/*
 * Copyright (c) 2016, The Linux Foundation. All rights reserved.
 * Not a Contribution.
 *
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.camera;

import android.animation.Animator;
import android.animation.Animator.AnimatorListener;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Rect;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewPropertyAnimator;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import com.android.camera.ui.CameraControls;
import com.android.camera.ui.CountdownTimerPopup;
import com.android.camera.ui.ListMenu;
import com.android.camera.ui.ListSubMenu;
import com.android.camera.ui.ModuleSwitcher;
import com.android.camera.ui.RotateTextToast;

import org.codeaurora.snapcam.R;

import java.util.Locale;

public class CaptureMenu extends MenuController
        implements ListMenu.Listener,
        CountdownTimerPopup.Listener,
        ListSubMenu.Listener {
    private static final int POPUP_NONE = 0;
    private static final int POPUP_FIRST_LEVEL = 1;
    private static final int POPUP_SECOND_LEVEL = 2;
    private static final int POPUP_IN_ANIMATION_SLIDE = 3;
    private static final int POPUP_IN_ANIMATION_FADE = 4;
    private static final int DEVELOPER_MENU_TOUCH_COUNT = 10;
    private static final int ANIMATION_DURATION = 300;
    private static final String TAG = "SnapCam_CaptureMenu";
    private String[] mOtherKeys1;
    private String[] mOtherKeys2;
    private ListMenu mListMenu;
    private CaptureUI mUI;
    private int mPopupStatus;
    private ListSubMenu mListSubMenu;
    private CameraActivity mActivity;
    private int privateCounter = 0;

    public CaptureMenu(CameraActivity activity, CaptureUI ui) {
        super(activity);
        mUI = ui;
        mActivity = activity;
    }

    // Return true if the preference has the specified key but not the value.
    private static boolean notSame(ListPreference pref, String key, String value) {
        return (key.equals(pref.getKey()) && !value.equals(pref.getValue()));
    }

    // Return true if the preference has the specified key and the value.
    private static boolean same(ListPreference pref, String key, String value) {
        return (key.equals(pref.getKey()) && value.equals(pref.getValue()));
    }

    public void initialize(PreferenceGroup group) {
        super.initialize(group);
        mListSubMenu = null;
        mListMenu = null;
        mPopupStatus = POPUP_NONE;

        mOtherKeys1 = new String[]{
                CameraSettings.KEY_FLASH_MODE,
                CameraSettings.KEY_CAMERA2,
                CameraSettings.KEY_DUAL_CAMERA
        };

        mOtherKeys2 = new String[]{
                CameraSettings.KEY_FLASH_MODE,
                CameraSettings.KEY_CAMERA2,
                CameraSettings.KEY_DUAL_CAMERA
        };

    }

    @Override
    // Hit when an item in a popup gets selected
    public void onListPrefChanged(ListPreference pref) {
        animateFadeOut(mListSubMenu, 2);
        onSettingChanged(pref);
        ((ListMenu) mListMenu).resetHighlight();
    }

    public boolean handleBackKey() {
        if (mPopupStatus == POPUP_NONE)
            return false;
        if (mPopupStatus == POPUP_FIRST_LEVEL) {
            animateSlideOut(mListMenu, 1);
        } else if (mPopupStatus == POPUP_SECOND_LEVEL) {
            animateFadeOut(mListSubMenu, 2);
            ((ListMenu) mListMenu).resetHighlight();
        }
        return true;
    }

    public void tryToCloseSubList() {
        if (mListMenu != null)
            ((ListMenu) mListMenu).resetHighlight();

        if (mPopupStatus == POPUP_SECOND_LEVEL) {
            mUI.dismissLevel2();
            mPopupStatus = POPUP_FIRST_LEVEL;
        }
    }

    private void animateFadeOut(final ListView v, final int level) {
        if (v == null || mPopupStatus == POPUP_IN_ANIMATION_FADE)
            return;
        mPopupStatus = POPUP_IN_ANIMATION_FADE;

        ViewPropertyAnimator vp = v.animate();
        vp.alpha(0f).setDuration(ANIMATION_DURATION);
        vp.setListener(new AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {
            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }

