package eu.siacs.conversations.entities;

import java.util.HashSet;
import java.util.Locale;
import java.util.Set;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import eu.siacs.conversations.persistance.FileBackend;
import eu.siacs.conversations.utils.UIHelper;
import eu.siacs.conversations.xml.Element;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;

public class Contact implements ListItem {
	public static final String TABLENAME = "contacts";

	public static final String SYSTEMNAME = "systemname";
	public static final String SERVERNAME = "servername";
	public static final String JID = "jid";
	public static final String OPTIONS = "options";
	public static final String SYSTEMACCOUNT = "systemaccount";
	public static final String PHOTOURI = "photouri";
	public static final String KEYS = "pgpkey";
	public static final String ACCOUNT = "accountUuid";
	public static final String AVATAR = "avatar";

	protected String accountUuid;
	protected String systemName;
	protected String serverName;
	protected String presenceName;
	protected String jid;
	protected int subscription = 0;
	protected String systemAccount;
	protected String photoUri;
	protected String avatar;
	protected JSONObject keys = new JSONObject();
	protected Presences presences = new Presences();

	protected Account account;

	protected boolean inRoster = true;

	public Lastseen lastseen = new Lastseen();

	public Contact(String account, String systemName, String serverName,
			String jid, int subscription, String photoUri,
			String systemAccount, String keys, String avatar) {
		this.accountUuid = account;
		this.systemName = systemName;
		this.serverName = serverName;
		this.jid = jid;
		this.subscription = subscription;
		this.photoUri = photoUri;
		this.systemAccount = systemAccount;
		if (keys == null) {
			keys = "";
		}
		try {
			this.keys = new JSONObject(keys);
		} catch (JSONException e) {
			this.keys = new JSONObject();
		}
		this.avatar = avatar;
	}

	public Contact(String jid) {
		this.jid = jid;
	}

	public String getDisplayName() {
		if (this.systemName != null) {
			return this.systemName;
		} else if (this.serverName != null) {
			return this.serverName;
		} else if (this.presenceName != null) {
			return this.presenceName;
		} else {
			return this.jid.split("@")[0];
		}
	}

	public String getProfilePhoto() {
		return this.photoUri;
	}

	public String getJid() {
		return this.jid.toLowerCase(Locale.getDefault());
	}

	public boolean match(String needle) {
		return needle == null
				|| jid.contains(needle.toLowerCase())
				|| getDisplayName().toLowerCase()
						.contains(needle.toLowerCase());
	}

	public ContentValues getContentValues() {
		ContentValues values = new ContentValues();
		values.put(ACCOUNT, accountUuid);
		values.put(SYSTEMNAME, systemName);
		values.put(SERVERNAME, serverName);
		values.put(JID, jid);
		values.put(OPTIONS, subscription);
		values.put(SYSTEMACCOUNT, systemAccount);
		values.put(PHOTOURI, photoUri);
		values.put(KEYS, keys.toString());
		values.put(AVATAR, avatar);
		return values;
	}

	public static Contact fromCursor(Cursor cursor) {
		return new Contact(cursor.getString(cursor.getColumnIndex(ACCOUNT)),
				cursor.getString(cursor.getColumnIndex(SYSTEMNAME)),
				cursor.getString(cursor.getColumnIndex(SERVERNAME)),
				cursor.getString(cursor.getColumnIndex(JID)),
				cursor.getInt(cursor.getColumnIndex(OPTIONS)),
				cursor.getString(cursor.getColumnIndex(PHOTOURI)),
				cursor.getString(cursor.getColumnIndex(SYSTEMACCOUNT)),
				cursor.getString(cursor.getColumnIndex(KEYS)),
				cursor.getString(cursor.getColumnIndex(AVATAR)));
	}

	public int getSubscription() {
		return this.subscription;
	}

	public void setSystemAccount(String account) {
		this.systemAccount = account;
	}

	public void setAccount(Account account) {
		this.account = account;
		this.accountUuid = account.getUuid();
	}

	public Account getAccount() {
		return this.account;
	}

	public Presences getPresences() {
		return this.presences;
	}

	public void updatePresence(String resource, int status) {
		this.presences.updatePresence(resource, status);
	}

	public void removePresence(String resource) {
		this.presences.removePresence(resource);
	}

	public void clearPresences() {
		this.presences.clearPresences();
		this.resetOption(Options.PENDING_SUBSCRIPTION_REQUEST);
	}

	public int getMostAvailableStatus() {
		return this.presences.getMostAvailableStatus();
	}

	public void setPresences(Presences pres) {
		this.presences = pres;
	}

	public void setPhotoUri(String uri) {
		this.photoUri = uri;
	}

	public void setServerName(String serverName) {
		this.serverName = serverName;
	}

	public void setSystemName(String systemName) {
		this.systemName = systemName;
	}

	public void setPresenceName(String presenceName) {
		this.presenceName = presenceName;
	}

	public String getSystemAccount() {
		return systemAccount;
	}

	public Set<String> getOtrFingerprints() {
		Set<String> set = new HashSet<String>();
		try {
			if (this.keys.has("otr_fingerprints")) {
				JSONArray fingerprints = this.keys
						.getJSONArray("otr_fingerprints");
				for (int i = 0; i < fingerprints.length(); ++i) {
					set.add(fingerprints.getString(i));
				}
			}
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return set;
	}

	public void addOtrFingerprint(String print) {
		try {
			JSONArray fingerprints;
			if (!this.keys.has("otr_fingerprints")) {
				fingerprints = new JSONArray();

