Add contract calls for total contribution balances

Those methods return the total kredits amounts of contribtions.

apps/contribution/contracts/Contribution.sol

@@ -118,6 +118,26 @@ contract Contribution is AragonApp {
   // Custom functions
   //
 
+  function totalCount(bool confirmedOnly) public view returns (uint256 count) {
+    for (uint32 i = 1; i <= contributionsCount; i++) {
+      ContributionData memory c = contributions[i];
+      if (block.number >= c.confirmedAtBlock || !confirmedOnly) {
+        count += c.amount; // should use safemath
+      }
+    }
+  }
+
+  function contributorTotalCount(uint32 contributorId, bool confirmedOnly) public view returns (uint256 count) {
+    uint256 tokenBalance = ownedContributions[contributorId].length;
+    for (uint256 i = 0; i < tokenBalance; i++) {
+      uint32 cId = ownedContributions[contributorId][i];
+      ContributionData memory c = contributions[cId];
+      if (block.number >= c.confirmedAtBlock || !confirmedOnly) {
+        count += c.amount; // should use safemath
+      }
+    }
+  }
+
   function getContribution(uint32 contributionId) public view returns (uint32 id, uint32 contributorId, uint32 amount, bool claimed, bytes32 hashDigest, uint8 hashFunction, uint8 hashSize, uint256 confirmedAtBlock, bool exists, bool vetoed) {
     id = contributionId;
     ContributionData storage c = contributions[id];

scripts/list-contributions.js

@@ -22,6 +22,7 @@ module.exports = async function(callback) {
     let blockNumber = await kredits.provider.getBlockNumber();
     let contributions = await kredits.Contribution.all();
 
+    console.log(`Current block number: ${blockNumber}`);
     contributions.forEach((c) => {
       const confirmed = c.confirmedAtBlock <= blockNumber;
 
@@ -30,7 +31,7 @@ module.exports = async function(callback) {
         c.contributorId,
         `${c.description}`,
         c.amount.toString(),
-        confirmed,
+        `${confirmed} (${c.confirmedAtBlock})`,
         c.vetoed,
         c.claimed,
         c.ipfsHash
@@ -38,6 +39,9 @@ module.exports = async function(callback) {
     });
 
     console.log(table.toString());
+
+    let totalContributionBalances = await kredits.Contribution.functions.totalCount(true);
+    console.log(`Total confirmed balance: ${totalContributionBalances}`);
   } catch (err) {
     console.log(err);
   }