TelegramAPI/src/main/java/de/mrbesen/telegram/objects/TMessage.java

package de.mrbesen.telegram.objects;

import de.mrbesen.telegram.AsyncHandler.Task;
import de.mrbesen.telegram.TelegramAPI;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;

public class TMessage extends JSONBased {

	private int message_id;
	private TUser from = null;//optional
	private long date = -1;
	private TUser forward_from = null; //optional
	private String text = null;//optional
	private long chatid = 0;
	
	protected TelegramAPI api;
	
	public void sendTo(TUser u) {
		//if this message already exists forward, if not send directly.
		throw new RuntimeException("not implemented");
	}
	
	public boolean reply(String msg, TReplyMarkup rm) {
		if(from == null) {
			throw new RuntimeException("no from defined!");
		} else {
			return TUser.sendMessage(api, chatid != 0 ? chatid : from.getID(), msg, rm, message_id, false, null);
		}
//		try {
//			return api.request("sendMessage", "chat_id=" + from.getID() + "&text=" + msg + "&reply_to_message_id=" + message_id ).getBoolean("ok") ;
//		} catch (IOException | NullPointerException e) {
//			e.printStackTrace();
//			return false;
//		}
	}
	public boolean reply(String msg) {
		return reply(msg, null);
	}
	
	public TMessage forward(TUser us) {
		return forward(api, us.getID(), this);
	}
	public static TMessage forward(TelegramAPI api, long userid, TMessage tmsg) {
		try {
			String fro = String.valueOf(tmsg.forward_from == null ? tmsg.from.getID() : tmsg.forward_from.getID());
			return new TMessage(api.request("forwardMessage", "chat_id=" + userid + "&from_chat_id=" + fro + "&message_id=" + tmsg.message_id, userid).getJSONObject("result"), api);
		} catch (IOException | NullPointerException e) {
			e.printStackTrace();
		}
		return null;
	}
	
	public static void forwardAsync(TelegramAPI api, long userid, TMessage tmsg) {
		String fro = String.valueOf(tmsg.forward_from == null ? tmsg.from.getID() : tmsg.forward_from.getID());
		api.request(new Task("forwardMessage", "chat_id=" + userid + "&from_chat_id=" + fro + "&message_id=" + tmsg.message_id, userid));
	}

	public TMessage(JSONObject json, TelegramAPI api) {
		super(json);
		this.api = api;
		message_id = json.getInt("message_id");
		date = json.getLong("date");
		chatid = ((JSONObject) get(Member.chat)).getLong("id");
		if(json.has("from"))
			from = api.getUser(json.getJSONObject("from"));
		
		if(json.has("forward_from"))
			forward_from = api.getUser(json.getJSONObject("forward_from"));
		
		if(json.has("text") )
			text = json.getString("text");

		allowedmembers = new Member[] {Member.forward_from_message_id, Member.forward_signature, Member.forward_date, Member.reply_to_message, Member.edit_date, Member.media_group_id, Member.author_signature, Member.author_signature, Member.audio, Member.document, Member.game, Member.photo, Member.sticker, Member.video, Member.voice, Member.video_note, Member.caption, Member.contact, Member.location, Member.venue, Member.new_chat_members, Member.left_chat_members, Member.new_chat_title, Member.new_chat_photo, Member.delete_chat_photo, Member.group_chat_created, Member.supergroup_chat_created, Member.channel_chat_created, Member.migrate_from_chat_id, Member.migrate_to_chat_id, Member.pinned_message, Member.invoice, Member.successful_payment, Member.connected_website, Member.chat};
	}
	
	public long getChatID() {
		return chatid;
	}
	
	public TUser getFrom() {
		return from;
	}
	
	public String getText() {
		return text;
	}

	public long getDate() {
		return date;
	}

	public TUser getForward_from() {
		return forward_from;
	}

	public int getMessageID() {
		return message_id;
	}

	/**
	 * Get the FileID if a file is attached to this message. If More than one File is attached to this message only one file id is returned
	 * @return
	 */
	public String getFileID() {
		TSendable t = getFile();
		return t == null ? null : t.getFile_id();
	}

	/**
	 * Get the FileName if a file is attached to this message. If More than one File is attached to this message only one filename is returned
	 * @return
	 */
	public String getFileName() {
		try {
			TSendable t = getFile();
			return t == null ? null : t.get(Member.file_name); //TSendable does not garuantee a filename
		} catch (JSONException e) {
			return ""; //file exists but has no name?
		}
	}

	/**
	 * get a file if one is connected to this message
	 * @return
	 */
	private TSendable getFile() {
		try {
			if(has(Member.document))
				return new TDocument(get(Member.document));
			else if(has(Member.video))
				return new TVideo(get(Member.video));
			else if(has(Member.audio))
				return new TAudio(get(Member.audio));
			else if(has(Member.voice))
				return new TAudio(get(Member.voice)); //TODO: suboptimal, eine Voice als audio zu verstehen, sollte aber funktionieren, da alle nicht optinalen felder gleich sind
			else return null;
		} catch (Throwable t) {
			t.printStackTrace();
		}
		return null;
	}

	public static void delete(TelegramAPI api, long chatid, int msgid) {
		delete(api, chatid, msgid, false);
	}
	
	public static void delete(TelegramAPI api, long chatid, int msgid, boolean async) {
		String q = "chat_id=" + chatid + "&message_id=" + msgid;
		if(async) {
			api.requestAsync("deleteMessage", q, chatid);
		} else {
			try {
				api.request("deleteMessage", q, chatid);
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}