org.telegram.telegrambots.meta.api.methods.groupadministration.GetChatMembersCount Maven / Gradle / Ivy
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Easy to use library to create Telegram Bots
package org.telegram.telegrambots.meta.api.methods.groupadministration;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.type.TypeReference;
import org.telegram.telegrambots.meta.api.methods.BotApiMethod;
import org.telegram.telegrambots.meta.api.objects.replykeyboard.ApiResponse;
import org.telegram.telegrambots.meta.exceptions.TelegramApiRequestException;
import org.telegram.telegrambots.meta.exceptions.TelegramApiValidationException;
import java.io.IOException;
import java.util.Objects;
/**
* @author Ruben Bermudez
* @version 1.0
* Use this method to get the number of members in a chat. Returns Int on success.
*/
public class GetChatMembersCount extends BotApiMethod {
public static final String PATH = "getChatMembersCount";
private static final String CHATID_FIELD = "chat_id";
@JsonProperty(CHATID_FIELD)
private String chatId; ///< Unique identifier for the chat to send the message to (Or username for channels)
public GetChatMembersCount() {
super();
}
public String getChatId() {
return chatId;
}
public GetChatMembersCount setChatId(String chatId) {
this.chatId = chatId;
return this;
}
public GetChatMembersCount setChatId(Long chatId) {
Objects.requireNonNull(chatId);
this.chatId = chatId.toString();
return this;
}
@Override
public String getMethod() {
return PATH;
}
@Override
public Integer deserializeResponse(String answer) throws TelegramApiRequestException {
try {
ApiResponse result = OBJECT_MAPPER.readValue(answer,
new TypeReference>(){});
if (result.getOk()) {
return result.getResult();
} else {
throw new TelegramApiRequestException("Error getting chat members count", result);
}
} catch (IOException e) {
throw new TelegramApiRequestException("Unable to deserialize response", e);
}
}
@Override
public void validate() throws TelegramApiValidationException {
if (chatId == null || chatId.isEmpty()) {
throw new TelegramApiValidationException("ChatId can't be empty", this);
}
}
@Override
public String toString() {
return "GetChatMembersCount{" +
"chatId='" + chatId + '\'' +
'}';
}
}