api: update error codes in services, add more error codes where needed

api/src/processing/services/vk.js

@@ -1,5 +1,5 @@
-import { genericUserAgent, env } from "../../config.js";
 import { cleanString } from "../../misc/utils.js";
+import { genericUserAgent, env } from "../../config.js";
 
 const resolutions = ["2160", "1440", "1080", "720", "480", "360", "240"];
 
@@ -7,22 +7,35 @@ export default async function(o) {
     let html, url, quality = o.quality === "max" ? 2160 : o.quality;
 
     html = await fetch(`https://vk.com/video${o.userId}_${o.videoId}`, {
-        headers: { "user-agent": genericUserAgent }
-    }).then(r => r.arrayBuffer()).catch(() => {});
+        headers: {
+            "user-agent": genericUserAgent
+        }
+    })
+    .then(r => r.arrayBuffer())
+    .catch(() => {});
 
-    if (!html) return { error: 'ErrorCouldntFetch' };
+    if (!html) return { error: "fetch.fail" };
 
     // decode cyrillic from windows-1251 because vk still uses apis from prehistoric times
     let decoder = new TextDecoder('windows-1251');
     html = decoder.decode(html);
 
-    if (!html.includes(`{"lang":`)) return { error: 'ErrorEmptyDownload' };
+    if (!html.includes(`{"lang":`)) return { error: "fetch.empty" };
 
     let js = JSON.parse('{"lang":' + html.split(`{"lang":`)[1].split(']);')[0]);
 
-    if (Number(js.mvData.is_active_live) !== 0) return { error: 'ErrorLiveVideo' };
-    if (js.mvData.duration > env.durationLimit)
-        return { error: ['ErrorLengthLimit', env.durationLimit / 60] };
+    if (Number(js.mvData.is_active_live) !== 0) {
+        return { error: "content.video.live" };
+    }
+
+    if (js.mvData.duration > env.durationLimit) {
+        return {
+            error: "content.too_long",
+            context: {
+                limit: env.durationLimit / 60
+            }
+        }
+    }
 
     for (let i in resolutions) {
         if (js.player.params[0][`url${resolutions[i]}`]) {
@@ -51,5 +64,5 @@ export default async function(o) {
             extension: "mp4"
         }
     }
-    return { error: 'ErrorEmptyDownload' }
+    return { error: "fetch.empty" }
 }