TDLightTelegramBots/telegrambots-meta/src/main/java/org/telegram/telegrambots/meta/api/methods/groupadministration/GetChatMemberCount.java

package org.telegram.telegrambots.meta.api.methods.groupadministration;

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import lombok.Setter;
import lombok.ToString;
import lombok.experimental.Tolerate;
import org.telegram.telegrambots.meta.api.methods.BotApiMethod;
import org.telegram.telegrambots.meta.exceptions.TelegramApiRequestException;
import org.telegram.telegrambots.meta.exceptions.TelegramApiValidationException;

/**
 * @author Ruben Bermudez
 * @version 5.3
 * Use this method to get the number of members in a chat. Returns Int on success.
 */
@EqualsAndHashCode(callSuper = false)
@Getter
@Setter
@ToString
@NoArgsConstructor(force = true)
@AllArgsConstructor
@Builder
public class GetChatMemberCount extends BotApiMethod<Integer> {
    public static final String PATH = "getChatMemberCount";

    private static final String CHATID_FIELD = "chat_id";

    @JsonProperty(CHATID_FIELD)
    @NonNull
    private String chatId; ///< Unique identifier for the chat to send the message to (Or username for channels)

    @Tolerate
    public void setChatId(@NonNull Long chatId) {
        this.chatId = chatId.toString();
    }

    @Override
    public String getMethod() {
        return PATH;
    }

    @Override
    public Integer deserializeResponse(String answer) throws TelegramApiRequestException {
        return deserializeResponse(answer, Integer.class);
    }

    @Override
    public void validate() throws TelegramApiValidationException {
        if (chatId.isEmpty()) {
            throw new TelegramApiValidationException("ChatId can't be empty", this);
        }
    }

    public static class GetChatMemberCountBuilder {

        @Tolerate
        public GetChatMemberCountBuilder chatId(@NonNull Long chatId) {
            this.chatId = chatId.toString();
            return this;
        }
    }
}