package server;

import server.database.*;

/**
 * Výčtový typ sloužící pro rozparsování požadavku a následné zpracování od
 * klienta.
 *
 * @author Jakub
 */
enum TYPE_REQUEST {
    ASYM_CRYPT {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            client.setPublicKeyHost(content);
            client.sendMessages(1, SYM_CRYPT, client.getSecretKey());
        }
    },
    SYM_CRYPT {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            if (!content.equals("OK")) {
                throw new NullPointerException("Transfer key failed.");
            }
        }
    },
    LOGIN {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            String[] field = content.split(System.lineSeparator());
            String username = field[0];
            int password = Integer.parseInt(field[1]);
            User user = Databse.authencation(username, password);
            String builder;
            if (user != null) {
                client.setUser(user);
                ManazerClientHandlers.getInstance().switchClientHandlerActiveToOnline(client);
                client.sendMessages(2, LOGIN, user.toString());
                return;
            }
            client.sendMessages(2, LOGIN, "FALSE");
        }

    },
    LOGOUT {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            ManazerClientHandlers.getInstance().switchClientHandlerOnlineToActive(client);
            client.setUser(null);
            client.sendMessages(2, LOGOUT, "OK");
        }
    },
    MESSAGE {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }


        }

    },
    CLOSE_CONNECTION {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            client.sendMessages(2, CLOSE_CONNECTION, "END");
            client.closeClientHandler();
        }
    },
    RECONNECT {
        @Override
        public void process(String content, IClientHandler client) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

    },
    LIST_ONLINEHOST {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            StringBuilder builder = new StringBuilder();
            String online = ManazerClientHandlers.getInstance().getListOnlineHost(client.getUser().getID());
            for (String string : online.split(System.lineSeparator())) {
                builder.append(string);
                builder.append(System.lineSeparator());
            }
            client.sendMessages(2, LIST_ONLINEHOST, builder.toString());
        }
    },
    LIST_OFFLINEHOST {
        @Override
        public void process(String content, IClientHandler client) {
            if (client == null) {
                throw new NullPointerException("Client is null.");
            }
            StringBuilder builder = new StringBuilder();
            String offline = ManazerClientHandlers.getInstance().getListOfflineHost();
            for (String string : offline.split(System.lineSeparator())) {
                builder.append(string);
                builder.append(System.lineSeparator());
            }
            client.sendMessages(2, LIST_OFFLINEHOST, builder.toString());
        }
    },
    UPDATE_HOST_STATUS {
        @Override
        public void process(String content, IClientHandler client) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }
    };

    abstract public void process(String content, IClientHandler client);

}