implement flagNsfwByAttachments method

packages/server/src/controllers/PostsController/methods/flagNsfwByAttachments.js

@@ -0,0 +1,48 @@
+import { Post } from "../../../models"
+import indecentPrediction from "../../../utils/indecent-prediction"
+import isNSFW from "../../../utils/is-nsfw"
+
+import modifyPostData from "./modifyPostData"
+
+export default async (post_id) => {
+    if (!post_id) {
+        throw new Error("Post ID is required")
+    }
+
+    let post = await Post.findById(post_id)
+
+    if (!post) {
+        throw new Error("Post not found")
+    }
+
+    let flags = []
+
+    // run indecentPrediction to all attachments
+    if (Array.isArray(post.attachments) && post.attachments.length > 0) {
+        for await (const attachment of post.attachments) {
+            const prediction = await indecentPrediction({
+                url: attachment.url,
+            }).catch((err) => {
+                console.log("Error while checking", attachment, err)
+                return null
+            })
+
+            if (prediction) {
+                const isNsfw = isNSFW(prediction)
+
+                if (isNsfw) {
+                    flags.push("nsfw")
+                }
+            }
+        }
+    }
+
+    // if is there new flags update post
+    if (post.flags !== flags) {
+        await modifyPostData(post_id, {
+            flags: flags,
+        })
+    }
+
+    return flags
+}