/*
 * Copyright (C) 2013 The CyanogenMod 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.cyanogenmod.setupwizard.setup;

import android.app.Fragment;
import android.app.FragmentManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ThemeUtils;
import android.content.res.ThemeConfig;
import android.content.res.ThemeManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.RemoteException;
import android.preference.PreferenceManager;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.Log;
import android.view.IWindowManager;
import android.view.View;
import android.view.WindowManagerGlobal;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;

import com.cyanogenmod.setupwizard.R;
import com.cyanogenmod.setupwizard.SetupWizardApp;
import com.cyanogenmod.setupwizard.cmstats.SetupStats;
import com.cyanogenmod.setupwizard.ui.SetupPageFragment;
import com.cyanogenmod.setupwizard.ui.WebViewDialogFragment;
import com.cyanogenmod.setupwizard.util.SetupWizardUtils;
import com.cyanogenmod.setupwizard.util.WhisperPushUtils;

import cyanogenmod.providers.CMSettings;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;

import cyanogenmod.hardware.CMHardwareManager;

public class CyanogenSettingsPage extends SetupPage {

    public static final String TAG = "CyanogenSettingsPage";

    public static final String KEY_SEND_METRICS = "send_metrics";
    public static final String KEY_REGISTER_WHISPERPUSH = "register";
    public static final String KEY_ENABLE_NAV_KEYS = "enable_nav_keys";
    public static final String KEY_APPLY_DEFAULT_THEME = "apply_default_theme";

    public static final String SETTING_METRICS = "settings.cyanogen.allow_metrics";
    public static final String PRIVACY_POLICY_URI = "https://cyngn.com/oobe-legal?hideHeader=1";

    private static final String WHISPERPUSH_PACKAGE = "org.whispersystems.whisperpush";

    public CyanogenSettingsPage(Context context, SetupDataCallbacks callbacks) {
        super(context, callbacks);
    }

    @Override
    public Fragment getFragment(FragmentManager fragmentManager, int action) {
        Fragment fragment = fragmentManager.findFragmentByTag(getKey());
        if (fragment == null) {
            Bundle args = new Bundle();
            args.putString(Page.KEY_PAGE_ARGUMENT, getKey());
            args.putInt(Page.KEY_PAGE_ACTION, action);
            fragment = new CyanogenSettingsFragment();
            fragment.setArguments(args);
        }
        return fragment;
    }

    @Override
    public String getKey() {
        return TAG;
    }

    @Override
    public int getTitleResId() {
        return R.string.setup_services;
    }

    private static void writeDisableNavkeysOption(Context context, boolean enabled) {
        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        /*final int defaultBrightness = context.getResources().getInteger(
                com.android.internal.R.integer.config_buttonBrightnessSettingDefault);*/

        /*Settings.Secure.putInt(context.getContentResolver(),
                Settings.Secure.DEV_FORCE_SHOW_NAVBAR, enabled ? 1 : 0);
        final CMHardwareManager hardware = CMHardwareManager.getInstance(context);
        hardware.set(CMHardwareManager.FEATURE_KEY_DISABLE, enabled);*/

        /* Save/restore button timeouts to disable them in softkey mode */
        SharedPreferences.Editor editor = prefs.edit();

        if (enabled) {
            int currentBrightness = CMSettings.Secure.getInt(context.getContentResolver(),
                    CMSettings.Secure.BUTTON_BRIGHTNESS, 100);
            if (!prefs.contains("pre_navbar_button_backlight")) {
                editor.putInt("pre_navbar_button_backlight", currentBrightness);
            }
            CMSettings.Secure.putInt(context.getContentResolver(),
                    CMSettings.Secure.BUTTON_BRIGHTNESS, 0);
        } else {
            int oldBright = prefs.getInt("pre_navbar_button_backlight", -1);
            if (oldBright != -1) {
                CMSettings.Secure.putInt(context.getContentResolver(),
                        CMSettings.Secure.BUTTON_BRIGHTNESS, oldBright);
                editor.remove("pre_navbar_button_backlight");
            }
        }
        editor.commit();
    }

