Create and implement basic command
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package org.telegram.telegrambots.api.commands;
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import org.telegram.telegrambots.bots.AbsSender;
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/**
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* Representation of a command, which can be executed
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*
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* @author tschulz
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*/
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public abstract class Command extends AbsSender {
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public final static String COMMAND_INIT_CHARACTER = "/";
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public final static String COMMAND_PARAMETER_SEPERATOR = " ";
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private final static int COMMAND_MAX_LENGTH = 32;
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private final String commandIdentifier;
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private final String description;
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private final String botToken;
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/**
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* construct a command
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*
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* @param commandIdentifier the unique identifier of this command (e.g. the command string to enter into chat)
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* @param description the description of this command
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*/
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public Command(String commandIdentifier, String description, String botToken) {
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if (commandIdentifier == null || commandIdentifier.isEmpty()) {
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throw new IllegalArgumentException("commandIdentifier for command cannot be null or empty");
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}
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if (commandIdentifier.startsWith(COMMAND_INIT_CHARACTER)) {
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commandIdentifier = commandIdentifier.substring(1);
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}
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if (commandIdentifier.length() + 1 > COMMAND_MAX_LENGTH) {
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throw new IllegalArgumentException("commandIdentifier cannot be longer than " + COMMAND_MAX_LENGTH + " (including " + COMMAND_INIT_CHARACTER + ")");
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}
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this.commandIdentifier = commandIdentifier.toLowerCase();
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this.description = description;
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this.botToken = botToken;
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}
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/**
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* get the identifier of this command
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*
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* @return the identifier
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*/
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public final String getCommandIdentifier() {
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return commandIdentifier;
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}
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/**
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* get the description of this command
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*
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* @return the description as String
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*/
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public String getDescription() {
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return description;
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}
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@Override
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public String getBotToken() {
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return botToken;
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}
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/**
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* execute the command
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*
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* @param arguments passed arguments
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* @param chatId id of the chat, to be able to send replies
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*/
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abstract void execute(String[] arguments, long chatId);
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}
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