package eu.siacs.conversations.entities;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;

import eu.siacs.conversations.Config;
import eu.siacs.conversations.xmpp.jid.InvalidJidException;
import eu.siacs.conversations.xmpp.jid.Jid;

import android.content.ContentValues;
import android.database.Cursor;

public class Message extends AbstractEntity {

	public static final String TABLENAME = "messages";

	public static final int STATUS_RECEIVED = 0;
	public static final int STATUS_UNSEND = 1;
	public static final int STATUS_SEND = 2;
	public static final int STATUS_SEND_FAILED = 3;
	public static final int STATUS_WAITING = 5;
	public static final int STATUS_OFFERED = 6;
	public static final int STATUS_SEND_RECEIVED = 7;
	public static final int STATUS_SEND_DISPLAYED = 8;

	public static final int ENCRYPTION_NONE = 0;
	public static final int ENCRYPTION_PGP = 1;
	public static final int ENCRYPTION_OTR = 2;
	public static final int ENCRYPTION_DECRYPTED = 3;
	public static final int ENCRYPTION_DECRYPTION_FAILED = 4;

	public static final int TYPE_TEXT = 0;
	public static final int TYPE_IMAGE = 1;
	public static final int TYPE_AUDIO = 2;
	public static final int TYPE_STATUS = 3;
	public static final int TYPE_PRIVATE = 4;

	public static String CONVERSATION = "conversationUuid";
	public static String COUNTERPART = "counterpart";
	public static String TRUE_COUNTERPART = "trueCounterpart";
	public static String BODY = "body";
	public static String TIME_SENT = "timeSent";
	public static String ENCRYPTION = "encryption";
	public static String STATUS = "status";
	public static String TYPE = "type";
	public static String REMOTE_MSG_ID = "remoteMsgId";

	protected String conversationUuid;
	protected Jid counterpart;
	protected String trueCounterpart;
	protected String body;
	protected String encryptedBody;
	protected long timeSent;
	protected int encryption;
	protected int status;
	protected int type;
	protected boolean read = true;
	protected String remoteMsgId = null;

	protected Conversation conversation = null;
	protected Downloadable downloadable = null;
	public boolean markable = false;

	private Message mNextMessage = null;
	private Message mPreviousMessage = null;

	private Message() {

	}

	public Message(Conversation conversation, String body, int encryption) {
		this(java.util.UUID.randomUUID().toString(), conversation.getUuid(),
				conversation.getContactJid(), null, body, System
						.currentTimeMillis(), encryption,
				Message.STATUS_UNSEND, TYPE_TEXT, null);
		this.conversation = conversation;
	}

	public Message(final Conversation conversation, final Jid counterpart, final String body,
			final int encryption, final int status) {
		this(java.util.UUID.randomUUID().toString(), conversation.getUuid(),
				counterpart, null, body, System.currentTimeMillis(),
				encryption, status, TYPE_TEXT, null);
		this.conversation = conversation;
	}

	public Message(final String uuid, final String conversationUUid, final Jid counterpart,
			final String trueCounterpart, final String body, final long timeSent,
            final int encryption, final int status, final int type, final String remoteMsgId) {
		this.uuid = uuid;
		this.conversationUuid = conversationUUid;
		this.counterpart = counterpart;
		this.trueCounterpart = trueCounterpart;
		this.body = body;
		this.timeSent = timeSent;
		this.encryption = encryption;
		this.status = status;
		this.type = type;
		this.remoteMsgId = remoteMsgId;
	}

	@Override
	public ContentValues getContentValues() {
		ContentValues values = new ContentValues();
		values.put(UUID, uuid);
		values.put(CONVERSATION, conversationUuid);
		values.put(COUNTERPART, counterpart.toString());
		values.put(TRUE_COUNTERPART, trueCounterpart);
		values.put(BODY, body);
		values.put(TIME_SENT, timeSent);
		values.put(ENCRYPTION, encryption);
		values.put(STATUS, status);
		values.put(TYPE, type);
		values.put(REMOTE_MSG_ID, remoteMsgId);
		return values;
	}

	public String getConversationUuid() {
		return conversationUuid;
	}

	public Conversation getConversation() {
		return this.conversation;
	}

	public Jid getCounterpart() {
		return counterpart;
	}

	public Contact getContact() {
		if (this.conversation.getMode() == Conversation.MODE_SINGLE) {
			return this.conversation.getContact();
		} else {
			if (this.trueCounterpart == null) {
				return null;
			} else {
				return this.conversation.getAccount().getRoster()
						.getContactFromRoster(this.trueCounterpart);
			}
		}
	}