            @Override
            public void onAnimationEnd(Animator animation) {
                if (level == 1) {
                    mUI.dismissLevel1();
                    initializePopup();
                    mPopupStatus = POPUP_NONE;
                    mUI.cleanupListview();
                } else if (level == 2) {
                    mUI.dismissLevel2();
                    mPopupStatus = POPUP_FIRST_LEVEL;
                }
            }

            @Override
            public void onAnimationCancel(Animator animation) {
                if (level == 1) {
                    mUI.dismissLevel1();
                    initializePopup();
                    mPopupStatus = POPUP_NONE;
                    mUI.cleanupListview();
                } else if (level == 2) {
                    mUI.dismissLevel2();
                    mPopupStatus = POPUP_FIRST_LEVEL;
                }

            }
        });
        vp.start();
    }

    private void animateSlideOut(final ListView v, final int level) {
        if (v == null || mPopupStatus == POPUP_IN_ANIMATION_SLIDE)
            return;
        mPopupStatus = POPUP_IN_ANIMATION_SLIDE;

        ViewPropertyAnimator vp = v.animate();
        if (View.LAYOUT_DIRECTION_RTL == TextUtils
                .getLayoutDirectionFromLocale(Locale.getDefault())) {
            switch (mUI.getOrientation()) {
                case 0:
                    vp.translationXBy(v.getWidth());
                    break;
                case 90:
                    vp.translationYBy(-2 * v.getHeight());
                    break;
                case 180:
                    vp.translationXBy(-2 * v.getWidth());
                    break;
                case 270:
                    vp.translationYBy(v.getHeight());
                    break;
            }
        } else {
            switch (mUI.getOrientation()) {
                case 0:
                    vp.translationXBy(-v.getWidth());
                    break;
                case 90:
                    vp.translationYBy(2 * v.getHeight());
                    break;
                case 180:
                    vp.translationXBy(2 * v.getWidth());
                    break;
                case 270:
                    vp.translationYBy(-v.getHeight());
                    break;
            }
        }
        vp.setListener(new AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {
            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }

            @Override
            public void onAnimationEnd(Animator animation) {
                if (level == 1) {
                    mUI.dismissLevel1();
                    initializePopup();
                    mPopupStatus = POPUP_NONE;
                    mUI.cleanupListview();
                } else if (level == 2) {
                    mUI.dismissLevel2();
                    mPopupStatus = POPUP_FIRST_LEVEL;
                }
            }

            @Override
            public void onAnimationCancel(Animator animation) {
                if (level == 1) {
                    mUI.dismissLevel1();
                    initializePopup();
                    mPopupStatus = POPUP_NONE;
                    mUI.cleanupListview();
                } else if (level == 2) {
                    mUI.dismissLevel2();
                    mPopupStatus = POPUP_FIRST_LEVEL;
                }

            }
        });
        vp.setDuration(ANIMATION_DURATION).start();
    }

    public void animateFadeIn(final ListView v) {
        ViewPropertyAnimator vp = v.animate();
        vp.alpha(0.85f).setDuration(ANIMATION_DURATION);
        vp.start();
    }

    public void animateSlideIn(final View v, int delta, boolean forcePortrait) {
        int orientation = mUI.getOrientation();
        if (!forcePortrait)
            orientation = 0;

        ViewPropertyAnimator vp = v.animate();
        float dest;
        if (View.LAYOUT_DIRECTION_RTL == TextUtils
                .getLayoutDirectionFromLocale(Locale.getDefault())) {
            switch (orientation) {
                case 0:
                    dest = v.getX();
                    v.setX(-(dest - delta));
                    vp.translationX(dest);
                    break;
                case 90:
                    dest = v.getY();
                    v.setY(-(dest + delta));
                    vp.translationY(dest);
                    break;
                case 180:
                    dest = v.getX();
                    v.setX(-(dest + delta));
                    vp.translationX(dest);
                    break;
                case 270:
                    dest = v.getY();
                    v.setY(-(dest - delta));
                    vp.translationY(dest);
                    break;
            }
        } else {
            switch (orientation) {
                case 0:
                    dest = v.getX();
                    v.setX(dest - delta);
                    vp.translationX(dest);
                    break;
                case 90:
                    dest = v.getY();
                    v.setY(dest + delta);
                    vp.translationY(dest);
                    break;
                case 180:
                    dest = v.getX();
                    v.setX(dest + delta);
                    vp.translationX(dest);
                    break;
                case 270:
                    dest = v.getY();
                    v.setY(dest - delta);
                    vp.translationY(dest);
                    break;
            }
        }
        vp.setDuration(ANIMATION_DURATION).start();
    }

