feature: add getsourcecode method

Author: sebs

lib/contract.js

@@ -6,9 +6,7 @@ module.exports = function(getRequest, apiKey) {
      * @param {string} address - Contract address
      * @example
      * api.contract
-     *  .getabi('0xfb6916095ca1df60bb79ce92ce3ea74c37c5d359')
-     *  .at('0xfb6916095ca1df60bb79ce92ce3ea74c37c5d359')
-     *  .memberId('0xfb6916095ca1df60bb79ce92ce3ea74c37c5d359')
+     *  .getabi('0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413')
      *  .then(console.log)
      * @returns {Promise.<object>}
      */
@@ -21,6 +19,28 @@ module.exports = function(getRequest, apiKey) {
       });
 
       return getRequest(query);
-    }
+    },
+    /**
+     * Returns the Sourcecode of a given verified contract
+     * @param {string} address - Contract address
+     * @example
+     * api.contract
+     *  .getsourcecode('0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413')
+     *  .then(console.log)
+     * @returns {Promise.<object>}
+     */
+    getsourcecode(address) {
+      const module = 'contract';
+      const action = 'getsourcecode';
+
+      var query = querystring.stringify({
+        module, action, address, apiKey
+      });
+
+      return getRequest(query);
+    },
+
+
+
   };
 };

test/methods-test.js

@@ -169,6 +169,17 @@ describe('api', function() {
     });
   });
 
+  it('contract.getsourcecode', function(done){
+    var api = init(process.env.API_KEY);
+    var abi = api.contract.getsourcecode('0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413');
+    abi.then(function(){
+      assert.ok(true);
+      done();
+    }).catch(err=> {
+      assert.equal(err, 'Contract source code not verified');
+      done();
+    });
+  }).timeout(100000);
 
 
   describe('proxy', function() {