			} else {
				fingerprints = this.keys.getJSONArray("otr_fingerprints");
			}
			fingerprints.put(print);
			this.keys.put("otr_fingerprints", fingerprints);
		} catch (JSONException e) {

		}
	}

	public void setPgpKeyId(long keyId) {
		try {
			this.keys.put("pgp_keyid", keyId);
		} catch (JSONException e) {

		}
	}

	public long getPgpKeyId() {
		if (this.keys.has("pgp_keyid")) {
			try {
				return this.keys.getLong("pgp_keyid");
			} catch (JSONException e) {
				return 0;
			}
		} else {
			return 0;
		}
	}

	public void setOption(int option) {
		this.subscription |= 1 << option;
	}

	public void resetOption(int option) {
		this.subscription &= ~(1 << option);
	}

	public boolean getOption(int option) {
		return ((this.subscription & (1 << option)) != 0);
	}

	public boolean showInRoster() {
		return (this.getOption(Contact.Options.IN_ROSTER) && (!this
				.getOption(Contact.Options.DIRTY_DELETE)))
				|| (this.getOption(Contact.Options.DIRTY_PUSH));
	}

	public void parseSubscriptionFromElement(Element item) {
		String ask = item.getAttribute("ask");
		String subscription = item.getAttribute("subscription");

		if (subscription != null) {
			if (subscription.equals("to")) {
				this.resetOption(Contact.Options.FROM);
				this.setOption(Contact.Options.TO);
			} else if (subscription.equals("from")) {
				this.resetOption(Contact.Options.TO);
				this.setOption(Contact.Options.FROM);
				this.resetOption(Contact.Options.PREEMPTIVE_GRANT);
			} else if (subscription.equals("both")) {
				this.setOption(Contact.Options.TO);
				this.setOption(Contact.Options.FROM);
				this.resetOption(Contact.Options.PREEMPTIVE_GRANT);
			} else if (subscription.equals("none")) {
				this.resetOption(Contact.Options.FROM);
				this.resetOption(Contact.Options.TO);
			}
		}

		// do NOT override asking if pending push request
		if (!this.getOption(Contact.Options.DIRTY_PUSH)) {
			if ((ask != null) && (ask.equals("subscribe"))) {
				this.setOption(Contact.Options.ASKING);
			} else {
				this.resetOption(Contact.Options.ASKING);
			}
		}
	}

	public Element asElement() {
		Element item = new Element("item");
		item.setAttribute("jid", this.jid);
		if (this.serverName != null) {
			item.setAttribute("name", this.serverName);
		}
		return item;
	}

	public class Options {
		public static final int TO = 0;
		public static final int FROM = 1;
		public static final int ASKING = 2;
		public static final int PREEMPTIVE_GRANT = 3;
		public static final int IN_ROSTER = 4;
		public static final int PENDING_SUBSCRIPTION_REQUEST = 5;
		public static final int DIRTY_PUSH = 6;
		public static final int DIRTY_DELETE = 7;
	}

	public class Lastseen {
		public long time = 0;
		public String presence = null;
	}

	@Override
	public int compareTo(ListItem another) {
		return this.getDisplayName().compareToIgnoreCase(
				another.getDisplayName());
	}

	public String getServer() {
		String[] split = getJid().split("@");
		if (split.length >= 2) {
			return split[1];
		} else {
			return null;
		}
	}

	@Override
	public Bitmap getImage(int size, Context context) {
		if (this.avatar != null) {
			Bitmap bm = FileBackend.getAvatar(avatar, size, context);
			if (bm == null) {
				return UIHelper.getContactPicture(this, size, context, false);
			} else {
				return bm;
			}
		} else {
			return UIHelper.getContactPicture(this, size, context, false);
		}
	}

	public boolean setAvatar(String filename) {
		if (this.avatar != null && this.avatar.equals(filename)) {
			return false;
		} else {
			this.avatar = filename;
			return true;
		}
	}

	public boolean deleteOtrFingerprint(String fingerprint) {
		boolean success = false;
		try {
			if (this.keys.has("otr_fingerprints")) {
				JSONArray newPrints = new JSONArray();
				JSONArray oldPrints = this.keys
						.getJSONArray("otr_fingerprints");
				for (int i = 0; i < oldPrints.length(); ++i) {
					if (!oldPrints.getString(i).equals(fingerprint)) {
						newPrints.put(oldPrints.getString(i));
					} else {
						success = true;
					}
				}
				this.keys.put("otr_fingerprints", newPrints);
			}
			return success;
		} catch (JSONException e) {
			return false;
		}
	}

	public boolean trusted() {
		return getOption(Options.FROM) && getOption(Options.TO);
	}
}