    public boolean isOverMenu(MotionEvent ev) {
        if (mPopupStatus == POPUP_NONE
                || mPopupStatus == POPUP_IN_ANIMATION_SLIDE
                || mPopupStatus == POPUP_IN_ANIMATION_FADE)
            return false;
        if (mUI.getMenuLayout() == null)
            return false;
        Rect rec = new Rect();
        mUI.getMenuLayout().getChildAt(0).getHitRect(rec);
        return rec.contains((int) ev.getX(), (int) ev.getY());
    }

    public boolean isOverPreviewMenu(MotionEvent ev) {
        return false;
    }

    public boolean isMenuBeingShown() {
        return mPopupStatus != POPUP_NONE;
    }

    public boolean isMenuBeingAnimated() {
        return mPopupStatus == POPUP_IN_ANIMATION_SLIDE || mPopupStatus == POPUP_IN_ANIMATION_FADE;
    }

    public boolean isPreviewMenuBeingShown() {
        return false;
    }

    public boolean isPreviewMenuBeingAnimated() {
        return false;
    }

    public boolean sendTouchToPreviewMenu(MotionEvent ev) {
        return mUI.sendTouchToPreviewMenu(ev);
    }

    public boolean sendTouchToMenu(MotionEvent ev) {
        return mUI.sendTouchToMenu(ev);
    }

    @Override
    public void overrideSettings(final String... keyvalues) {
        super.overrideSettings(keyvalues);
        if ((mListMenu == null))
            initializePopup();
        mListMenu.overrideSettings(keyvalues);
    }

    protected void initializePopup() {
        LayoutInflater inflater = (LayoutInflater) mActivity.getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);
        ListMenu listMenu = (ListMenu) inflater.inflate(
                R.layout.list_menu, null, false);

        listMenu.setSettingChangedListener(this);

        String[] keys = mOtherKeys1;
        if (mActivity.isDeveloperMenuEnabled())
            keys = mOtherKeys2;
        listMenu.initialize(mPreferenceGroup, keys);
        mListMenu = listMenu;

        if (mListener != null) {
            mListener.onSharedPreferenceChanged();
        }
    }

    public void initSwitchItem(final String prefKey, View switcher) {
        final IconListPreference pref =
                (IconListPreference) mPreferenceGroup.findPreference(prefKey);
        if (pref == null)
            return;

        int[] iconIds = pref.getLargeIconIds();
        int resid = -1;
        int index = pref.findIndexOfValue(pref.getValue());
        if (!pref.getUseSingleIcon() && iconIds != null) {
            // Each entry has a corresponding icon.
            resid = iconIds[index];
        } else {
            // The preference only has a single icon to represent it.
            resid = pref.getSingleIcon();
        }
        ((ImageView) switcher).setImageResource(resid);
        switcher.setVisibility(View.VISIBLE);
        mPreferences.add(pref);
        mPreferenceMap.put(pref, switcher);
        switcher.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                IconListPreference pref = (IconListPreference) mPreferenceGroup
                        .findPreference(prefKey);
                if (pref == null)
                    return;
                int index = pref.findIndexOfValue(pref.getValue());
                CharSequence[] values = pref.getEntryValues();
                index = (index + 1) % values.length;
                pref.setValueIndex(index);
                ((ImageView) v).setImageResource(
                        ((IconListPreference) pref).getLargeIconIds()[index]);
                if (prefKey.equals(CameraSettings.KEY_CAMERA_ID))
                    mListener.onCameraPickerClicked(index);
                reloadPreference(pref);
                onSettingChanged(pref);
            }
        });
    }

    public void openFirstLevel() {
        if (isMenuBeingShown() || CameraControls.isAnimating()) {
            return;
        }
        if (mListMenu == null || mPopupStatus != POPUP_FIRST_LEVEL) {
            initializePopup();
            mPopupStatus = POPUP_FIRST_LEVEL;
        }
        mUI.showPopup(mListMenu, 1, true);
    }

