make it possible to implement another lanaguage than python

src/executor.rs

@@ -0,0 +1,30 @@
+use crate::executor::python::PythonExecutor;
+
+
+pub mod python;
+pub mod helper;
+
+pub fn executors() -> Vec<Box<dyn Executor>> {
+    vec![
+        Box::new(PythonExecutor {}),
+
+    ]
+}
+
+pub fn executors_id() -> Vec<String> {
+    executors()
+        .iter()
+            .map(|x| x.id())
+        .collect()
+}
+
+pub fn get_executor<'a, T: Into<String>>(id: T, executors: &'a Vec<Box<dyn Executor>>) -> Option<&'a Box<dyn Executor>> {
+    let id: String = id.into();
+    let found = executors.iter().find(|x| x.id() == id);
+    found
+}
+
+pub trait Executor {
+    fn id(&self) -> String;
+    fn exec(&self, code: String) -> Result<String, String>;
+}

src/executor/helper.rs

@@ -0,0 +1,30 @@
+use std::{fs::create_dir_all, process::ExitStatus};
+
+use rand::{distributions::Alphanumeric, Rng, thread_rng};
+
+pub fn assure_dir_exists() -> Result<(), std::io::Error> {
+    create_dir_all("/tmp/sandy-tmp")?;
+    Ok(())
+}
+
+pub fn create_path() -> String {
+    let name = thread_rng()
+        .sample_iter(&Alphanumeric)
+        .take(64)
+        .map(char::from)
+        .collect::<String>();
+    format!("/tmp/sandy-tmp/{name}")
+}
+
+pub fn exit_code_msg(code: ExitStatus) -> String {
+    let status = code.code();
+    if let Some(status) = status {       
+        if status != 0 {
+            format!("<span style='color:red;font-weight:bolder'>Command exited with code {status}</span>")
+        } else {
+            "Command exited with code 0".into()
+        }
+    } else {
+        "Command exited with unknown code".into()
+    }
+}

src/executor/python.rs

@@ -0,0 +1,51 @@
+use std::fs;
+use std::io::Read;
+use std::process::Command;
+use std::process::Stdio;
+
+use super::Executor;
+
+use super::helper::*;
+
+#[derive(Debug, Clone, Copy)]
+pub struct PythonExecutor {}
+
+impl Executor for PythonExecutor {
+    fn id(&self) -> String {
+        "python".into()
+    }
+
+    fn exec(&self, code: String) -> Result<String, String> {
+        assure_dir_exists().map_err(|x| x.to_string())?;
+
+        let path = create_path();
+
+        // 1. Save the code
+        fs::write(path.clone(), code).map_err(|x| x.to_string())?;
+
+        // 2. Run
+        let mut out = Command::new("python")
+            .arg(path.clone())
+            .stdout(Stdio::piped())
+            .spawn()
+            .unwrap();
+
+        // 3. Grab the stuff and exit
+        let exit_status = out.wait().map_err(|x| x.to_string())?;
+
+        let mut stdout: String = "".into();
+
+        if let Some(mut sout) = out.stdout {
+            let mut buf = vec![];
+            sout.read_to_end(&mut buf).map_err(|x| x.to_string())?;
+            stdout += String::from_utf8(buf).map_err(|x| x.to_string())?.as_str();
+        } else {
+            stdout += "Couldn't get stdout from the process"
+        }
+
+        stdout += "\n\n";
+        stdout += exit_code_msg(exit_status).as_str();
+
+        Ok(stdout)
+    }
+}

src/main.rs

@@ -3,8 +3,10 @@
 use std::{fs::create_dir_all, net::SocketAddr, process::Stdio};
 
 use web::state::{SharedState, TemplateState};
+use executor::executors_id;
 
 mod web;
+pub mod executor;
 
 fn check() {
     let res = std::process::Command::new("python")
@@ -26,7 +28,9 @@ async fn main() {
     check();
     
     let state = SharedState {
-        template: TemplateState {}
+        template: TemplateState {
+            langs: executors_id()
+        }
     };
     let routes = web::routes(state);
 

src/web/executor.rs

@@ -1,11 +1,8 @@
-use std::{fs::{self, remove_file}, io::Read, process::{Command, Stdio}};
-
-use rand::{distributions::Alphanumeric, Rng};
 use serde::{Serialize, Deserialize};
 
 use warp::{reject::Rejection, reply::{json, with_status, Reply}, Filter, http::StatusCode};
 
-use crate::SharedState;
+use crate::{executor::{executors, executors_id, get_executor, python::PythonExecutor, Executor}, SharedState};
 
 #[derive(Serialize, Deserialize)]
 struct ExecutorData {
@@ -15,49 +12,25 @@ struct ExecutorData {
 
 async fn executor(_state: SharedState, data: ExecutorData) -> Result<Box<dyn Reply>, Rejection> {
     
-    if data.lang != "python" {
+    let lang = data.lang;
+    let execs = executors();
+    let found = get_executor(&lang, &execs);
+    
+    if found.is_none() {
         return Ok(
             Box::new(
                 with_status(
-                    json(&"only python supported".to_string()),
+                    json(&format!("{lang} is not supported")),
                     StatusCode::BAD_REQUEST
                 )
             )
         )
     }
 
-    let name = rand::thread_rng()
-        .sample_iter(&Alphanumeric)
-        .take(64)
-        .map(char::from)
-        .collect::<String>();
-    let path = format!("/tmp/sandy-tmp/{name}");
+    let lang = found.unwrap();
+    let out = lang.exec(data.code).unwrap();
     
-    fs::write(path.clone(), &data.code).unwrap();
-    let mut out = Command::new("python")
-        .arg(path.clone())
-        .stdout(Stdio::piped())
-        .spawn()
-        .unwrap();
-    
-    let exit_status = out.wait().unwrap().code().unwrap();
-
-    let mut buf = vec![];
-    out.stdout.unwrap().read_to_end(&mut buf).unwrap();
-
-    let mut stdout = String::from_utf8(buf).unwrap();
-    stdout += "\n---\n";
-    if exit_status != 0 {
-        stdout += format!("<span style='color:red;font-weight:bolder'>Command exited with code {}</span>", exit_status).as_str();
-    } else {
-        stdout += "Command exited with code 0";
-    }
-
-    let stdout = stdout.replace('\n', "<br>");
-    
-    remove_file(path).unwrap();
-
-    Ok(Box::new(warp::reply::json(&stdout)))
+    Ok(Box::new(warp::reply::json(&out)))
 }
 
 fn executor_f(state: SharedState) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {

src/web/pages.rs

@@ -9,7 +9,7 @@ use super::state::TemplateState;
 #[derive(Template)]
 #[template( path = "index.html" )]
 pub struct Index {
-    pub state: TemplateState
+    state: TemplateState
 }
 
 impl Index {

src/web/state.rs

@@ -6,5 +6,5 @@ pub struct SharedState {
 
 #[derive(Debug, Clone)]
 pub struct TemplateState {
-
+    pub langs: Vec<String>
 }