Refactor IPFS pinner

lib/contracts/contribution.js

@@ -14,6 +14,10 @@ class Contribution extends Record {
       });
   }
 
+  getData (id) {
+    return this.functions.getContribution(id);
+  }
+
   getByContributorId (contributorId) {
     return this.functions.getContributorAddressById(contributorId)
       .then(address => this.getByContributorAddress(address));
@@ -62,6 +66,7 @@ class Contribution extends Record {
     deprecate('The function `addContribution()` is deprecated and will be removed in the next major version. Use `add()` instead');
     return this.add(...arguments);
   }
+
 }
 
 module.exports = Contribution;

lib/contracts/contributor.js

@@ -15,6 +15,10 @@ class Contributor extends Record {
       });
   }
 
+  getData (id) {
+    return this.functions.getContributorById(id);
+  }
+
   filterByAccount (search) {
     return this._byAccount(search, 'filter');
   }
@@ -84,6 +88,7 @@ class Contributor extends Record {
         });
     });
   }
+
 }
 
 module.exports = Contributor;

lib/contracts/record.js

@@ -9,6 +9,18 @@ class Record extends Base {
         return Promise.all(records);
       });
   }
+
+  pinIpfsHashes () {
+    return this.count.then(count => {
+      let promises = [...Array(count).keys()].map(i => {
+        let id = i + 1; // 0 => 1 - ids start with 1 and not with 0
+        return this.getData(id).then(data => {
+          return this.ipfs.pin(data);
+        });
+      });
+      return Promise.all(promises);
+    });
+  }
 }
 
 module.exports = Record;

lib/utils/ipfs-pinner.js

@@ -0,0 +1,32 @@
+class IpfsPinner {
+  constructor (kredits) {
+    this.kredits = kredits;
+  }
+
+  pinAll () {
+    return Promise.all([
+      this.kredits.Contributor.pinIpfsHashes(),
+      this.kredits.Contribution.pinIpfsHashes(),
+    ]);
+  }
+
+  monitor (callback) {
+    this.kredits.Contribution.on('ContributionAdded', (id) => {
+      this.kredits.Contribution.getData(id)
+        .then(data => { return this.kredits.ipfs.pin(data); })
+        .then(callback);
+    });
+    this.kredits.Contributor.on('ContributorAdded', (id) => {
+      this.kredits.Contribution.getData(id)
+        .then(data => { return this.kredits.ipfs.pin(data); })
+        .then(callback);
+    });
+    this.kredits.Contributor.on('ContributorProfileUpdated', (id) => {
+      this.kredits.Contributor.getData(id)
+        .then(data => { return this.kredits.ipfs.pin(data); })
+        .then(callback);
+    });
+  }
+
+}
+module.exports = IpfsPinner;

lib/utils/ipfs.js

@@ -41,6 +41,14 @@ class IPFS {
     return this._ipfsAPI.cat(ipfsHash);
   }
 
+  pin (hashData) {
+    let ipfsHash = hashData; // default - if it is a string
+    if (hashData.hasOwnProperty('hashSize')) {
+      ipfsHash = this.encodeHash(hashData);
+    }
+    return this._ipfsAPI.pin.add(multihashes.toB58String(ipfsHash));
+  }
+
   decodeHash (ipfsHash) {
     let multihash = multihashes.decode(multihashes.fromB58String(ipfsHash));
     return {