update README, security, and user friendliness

README.md

@@ -24,6 +24,17 @@ An automation tool for Byte Dice. It's both a Discord and Reddit bot in one prog
 * typing
 * websockets
 
+**Environment variables:**
+| **Name** | **Description** |
+| --- | --- |
+| `ASSISTANT_TOKEN` | The Discord bot token. |
+| `ASSISTANT_TOKEN_TEST` | (Optional) A testing Discord bot token. This is only needed when the program is ran with `-t` or `--test`. |
+| `ASSISTANT_DM_USER` | (Optional) Your Discord user id. The assistant will DM this user when *certain* errors occur. |
+| `ASSISTANT_R_ID` | The id for the Reddit bot/account. |
+| `ASSISTANT_R_TOKEN` | The token for the Reddit bot/account. |
+| `ASSISTANT_R_NAME` | The username of the Reddit bot/account. |
+| `ASSISTANT_R_PASS` | The password for the Reddit bot/account. |
+
 You can install Python modules by running `$ pip install {module}` or `$ python -m pip install {module}` in a terminal.
 
 **How to run:**

src/messages.rs

@@ -177,8 +177,10 @@ pub async fn http_edit_msg(
 
 
 pub async fn send_dm(msg: String, args: Args) {
-  let uid = env::var("ASSISTANT_DM_USER").expect("Missing ASSISTANT_DM_USER env var!").parse::<u64>().unwrap();
+  let uid = env::var("ASSISTANT_DM_USER");
-  let user = UserId::new(uid);
+  if uid.is_err() { return; }
+
+  let user = UserId::new(uid.unwrap().parse::<u64>().unwrap());
 
   let token: String;
   if !args.test {

src/python/bot.py

@@ -7,8 +7,15 @@ from macros import *
 
 class Bot:
   args:     dict = {"NO_RUST": True, "dev": True, "py": True, "port": 2920}
-  password: str = os.environ.get("ASSISTANT_R_PASS")
+  r_id:     str = os.environ.get("ASSISTANT_R_ID")
   secret:   str = os.environ.get("ASSISTANT_R_TOKEN")
+  username: str = os.environ.get("ASSISTANT_R_NAME")
+  password: str = os.environ.get("ASSISTANT_R_PASS")
+
+  useragent: str =\
+    f"{username} by u/RandomPersonDotExe aka u/Byte_Dice"\
+      if r_id == "YmZjr4zLr2qtHdpQXtj0sBOOdJzrXQ"\
+    else f"{username} (original program by u/RandomPersonDotExe aka u/Byte_Dice)"
 
   if password is None:
     py_error("Environment variable \"ASSISTANT_R_PASS\" is null!")
@@ -17,11 +24,11 @@ class Bot:
 
   def __init__(self):
     self.r: praw.Reddit = praw.Reddit(
-      client_id="iCSRWS6PMlTLwmylCJRYmA",
+      client_id =     self.r_id,
       client_secret = self.secret,
-      username="ByteDiceAssistant",
+      username =      self.username,
       password =      self.password,
-      user_agent="Byte Dice Assistant by u/RandomPersonDotExe aka u/Byte_Dice"
+      user_agent =    self.useragent
     )
     self.sr = None
     self.data_f: TextIOWrapper = None