import {body, param} from "express-validator";
import {getClient} from "../utils/database.js";
import jwt from "jsonwebtoken";


export const Comment = {
    id: param("id").notEmpty().isNumeric().trim(),
    content: body("content").notEmpty().trim(),
    video: body("video").notEmpty().isNumeric().trim(),
}

export const CommentCreate = {
    content: body("content").notEmpty().trim(),
    video: body("video").notEmpty().isNumeric().trim(),
}

export async function doCommentExists(req, res, next) {

    const id = req.params.id;
    const logger = req.body.logger;

    const client = await getClient();
    try {
        const query = `SELECT * FROM comments WHERE id = $1`;
        const result = await client.query(query, [id]);
        if (result.rows.length === 0) {
            logger.write("comment not found", 404);
            res.status(404).json({error: "comment not found"});
            return
        }
        next()
    } finally {
        client.release();
    }
}

export async function isAuthor(req, res, next) {
    const id = req.params.id;
    const token = req.headers.authorization.split(" ")[1];
    const claims = jwt.decode(token);
    const userId = claims.id;
    const logger = req.body.logger;
    const client = await getClient();
    try {
        const query = `SELECT * FROM comments WHERE id = $1`;
        const result = await client.query(query, [id]);
        if (userId !== result.rows[0].author) {
            logger.write("is not author of the comment", 403);
            res.status(403).json({error: "You do not have permission"});
            return
        }
        next()
    } finally {
        client.release();
    }
}