Adjust API for new ethers v5 API

see issue for details: https://github.com/ethers-io/ethers.js/issues/920#issuecomment-650836642

lib/contracts/acl.js

@@ -5,7 +5,7 @@ class Acl extends Base {
   hasPermission (fromAddress, contractAddress, roleID, params = null) {
     let roleHash = EthersUtils.keccak256(EthersUtils.toUtf8Bytes(roleID));
 
-    return this.functions.hasPermission(
+    return this.hasPermission(
       fromAddress,
       contractAddress,
       roleHash,

lib/contracts/base.js

@@ -1,10 +1,13 @@
+const deprecate = require('../utils/deprecate');
+
 class Base {
   constructor (contract) {
     this.contract = contract;
   }
 
   get functions () {
-    return this.contract.functions;
+    deprecate('The property `functions` is deprecated. contract functions are now directly defined on the ethers contract object. https://github.com/ethers-io/ethers.js/issues/920#issuecomment-650836642');
+    return this.contract;
   }
 
   get address () {

lib/contracts/contribution.js

@@ -4,33 +4,33 @@ const deprecate = require('../utils/deprecate');
 
 class Contribution extends Record {
   get count () {
-    return this.functions.contributionsCount();
+    return this.contract.contributionsCount();
   }
 
   getById (id) {
-    return this.functions.getContribution(id)
+    return this.contract.getContribution(id)
       .then(data => {
         return this.ipfs.catAndMerge(data, ContributionSerializer.deserialize);
       });
   }
 
   getData (id) {
-    return this.functions.getContribution(id);
+    return this.contract.getContribution(id);
   }
 
   getByContributorId (contributorId) {
-    return this.functions.getContributorAddressById(contributorId)
+    return this.contract.getContributorAddressById(contributorId)
       .then(address => this.getByContributorAddress(address));
   }
 
   getByContributorAddress (address) {
-    return this.functions.balanceOf(address)
+    return this.contract.balanceOf(address)
       .then(async (balance) => {
         const count = balance.toNumber();
         const contributions = [];
 
         for (let index = 0; index < count; index++) {
-          const id = await this.functions.tokenOfOwnerByIndex(address, index);
+          const id = await this.contract.tokenOfOwnerByIndex(address, index);
           const contribution = await this.getById(id);
           contributions.push(contribution);
         }
@@ -58,7 +58,7 @@ class Contribution extends Record {
           ipfsHashAttr.hashSize,
         ];
 
-        return this.functions.add(...contribution, callOptions);
+        return this.contract.add(...contribution, callOptions);
       });
   }
 

lib/contracts/contributor.js

@@ -4,11 +4,11 @@ const formatKredits = require('../utils/format-kredits');
 
 class Contributor extends Record {
   get count () {
-    return this.functions.contributorsCount();
+    return this.contract.contributorsCount();
   }
 
   getById (id) {
-    return this.functions.getContributorById(id)
+    return this.contract.getContributorById(id)
       .then(contractData => {
         let data = {...contractData};
         data.balanceInt = formatKredits(data.balance);
@@ -17,7 +17,7 @@ class Contributor extends Record {
   }
 
   getData (id) {
-    return this.functions.getContributorById(id);
+    return this.contract.getContributorById(id);
   }
 
   filterByAccount (search) {
@@ -62,7 +62,7 @@ class Contributor extends Record {
           ipfsHashAttr.hashSize,
         ];
 
-        return this.functions.addContributor(...contributor, callOptions);
+        return this.contract.addContributor(...contributor, callOptions);
       });
   }
 
@@ -79,7 +79,7 @@ class Contributor extends Record {
       return this.ipfs
         .add(jsonStr)
         .then(ipfsHashAttr => {
-          return this.functions.updateContributorProfileHash(
+          return this.contract.updateContributorProfileHash(
             contributorId,
             ipfsHashAttr.hashDigest,
             ipfsHashAttr.hashFunction,

lib/contracts/kernel.js

@@ -11,9 +11,9 @@ class Kernel extends Base {
 
   getApp (appName) {
     if (appName === 'Acl') {
-      return this.functions.acl();
+      return this.contract.acl();
     }
-    return this.functions.getApp(KERNEL_APP_ADDR_NAMESPACE, this.appNamehash(appName));
+    return this.contract.getApp(KERNEL_APP_ADDR_NAMESPACE, this.appNamehash(appName));
   }
 
   appNamehash (appName) {

lib/contracts/proposal.js

@@ -4,11 +4,11 @@ const deprecate = require('../utils/deprecate');
 
 class Proposal extends Record {
   get count () {
-    return this.functions.proposalsCount();
+    return this.contract.proposalsCount();
   }
 
   getById (id) {
-    return this.functions.getProposal(id)
+    return this.contract.getProposal(id)
       .then(data => {
         return this.ipfs.catAndMerge(data, ContributionSerializer.deserialize);
       });
@@ -33,7 +33,7 @@ class Proposal extends Record {
           ipfsHashAttr.hashSize,
         ];
 
-        return this.functions.addProposal(...proposal, callOptions);
+        return this.contract.addProposal(...proposal, callOptions);
       });
   }