const express = require("express");
const router = express.Router();
var driver = require("../../graph_db");
const { strictInput } = require('../../middleware/strict_input');

async function create_friendship(req, res) {
  try {
    const me = req.query.me;
    const them = req.query.them;
    if (String(req.user.id) !== String(me)) {
      return res.status(403).send("You can only create relationships as yourself");
    }
    const { records } = await driver.executeQuery(
      "MATCH (m:Person {db_id: $me}) MATCH (t:Person {db_id: $them}) CREATE (m)-[:FRIENDS_WITH]-> (t) CREATE (t)-[:FRIENDS_WITH]-> (m)",
      { me: me, them: them },
      { database: process.env.GRAPH_DB_NAME },
    );
    res.status(200).send("Relationship has been created");
  } catch (err) {
    console.error("database query failed", {
      message: err.message,
      code: err.code,
      detail: err.detail,
      hint: err.hint,
      stack: err.stack,
    });
    res.status(500).send("Relationship was not created, request failed");
  }
}

router.post("/", strictInput({ query: ['me', 'them'] }), create_friendship);
module.exports = router;