const express = require("express");
const cors = require("cors");
const mongoose = require("mongoose");
const mongoDB = "mongodb://127.0.0.1/chillroom-database";
const deviceSchema = require("./deviceSchema");
const bodyParser = require("body-parser");
const statusSchema = require("./statusSchema");

mongoose.connect(
  mongoDB,
  { useNewUrlParser: true }
);
const app = express();
app.use(cors());
app.options("*", cors());
app.use(bodyParser.json());
const port = 3000;

const save_data = async time => {
  try {
    const devices = await deviceSchema.find({});
    //console.log("DEVICES => " + devices);
    for (const { _id, ip } of devices) {
      const value_data = await getScript(ip);
      const data = JSON.parse(value_data);
      const { lastStatus } = await deviceSchema.findById(_id);

      if (lastStatus != data.Sensors[0].Switch) {
        await statusSchema.findOneAndUpdate(
          { device: _id },
          {
            $push: { status: { value: data.Sensors[0].Switch, time } }
          }
        );
        await deviceSchema.findByIdAndUpdate(_id, {
          lastStatus: data.Sensors[0].Switch
        });
      }
    }
  } catch (error) {
    //console.log("ERROR z CATCHA => " + error);
  }
};

let interval = setInterval(() => {
  save_data(Date.now());
}, 1000);

const getScript = url => {
  return new Promise((resolve, reject) => {
    const http = require("http");

    let client = http;

    url = "http://" + url + "/json";

    //console.log("DATA URL => " + url);

    client
      .get(url, resp => {
        let data = "";

        // Dane zostały pobrane
        resp.on("data", chunk => {
          data += chunk;
        });

        // Cały response pobrany i print
        resp.on("end", () => {
          resolve(data);
          //console.log(data);
        });
      })
      .on("error", err => {
        resolve('{"Sensors": [{ "Switch": 2 }]}');
      });
  });
};

app.get("/chillroom-server", (req, res) => {
  (async url => {
    res.json(await getScript(url));
  })(req.query.ip);
});

app.get("/stop", (req, res) => {
  clearInterval(interval);
  interval = null;
  res.json({ message: "Przestalem dzialac :<" });
});

app.get("/status/:id", async (req, res) => {
  const data = await statusSchema
    .findOne({
      device: mongoose.Types.ObjectId(req.params.id)
    })
    .select("status");
  const status = data.status.sort((a, b) => {
    return b.time - a.time;
  });
  res.json(status);
});

app.get("/start", (req, res) => {
  if (interval === null) {
    interval = setInterval(() => {
      save_data(Date.now());
    }, 15000);

    res.json({ message: "Zaczalem dzialac :>" });
  } else {
    res.json({ message: "Dzialam i nie mozna mnie rozpoczac raz jeszcze :p" });
  }
});

app.get("/all", async (req, res) => {
  const items = await deviceSchema.find({});
  res.json(items);
});

app.post("/device", async (req, res) => {
  //console.log(req.body);
  const newDevice = await deviceSchema.create({
    name: req.body.name,
    ip: req.body.ip
  });
  await statusSchema.create({ device: newDevice });
  res.json({ Sukces: "Dodaje OK" });
});

app.delete("/device/:ip", async (req, res) => {
  //console.log(req.body);
  const newDevice = await deviceSchema.findOneAndRemove({ ip: req.params.ip });
  await statusSchema.findOneAndRemove({ device: newDevice });
  res.json({ Sukces: "Usuwa OK" });
});

app.put("/device/:id", async (req, res) => {
  const newDevice = await deviceSchema.findByIdAndUpdate(
    req.params.id,
    req.body
  );
  res.json(newDevice);
});

app.listen(port, () =>
  console.log(`Chillroom server nasluchuje na porcie ${port}!`)
);