Merge branch 'master' into chore/linter

# Conflicts:
#	lib/contracts/contribution.js
#	lib/contracts/contributor.js
#	lib/contracts/proposal.js
#	lib/kredits.js
#	lib/serializers/contributor.js
#	yarn.lock

lib/contracts/contribution.js

@@ -1,19 +1,9 @@
+const Record = require('./record');
 const ContributionSerializer = require('../serializers/contribution');
-const Base = require('./base');
 
-class Contribution extends Base {
-  all () {
-    return this.functions.contributionsCount()
-      .then(async (count) => {
-        let contributions = [];
-
-        for (let id = 1; id <= count; id++) {
-          const contribution = await this.getById(id);
-          contributions.push(contribution);
-        }
-
-        return contributions;
-      });
+class Contribution extends Record {
+  get count () {
+    return this.functions.contributionsCount();
   }
 
   getById (id) {

lib/contracts/contributor.js

@@ -1,25 +1,16 @@
-const RSVP = require('rsvp');
-
+const Record = require('./record');
 const ContributorSerializer = require('../serializers/contributor');
-const Base = require('./base');
+const formatKredits = require('../utils/format-kredits');
 
-class Contributor extends Base {
-  all () {
-    return this.functions.contributorsCount()
-      .then(count => {
-        let contributors = [];
-
-        for (let id = 1; id <= count; id++) {
-          contributors.push(this.getById(id));
-        }
-
-        return RSVP.all(contributors);
-      });
+class Contributor extends Record {
+  get count () {
+    return this.functions.contributorsCount();
   }
 
   getById (id) {
     return this.functions.getContributorById(id)
-      .then((data) => {
+      .then(data => {
+        data.balanceInt = formatKredits(data.balance);
         return this.ipfs.catAndMerge(data, ContributorSerializer.deserialize);
       });
   }
@@ -48,12 +39,16 @@ class Contributor extends Base {
     });
   }
 
-  add (contributorAttr, callOptions = {}) {
-    let json = ContributorSerializer.serialize(contributorAttr);
-    // TODO: validate against schema
+  async add (contributorAttr, callOptions = {}) {
+    let contributor = new ContributorSerializer(contributorAttr);
+
+    try { await contributor.validate(); }
+    catch (error) { return Promise.reject(error); }
+
+    const jsonStr = contributor.serialize();
 
     return this.ipfs
-      .add(json)
+      .add(jsonStr)
       .then((ipfsHashAttr) => {
         let contributor = [
           contributorAttr.account,
@@ -65,6 +60,30 @@ class Contributor extends Base {
         return this.functions.addContributor(...contributor, callOptions);
       });
   }
+
+  updateProfile (contributorId, updateAttr, callOptions = {}) {
+    return this.getById(contributorId).then(async (contributor) => {
+      let updatedContributorAttr = Object.assign(contributor, updateAttr)
+      let updatedContributor = new ContributorSerializer(updatedContributorAttr);
+
+      try { await updatedContributor.validate(); }
+      catch (error) { return Promise.reject(error); }
+
+      const jsonStr = updatedContributor.serialize();
+
+      return this.ipfs
+        .add(jsonStr)
+        .then(ipfsHashAttr => {
+          return this.functions.updateContributorProfileHash(
+            contributorId,
+            ipfsHashAttr.hashDigest,
+            ipfsHashAttr.hashFunction,
+            ipfsHashAttr.hashSize,
+            callOptions
+          );
+        });
+    });
+  }
 }
 
 module.exports = Contributor;

lib/contracts/proposal.js

@@ -1,20 +1,9 @@
-const RSVP = require('rsvp');
-
+const Record = require('./record');
 const ContributionSerializer = require('../serializers/contribution');
-const Base = require('./base');
 
-class Proposal extends Base {
-  all () {
-    return this.functions.proposalsCount()
-      .then(count => {
-        let proposals = [];
-
-        for (let id = 1; id <= count; id++) {
-          proposals.push(this.getById(id));
-        }
-
-        return RSVP.all(proposals);
-      });
+class Proposal extends Record {
+  get count () {
+    return this.functions.proposalsCount();
   }
 
   getById (id) {

lib/contracts/record.js

@@ -0,0 +1,14 @@
+const Base = require('./base');
+const paged = require('../utils/pagination');
+
+class Record extends Base {
+  all(options = {}) {
+    return this.count
+      .then((count) => {
+        let records = paged(count, options).map((id) => this.getById(id));
+        return Promise.all(records);
+      });
+  }
+}
+
+module.exports = Record