var mongoose = require("mongoose");
var User = require("../models/user");
var System = require("../models/system");
const Mailjet = require('node-mailjet');

var admin_email = process.env['REACT_APP_ADMIN_EMAIL'] != null ? process.env['REACT_APP_ADMIN_EMAIL'] : "luke@openmhz.com";
var admin_server = process.env['REACT_APP_ADMIN_SERVER'] != null ? process.env['REACT_APP_ADMIN_SERVER'] : "https://admin.openmhz.com";
var site_name = process.env['REACT_APP_SITE_NAME'] != null ? process.env['REACT_APP_SITE_NAME'] : "OpenMHz";

const mailjet = new Mailjet({
  apiKey: process.env['MAILJET_KEY'],
  apiSecret: process.env['MAILJET_SECRET']
});

exports.contact_system = async function(req, res) {
  var system = await System.findOne({
    shortName: req.params.shortName.toLowerCase()
  }).catch(err => {
    res.status(500);
    res.json({
      success: false,
      message: err
    });
    return;
  });
  if (!system) {
    console.error("[contact_system] The Short Name does not exist: " + req.params.shortName.toLowerCase());
    res.status(500);
    res.json({
      success: false,
      message: "That Short Name does not exist."
    });
    return;
  }
  if (!system.allowContact) {
    console.error("[contact_system] This System does not allow user to contact the owner: " + req.params.shortName.toLowerCase());
    res.status(500);
    res.json({
      success: false,
      message: "This System does not allow user to contact the owner."
    });
    return;
  }
  const user = await User.findById(system.userId).exec();
  if (!user) {
    console.error("[contact_system] System User does not exist: " + req.params.shortName.toLowerCase());
    res.status(500);
    res.json({
      success: false,
      message: "System User does not exist."
    });
    return;
  }

  console.log(user);
  let message = "Thank you for contributing a feed to OpenMHz. A user has sent in a message about this feed:\n\n-------------------------------\n"
  message = message + "User Name: " + req.body.name + "\n";
  message = message + "User Email: " + req.body.email + "\n-------------------------------\n";
  message = message + "Message:\n" + req.body.message +  "\n-------------------------------\n\n";
  message = message + "If you wish to stop receiving User Messages for this System:\n - goto the Admin for " + site_name + ": " + admin_server + "\n - find this System\n - Update it and turn off this Allow Contact option."
  const request = mailjet.post("send", {
    version: "v3.1"
  }).request({
    Messages: [{
      From: {
        Email: admin_email,
        Name: site_name + " Admin"
      },
      To: [{
        Email: user.email,
        Name: user.firstName + " " + user.lastName
      },{
        Email: admin_email,
        Name: site_name + " Admin"
      }],
      Subject: site_name + " - " + system.shortName + " - " + " User Comment",
      TextPart: message
     }]
  });
  request.then(result => {
      console.log(`User Comment sent to: ${user.email} for shortName: ${system.shortName}`)
      res.json({
        success: true
      });
    })
    .catch(err => {
      console.error(err.statusCode);
      console.error(err);
      res.status(500);
      res.json({
        success: false,
        message: "Failed to send"
      });
      return;
    });


}

exports.get_systems = async function (req, res) {
  let fromDate = new Date(Date.now() - 60 * 60 * 24 * 30 * 1000);
  //const results = await System.find({lastActive: {$gte: fromDate}}).populate('userId', "screenName").catch( err => {
  //const results = await System.find({active: true}).populate('userId', "screenName").catch( err => {
  const results = await System.find({active: true}).catch( err => {
     console.error("Error - get_systems: " + err.message);
     res.status(500);
      res.json({
        success: false,
        message: err
      });
      return;
  });
    var systemList = [];
    for (var result in results) {

      var clientCount = 0;
      if (req.systemClients.hasOwnProperty(results[result].shortName)) {
        clientCount = req.systemClients[results[result].shortName];
      }
      var system = {
        name: results[result].name,
        shortName: results[result].shortName,
        systemType: results[result].systemType,
        county: results[result].county,
        country: results[result].country,
        city: results[result].city,
        state: results[result].state,
        active: results[result].active,
        lastActive: results[result].lastActive,
        callAvg: results[result].callAvg,
        description: results[result].description,
        status: results[result].status,
        allowContact: results[result].allowContact,
        clientCount: clientCount
      }
      /*
      if (results[result].showScreenName && results[result].userId) {
        system.screenName = results[result].userId.screenName
      } else {
        system.screenName = null;
      }*/
      system.screenName = null;
      systemList.push(system);
    }
    res.contentType('json');
    res.send(JSON.stringify({
      success: true,
      systems: systemList
    }));
  }

  exports.authorize_system = async function (req, res) {

    var shortName = req.params.shortName.toLowerCase();
    var apiKey = req.body.api_key;
    let item = null;
  
    try {
      item = await System.findOne({ 'shortName': shortName }, ["key"]);
    } catch (err) {
      console.warn("[" + req.params.shortName + "] Error /:shortName/authorize - Error: " + err);
      res.status(500);
      res.send("Invalid System Name\n");
      return;
    }
  
    if (!item) {
      console.info("[" + req.params.shortName + "] Error /:shortName/authorize ShortName does not exist");
      res.status(500);
      res.send("Invalid System Name\n");
      return;
    }

    if (apiKey != item.key) {
      console.warn("[" + req.params.shortName + "] Error /:shortName/authorize API Key Mismatch - Provided key: " + apiKey);
      res.status(403);
      res.send("Invalid API Key\n");
      return;
    } else {
      // System shortName exists and the API Key is valid.
      res.status(200).end();
    }

  }