Get contributions from minted events (WIP)

app/models/contribution.js

@@ -0,0 +1,52 @@
+import Ember from 'ember';
+
+export default Ember.Object.extend({
+
+  // blockNumber: null,
+  // blockHash: null,
+  // transactionHash: null,
+  recipientAddress: null,
+  contributorId: null,
+  ipfsHash: null,
+  amount: null,
+
+  contribution: null,
+  kind: null,
+  description: null,
+  url: null,
+  details: null,
+
+  /**
+   * Loads the contribution details from IPFS and sets local instance
+   * properties from it
+   *
+   * @method
+   * @public
+   */
+  loadDetails(ipfs) {
+    let promise = new Ember.RSVP.Promise((resolve, reject) => {
+      ipfs.getFile(this.get('ipfsHash')).then(content => {
+        let contributionJSON = JSON.parse(content);
+        let contribution = Ember.Object.create(contributionJSON);
+
+        this.setProperties({
+          kind: contribution.get('kind'),
+          description: contribution.get('description'),
+          url: contribution.get('url')
+        });
+
+        // TODO load details
+        // let details = profile.get('accounts');
+
+        Ember.Logger.debug('[proposal] loaded contribution details', contributionJSON);
+        resolve();
+      }).catch((err) => {
+        Ember.Logger.error('[proposal] error trying to load contribution details', this.get('ipfsHash'), err);
+        reject(err);
+      });
+    });
+
+    return promise;
+  },
+
+});

app/routes/index.js

@@ -26,6 +26,7 @@ export default Ember.Route.extend({
       contributors: kredits.getContributors(),
       totalSupply: kredits.getValueFromContract('tokenContract', 'totalSupply'),
       proposals: kredits.getProposals(),
+      contributions: kredits.getContributions(),
       newContributor: Contributor.create({ kind: 'person' })
     });
   }

app/services/kredits.js

@@ -3,6 +3,7 @@ import Web3 from 'npm:web3';
 import config from 'kredits-web/config/environment';
 import Contributor from 'kredits-web/models/contributor';
 import Proposal from 'kredits-web/models/proposal';
+import Contribution from 'kredits-web/models/contribution';
 import kreditsContracts from 'npm:kredits-contracts';
 import uuid from 'npm:uuid';
 
@@ -226,6 +227,56 @@ export default Service.extend({
     });
   },
 
+  getTokenMintedEvents(fromBlock=0, toBlock='latest') {
+    return new Ember.RSVP.Promise((resolve, reject) => {
+      const minted = this.get('tokenContract')
+                         .Minted({}, {fromBlock: fromBlock, toBlock: toBlock});
+
+      minted.get((err, res) => {
+        if (err) {
+          Ember.Logger.error('[kredits] Error reading Token#Minted events', res);
+          reject(err);
+          return;
+        }
+        Ember.Logger.warn('[kredits] Token#Minted events', res);
+        resolve(res);
+      });
+    });
+  },
+
+  getContributions() {
+    // this.getTokenMintedEvents().then(events => {
+      let contributions = [];
+
+      config.fixtures.mintedEvents.forEach(mintedEvent => {
+        contributions.push(this.getContributionData(mintedEvent));
+      });
+
+      return Ember.RSVP.all(contributions);
+    // });
+  },
+
+  getContributionData(mintedEvent) {
+    return new Ember.RSVP.Promise((resolve, reject) => {
+      let contribution = Contribution.create({
+        recipientAddress: mintedEvent.args.recipientAddress,
+        contributorId: mintedEvent.args.contributorId,
+        amount: mintedEvent.args.amount,
+        ipfsHash: mintedEvent.args.reference
+      });
+
+      if (contribution.get('ipfsHash')) {
+        contribution.loadDetails(this.get('ipfs')).then(
+          () => resolve(contribution),
+          err => reject(err)
+        );
+      } else {
+        Ember.Logger.warn('[kredits] contribution from Minted event is missing IPFS hash', contribution);
+        resolve(contribution);
+      }
+    });
+  },
+
   // logKreditsContract: function() {
   //   Ember.Logger.debug('[kredits] kreditsContract', this.get('kreditsContract'));
   // }.on('init')