Add localforage, basic cache service

app/services/browser-cache.js

@@ -0,0 +1,25 @@
+import Service from '@ember/service';
+import * as localforage from 'localforage';
+
+function createStore(name) {
+  return localforage.createInstance({ name: `kredits:${name}` });
+}
+
+export default class BrowserCacheService extends Service {
+
+  constructor() {
+    super(...arguments);
+    this.stores = {
+      contributors:  createStore('contributors'),
+      contributions: createStore('contributions')
+    }
+  }
+
+  get contributors() {
+    return this.stores.contributors;
+  }
+
+  get contributions() {
+    return this.stores.contributions;
+  }
+}

app/services/kredits.js

@@ -230,7 +230,7 @@ export default Service.extend({
   },
 
   getContributions () {
-    return this.kredits.Contribution.all({page: {size: 200}})
+    return this.kredits.Contribution.all({page: {size: 30}})
       .then(contributions => {
         return contributions.map(contribution => {
           contribution.contributor = this.contributors.findBy('id', contribution.contributorId.toString());

package-lock.json

@@ -15545,6 +15545,12 @@
       "integrity": "sha512-MzbUSahkTW1u7JpKKjY7LCARd1fU5W2rLdxlM4kdkayuCwZImjkpluF9CM1aLewYJguPDqewLam18Y6AU69A8A==",
       "dev": true
     },
+    "immediate": {
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.0.6.tgz",
+      "integrity": "sha1-nbHb0Pr43m++D13V5Wu2BigN5ps=",
+      "dev": true
+    },
     "import-fresh": {
       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.2.1.tgz",
@@ -16768,6 +16774,15 @@
         }
       }
     },
+    "lie": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/lie/-/lie-3.1.1.tgz",
+      "integrity": "sha1-mkNrLMd0bKWd56QfpGmz77dr2H4=",
+      "dev": true,
+      "requires": {
+        "immediate": "~3.0.5"
+      }
+    },
     "linkify-it": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.2.0.tgz",
@@ -16849,6 +16864,15 @@
       "integrity": "sha512-9M2KvGT6duzGMgkOcTkWb+PR/Q2Oe54df/tLgHGVmFpAmtqJ553xJh6N63iFYI2yjo2PeJXbS5skHi/QpJq4vA==",
       "dev": true
     },
+    "localforage": {
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/localforage/-/localforage-1.7.3.tgz",
+      "integrity": "sha512-1TulyYfc4udS7ECSBT2vwJksWbkwwTX8BzeUIiq8Y07Riy7bDAAnxDaPU/tWyOVmQAcWJIEIFP9lPfBGqVoPgQ==",
+      "dev": true,
+      "requires": {
+        "lie": "3.1.1"
+      }
+    },
     "locate-character": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/locate-character/-/locate-character-2.0.5.tgz",

package.json

@@ -67,6 +67,7 @@
     "kosmos-schemas": "^2.1.0",
     "kredits-contracts": "^5.5.0",
     "loader.js": "^4.7.0",
+    "localforage": "^1.7.3",
     "ndjson": "github:hugomrdias/ndjson#feat/readable-stream3",
     "npm-run-all": "^4.1.5",
     "qunit-dom": "^1.2.0",

tests/unit/services/browser-cache-test.js

@@ -0,0 +1,18 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+
+module('Unit | Service | browser-cache', function(hooks) {
+  setupTest(hooks);
+
+  test('it exists', function(assert) {
+    let service = this.owner.lookup('service:browser-cache');
+    assert.ok(service);
+  });
+
+  test('creates kredits data stores', function(assert) {
+    let cache = this.owner.lookup('service:browser-cache');
+    assert.equal(cache.contributors._config.name, "kredits:contributors");
+    assert.equal(cache.contributions._config.name, "kredits:contributions");
+  });
+
+});