EMI-Backend/dbTools/post.js

const DBName = "EMI_SOCIAL";
const Post = require("./../def/post.js")

postDB = (DB)=>{
    DB.postCols = DB.db.db(DBName).collection("posts");
    DB.newPost = (postObj) => {
        console.log(postObj)
        return DB.postCols.insertOne(postObj.toObj()).catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.newReaction = (postid, userid, reaction) => {
        const id = DB.ObjectID(postid);
        let update = {
            $set:{
                ["reactions." + userid]: reaction,
                lastUpdated: new Date()
            }            
        }
        return DB.postCols.updateOne({_id: id}, update).catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.removeReaction = (postid, userid) => {
        const id = DB.ObjectID(postid);
        let update = {
            $unset:{
                reactions:{
                    [userid]: {}
                }
            },
            $set: {
                lastUpdated: new Date()
            }            
        }
        return DB.postCols.updateOne({_id: id}, update).catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.newComment = (postid, comment) => {
        const id = DB.ObjectID(postid);
        return DB.postCols.updateOne({_id: id}, {
            $push: {
                comments: comment
            },
            $set: {
                lastUpdated: new Date()
            }
        }).catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.newCommentReaction = (postid, commentDate, userid, reaction) => {
        const id = DB.ObjectID(postid);
        let update = {
            $set:{
                ["comments.$.reactions." + userid]: reaction,
                "comments.$.lastUpdated": new Date(),
                lastUpdated: new Date()
            }            
        }
        console.log(JSON.stringify(update));
        return DB.postCols.updateOne({
            _id: id,
            "comments.createdAt": commentDate
        }, update).catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.getPosts = (userObj) => {
        return DB.postCols.find().sort({_id: -1}).toArray().catch((err)=>{
            console.log(err);
            return false;
        });
    }

    DB.getPostsOfUser = (userId) => {
        let userid = DB.ObjectID(userId);
        return DB.postCols.find({userid}).sort({_id: -1}).toArray().catch((err)=>{
            console.log(err);
            return false;
        });
    }
}

module.exports = postDB;