/**
* This function returns to a logged user he's own information.
*
* @param a the authentication object
* @return the user information or null if wrong authentication
*/
public UserInfo myUser(Auth a) {
Integer uid = Auths.getInstance().getUser(a);
if (uid == null) return null;
UserInfo user = dbc.loadUser(uid);
List<Position> ps = dbc.getPositions(user.getId(), 1);
if (ps.size() > 0) user.setPosition(ps.get(0));
return new SUserInfo(user);
}
/**
* Gets the last n position of a user. The user must be administrator or friend of the target to
* have rights to get this.
*
* @param a the authentication object
* @param id the target user's id
* @param c the n count of positions
* @return the array of positions
*/
public Position[] getPositions(Auth a, int id, int c) {
Integer uid = Auths.getInstance().getUser(a);
if (uid == null) return null;
if (!dbc.loadUser(uid).isAdministrator() && !dbc.areFriends(uid, id)) return null;
List<Position> ps = dbc.getPositions(id, c);
SPosition[] sp = new SPosition[ps.size()];
for (int i = 0; i < ps.size(); i++) sp[i] = new SPosition(ps.get(i));
return sp;
}
/**
* This function returns your friend list page by page.
*
* @param a the authentication object
* @param count the count of users per page
* @param page the page number
* @return the array of user's list in the page
*/
public UserInfo[] getFriendsPage(Auth a, int count, int page) {
Integer uid = Auths.getInstance().getUser(a);
if (uid == null) return null;
List<UserInfo> fs = dbc.getFriends(uid, count, page);
SUserInfo[] sf = new SUserInfo[fs.size()];
for (int i = 0; i < fs.size(); i++) {
sf[i] = new SUserInfo(fs.get(i));
List<Position> ps = dbc.getPositions(sf[i].getId(), 1);
if (ps.size() > 0) sf[i].setPosition(ps.get(0));
}
return sf;
}