TDLightTelegramBots/telegrambots-meta/src/main/java/org/telegram/telegrambots/meta/api/methods/updatingmessages/DeleteMessage.java

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

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.type.TypeReference;
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.api.objects.ApiResponse;
import org.telegram.telegrambots.meta.exceptions.TelegramApiRequestException;
import org.telegram.telegrambots.meta.exceptions.TelegramApiValidationException;

import java.io.IOException;

/**
 * @author Ruben Bermudez
 * @version 1.0
 *
 * Use this method to delete a message, including service messages, with the following limitations:
 * - A message can only be deleted if it was sent less than 48 hours ago.
 * - Bots can delete outgoing messages in private chats, groups, and supergroups.
 * - Bots can delete incoming messages in private chats.
 * - Bots granted can_post_messages permissions can delete outgoing messages in channels.
 * - If the bot is an administrator of a group, it can delete any message there.
 * - If the bot has can_delete_messages permission in a supergroup or a channel, it can delete any message there.
 * Returns True on success.
 */
@EqualsAndHashCode(callSuper = false)
@Getter
@Setter
@ToString
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class DeleteMessage extends BotApiMethod<Boolean> {
    public static final String PATH = "deleteMessage";

    private static final String CHATID_FIELD = "chat_id";
    private static final String MESSAGEID_FIELD = "message_id";

    /**
     * Unique identifier for the chat to send the message to (Or username for channels)
     */
    @JsonProperty(CHATID_FIELD)
    @NonNull
    private String chatId;
    /**
     * Identifier of the message to delete
     */
    @JsonProperty(MESSAGEID_FIELD)
    @NonNull
    private Integer messageId;

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

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

    @Override
    public Boolean deserializeResponse(String answer) throws TelegramApiRequestException {
        try {
            ApiResponse<Boolean> result = OBJECT_MAPPER.readValue(answer,
                    new TypeReference<ApiResponse<Boolean>>() {
                    });
            if (result.getOk()) {
                return result.getResult();
            } else {
                throw new TelegramApiRequestException("Error deleting message", result);
            }
        } catch (IOException e) {
            throw new TelegramApiRequestException("Unable to deserialize response", e);
        }
    }

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

    public static class DeleteMessageBuilder {

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