add config and TOS legal safeguard

Cargo.lock

@@ -401,6 +401,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tokio",
+ "toml",
 ]
 
 [[package]]
@@ -993,6 +994,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb3622f419d1296904700073ea6cc23ad690adbd66f13ea683df73298736f0c1"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -1242,6 +1252,40 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "toml"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e9dd1545e8208b4a5af1aa9bbd0b4cf7e9ea08fabc5d0a5c67fcaafa17433aa3"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e40bb779c5187258fd7aad0eb68cb8706a0a81fa712fbea808ab43c4b8374c4"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
+]
+
 [[package]]
 name = "tower"
 version = "0.4.13"
@@ -1610,6 +1654,15 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
 
+[[package]]
+name = "winnow"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c976aaaa0e1f90dbb21e9587cdaf1d9679a1cde8875c0d6bd83ab96a208352"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "winreg"
 version = "0.52.0"

Cargo.toml

@@ -15,3 +15,4 @@ reqwest = "0.12.3"
 serde = { version = "1.0.197", features = ["derive"] }
 serde_json = "1.0.115"
 tokio = { version = "1.37.0", features = ["full"] }
+toml = "0.8.12"

src/config.rs

@@ -0,0 +1,73 @@
+use std::{env, error::Error, fs, io, path::PathBuf};
+
+use home::home_dir;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum Model {
+    #[serde(rename = "claude-instant-1.2")]
+    Claude12,
+    #[serde(rename = "gpt-3.5-turbo-0125")]
+    GPT35,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Config {
+    pub model: Model,
+    pub tos: bool
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            model: Model::Claude12,
+            tos: false
+        }
+    }
+}
+
+impl Config {
+    pub fn get_path<T: From<String>>() -> T {
+        match env::var("HEY_CONFIG_PATH") {
+            Ok(v) => v,
+            Err(_) => 
+            match home_dir() {
+                Some(home) => home.join(".config/hey").as_os_str().as_encoded_bytes().iter().map(|x| char::from(*x)).collect::<String>(),
+                None => panic!("Cannot detect your home directory!")
+            }
+        }.into()
+    }
+
+    pub fn get_file_name<T: From<String>>() -> T {
+        match env::var("HEY_CONFIG_FILENAME") {
+            Ok(v) => v,
+            Err(_) => "conf.toml".into()
+        }.into()
+    }
+
+    fn ensure_dir_exists() -> io::Result<()> {
+        let path: PathBuf = Self::get_path();
+        if ! path.is_dir() { fs::create_dir_all(path)? }
+        Ok(())
+    }
+
+    pub fn save(self: &Self) -> Result<(), Box<dyn Error>> {
+        let path = Self::get_path::<PathBuf>();
+        Self::ensure_dir_exists()?;
+
+        let file_path = path.join(Self::get_file_name::<String>());
+        fs::write(file_path, toml::to_string_pretty(self)?)?;
+        Ok(())
+    }
+
+    pub fn load() -> Result<Self, Box<dyn Error>> {
+        let path = Self::get_path::<PathBuf>();
+
+        let file_path = path.join(Self::get_file_name::<String>());
+        if ! file_path.is_file() {
+            Ok(Self::default())
+        } else {
+            Ok(toml::from_str(&fs::read_to_string(file_path)?)?)
+        }
+    }
+}

src/main.rs

@@ -1,17 +1,19 @@
-use std::{error::Error, process::exit};
+use std::{error::Error, path::PathBuf, process::exit};
 
 use reqwest::{header::{HeaderMap, HeaderValue}, Client};
 use serde::{Deserialize, Serialize};
 
 use clap::Parser;
+use std::io::{stdout, IsTerminal};
 
-use crate::cache::Cache;
+use crate::{cache::Cache, config::Config};
 
 mod cache;
+mod config;
 
 const GREEN: &str = "\x1b[1;32m";
 const RED:   &str = "\x1b[1;31m";
-const WARN:  &str = "\x1b[1;34m";
+const WARN:  &str = "\x1b[33m";
 const RESET: &str = "\x1b[0m";
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -145,22 +147,46 @@ async fn get_res<'a>(cli: &Client, query: String, vqd: String, cache: &'a mut Ca
 
 #[derive(Debug, Parser)]
 #[command(version, about, long_about = None)]
-#[clap(trailing_var_arg=true)]
 struct Args {
+    #[arg(long, default_value = "false", required = false, help = "If you want to agree to the DuckDuckGo TOS")]
+    pub agree_tos: bool,
     #[arg()]
-    pub query: Vec<String>
+    pub query: Vec<String>,
 }
 
 #[tokio::main]
 async fn main() {
     femme::start();
+    
+    if ! stdout().is_terminal() {
+        eprintln!("{RED}Refusing to run in a non-terminal environment{RESET}");
+        eprintln!("This is done to prevent API scraping.");
+        exit(2)
+    }
 
     let args = Args::parse();
     let query = args.query.join(" ");
 
-    println!("{GREEN}Contacting DuckDuckGo chat AI...{RESET}");
-
     let mut cache = Cache::load().unwrap();
+    let mut config = Config::load().unwrap();
+
+    if args.agree_tos {
+        if ! config.tos {
+            println!("{GREEN}TOS accepted{RESET}");
+        }
+        config.tos = true;
+        config.save().expect("Error saving config");
+    }
+
+    if ! config.tos {
+        eprintln!("{RED}You need to agree to duckduckgo AI chat TOS to continue.{RESET}");
+        eprintln!("{RED}Visit it on this URL: https://duckduckgo.com/?q=duckduckgo+ai+chat&ia=chat{RESET}");
+        eprintln!("Once you read it, pass --agree-tos parameter to agree.");
+        eprintln!("{WARN}Note: if you want to, modify `tos` parameter in {}{RESET}", Config::get_path::<PathBuf>().join(Config::get_file_name::<String>()).display());
+        exit(3);
+    }
+
+    println!("{GREEN}Contacting DuckDuckGo chat AI...{RESET}");
 
     let cli = Client::new();
     simulate_browser_reqs(&cli).await.unwrap();