add option to disable file metadata

closes #142

docs/API.md

@@ -26,6 +26,7 @@ Response Body Type: ``application/json``
 | isTTFullAudio   | boolean | ``true / false``                  | ``false`` | Enables download of original sound used in a TikTok video.                     |
 | isAudioMuted    | boolean | ``true / false``                  | ``false`` | Disables audio track in video downloads.                                       |
 | dubLang         | boolean | ``true / false``                  | ``false`` | Backend uses Accept-Language for YouTube video audio tracks when ``true``.     |
+| disableMetadata | boolean | ``true / false``                  | ``false`` | Does not add metadata to the downloaded audio/video                            |
 
 ### Response Body Variables
 | key        | type   | variables                                                     |

src/front/cobalt.js

@@ -18,7 +18,7 @@ const switchers = {
     "vimeoDash": ["false", "true"],
     "audioMode": ["false", "true"]
 };
-const checkboxes = ["disableTikTokWatermark", "fullTikTokAudio", "muteAudio", "reduceTransparency", "disableAnimations"];
+const checkboxes = ["disableTikTokWatermark", "fullTikTokAudio", "muteAudio", "reduceTransparency", "disableAnimations", "disableMetadata"];
 const exceptions = { // used for mobile devices
     "vQuality": "720"
 };
@@ -377,6 +377,8 @@ async function download(url) {
         if ((url.includes("tiktok.com/") || url.includes("douyin.com/")) && sGet("disableTikTokWatermark") === "true") req.isNoTTWatermark = true;
     }
 
+    if (sGet("disableMetadata") === "true") req.disableMetadata = true;
+
     let j = await fetch(`${apiURL}/api/json`, {
         method: "POST",
         body: JSON.stringify(req),

src/localization/languages/en.json

@@ -43,6 +43,7 @@
         "SettingsKeepDownloadButton": "keep >> visible",
         "AccessibilityKeepDownloadButton": "keep the download button always visible",
         "SettingsEnableDownloadPopup": "ask how to save",
+        "SettingsDisableMetadata": "disable file metadata",
         "AccessibilityEnableDownloadPopup": "ask what to do with downloads",
         "SettingsQualityDescription": "if selected quality isn't available, closest one is used instead.",
         "LinkGitHubChanges": ">> see previous commits and contribute on github",

src/localization/languages/ru.json

@@ -43,6 +43,7 @@
         "SettingsKeepDownloadButton": "всегда показывать >>",
         "AccessibilityKeepDownloadButton": "всегда показывать кнопку скачивания на экране",
         "SettingsEnableDownloadPopup": "выбор метода скачивания",
+        "SettingsDisableMetadata": "disable file metadata",
         "AccessibilityEnableDownloadPopup": "спрашивать, что делать с загрузками",
         "SettingsQualityDescription": "если выбранное качество недоступно, то выбирается ближайшее к нему.",
         "LinkGitHubChanges": ">> смотри предыдущие изменения на github",

src/modules/pageRender/page.js

@@ -447,6 +447,10 @@ export default function(obj) {
                         name: t("SettingsEnableDownloadPopup"),
                         padding: "no-margin",
                         aria: t("AccessibilityEnableDownloadPopup")
+                    }, {
+                        action: "disableMetadata",
+                        name: t("SettingsDisableMetadata"),
+                        padding: "no-margin"
                     }])
                 })
             }],

src/modules/processing/match.js

@@ -22,7 +22,7 @@ import streamable from "./services/streamable.js";
 
 export default async function (host, patternMatch, url, lang, obj) {
     try {
-        let r, isAudioOnly = !!obj.isAudioOnly;
+        let r, isAudioOnly = !!obj.isAudioOnly, disableMetadata = !!obj.disableMetadata;
 
         if (!testers[host]) return apiJSON(0, { t: errorUnsupported(lang) });
         if (!(testers[host](patternMatch))) return apiJSON(0, { t: brokenLink(lang, host) });
@@ -131,7 +131,7 @@ export default async function (host, patternMatch, url, lang, obj) {
 
         if (r.error) return apiJSON(0, { t: Array.isArray(r.error) ? loc(lang, r.error[0], r.error[1]) : loc(lang, r.error) });
 
-        return matchActionDecider(r, host, obj.aFormat, isAudioOnly, lang, isAudioMuted);
+        return matchActionDecider(r, host, obj.aFormat, isAudioOnly, lang, isAudioMuted, disableMetadata);
     } catch (e) {
         return apiJSON(0, { t: genericError(lang, host) })
     }

src/modules/processing/matchActionDecider.js

@@ -2,17 +2,17 @@ import { audioIgnore, services, supportedAudio } from "../config.js";
 import { apiJSON } from "../sub/utils.js";
 import loc from "../../localization/manager.js";
 
-export default function(r, host, audioFormat, isAudioOnly, lang, isAudioMuted) {
+export default function(r, host, audioFormat, isAudioOnly, lang, isAudioMuted, disableMetadata) {
     let action,
         responseType = 2,
         defaultParams = {
             u: r.urls,
             service: host,
             filename: r.filename,
-            fileMetadata: r.fileMetadata ? r.fileMetadata : false
+            fileMetadata: !disableMetadata ? r.fileMetadata : false
         },
         params = {}
-    
+
     if (r.isPhoto) action = "photo";
     else if (r.picker) action = "picker"
     else if (isAudioMuted) action = "muteVideo";

src/modules/sub/utils.js

@@ -6,7 +6,7 @@ const apiVar = {
         vQuality: ["max", "4320", "2160", "1440", "1080", "720", "480", "360", "240", "144"],
         aFormat: ["best", "mp3", "ogg", "wav", "opus"]
     },
-    booleanOnly: ["isAudioOnly", "isNoTTWatermark", "isTTFullAudio", "isAudioMuted", "dubLang", "vimeoDash"]
+    booleanOnly: ["isAudioOnly", "isNoTTWatermark", "isTTFullAudio", "isAudioMuted", "dubLang", "vimeoDash", "disableMetadata"]
 }
 const forbiddenChars = ['}', '{', '(', ')', '\\', '%', '>', '<', '^', '*', '!', '~', ';', ':', ',', '`', '[', ']', '#', '$', '"', "'", "@", '=='];
 const forbiddenCharsString = ['}', '{', '%', '>', '<', '^', ';', '`', '$', '"', "@", '='];
@@ -101,13 +101,14 @@ export function checkJSONPost(obj) {
         isNoTTWatermark: false,
         isTTFullAudio: false,
         isAudioMuted: false,
+        disableMetadata: false,
         dubLang: false,
         vimeoDash: false
     }
     try {
         let objKeys = Object.keys(obj);
-        if (!(objKeys.length <= 9 && obj.url)) return false;
         let defKeys = Object.keys(def);
+        if (objKeys.length > defKeys.length + 1 || !obj.url) return false;
 
         for (let i in objKeys) {
             if (String(objKeys[i]) !== "url" && defKeys.includes(objKeys[i])) {