implement fullfillPostsData

packages/server/src/utils/fullfillPostsData/index.js

@@ -0,0 +1,60 @@
+import { User, Comment, SavedPost } from "../../models"
+
+export default async (payload) => {
+    let {
+        posts,
+        for_user_id,
+        skip = 0,
+    } = payload
+
+    if (!Array.isArray(posts)) {
+        posts = [posts]
+    }
+
+    let savedPostsIds = []
+
+    if (for_user_id) {
+        const savedPosts = await SavedPost.find({ user_id: for_user_id })
+            .sort({ saved_at: -1 })
+
+        savedPostsIds = savedPosts.map((savedPost) => savedPost.post_id)
+    }
+
+    posts = posts.map(async (post, index) => {
+        post = post.toObject()
+
+        let user = await User.findById(post.user_id).catch(() => false)
+
+        if (!user) {
+            user = {
+                username: "Deleted user",
+            }
+        }
+
+        let comments = await Comment.find({ parent_id: post._id.toString() })
+            .select("_id")
+            .catch(() => false)
+
+        if (!comments) {
+            comments = []
+        }
+
+        post.comments = comments
+
+        if (for_user_id) {
+            post.isLiked = post.likes.includes(for_user_id)
+            post.isSaved = savedPostsIds.includes(post._id.toString())
+        }
+
+        return {
+            key: Number(skip) + Number(index),
+            ...post,
+            comments: comments.map((comment) => comment._id.toString()),
+            user,
+        }
+    })
+
+    posts = await Promise.all(posts)
+
+    return posts
+}