    @Override
    public void onFinishSetup() {
        getCallbacks().addFinishRunnable(new Runnable() {
            @Override
            public void run() {
                if (getData().containsKey(KEY_ENABLE_NAV_KEYS)) {
                    SetupStats.addEvent(SetupStats.Categories.SETTING_CHANGED,
                            SetupStats.Action.ENABLE_NAV_KEYS,
                            SetupStats.Label.CHECKED,
                            String.valueOf(getData().getBoolean(KEY_ENABLE_NAV_KEYS)));
                    writeDisableNavkeysOption(mContext, getData().getBoolean(KEY_ENABLE_NAV_KEYS));
                }
            }
        });
        handleWhisperPushRegistration();
        handleEnableMetrics();
        handleDefaultThemeSetup();
    }

    private void handleWhisperPushRegistration() {
        Bundle privacyData = getData();
        if (privacyData != null &&
                privacyData.containsKey(KEY_REGISTER_WHISPERPUSH) &&
                privacyData.getBoolean(KEY_REGISTER_WHISPERPUSH)) {
            SetupStats.addEvent(SetupStats.Categories.SETTING_CHANGED,
                    SetupStats.Action.USE_SECURE_SMS,
                    SetupStats.Label.CHECKED,
                    String.valueOf(privacyData.getBoolean(KEY_REGISTER_WHISPERPUSH)));
            Log.i(TAG, "Registering with WhisperPush");
            WhisperPushUtils.startRegistration(mContext);
        }
    }

    private void handleEnableMetrics() {
        Bundle privacyData = getData();
        if (privacyData != null
                && privacyData.containsKey(KEY_SEND_METRICS)) {
            CMSettings.Secure.putInt(mContext.getContentResolver(),
                    CMSettings.Secure.STATS_COLLECTION, privacyData.getBoolean(KEY_SEND_METRICS)
                            ? 1 : 0);
        }
    }

    private void handleDefaultThemeSetup() {
        Bundle privacyData = getData();
        if (!SetupWizardUtils.getDefaultThemePackageName(mContext).equals(
                ThemeConfig.SYSTEM_DEFAULT) && privacyData != null &&
                privacyData.getBoolean(KEY_APPLY_DEFAULT_THEME)) {
            SetupStats.addEvent(SetupStats.Categories.SETTING_CHANGED,
                    SetupStats.Action.APPLY_CUSTOM_THEME,
                    SetupStats.Label.CHECKED,
                    String.valueOf(privacyData.getBoolean(KEY_APPLY_DEFAULT_THEME)));
            Log.i(TAG, "Applying default theme");
            final ThemeManager tm = (ThemeManager) mContext.getSystemService(Context.THEME_SERVICE);
            tm.applyDefaultTheme();

        } else {
            getCallbacks().finishSetup();
        }
    }

    private static boolean hideKeyDisabler(Context ctx) {
        final CMHardwareManager hardware = CMHardwareManager.getInstance(ctx);
        return !hardware.isSupported(CMHardwareManager.FEATURE_KEY_DISABLE);
    }

    private static boolean isKeyDisablerActive(Context ctx) {
        final CMHardwareManager hardware = CMHardwareManager.getInstance(ctx);
        return hardware.get(CMHardwareManager.FEATURE_KEY_DISABLE);
    }

    private static boolean hideWhisperPush(Context context) {
        final int playServicesAvailable = GooglePlayServicesUtil
                .isGooglePlayServicesAvailable(context);
        try {
            PackageInfo pi = context.getPackageManager().getPackageInfo(WHISPERPUSH_PACKAGE, 0);
            if (pi == null) {
                return true;
            }
        } catch (PackageManager.NameNotFoundException e) {
            return true;
        }
        return playServicesAvailable != ConnectionResult.SUCCESS
                || !SetupWizardUtils.hasTelephony(context)
                || (SetupWizardUtils.hasTelephony(context) &&
                SetupWizardUtils.isSimMissing(context));
    }

    private static boolean hideThemeSwitch(Context context) {
        return SetupWizardUtils.getDefaultThemePackageName(context)
                               .equals(ThemeConfig.SYSTEM_DEFAULT);
    }

    public static class CyanogenSettingsFragment extends SetupPageFragment {

        private View mKillSwitchView;
        private TextView mKillSwitchTitle;
        private ImageView mKillSwitchStatus;
        private View mMetricsRow;
        private View mDefaultThemeRow;
        private View mNavKeysRow;
        private View mSecureSmsRow;
        private CheckBox mMetrics;
        private CheckBox mDefaultTheme;
        private CheckBox mNavKeys;
        private CheckBox mSecureSms;

        private boolean mHideNavKeysRow = false;
        private boolean mHideThemeRow = false;
        private boolean mHideSmsRow = false;


        private View.OnClickListener mMetricsClickListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                boolean checked = !mMetrics.isChecked();
                mMetrics.setChecked(checked);
                mPage.getData().putBoolean(KEY_SEND_METRICS, checked);
            }
        };