	public String getBody() {
		return body;
	}

	public long getTimeSent() {
		return timeSent;
	}

	public int getEncryption() {
		return encryption;
	}

	public int getStatus() {
		return status;
	}

	public String getRemoteMsgId() {
		return this.remoteMsgId;
	}

	public void setRemoteMsgId(String id) {
		this.remoteMsgId = id;
	}

	public static Message fromCursor(Cursor cursor) {
        Jid jid;
        try {
            jid = Jid.fromString(cursor.getString(cursor.getColumnIndex(COUNTERPART)));
        } catch (InvalidJidException e) {
            jid = null;
        }
        return new Message(cursor.getString(cursor.getColumnIndex(UUID)),
				cursor.getString(cursor.getColumnIndex(CONVERSATION)),
				jid,
				cursor.getString(cursor.getColumnIndex(TRUE_COUNTERPART)),
				cursor.getString(cursor.getColumnIndex(BODY)),
				cursor.getLong(cursor.getColumnIndex(TIME_SENT)),
				cursor.getInt(cursor.getColumnIndex(ENCRYPTION)),
				cursor.getInt(cursor.getColumnIndex(STATUS)),
				cursor.getInt(cursor.getColumnIndex(TYPE)),
				cursor.getString(cursor.getColumnIndex(REMOTE_MSG_ID)));
	}

	public void setConversation(Conversation conv) {
		this.conversation = conv;
	}

	public void setStatus(int status) {
		this.status = status;
	}

	public boolean isRead() {
		return this.read;
	}

	public void markRead() {
		this.read = true;
	}

	public void markUnread() {
		this.read = false;
	}

	public void setTime(long time) {
		this.timeSent = time;
	}

	public void setEncryption(int encryption) {
		this.encryption = encryption;
	}

	public void setBody(String body) {
		this.body = body;
	}

	public String getEncryptedBody() {
		return this.encryptedBody;
	}

	public void setEncryptedBody(String body) {
		this.encryptedBody = body;
	}

	public void setType(int type) {
		this.type = type;
	}

	public int getType() {
		return this.type;
	}

	public void setTrueCounterpart(String trueCounterpart) {
		this.trueCounterpart = trueCounterpart;
	}

	public void setDownloadable(Downloadable downloadable) {
		this.downloadable = downloadable;
	}

	public Downloadable getDownloadable() {
		return this.downloadable;
	}

	public static Message createStatusMessage(Conversation conversation) {
		Message message = new Message();
		message.setType(Message.TYPE_STATUS);
		message.setConversation(conversation);
		return message;
	}

	public void setCounterpart(final Jid counterpart) {
		this.counterpart = counterpart;
	}

	public boolean equals(Message message) {
		if ((this.remoteMsgId != null) && (this.body != null)
				&& (this.counterpart != null)) {
			return this.remoteMsgId.equals(message.getRemoteMsgId())
					&& this.body.equals(message.getBody())
					&& this.counterpart.equals(message.getCounterpart());
		} else {
			return false;
		}
	}

	public Message next() {
		if (this.mNextMessage == null) {
			synchronized (this.conversation.messages) {
				int index = this.conversation.messages.indexOf(this);
				if (index < 0
						|| index >= this.conversation.getMessages().size() - 1) {
					this.mNextMessage = null;
				} else {
					this.mNextMessage = this.conversation.messages
							.get(index + 1);
				}
			}
		}
		return this.mNextMessage;
	}

	public Message prev() {
		if (this.mPreviousMessage == null) {
			synchronized (this.conversation.messages) {
				int index = this.conversation.messages.indexOf(this);
				if (index <= 0 || index > this.conversation.messages.size()) {
					this.mPreviousMessage = null;
				} else {
					this.mPreviousMessage = this.conversation.messages
							.get(index - 1);
				}
			}
		}
		return this.mPreviousMessage;
	}

	public boolean mergeable(Message message) {
		if (message == null) {
			return false;
		}
		return (message.getType() == Message.TYPE_TEXT
				&& this.getDownloadable() == null
				&& message.getDownloadable() == null
				&& message.getEncryption() != Message.ENCRYPTION_PGP
				&& this.getType() == message.getType()
				&& this.getEncryption() == message.getEncryption()
				&& this.getCounterpart().equals(message.getCounterpart())
				&& (message.getTimeSent() - this.getTimeSent()) <= (Config.MESSAGE_MERGE_WINDOW * 1000) && ((this
				.getStatus() == message.getStatus() || ((this.getStatus() == Message.STATUS_SEND || this
				.getStatus() == Message.STATUS_SEND_RECEIVED) && (message
				.getStatus() == Message.STATUS_UNSEND
				|| message.getStatus() == Message.STATUS_SEND || message
					.getStatus() == Message.STATUS_SEND_DISPLAYED))))
				&& !message.bodyContainsDownloadable()
				&& !this.bodyContainsDownloadable());
	}

