social.sol

pragma solidity ^0.4.10;

contract Account {
    string public name;
    string public bio;
    string[] public posts;
    address public owner;
    address[] public following;

    
    modifier isOwner() {
        require(owner == msg.sender);
        _;
    }
    
    function Account() {
        owner = msg.sender;
    }
    
    function setName(string _name) isOwner {
        name = _name;
    }
    
    function setBio(string _bio) isOwner {
        bio = _bio;
    }
    
    function post(string _post) isOwner {
        posts.push(_post);
    }
    
    function follow(address account) isOwner {
        for(var i = 0; i < following.length; i++) {
            if(following[i] == address(0)) {
                following[i] = account;
                return;
            }
        }
        
        following.push(account);
    }
    
    function unfollow(address account) isOwner {
        for(var i = 0; i < following.length; i++) {
            if(following[i] == account) {
                following[i] = address(0);
                return;
            }
        }
    }
}