/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.gecko;

import android.content.Context;
import android.text.SpannableString;
import android.text.method.LinkMovementMethod;
import android.text.style.ForegroundColorSpan;
import android.text.style.URLSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;

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

public class DoorHanger extends LinearLayout implements Button.OnClickListener {
    private static final String LOGTAG = "DoorHanger";

    private Context mContext;
    private LinearLayout mChoicesLayout;
    private TextView mTextView;
    static private LayoutParams mLayoutParams;
    public Tab mTab;
    // value used to identify the notification
    private String mValue;

    // Optional checkbox added underneath message text
    private CheckBox mCheckBox;

    static private LayoutInflater mInflater;

    private int mPersistence = 0;
    private boolean mPersistWhileVisible = false;
    private long mTimeout = 0;

    public DoorHanger(Context aContext, String aValue) {
        super(aContext);

        mContext = aContext;
        mValue = aValue;

        setOrientation(VERTICAL);
        setBackgroundResource(R.drawable.doorhanger_shadow_bg);

        if (mInflater == null)
            mInflater = LayoutInflater.from(mContext);

        mInflater.inflate(R.layout.doorhanger, this);
        hide();

        mTextView = (TextView) findViewById(R.id.doorhanger_title);
        mChoicesLayout = (LinearLayout) findViewById(R.id.doorhanger_choices);

        if (mLayoutParams == null)
            mLayoutParams = new LayoutParams(LayoutParams.FILL_PARENT,
                                             LayoutParams.FILL_PARENT,
                                             1.0f);
    }

    public void addButton(String aText, int aCallback) {
        Button mButton = new Button(mContext);
        mButton.setText(aText);
        mButton.setTag(Integer.toString(aCallback));
        mButton.setOnClickListener(this);
        mChoicesLayout.addView(mButton, mLayoutParams);
    }

    public void onClick(View v) {
        JSONObject response = new JSONObject();
        try {
            response.put("callback", v.getTag().toString());

            // If the checkbox is being used, pass its value
            if (mCheckBox != null)
                response.put("checked", mCheckBox.isChecked());
        } catch (JSONException ex) {
            Log.e(LOGTAG, "Error creating onClick response: " + ex);
        }

        GeckoEvent e = GeckoEvent.createBroadcastEvent("Doorhanger:Reply", response.toString());
        GeckoAppShell.sendEventToGecko(e);
        mTab.removeDoorHanger(mValue);

        // This will hide the doorhanger (and hide the popup if there are no
        // more doorhangers to show)
        ((GeckoApp)mContext).updatePopups(mTab);
    }

    public void show() {
        setVisibility(View.VISIBLE);
    }

    public void hide() {
        setVisibility(View.GONE);
    }

    public boolean isVisible() {
        return getVisibility() == View.VISIBLE;
    }

    public String getValue() {
        return mValue;
    }

    public void setText(String aText) {
        mTextView.setText(aText);
    }

    public Tab getTab() {
        return mTab;
    }

    public void setTab(Tab tab) {
        mTab = tab;
    }

    public void setOptions(JSONObject options) {
        try {
            mPersistence = options.getInt("persistence");
        } catch (JSONException e) { }

        try {
            mPersistWhileVisible = options.getBoolean("persistWhileVisible");
        } catch (JSONException e) { }

        try {
            mTimeout = options.getLong("timeout");
        } catch (JSONException e) { }

        try {
            JSONObject link = options.getJSONObject("link");
            String title = mTextView.getText().toString();
            String linkLabel = link.getString("label");
            String linkUrl = link.getString("url");
            SpannableString titleWithLink = new SpannableString(title + " " + linkLabel);
            URLSpan linkSpan = new URLSpan(linkUrl) {
                @Override
                public void onClick(View view) {
                    GeckoApp.mAppContext.loadUrlInTab(this.getURL());
                }
            };

            // prevent text outside the link from flashing when clicked
            ForegroundColorSpan colorSpan = new ForegroundColorSpan(mTextView.getCurrentTextColor());
            titleWithLink.setSpan(colorSpan, 0, title.length(), 0);

            titleWithLink.setSpan(linkSpan, title.length() + 1, titleWithLink.length(), 0);
            mTextView.setText(titleWithLink);
            mTextView.setMovementMethod(LinkMovementMethod.getInstance());
        } catch (JSONException e) { }

        try {
            String checkBoxText = options.getString("checkbox");
            mCheckBox = (CheckBox) findViewById(R.id.doorhanger_checkbox);
            mCheckBox.setText(checkBoxText);
            mCheckBox.setVisibility(VISIBLE);
        } catch (JSONException e) { }
    }

    // This method checks with persistence and timeout options to see if
    // it's okay to remove a doorhanger.
    public boolean shouldRemove() {
        if (mPersistWhileVisible && GeckoApp.mAppContext.mDoorHangerPopup.isShowing()) {
            // We still want to decrement mPersistence, even if the popup is showing
            if (mPersistence != 0)
                mPersistence--;
            return false;
        }

        // If persistence is set to -1, the doorhanger will never be
        // automatically removed.
        if (mPersistence != 0) {
            mPersistence--;
            return false;
        }

        if (System.currentTimeMillis() <= mTimeout) {
            return false;
        }

        return true;
    }
}