const db = require('../surreal');
const router = require('express').Router();

router.post('/', async (req, res) => {
    try{
        const username = req.user;
        const {title, content, category} = req.body;

        if(title.length > process.env.MAXTITLELENGTH) return res.status(400).json({error: "Title is too long"});
        if(content.length > process.env.MAXCONTENTLENGTH) return res.status(400).json({error: "Content is too long"});
        if(!title || !content) return res.status(400).json({error: "Missing title or content"});
        if(title.length < process.env.MINTITLELENGTH) return res.status(400).json({error: "Title is too short"});
        if(content.length < process.env.MINCONTENTLENGTH) return res.status(400).json({error: "Content is too short"});
        if(!username) return res.status(400).json({error: "Missing username"});
        if(!category) return res.status(400).json({error: "Missing category"});

        const currentDate = new Date();
        const formattedDateAndTime = currentDate.toLocaleTimeString('en-gb', { timeStyle: 'short' });
        const formattedDate = currentDate.toLocaleDateString('en-gb');
        const date = formattedDateAndTime + " " + formattedDate;

        const newPost = await db.create('posts', {category: category, title: title, content: content, author: username, date: date, likes: [], comments: [], saves: [], viewcount: 0});
        postId = (newPost[0].id).slice(6);

        const update = await db.query(`UPDATE users SET posts += "${postId}" WHERE username = string::lowercase("${username}")`)

        res.status(200).json({message: "Post created"});
    }
    catch(err){
        console.log(err);
        res.status(500).json({error: "Internal server error"});
    }
});

router.delete('/:id', async (req, res) => {
    try{
        const username = req.user;
        const id = 'posts:' + req.params.id;

        if(!username) return res.status(400).json({error: "Missing username"});
        if(!id) return res.status(400).json({error: "Missing id"});

        const post = await db.query(`SELECT * FROM posts WHERE id = "${id}"`);
        if(post.length == 0) return res.status(400).json({error: "Post does not exist"});
        if(post[0].author != username) return res.status(400).json({error: "You are not the author of this post"});

        const deletePost = await db.query(`DELETE FROM posts WHERE id = "${id}"`);
        const update = await db.query(`UPDATE users SET posts -= "${id}" WHERE username = string::lowercase("${username}")`)

        res.status(200).json({message: "Post deleted"});
    }
    catch(err){
        console.log(err);
        res.status(500).json({error: "Internal server error"});
    }
});

module.exports = router;