api: use zod for request schema validation

api/src/processing/request.js

@@ -1,26 +1,7 @@
 import ipaddr from "ipaddr.js";
 
-import { normalizeURL } from "./url.js";
 import { createStream } from "../stream/manage.js";
-import { verifyLanguageCode } from "../misc/utils.js";
-
-const apiRequest = {
-    option: {
-        audioFormat: ["best", "mp3", "ogg", "wav", "opus"],
-        downloadMode: ["auto", "audio", "mute"],
-        filenameStyle: ["classic", "pretty", "basic", "nerdy"],
-        videoQuality: ["max", "4320", "2160", "1440", "1080", "720", "480", "360", "240", "144"],
-        youtubeVideoCodec: ["h264", "av1", "vp9"],
-    },
-    boolean: [
-        "disableMetadata",
-        "tiktokFullAudio",
-        "tiktokH265",
-        "twitterGif",
-        "youtubeDubBrowserLang",
-        "youtubeDubLang"
-    ]
-}
+import { apiSchema } from "./schema.js";
 
 export function createResponse(responseType, responseData) {
     const internalError = (code) => {
@@ -91,49 +72,7 @@ export function createResponse(responseType, responseData) {
 }
 
 export function normalizeRequest(request) {
-    try {
-        let template = {
-            audioFormat: "mp3",
-            url: normalizeURL(decodeURIComponent(request.url)),
-            youtubeVideoCodec: "h264",
-            videoQuality: "720",
-            filenameStyle: "classic",
-            downloadMode: "auto",
-            tiktokFullAudio: false,
-            disableMetadata: false,
-            youtubeDubBrowserLang: false,
-            youtubeDubLang: false,
-            twitterGif: false,
-            tiktokH265: false
-        }
-
-        const requestKeys = Object.keys(request);
-        const templateKeys = Object.keys(template);
-
-        if (requestKeys.length > templateKeys.length + 1 || !request.url) {
-            return false;
-        }
-
-        for (const i in requestKeys) {
-            const key = requestKeys[i];
-            const item = request[key];
-
-            if (String(key) !== "url" && templateKeys.includes(key)) {
-                if (apiRequest.boolean.includes(key)) {
-                    template[key] = !!item;
-                } else if (apiRequest.option[key] && apiRequest.option[key].includes(item)) {
-                    template[key] = String(item)
-                }
-            }
-        }
-
-        if (template.youtubeDubBrowserLang)
-            template.youtubeDubLang = verifyLanguageCode(request.youtubeDubLang);
-
-        return template
-    } catch {
-        return false
-    }
+    return apiSchema.safeParseAsync(request).catch(() => ({ success: false }));
 }
 
 export function getIP(req) {