    @Override
    // Hit when an item in the first-level popup gets selected, then bring up
    // the second-level popup
    public void onPreferenceClicked(ListPreference pref) {
        onPreferenceClicked(pref, 0);
    }

    public void onPreferenceClicked(ListPreference pref, int y) {
        if (!mActivity.isDeveloperMenuEnabled()) {
            if (pref.getKey().equals(CameraSettings.KEY_REDEYE_REDUCTION)) {
                privateCounter++;
                if (privateCounter >= DEVELOPER_MENU_TOUCH_COUNT) {
                    mActivity.enableDeveloperMenu();
                    SharedPreferences prefs = PreferenceManager
                            .getDefaultSharedPreferences(mActivity);
                    prefs.edit().putBoolean(CameraSettings.KEY_DEVELOPER_MENU, true).apply();
                    RotateTextToast.makeText(mActivity,
                            "Camera developer option is enabled now", Toast.LENGTH_SHORT).show();
                }
            } else {
                privateCounter = 0;
            }
        }

        LayoutInflater inflater = (LayoutInflater) mActivity.getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);
        ListSubMenu basic = (ListSubMenu) inflater.inflate(
                R.layout.list_sub_menu, null, false);
        basic.initialize(pref, y);
        basic.setSettingChangedListener(this);
        basic.setAlpha(0f);
        mListSubMenu = basic;
        mUI.removeLevel2();
        if (mPopupStatus == POPUP_SECOND_LEVEL) {
            mUI.showPopup(mListSubMenu, 2, false);
        } else {
            mUI.showPopup(mListSubMenu, 2, true);
        }
        mPopupStatus = POPUP_SECOND_LEVEL;
    }

    public void onListMenuTouched() {
        mUI.removeLevel2();
    }

    public void removeAllView() {
        if (mUI != null)
            mUI.removeLevel2();

        if (mListMenu != null) {
            mUI.dismissLevel1();
            mPopupStatus = POPUP_NONE;
        }
        mUI.cleanupListview();
    }

    public void closeView() {
        if (mUI != null)
            mUI.removeLevel2();

        if (mListMenu != null && mPopupStatus != POPUP_NONE)
            animateSlideOut(mListMenu, 1);
    }

    public void setPreference(String key, String value) {
        ListPreference pref = mPreferenceGroup.findPreference(key);
        if (pref != null && !value.equals(pref.getValue())) {
            pref.setValue(value);
            reloadPreferences();
        }
    }

    @Override
    public void onSettingChanged(ListPreference pref) {
        super.onSettingChanged(pref);
        if (same(pref, CameraSettings.KEY_CAMERA2, "enable")) {
            SharedPreferences prefs = PreferenceManager
                    .getDefaultSharedPreferences(mActivity);
            prefs.edit().putBoolean(CameraSettings.KEY_CAMERA2, true).apply();
            CameraActivity.CAMERA_2_ON = true;
            mActivity.onModuleSelected(ModuleSwitcher.CAPTURE_MODULE_INDEX);
        } else if (notSame(pref, CameraSettings.KEY_CAMERA2, "enable")) {
            SharedPreferences prefs = PreferenceManager
                    .getDefaultSharedPreferences(mActivity);
            prefs.edit().putBoolean(CameraSettings.KEY_CAMERA2, false).apply();
            CameraActivity.CAMERA_2_ON = false;
            mActivity.onModuleSelected(ModuleSwitcher.PHOTO_MODULE_INDEX);
        }
    }

    public int getOrientation() {
        return mUI == null ? 0 : mUI.getOrientation();
    }
}