        private View.OnClickListener mDefaultThemeClickListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                boolean checked = !mDefaultTheme.isChecked();
                mDefaultTheme.setChecked(checked);
                mPage.getData().putBoolean(KEY_APPLY_DEFAULT_THEME, checked);
            }
        };

        private View.OnClickListener mNavKeysClickListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                boolean checked = !mNavKeys.isChecked();
                mNavKeys.setChecked(checked);
                mPage.getData().putBoolean(KEY_ENABLE_NAV_KEYS, checked);
            }
        };

        private View.OnClickListener mSecureSmsClickListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                boolean checked = !mSecureSms.isChecked();
                mSecureSms.setChecked(checked);
                mPage.getData().putBoolean(KEY_REGISTER_WHISPERPUSH, checked);
            }
        };

        @Override
        protected void initializePage() {
            String privacy_policy = getString(R.string.services_privacy_policy);
            String policySummary = getString(R.string.services_explanation, privacy_policy);
            SpannableString ss = new SpannableString(policySummary);
            ClickableSpan clickableSpan = new ClickableSpan() {
                @Override
                public void onClick(View textView) {
                    final Intent intent = new Intent(SetupWizardApp.ACTION_VIEW_LEGAL);
                    intent.setData(Uri.parse(PRIVACY_POLICY_URI));
                    try {
                        getActivity().startActivity(intent);
                    } catch (Exception e) {
                        Log.e(TAG, "Unable to start activity " + intent.toString(), e);
                    }
                }
            };
            ss.setSpan(clickableSpan,
                    policySummary.length() - privacy_policy.length() - 1,
                    policySummary.length() - 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            TextView privacyPolicy = (TextView) mRootView.findViewById(R.id.privacy_policy);
            privacyPolicy.setMovementMethod(LinkMovementMethod.getInstance());
            privacyPolicy.setText(ss);

            mKillSwitchView = mRootView.findViewById(R.id.killswitch);
            mKillSwitchTitle = (TextView)mRootView.findViewById(R.id.killswitch_title);
            mKillSwitchStatus = (ImageView)mRootView.findViewById(R.id.killswitch_check);
            if (hideKillSwitch()) {
                mKillSwitchView.setVisibility(View.GONE);
            } else {
                if (SetupWizardUtils.isDeviceLocked()) {
                    mKillSwitchTitle.setEnabled(true);
                    mKillSwitchStatus.setImageResource(R.drawable.tick);
                } else {
                    mKillSwitchTitle.setEnabled(false);
                    mKillSwitchStatus.setImageResource(R.drawable.cross);
                }
            }

            mMetricsRow = mRootView.findViewById(R.id.metrics);
            mMetricsRow.setOnClickListener(mMetricsClickListener);
            String metricsHelpImproveCM =
                    getString(R.string.services_help_improve_cm, getString(R.string.os_name));
            String metricsSummary = getString(R.string.services_metrics_label,
                    metricsHelpImproveCM, getString(R.string.os_name));
            final SpannableStringBuilder metricsSpan = new SpannableStringBuilder(metricsSummary);
            metricsSpan.setSpan(new android.text.style.StyleSpan(android.graphics.Typeface.BOLD),
                    0, metricsHelpImproveCM.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            TextView metrics = (TextView) mRootView.findViewById(R.id.enable_metrics_summary);
            metrics.setText(metricsSpan);
            mMetrics = (CheckBox) mRootView.findViewById(R.id.enable_metrics_checkbox);

            mDefaultThemeRow = mRootView.findViewById(R.id.theme);
            mHideThemeRow = hideThemeSwitch(getActivity());
            if (mHideThemeRow) {
                mDefaultThemeRow.setVisibility(View.GONE);
            } else {
                mDefaultThemeRow.setOnClickListener(mDefaultThemeClickListener);
                String defaultTheme =
                        getString(R.string.services_apply_theme,
                                getString(R.string.default_theme_name));
                String defaultThemeSummary = getString(R.string.services_apply_theme_label,
                        defaultTheme);
                final SpannableStringBuilder themeSpan =
                        new SpannableStringBuilder(defaultThemeSummary);
                themeSpan.setSpan(new android.text.style.StyleSpan(android.graphics.Typeface.BOLD),
                        0, defaultTheme.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                TextView theme = (TextView) mRootView.findViewById(R.id.enable_theme_summary);
                theme.setText(themeSpan);
                mDefaultTheme = (CheckBox) mRootView.findViewById(R.id.enable_theme_checkbox);
            }

