现在config.json会自动生成

.gitignore

@@ -1,3 +1,5 @@
 /target
 /.idea
-/我是崩服小能手
+/我是崩服小能手
+config.json
+*.txt

src/configuration.rs

@@ -1,6 +1,8 @@
+use std::fs;
 use std::fs::File;
 use serde::{Deserialize, Serialize};
-use std::io::BufReader;
+use std::io::{BufReader, Write};
+use tokio::io::AsyncWriteExt;
 
 #[derive(Debug, Deserialize, Serialize)]
 pub struct Configuration {
@@ -18,6 +20,7 @@ pub struct Configuration {
     pub use_thread_pool: bool
 }
 
+const DEFAULT_CONFIG: &str = include_str!("default/config.json");
 impl Configuration {
     pub fn new(filename: &str) -> Self {
         let file = File::open(filename);
@@ -40,7 +43,20 @@ impl Configuration {
                 }
             }
             Err(error) => {
-                eprintln!("[MAIN/CONF] Unable to read config file, will use default values: {}", error);
+                eprintln!("[MAIN/CONF] can't read configuration: {}", error);
+                println!("[MAIN/CONF] creating new config.json");
+
+                match File::create("config.json") {
+                    Ok(mut file) => {
+                        if let Err(e) = file.write_all(DEFAULT_CONFIG.as_bytes()) {
+                            eprintln!("[MAIN/CONF] can't write config.json: {}", e);
+                        }
+                    },
+                    Err(e) => {
+                        eprintln!("[MAIN/CONF] can't create config.json: {}", e);
+                    }
+                }
+
                 Self::default()
             }
         }

test.txt

@@ -1,5 +0,0 @@
-我奶猪好燃
-猪好燃的猪
-猪好燃的好
-猪好燃的燃
-没错，我叫猪好燃