instagram: add downloading of single image

merge pull request #180 from dumbmoron/instagram-single-image

src/modules/processing/matchActionDecider.js

@@ -18,6 +18,7 @@ export default function(r, host, audioFormat, isAudioOnly, lang, isAudioMuted) {
     if (isAudioOnly && !r.picker) action = "audio";
     if (r.picker) action = "picker";
     if (isAudioMuted) action = "muteVideo";
+    if (r.isPhoto) action = "photo";
 
     if (action === "picker" || action === "audio") {
         defaultParams.filename = r.audioFilename;
@@ -26,6 +27,9 @@ export default function(r, host, audioFormat, isAudioOnly, lang, isAudioMuted) {
     }
 
     switch (action) {
+        case "photo":
+            responseType = 1;
+            break;
         case "video":
             switch (host) {
                 case "bilibili":

src/modules/processing/services/instagram.js

@@ -71,6 +71,11 @@ export default async function(obj) {
         })
     } else if (data?.shortcode_media?.video_url) {
         single = data.shortcode_media.video_url
+    } else if (data?.shortcode_media?.display_url) {
+        return {
+            urls: data?.shortcode_media?.display_url,
+            isPhoto: true
+        }
     } else {
         return { error: 'ErrorEmptyDownload' }
     }

src/test/tests.json

@@ -850,6 +850,14 @@
         }
     }],
     "instagram": [{
+        "name": "single photo post",
+        "url": "https://www.instagram.com/p/CwIgW8Yu5-I/",
+        "params": {},
+        "expected": {
+            "code": 200,
+            "status": "redirect"
+        }
+    }, {
         "name": "various picker (photos + video)",
         "url": "https://www.instagram.com/p/CvYrSgnsKjv/",
         "params": {},