pull_local_config + init_config_grub_mechanism (50%) + init_unix_listener

crates/api-grub/src/config.rs

@@ -2,13 +2,70 @@
 //  1) check changes in unix-socket  
 //  2) save changes in local config file
 use integr_structs::api::ApiConfig;
-use tokio::net::UnixListener;
+use anyhow::{Error, Ok, Result};
-use anyhow::Result; 
+use log::{info, warn}; 
+use std::{fs, path::Path};
+use serde_json::from_str;
+use tokio::{io::AsyncReadExt, net::UnixListener};
+use std::io;
+use tokio::time::{sleep, Duration};
+use std::result::Result::Ok as stdOk;
+
+// todo! rewrite to use current_exe
+pub async fn pull_local_config() -> Result<ApiConfig> {
+    let conf_path = std::env::current_exe()?;
+    let path = Path::new("config_api.json");
+    // return match conf_path.parent() {
+    //     Some(dir) => {
+    //         let config: ApiConfig = from_str(
+    //             &fs::read_to_string(dir.join("config_api.json"))?
+    //         )?;
+    //         Ok(config)
+    //     },
+    //     None => Err(Error::msg("No local conf was found")) 
+    // }
+    if path.exists() && path.is_file() {
+        let config: ApiConfig = from_str(
+            &fs::read_to_string("config_api.json")?
+        )?;
+        Ok(config)
+    } else {
+        Err(Error::msg("No local conf was found")) 
+    }
+}
 
 // for config pulling
-async fn init_api_grub_mechanism(config: ApiConfig) {
+// ++++ reader to channel 
+async fn init_config_grub_mechanism(config: ApiConfig) -> Result<()> {
+    let server = init_unix_listener().await?;
+    // 
+    info!("Listening Unix-Socket...");
+    let mut buffer = String::new();
+    // 
+    loop {
+        if let stdOk((mut stream, _)) = server.accept().await {
+            if let Err(er) =  stream.read_to_string(&mut buffer).await {
+                warn!("Cannot read config from stream due to {}", er);
+                sleep(Duration::from_millis(500)).await;
+            } else {
+                let config: Result<ApiConfig, serde_json::Error> = from_str(&buffer);
+                if let stdOk(conf) = config {
 
+                } else {
+
+                }
+            }
+        }
+    }
+    // 
+    Ok(())
+}
+async fn save_new_config() -> Result<()> {
+    Ok(())
 }
 
 
-async fn init_unix_listener() {}
+async fn init_unix_listener() -> Result<UnixListener> {
+    fs::remove_file("api-grub.sock")?;
+    Ok(UnixListener::bind("api-grub.sock")?)
+}