	public String getMergedBody() {
		Message next = this.next();
		if (this.mergeable(next)) {
			return body.trim() + '\n' + next.getMergedBody();
		}
		return body.trim();
	}

	public int getMergedStatus() {
		Message next = this.next();
		if (this.mergeable(next)) {
			return next.getMergedStatus();
		} else {
			return getStatus();
		}
	}

	public long getMergedTimeSent() {
		Message next = this.next();
		if (this.mergeable(next)) {
			return next.getMergedTimeSent();
		} else {
			return getTimeSent();
		}
	}

	public boolean wasMergedIntoPrevious() {
		Message prev = this.prev();
        return prev != null && prev.mergeable(this);
	}
	
	public boolean trusted() {
		Contact contact = this.getContact();
		return (status > STATUS_RECEIVED || (contact != null && contact.trusted()));
	}

	public boolean bodyContainsDownloadable() {
		try {
			URL url = new URL(this.getBody());
			if (!url.getProtocol().equalsIgnoreCase("http")
					&& !url.getProtocol().equalsIgnoreCase("https")) {
				return false;
			}
			if (url.getPath() == null) {
				return false;
			}
			String[] pathParts = url.getPath().split("/");
			String filename;
			if (pathParts.length > 0) {
				filename = pathParts[pathParts.length - 1];
			} else {
				return false;
			}
			String[] extensionParts = filename.split("\\.");
			if (extensionParts.length == 2
					&& Arrays.asList(Downloadable.VALID_EXTENSIONS).contains(
							extensionParts[extensionParts.length - 1])) {
				return true;
			} else if (extensionParts.length == 3
					&& Arrays
							.asList(Downloadable.VALID_CRYPTO_EXTENSIONS)
							.contains(extensionParts[extensionParts.length - 1])
					&& Arrays.asList(Downloadable.VALID_EXTENSIONS).contains(
							extensionParts[extensionParts.length - 2])) {
				return true;
			} else {
				return false;
			}
		} catch (MalformedURLException e) {
			return false;
		}
	}

	public ImageParams getImageParams() {
		ImageParams params = getLegacyImageParams();
		if (params!=null) {
			return params;
		}
		params = new ImageParams();
		if (this.downloadable != null) {
			params.size = this.downloadable.getFileSize();
		}
		if (body == null) {
			return params;
		}
		String parts[] = body.split("\\|");
		if (parts.length == 1) {
			try {
				params.size = Long.parseLong(parts[0]);
			} catch (NumberFormatException e) {
				params.origin = parts[0];
				try {
					params.url = new URL(parts[0]);
				} catch (MalformedURLException e1) {
					params.url = null;
				}
			}
		} else if (parts.length == 3) {
			try {
				params.size = Long.parseLong(parts[0]);
			} catch (NumberFormatException e) {
				params.size = 0;
			}
			try {
				params.width = Integer.parseInt(parts[1]);
			} catch (NumberFormatException e) {
				params.width = 0;
			}
			try {
				params.height = Integer.parseInt(parts[2]);
			} catch (NumberFormatException e) {
				params.height = 0;
			}
		} else if (parts.length == 4) {
			params.origin = parts[0];
			try {
				params.url = new URL(parts[0]);
			} catch (MalformedURLException e1) {
				params.url = null;
			}
			try {
				params.size = Long.parseLong(parts[1]);
			} catch (NumberFormatException e) {
				params.size = 0;
			}
			try {
				params.width = Integer.parseInt(parts[2]);
			} catch (NumberFormatException e) {
				params.width = 0;
			}
			try {
				params.height = Integer.parseInt(parts[3]);
			} catch (NumberFormatException e) {
				params.height = 0;
			}
		}
		return params;
	}
	
	public ImageParams getLegacyImageParams() {
		ImageParams params = new ImageParams();
		if (body == null) {
			return params;
		}
		String parts[] = body.split(",");
		if (parts.length == 3) {
			try {
				params.size = Long.parseLong(parts[0]);
			} catch (NumberFormatException e) {
				return null;
			}
			try {
				params.width = Integer.parseInt(parts[1]);
			} catch (NumberFormatException e) {
				return null;
			}
			try {
				params.height = Integer.parseInt(parts[2]);
			} catch (NumberFormatException e) {
				return null;
			}
			return params;
		} else {
			return null;
		}
	}

	public class ImageParams {
		public URL url;
		public long size = 0;
		public int width = 0;
		public int height = 0;
		public String origin;
	}
}