didn't know you can just put auto

commands/translate.js

@@ -7,17 +7,15 @@ const command = {
     if (!splitted[2] || !splitted[3]) {
       await client.say(
         msg.channelName,
-        `${msg.displayName}, needed <source country code> <target country code> <text to be translated>`
+        `${msg.displayName}, needed <target country code> <text to be translated>`
       );
       return;
     }
 
     const data = await fetch(
-      `https://lingva.ml/api/v1/${encodeURIComponent(
+      `https://lingva.ml/api/v1/auto/${encodeURIComponent(
         splitted[2]
-      )}/${encodeURIComponent(splitted[3])}/${encodeURIComponent(
-        splitted.slice(4).join(" ")
-      )}`
+      )}/${encodeURIComponent(splitted.slice(3).join(" "))}`
     )
       .then((res) => res.json())
       .catch((err) => console.error("Error with translating: " + err.message));
@@ -34,8 +32,8 @@ const command = {
     await client.say(
       msg.channelName,
       `${msg.displayName}, Translation of ${splitted
-        .slice(4)
-        .join(" ")} to lang ${splitted[3]}: '${data.translation}'`
+        .slice(3)
+        .join(" ")} to lang ${splitted[2]}: '${data.translation}'`
     );
   },
 };