand::thread_rng()
+        .sample_iter(&Alphanumeric)
+        .take(length)
+        .map(char::from)
+        .collect()
+}
+
+/// submit python code for a bot, which will face off
+/// with a demo bot. Return a played match.
+pub async fn submit_bot(
+    Json(params): Json<SubmitBotParams>,
+) -> Result<Json<SubmitBotResponse>, StatusCode> {
+    let uploaded_bot_id: String = gen_alphanumeric(16);
+    let match_id = gen_alphanumeric(16);
+
+    let uploaded_bot_dir = PathBuf::from(BOTS_DIR).join(&uploaded_bot_id);
+    std::fs::create_dir(&uploaded_bot_dir).unwrap();
+    std::fs::write(uploaded_bot_dir.join("bot.py"), params.code.as_bytes()).unwrap();
+
+    run_match(MatchConfig {
+        map_path: PathBuf::from(MAPS_DIR).join("hex.json"),
+        map_name: "hex".to_string(),
+        log_path: PathBuf::from(MATCHES_DIR).join(format!("{}.log", match_id)),
+        players: vec![
+            MatchPlayer {
+                name: "bot".to_string(),
+                bot_spec: Box::new(DockerBotSpec {
+                    code_path: PathBuf::from(SIMPLEBOT_PATH),
+                    image: PYTHON_IMAGE.to_string(),
+                    argv: vec!["python".to_string(), "bot.py".to_string()],
+                }),
+            },
+            MatchPlayer {
+                name: "simplebot".to_string(),
+                bot_spec: Box::new(DockerBotSpec {
+                    code_path: PathBuf::from(SIMPLEBOT_PATH),
+                    image: PYTHON_IMAGE.to_string(),
+                    argv: vec!["python".to_string(), "simplebot.py".to_string()],
+                }),
+            },
+        ],
+    })
+    .await;
+
+    Ok(Json(SubmitBotResponse { match_id }))
+}
diff --git a/planetwars-server/src/routes/mod.rs b/planetwars-server/src/routes/mod.rs
index c2d3c44..b3decb8 100644
--- a/planetwars-server/src/routes/mod.rs
+++ b/planetwars-server/src/routes/mod.rs
@@ -1,3 +1,4 @@
 pub mod bots;
+pub mod demo;
 pub mod matches;
 pub mod users;