133 lines
4.2 KiB
JavaScript
133 lines
4.2 KiB
JavaScript
'use strict';
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var Devices = module.exports;
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Devices.add = function (store, servername, newDevice) {
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if (!store._devices) { store._devices = {}; }
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if (!store._domains) { store._domains = {}; }
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if (!store._domains[servername]) {
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store._domains[servername] = [];
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}
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var devices = store._domains[servername];
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devices.push(newDevice);
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// TODO only use a device id
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var devId = newDevice.id || servername;
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if (!store._devices[devId]) {
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store._devices[devId] = newDevice;
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if (!store._devices[devId].domains) {
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store._devices[devId].domains = {};
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}
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if (!store._devices[devId].domains[servername]) {
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store._devices[devId].domains[servername] = true;
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}
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}
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};
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Devices.alias = function (store, servername, alias) {
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if (!store._domains[servername]) {
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store._domains[servername] = [];
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}
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if (!store._domains[servername]._primary) {
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store._domains[servername]._primary = servername;
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}
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if (!store._domains[servername].aliases) {
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store._domains[servername].aliases = {};
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}
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store._domains[alias] = store._domains[servername];
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store._domains[servername].aliases[alias] = true;
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};
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Devices.remove = function (store, servername, device) {
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// Check if this domain has an active device
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var devices = store._domains[servername] || [];
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var index = devices.indexOf(device);
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if (index < 0) {
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console.warn('attempted to remove non-present device', device.deviceId, 'from', servername);
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return null;
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}
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// unlink this domain from this device
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var domains = store._devices[devices[index].id || servername].domains;
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delete domains[servername];
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/*
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// remove device if no domains remain
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// nevermind, a device can hang around in limbo for a bit
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if (!Object.keys(domains).length) {
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delete store._devices[devices[index].id || servername];
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}
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*/
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// unlink this device from this domain
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return devices.splice(index, 1)[0];
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};
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Devices.close = function (store, device) {
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var dev = store._devices[device.id];
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var id = device.id;
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// because we're actually using names rather than don't have reliable deviceIds yet
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if (!dev) {
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Object.keys(store._devices[device.id]).some(function (key) {
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if (store._devices[key].socketId === device.socketId) {
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id = key;
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delete store._devices[key];
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return true;
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}
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});
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}
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// TODO double check that all domains are removed
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if (id) { delete store._devices[id]; }
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};
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Devices.list = function (store, servername) {
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// efficient lookup first
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if (store._domains[servername] && store._domains[servername].length) {
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return store._domains[servername]._primary && store._domains[store._domains[servername]._primary] || store._domains[servername];
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}
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// There wasn't an exact match so check any of the wildcard domains, sorted longest
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// first so the one with the biggest natural match with be found first.
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var deviceList = [];
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Object.keys(store._domains).filter(function (pattern) {
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return pattern[0] === '*' && store._domains[pattern].length;
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}).sort(function (a, b) {
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return b.length - a.length;
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}).some(function (pattern) {
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// '.example.com' = '*.example.com'.split(1)
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var subPiece = pattern.slice(1);
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// '.com' = 'sub.example.com'.slice(-4)
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// '.example.com' = 'sub.example.com'.slice(-12)
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if (subPiece === servername.slice(-subPiece.length)) {
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console.log('[Devices.list] "'+servername+'" matches "'+pattern+'"');
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deviceList = store._domains[pattern];
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// Devices.alias(store, '*.example.com', 'sub.example.com'
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// '*.example.com' retrieves a reference to 'example.com'
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// and this reference then also referenced by 'sub.example.com'
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// Hence this O(n) check is replaced with the O(1) check above
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Devices.alias(store, pattern, servername);
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return true;
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}
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});
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return deviceList;
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};
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/*
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Devices.active = function (store, id) {
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var dev = store._devices[id];
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return !!dev;
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};
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*/
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Devices.exist = function (store, servername) {
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return !!(Devices.list(store, servername).length);
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};
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Devices.next = function (store, servername) {
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var devices = Devices.list(store, servername);
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var device;
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if (devices._index >= devices.length) {
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devices._index = 0;
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}
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device = devices[devices._index || 0];
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devices._index = (devices._index || 0) + 1;
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return device;
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};
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