1  pragma solidity 0.4.18;
 2  
 3  
 4  /// @title User Comments
 5  /// @author Mark Beylin <mark.beylin@consensys.net>
 6  
 7  contract UserComments {
 8      event CommentAdded(string _comment, address _from, address _to, uint _time);
 9  
10      struct Comment{
11        string comment;
12        address from;
13        address to;
14        bool aboutBounty;
15        uint bountyId;
16        uint time;
17      }
18  
19      Comment[] public comments;
20  
21      modifier isValidCommentIndex(uint i){
22        require (i < comments.length);
23        _;
24      }
25  
26      function addComment(string _comment, address _to, bool _aboutBounty, uint _bountyId)
27      public
28      {
29        if (_aboutBounty){
30          comments.push(Comment(_comment, msg.sender, address(0), _aboutBounty, _bountyId, block.timestamp));
31        } else {
32          comments.push(Comment(_comment, msg.sender, _to, _aboutBounty, _bountyId, block.timestamp));
33        }
34        CommentAdded(_comment, msg.sender, _to, block.timestamp);
35      }
36  
37      function numComments()
38      public
39      constant
40      returns (uint){
41        return comments.length;
42      }
43  
44      function getComment(uint _commentId)
45      isValidCommentIndex(_commentId)
46      public
47      constant
48      returns (string, address, address, bool, uint, uint){
49        return (comments[_commentId].comment,
50                comments[_commentId].from,
51                comments[_commentId].to,
52                comments[_commentId].aboutBounty,
53                comments[_commentId].bountyId,
54                comments[_commentId].time);
55      }
56  }