            mNavKeysRow = mRootView.findViewById(R.id.nav_keys);
            mNavKeysRow.setOnClickListener(mNavKeysClickListener);
            mNavKeys = (CheckBox) mRootView.findViewById(R.id.nav_keys_checkbox);
            boolean needsNavBar = true;
            /*try {
                IWindowManager windowManager = WindowManagerGlobal.getWindowManagerService();
                needsNavBar = windowManager.needsNavigationBar();
            } catch (RemoteException e) {
            }*/
            mHideNavKeysRow = hideKeyDisabler(getActivity());
            if (mHideNavKeysRow || needsNavBar) {
                mNavKeysRow.setVisibility(View.GONE);
            } else {
                boolean navKeysDisabled =
                        isKeyDisablerActive(getActivity());
                mNavKeys.setChecked(navKeysDisabled);
            }

            mSecureSmsRow = mRootView.findViewById(R.id.secure_sms);
            mSecureSmsRow.setOnClickListener(mSecureSmsClickListener);
            String useSecureSms = getString(R.string.services_use_secure_sms);
            String secureSmsSummary = getString(R.string.services_secure_sms_label,
                    useSecureSms, getString(R.string.os_name));
            final SpannableStringBuilder secureSmsSpan =
                    new SpannableStringBuilder(secureSmsSummary);
            secureSmsSpan.setSpan(new android.text.style.StyleSpan(android.graphics.Typeface.BOLD),
                    0, useSecureSms.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            TextView secureSms = (TextView) mRootView.findViewById(R.id.secure_sms_summary);
            secureSms.setText(secureSmsSpan);
            mHideSmsRow = hideWhisperPush(getActivity());
            if (mHideSmsRow) {
                mSecureSmsRow.setVisibility(View.GONE);
            }
            mSecureSms = (CheckBox) mRootView.findViewById(R.id.secure_sms_checkbox);
        }

        @Override
        protected int getLayoutResource() {
            return R.layout.setup_cyanogen_services;
        }

        @Override
        public void onResume() {
            super.onResume();
            /*updateDisableNavkeysOption();*/
            updateMetricsOption();
            updateThemeOption();
            updateSmsOption();
        }

        private void updateMetricsOption() {
            final Bundle myPageBundle = mPage.getData();
            boolean metricsChecked =
                    !myPageBundle.containsKey(KEY_SEND_METRICS) || myPageBundle
                            .getBoolean(KEY_SEND_METRICS);
            mMetrics.setChecked(metricsChecked);
            myPageBundle.putBoolean(KEY_SEND_METRICS, metricsChecked);
        }

        private void updateThemeOption() {
            if (!mHideThemeRow) {
                final Bundle myPageBundle = mPage.getData();
                boolean themesChecked;
                if (myPageBundle.containsKey(KEY_APPLY_DEFAULT_THEME)) {
                    themesChecked = myPageBundle.getBoolean(KEY_APPLY_DEFAULT_THEME);
                } else {
                    themesChecked = getActivity().getResources().getBoolean(
                            R.bool.check_custom_theme_by_default);
                }
                mDefaultTheme.setChecked(themesChecked);
                myPageBundle.putBoolean(KEY_APPLY_DEFAULT_THEME, themesChecked);
            }
        }

        private void updateSmsOption() {
            if (!mHideSmsRow) {
                final Bundle myPageBundle = mPage.getData();
                boolean smsChecked = myPageBundle.containsKey(KEY_REGISTER_WHISPERPUSH) ?
                        myPageBundle.getBoolean(KEY_REGISTER_WHISPERPUSH) :
                        false;
                mSecureSms.setChecked(smsChecked);
                myPageBundle.putBoolean(KEY_REGISTER_WHISPERPUSH, smsChecked);
            }
        }

        /*private void updateDisableNavkeysOption() {
            if (!mHideNavKeysRow) {
                final Bundle myPageBundle = mPage.getData();
                boolean enabled = Settings.Secure.getInt(getActivity().getContentResolver(),
                        Settings.Secure.DEV_FORCE_SHOW_NAVBAR, 0) != 0;
                boolean checked = myPageBundle.containsKey(KEY_ENABLE_NAV_KEYS) ?
                        myPageBundle.getBoolean(KEY_ENABLE_NAV_KEYS) :
                        enabled;
                mNavKeys.setChecked(checked);
                myPageBundle.putBoolean(KEY_ENABLE_NAV_KEYS, checked);
            }
        }*/

        private static boolean hideKillSwitch() {
            return !SetupWizardUtils.hasKillSwitch();
        }

    }
}