package backer;

/**
 * Class that contains all the constants that
 * Backer needs to run.
 *
 * @author João Loureiro
 */

public class Constants {

  /** Size of the array that is used in the DatagramPackets. */
  public static final int DATAGRAM_DATA_SIZE                   = 65500;

  /** Offset used for the extraction of data from a DatagramPacket. */
  public static final int DATAGRAM_DATA_OFFSET                 = 0;

  /** Message type that a peer sends when backing up a chunk. */
  public static final String PUTCHUNK                          = "PUTCHUNK";

  public static final int PUTCHUNK_MAX_ATTEMPTS                = 5;

  public static final String STORED                            = "STORED";

  /** Version 1.0 */
  public static final String VERSION_1_0                       = "1.0";

  /** Header terminator string. */
  public static final String CRLF                              = "\r\n\r\n";

  /** Encoding used in the packets exchanged. */
  public static final String ENCODING                          = "ISO-8859-1";

  /** Regex that represents whitespaces */
  public static final String WHITESPACE_REGEX                  = "\\s";

  public static final long ONE_SECOND                          = 1000;

  public static final int SENDER_ID_LIMIT                      = 1000;

  public static final int FOUR_HUNDRED_MILLISECONDS            = 400;

  public static final String PEER_DATABASE_NAME                = "peer.db";

  public static final String PEER_DATABASE_TABLE               = "CREATE TABLE `Chunk` (	`ID` TEXT NOT NULL, `size` INTEGER NOT NULL, `perceived_replication_degree` INTEGER NOT NULL, PRIMARY KEY(`ID`));";

  public static final String PEER_DATABASE_TABLE_CHECK         = "SELECT name FROM sqlite_master WHERE type='table' AND name='Chunk';";

  public static final String PEER_DATABASE_TABLE_CHECK_COLUMNS = "PRAGMA table_info(Chunk)";

  public static final String PEER_DATABASE_SELECT              = "SELECT * FROM Chunk WHERE ID='%s%s';";

  public static final String PEER_DATABASE_INSERT              = "INSERT INTO `Chunk`(`ID`,`size`, `perceived_replication_degree`) VALUES ('%s%s',%d,%d);";

  public static final String DATABASE_DIRECTORY                = "build/";

}