b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
103 lines
2.7 KiB
JavaScript
Executable file
103 lines
2.7 KiB
JavaScript
Executable file
/* global Promise, Event */
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'use strict';
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/**
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* Helper library to deal with in case of emergency (ICE)
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* Contacts.
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* Those contacts are suppose to be first responders to
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* an emergency. More info:
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* https://wiki.mozilla.org/Gaia/Comms/2.1/Ice_Contacts
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*
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* The information will be stored in a DS for sharing
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* between contacts and dialer.
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* The content will be an array of two contacts ids.
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* This helper will be used for fetching:
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* ICEStore.getContacts().then(function(iceContacts) {
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* ...
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* });
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* and setting the data:
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* ICEStore.setContacts(ids).then(function() {
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* ...
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* });
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*/
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(function(exports) {
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var STORE_NAME = 'ice_contacts';
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var store = null;
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var status = 'not_initialized';
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var FIELD = 'ICE_CONTACTS';
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// Get a reference to the store, or returns it if
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// we already have.
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function init() {
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if (store !== null) {
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return Promise.resolve(store);
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}
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if (!navigator.getDataStores) {
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return Promise.reject('No DS supported');
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}
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if (status === 'initialising') {
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document.addEventListener('ice_ready', function ready() {
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document.removeEventListener('ice_ready', ready);
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if (store === null) {
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return Promise.reject('Error getting store');
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} else {
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return Promise.resolve(store);
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}
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});
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}
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status = 'initialising';
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return new Promise(function(resolve, reject) {
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navigator.getDataStores(STORE_NAME).then(function(stores) {
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if (!stores || stores.length < 0) {
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document.dispatchEvent(new Event('on_ice_ready'));
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return reject('No DS found');
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} else {
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store = stores[0];
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status = 'initialised';
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document.dispatchEvent(new Event('ice_ready'));
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return resolve(store);
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}
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});
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});
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}
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var ICEStore = {
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/**
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* Set the in case of emergency contacts.
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* @param {Array} iceContacts array of contacts id.
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* @returns {Promise}
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*/
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setContacts: function(iceContacts) {
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return init().then(function() {
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return store.put(iceContacts, FIELD).then(function() {
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return Promise.resolve(iceContacts);
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});
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});
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},
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/**
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* Retrieves the in case of emergency contacts
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* @returns {Promise}
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*/
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getContacts: function() {
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return init().then(function() {
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return store.get(FIELD);
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});
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},
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/**
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* Subscribe to changes in the store
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* @param {Function} Callback when a change happens
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*/
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onChange: function(cb) {
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return init().then(function() {
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store.addEventListener('change', function() {
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store.get(FIELD).then(cb);
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});
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});
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}
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};
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exports.ICEStore = ICEStore;
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})(window);
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