From 5f108557cc4fcc81126e225b3aa40901d3f41b77 Mon Sep 17 00:00:00 2001
From: Sebastian Kippe <sebastian@kip.pe>
Date: Thu, 2 Feb 2017 17:27:50 +0800
Subject: [PATCH] Add Web3 library and service

---
 app/controllers/index.js            |  7 ++++-
 app/services/kredits.js             | 40 +++++++++++++++++++++++++++++
 app/templates/index.hbs             |  2 +-
 package.json                        |  4 ++-
 tests/unit/services/kredits-test.js | 12 +++++++++
 5 files changed, 62 insertions(+), 3 deletions(-)
 create mode 100644 app/services/kredits.js
 create mode 100644 tests/unit/services/kredits-test.js

diff --git a/app/controllers/index.js b/app/controllers/index.js
index fddb970..574b4c6 100644
--- a/app/controllers/index.js
+++ b/app/controllers/index.js
@@ -1,11 +1,16 @@
 import Ember from 'ember';
 
 const {
-  computed
+  computed,
+  inject: {
+    service
+  }
 } = Ember;
 
 export default Ember.Controller.extend({
 
+  kredits: service(),
+
   contributorsCount: computed('model.contributors.[]', function() {
     return this.get('model.contributors').length;
   }),
diff --git a/app/services/kredits.js b/app/services/kredits.js
new file mode 100644
index 0000000..dbf8c42
--- /dev/null
+++ b/app/services/kredits.js
@@ -0,0 +1,40 @@
+import Ember from 'ember';
+import Web3 from 'npm:web3';
+
+export default Ember.Service.extend({
+
+  web3Instance: null,
+
+  web3: function() {
+    if (Ember.isPresent(this.get('web3Instance'))) {
+      return this.get('web3Instance');
+    }
+
+    let web3Instance;
+
+    if (typeof window.web3 !== 'undefined') {
+      Ember.Logger.debug('[web3] Using user-provided instance, e.g. from Mist browser or Metamask');
+      web3Instance = window.web3;
+    } else {
+      Ember.Logger.debug('[web3] Creating new instance from npm module class');
+      let provider = new Web3.providers.HttpProvider("http://localhost:8545");
+      web3Instance = new Web3(provider);
+    }
+
+    this.set('web3Instance', web3Instance);
+
+    return web3Instance;
+  }.property('web3Instance'),
+
+  contract: function() {
+    // let web3 = this.get('web3');
+    let contract = null;
+
+    return contract;
+  }.property('web3'),
+
+  totalSupply: function() {
+    return 23000;
+  }.property()
+
+});
diff --git a/app/templates/index.hbs b/app/templates/index.hbs
index b7f14f2..ee779e2 100644
--- a/app/templates/index.hbs
+++ b/app/templates/index.hbs
@@ -8,7 +8,7 @@
     {{contributor-list contributors=model.contributors}}
 
     <p class="stats">
-      <span class="number">{{kreditsSum}}</span> kredits issued and distributed among
+      <span class="number">{{kredits.totalSupply}}</span> kredits issued and distributed among
       <span class="number">{{contributorsCount}}</span> contributors.
     </p>
   </div>
diff --git a/package.json b/package.json
index 4a36641..0623470 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   "devDependencies": {
     "broccoli-asset-rev": "^2.4.5",
     "ember-ajax": "^2.4.1",
+    "ember-browserify": "^1.1.13",
     "ember-cli": "2.10.0",
     "ember-cli-app-version": "^2.0.0",
     "ember-cli-babel": "^5.1.7",
@@ -34,7 +35,8 @@
     "ember-export-application-global": "^1.0.5",
     "ember-load-initializers": "^0.5.1",
     "ember-resolver": "^2.0.3",
-    "loader.js": "^4.0.10"
+    "loader.js": "^4.0.10",
+    "web3": "^0.18.2"
   },
   "engines": {
     "node": ">= 0.12.0"
diff --git a/tests/unit/services/kredits-test.js b/tests/unit/services/kredits-test.js
new file mode 100644
index 0000000..2bfed3b
--- /dev/null
+++ b/tests/unit/services/kredits-test.js
@@ -0,0 +1,12 @@
+import { moduleFor, test } from 'ember-qunit';
+
+moduleFor('service:kredits', 'Unit | Service | kredits', {
+  // Specify the other units that are required for this test.
+  // needs: ['service:foo']
+});
+
+// Replace this with your real tests.
+test('it exists', function(assert) {
+  let service = this.subject();
+  assert.ok(service);
+});