feat: snapchat support

src/modules/processing/match.js

@@ -25,6 +25,7 @@ import streamable from "./services/streamable.js";
 import twitch from "./services/twitch.js";
 import rutube from "./services/rutube.js";
 import dailymotion from "./services/dailymotion.js";
+import snapchat from "./services/snapchat.js";
 
 export default async function(host, patternMatch, url, lang, obj) {
     assert(url instanceof URL);
@@ -158,6 +159,15 @@ export default async function(host, patternMatch, url, lang, obj) {
             case "dailymotion":
                 r = await dailymotion(patternMatch);
                 break;
+            case "snapchat":
+                r = await snapchat({
+                    url,
+                    username: patternMatch.username,
+                    storyId: patternMatch.storyId,
+                    spotlightId: patternMatch.spotlightId,
+                    shortLink: patternMatch.shortLink || false
+                });
+                break;
             default:
                 return apiJSON(0, { t: errorUnsupported(lang) });
         }

src/modules/processing/matchActionDecider.js

@@ -120,6 +120,7 @@ export default function(r, host, userFormat, isAudioOnly, lang, isAudioMuted, di
                 case "tumblr":
                 case "pinterest":
                 case "streamable":
+                case "snapchat":
                     responseType = 1;
                     break;
             }

src/modules/processing/services/snapchat.js

@@ -0,0 +1,56 @@
+import { genericUserAgent } from "../../config.js";
+
+const SPOTLIGHT_VIDEO_REGEX = /<link data-react-helmet="true" rel="preload" href="(https:\/\/cf-st\.sc-cdn\.net\/d\/[\w.?=]+&amp;uc=46)" as="video"\/>/;
+
+export default async function(obj) {
+    let link;
+    if (obj.url.hostname === 't.snapchat.com' && obj.shortLink) {
+        link = await fetch(`https://t.snapchat.com/${obj.shortLink}`, { redirect: "manual" }).then((r) => {
+            if (r.status === 303 && r.headers.get("location").startsWith("https://www.snapchat.com/")) {
+                return r.headers.get("location").split('?', 1)[0]
+            }
+        }).catch(() => {});
+    }
+
+    if (!link && obj.username && obj.storyId) {
+        link = `https://www.snapchat.com/add/${obj.username}/${obj.storyId}`
+    } else if (!link && obj.spotlightId) {
+        link = `https://www.snapchat.com/spotlight/${obj.spotlightId}`
+    } else if (link?.startsWith('https://www.snapchat.com/download')) {
+        return { error: 'ErrorCouldntFetch' };
+    }
+
+    const path = new URL(link).pathname;
+
+    if (path.startsWith('/spotlight/')) {
+        const html = await fetch(link, {
+            headers: { "user-agent": genericUserAgent }
+        }).then((r) => { return r.text() }).catch(() => { return false });
+        if (!html) return { error: 'ErrorCouldntFetch' };
+
+        const id = path.split('/')[2];
+        const videoURL = html.match(SPOTLIGHT_VIDEO_REGEX)?.[1];
+        if (videoURL) return {
+            urls: videoURL,
+            filename: `snapchat_${id}.mp4`,
+            audioFilename: `snapchat_${id}_audio`
+        }
+    } else if (path.startsWith('/add/')) {
+        const html = await fetch(link, {
+            headers: { "user-agent": genericUserAgent }
+        }).then((r) => { return r.text() }).catch(() => { return false });
+        if (!html) return { error: 'ErrorCouldntFetch' };
+
+        const id = path.split('/')[3];
+        const storyVideoRegex = new RegExp(`"snapId":{"value":"${id}"},"snapMediaType":1,"snapUrls":{"mediaUrl":"(https:\\/\\/bolt-gcdn\\.sc-cdn\\.net\\/3\/[^"]+)","mediaPreviewUrl"`);
+        const videoURL = html.match(storyVideoRegex)?.[1];
+        if (videoURL) return {
+            urls: videoURL,
+            filename: `snapchat_${id}.mp4`,
+            audioFilename: `snapchat_${id}_audio`
+        }
+    }
+
+
+    return { error: 'ErrorCouldntFetch' };
+}

src/modules/processing/servicesConfig.json

@@ -116,6 +116,12 @@
             "alias": "dailymotion videos",
             "patterns": ["video/:id"],
             "enabled": true
+        },
+        "snapchat": {
+            "alias": "snapchat stories & spotlights",
+            "subdomains": ["t", "story"],
+            "patterns": [":shortLink", "spotlight/:spotlightId", "add/:username/:storyId", "u/:username/:storyId"],
+            "enabled": true
         }
     }
 }

src/modules/processing/servicesPatternTesters.js

@@ -25,6 +25,11 @@ export const testers = {
         (patternMatch.author?.length <= 255 && patternMatch.song?.length <= 255) 
         || patternMatch.shortLink?.length <= 32,
 
+    "snapchat": (patternMatch) =>
+        (patternMatch.username?.length <= 32 && patternMatch.storyId?.length <= 255) 
+        || patternMatch.spotlightId?.length <= 255 
+        || patternMatch.shortLink?.length <= 16,
+
     "streamable": (patternMatch) =>
         patternMatch.id?.length === 6,
     

src/test/tests.json

@@ -1115,5 +1115,22 @@
             "code": 200,
             "status": "stream"
         }
+    }],
+    "snapchat": [{
+        "name": "spotlight",
+        "url": "https://www.snapchat.com/spotlight/W7_EDlXWTBiXAEEniNoMPwAAYdWxucG9pZmNqAY46j0a5AY46j0YbAAAAAQ",
+        "params": {},
+        "expected": {
+            "code": 200,
+            "status": "redirect"
+        }
+    }, {
+        "name": "shortlinked spotlight",
+        "url": "https://t.snapchat.com/4ZsiBLDi",
+        "params": {},
+        "expected": {
+            "code": 200,
+            "status": "redirect"
+        }
     }]
-}
+}