CS307-Team24/functions/handlers/post.js

/* eslint-disable prefer-arrow-callback */
/* eslint-disable promise/always-return */
const admin = require('firebase-admin');

exports.putPost = (req, res) => {
    const newPost = {
        body: req.body.body,
        userHandle: req.user.handle,
        userImage: req.body.userImage,
        userID: req.user.uid,
        microBlogTitle: req.body.microBlogTitle,
        createdAt: new Date().toISOString(),
        likeCount: 0,
        commentCount: 0,
        microBlogTopics: req.body.microBlogTopics
    };

    admin.firestore().collection('posts').add(newPost)
    .then((doc) => {
        doc.update({postId: doc.id})
        const resPost = newPost;
        resPost.postId = doc.id;
        return res.status(200).json(resPost);
    })
    .catch((err) => {
        console.error(err);
        return res.status(500).json({ error: 'something went wrong'});
    });
};

exports.getallPostsforUser = (req, res) => {
    var post_query = admin.firestore().collection("posts").where("userHandle", "==", req.user.handle);
    post_query.get()
    .then(function(myPosts) {
        let posts = [];
        myPosts.forEach(function(doc) {
            posts.push(doc.data());
        });
        return res.status(200).json(posts);
    })
    .then(function() {
    res.status(200).send("Successfully retrieved all user's posts from database.");
    return;
    })
    .catch(function(err) {
    res.status(500).send("Failed to retrieve user's posts from database.", err);
    });
};

exports.getallPosts = (req, res) => {
    var post_query = admin.firestore().collection("posts");
    post_query.get()
    .then(function(allPosts) {
        let posts = [];
        allPosts.forEach(function(doc) {
            posts.push(doc.data());
        });
        return res.status(200).json(posts);
    })
    .then(function() {
    res.status(200).send("Successfully retrieved every post from database.");
    return;
    })
    .catch(function(err) {
    res.status(500).send("Failed to retrieve posts from database.", err);
    });
};

exports.getFilteredPosts = (req, res) => {
    admin.firestore().collection('posts').where('userHandle', '==', 'new user').where('microBlogTopics', '==')
};

exports.getFilteredPostsOnTopics = (req, res) => {
    
    // get topics that user follows
    // make a set storing all topics
    // for each post, make a set of topics and if A and B != 0, you can display post
    var queryTopics = admin.firestore().collection('users').where('userHandle', '==', req.userHandle)
    var topics = new Set();
    topics.add(queryTopics.get().microBlogTopics)
    
    //console.log(topics);
    
    var queryPosts = admin.firestore().collection('posts').where('microBlogTopics','==', topics);
    
    console.log(queryPosts);
    
    queryPosts.get()
    .then(function(Posts) {
        let posts = [];
        Posts.forEach(function(doc){
            posts.push(doc.data());
        });
        return res.status(200).json(posts);
    })
    .then(function() {
        res.status(200).send("Successfully retrieved filtered posts from database.");
        return;
    })
    .catch(function(err) {
        res.status(500).send("Failed to retrieve posts from database.", err);
    });
}