111 lines
3.0 KiB
JavaScript
111 lines
3.0 KiB
JavaScript
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// Imports
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const User = require('./models/user.js');
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// Check for tracking clients
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function checkForUsers(io, user) {
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console.log(`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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//TODO: Use Object.values() after upgrading to node v7
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if (Object.keys(io.sockets.connected).map( function(id){
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return io.sockets.connected[id];
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}).some( function(socket){
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return socket.gets==user;
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})) {
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console.log(`Activating updates for ${user}.`);
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io.to(user).emit('activate','true');
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} else {
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console.log(`Deactivating updates for ${user}.`);
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io.to(user).emit('activate', 'false');
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}
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}
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module.exports = {
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checkForUsers: checkForUsers,
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init: function(io){
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io.on('connection', function(socket) {
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console.log(`${socket.id} connected.`);
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// This socket can set location (app)
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socket.on('can-set', function(userId){
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console.log(`${socket.id} can set updates for ${userId}.`);
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socket.join(userId, function(){
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console.log(`${socket.id} joined ${userId}`);
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});
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checkForUsers( io, userId );
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});
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// This socket can receive location (map)
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socket.on('can-get', function(userId){
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socket.gets = userId;
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console.log(`${socket.id} can get updates for ${userId}.`);
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socket.join(userId, function(){
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console.log(`${socket.id} joined ${userId}`);
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socket.to(userId).emit('activate', 'true');
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});
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});
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// Set location
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socket.on('set', function(loc){
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//console.log(`${socket.id} set location for ${loc.usr}`);
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loc.time = Date.now();
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// Check for sk32 token
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if (!loc.tok) { console.log('!loc.tok for loc:',loc) }
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else {
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// Get loc.usr
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User.findById(loc.usr, function(err, user) {
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if (err) { console.log('Error finding user:',err); }
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if (!user) { console.log('User not found for loc:',loc); }
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else {
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// Confirm sk32 token
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if (loc.tok!=user.sk32) { console.log('loc.tok!=user.sk32 || ',loc.tok,'!=',user.sk32); }
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else {
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// Broadcast location
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io.to(loc.usr).emit('get', loc);
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//console.log(`Broadcasting ${loc.lat}, ${loc.lon} to ${loc.usr}`);
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// Save in db as last seen
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user.last = {
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lat: parseFloat(loc.lat),
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lon: parseFloat(loc.lon),
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dir: parseFloat(loc.dir||0),
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spd: parseFloat(loc.spd||0),
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time: loc.time
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};
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user.save(function(err) {
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if (err) { console.log('Error saving user last location:'+loc.user+'\n'+err); }
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});
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}
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}
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});
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}
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});
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// Shutdown (check for remaining clients)
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socket.on('disconnect', function(reason){
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console.log(`${socket.id} disconnected because of a ${reason}.`);
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// Check if client was receiving updates
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if (socket.gets){
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console.log(`${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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// Log errors
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socket.on('error', function(err){
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console.log('Socket error! ',err);
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});
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});
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}
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};
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