140 lines
3.8 KiB
JavaScript
140 lines
3.8 KiB
JavaScript
const debug = require('debug')('tracman-sockets')
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const User = require('./models.js').user
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// Check for tracking clients
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function checkForUsers(io, user) {
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debug(`Checking for clients receiving updates for ${user}`);
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// Checks if any sockets are getting updates for this user
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if (Object.values(io.sockets.connected).some( (socket)=>{
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return socket.gets===user;
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})) {
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debug(`Activating updates for ${user}.`);
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io.to(user).emit('activate','true');
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} else {
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debug(`Deactivating updates for ${user}.`);
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io.to(user).emit('activate', 'false');
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}
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}
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module.exports = {
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checkForUsers: checkForUsers,
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init: (io) => {
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debug(`Initiating socketio...`)
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io.on('connection', (socket)=>{
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debug(`${socket.id} connected.`)
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// Set a few variables
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socket.ip = socket.client.request.headers['x-real-ip']
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socket.ua = socket.client.request.headers['user-agent']
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// Log and errors
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//socket.on('log', (text)=>{
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// console.log(`log: ${text}`)
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//})
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socket.on('error', (err) => { console.error('❌', err.stack); } )
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// This socket can set location (app)
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socket.on('can-set', (userId) => {
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debug(`${socket.id} can set updates for ${userId}.`);
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socket.join(userId, ()=>{
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debug(`${socket.id} joined ${userId}`);
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});
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checkForUsers( io, userId );
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});
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// This socket can receive location (map)
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socket.on('can-get', (userId) => {
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debug(`${socket.id} can get updates for ${userId}.`)
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socket.gets = userId
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socket.join(userId, () => {
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debug(`${socket.id} joined ${userId}`)
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socket.to(userId).emit('activate', 'true')
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})
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})
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// Set location
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socket.on('set', (loc) => {
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debug(`${socket.id} set location for ${loc.usr} to: ${JSON.stringify(loc)}`)
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// Get android timestamp or use server timestamp
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if (loc.ts){
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debug(`Using android timestamp of ${loc.ts} for loc`)
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loc.tim = Date(loc.ts)
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} else {
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debug(`Using server time of ${Date.now()} for loc`)
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loc.tim = Date.now()
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}
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// Check for user and sk32 token
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if (!loc.usr){
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console.error("❌", new Error(`Recieved an update from ${socket.ip} without a usr!`).message)
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}
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else if (!loc.tok){
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console.error("❌", new Error(`Recieved an update from ${socket.ip} for usr ${loc.usr} without an sk32!`).message)
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}
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else {
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// Get loc.usr
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debug(`Getting loc.user of ${loc.user}`)
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User.findById(loc.usr)
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.where('sk32').equals(loc.tok)
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.then( (user)=>{
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if (!user){
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console.error("❌", new Error(`Recieved an update from ${socket.ip} for ${loc.usr} with tok of ${loc.tok}, but no such user was found in the db!`).message)
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}
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else {
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// Broadcast location
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debug(`Broadcasting ${loc.lat}, ${loc.lon} to ${loc.usr}`)
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io.to(loc.usr).emit('get', loc)
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// Save in db as last seen
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debug(`Saving user.last for user ${user.id}`)
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user.last = {
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lat: parseFloat(loc.lat),
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lon: parseFloat(loc.lon),
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dir: parseFloat(loc.dir||0),
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spd: parseFloat(loc.spd||0),
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time: loc.tim
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}
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user.save()
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.then( () => {
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debug(`user.last with time of ${loc.tim} successfully saved for user ${user.id}`)
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})
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.catch( (err) => {
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debug(`Failed to save user.last for user ${user.id}`)
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console.error("❌", err.stack)
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})
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}
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})
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.catch( (err) => {
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debug(`Error finding user with id of ${loc.usr}`)
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console.error("❌", err.stack)
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})
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}
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})
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// Shutdown (check for remaining clients)
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socket.on('disconnect', (reason) => {
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debug(`${socket.id} disconnected because of a ${reason}.`)
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// Check if client was receiving updates
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if (socket.gets) {
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debug(`${socket.id} left ${socket.gets}`)
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checkForUsers( io, socket.gets )
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}
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})
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})
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}
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}
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