/*
 * Copyright (C) 2011 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.settings.device;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.preference.DialogPreference;
import android.preference.PreferenceManager;
import android.util.AttributeSet;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Button;
import android.util.Log;

/**
 * Special preference type that allows configuration of both the ring volume and
 * notification volume.
 */
public class ColorHackPresets extends DialogPreference implements OnClickListener {

    private static final String TAG = "PRESETS...";

    private static final String[] FILE_PATH_GAMMA = new String[] {
            "/sys/class/misc/samoled_color/red_v1_offset",
            "/sys/class/misc/samoled_color/green_v1_offset",
            "/sys/class/misc/samoled_color/blue_v1_offset",
            "/sys/devices/platform/omapdss/manager0/gamma"
    };

    private static final String[] FILE_PATH_MULTI = new String[] {
            "/sys/class/misc/samoled_color/red_multiplier",
            "/sys/class/misc/samoled_color/green_multiplier",
            "/sys/class/misc/samoled_color/blue_multiplier"
    };

    // Track instances to know when to restore original color
    // (when the orientation changes, a new dialog is created before the old one
    // is destroyed)
    private static int sInstances = 0;

    // Align MAX_VALUE with Voodoo Control settings
    private static final int MAX_VALUE = Integer.MAX_VALUE - 2;

    public ColorHackPresets(Context context, AttributeSet attrs) {
        super(context, attrs);

        setDialogLayoutResource(R.layout.preference_colorgamma_presets);
    }

    @Override
    protected void onBindDialogView(View view) {
        super.onBindDialogView(view);

        sInstances++;

        SetupButtonClickListeners(view);
    }

    private void SetupButtonClickListeners(View view) {
        Button[] mPresets = new Button[6];

        mPresets[0] = (Button)view.findViewById(R.id.btnPreset1);
        mPresets[1] = (Button)view.findViewById(R.id.btnPreset2);
        mPresets[2] = (Button)view.findViewById(R.id.btnPreset3);
        mPresets[3] = (Button)view.findViewById(R.id.btnPreset4);
        mPresets[4] = (Button)view.findViewById(R.id.btnPreset5);
        mPresets[5] = (Button)view.findViewById(R.id.btnPreset6);
        for (int i = 0; i < 6; i++) {
            mPresets[i].setOnClickListener(this);
        }
    }

    @Override
    protected void onDialogClosed(boolean positiveResult) {
        super.onDialogClosed(positiveResult);

        sInstances--;

    }

    /**
     * Restore screen color tuning from SharedPreferences. (Write to kernel.)
     * 
     * @param context The context to read the SharedPreferences from
     */
    public static void restore(Context context) {
        if (!isSupported()) {
            return;
        }

    }

    /**
     * Check whether the running kernel supports color tuning or not.
     * 
     * @return Whether color tuning is supported or not
     */
    public static boolean isSupported() {
        boolean supported = true;
        for (String filePath : FILE_PATH_GAMMA) {
            if (!Utils.fileExists(filePath)) {
                supported = false;
            }
        }

        return supported;
    }

    public void onClick(View v) {
        switch(v.getId()){
            case R.id.btnPreset1:
                    Preset1();
                    break;
            case R.id.btnPreset2:
                    Preset2();
                    break;
            case R.id.btnPreset3:
                    Preset3();
                    break;
            case R.id.btnPreset4:
                    Preset4();
                    break;
            case R.id.btnPreset5:
                    Preset5();
                    break;
            case R.id.btnPreset6:
                    Preset6();
                    break;
        }
    }

    private void WriteMultiplier(Double fValue , int iPos) {
        int iValue = (int) ((double) MAX_VALUE * fValue);
        Utils.writeColor(FILE_PATH_MULTI[iPos], iValue);
        Log.i(TAG,"KalimAz: Multiplier: " + iPos+ " Value " + iValue );
    }

    private void WriteGamma(int iValue , int iPos) {
        Utils.writeValue(FILE_PATH_GAMMA[iPos], String.valueOf((long) iValue));
        Log.i(TAG,"KalimAz: Gamma: " + iPos+ " Value " + iValue );
    }

    private void Preset1() {
        WriteMultiplier(1.0, 0);
        WriteMultiplier(1.0, 1);
        WriteMultiplier(1.0, 2);
        WriteGamma(0, 0);
        WriteGamma(0, 1);
        WriteGamma(0, 2);
        WriteGamma(0, 3);
    }

    private void Preset2() {
        WriteMultiplier(0.8575, 0);
        WriteMultiplier(0.8575, 1);
        WriteMultiplier(0.8575, 2);
        WriteGamma(-12, 0);
        WriteGamma(12, 1);
        WriteGamma(-12, 2);
    }

    private void Preset3() {
        WriteMultiplier(0.458602179, 0);
        WriteMultiplier(0.6311828147, 1);
        WriteMultiplier(0.82258, 2);
        WriteGamma(-31, 0);
        WriteGamma(-18, 1);
        WriteGamma(-0, 2);
    }

    private void Preset4() {
        WriteMultiplier(0.7231, 0);
        WriteMultiplier(0.7016, 1);
        WriteMultiplier(0.6532, 2);
        WriteGamma(-31, 0);
        WriteGamma(-30, 1);
        WriteGamma(-14, 2);
    }

    private void Preset5() {
        WriteMultiplier(0.6666, 0);
        WriteMultiplier(0.6666, 1);
        WriteMultiplier(0.8333, 2);
        WriteGamma(-44, 0);
        WriteGamma(-44, 1);
        WriteGamma(-7, 2);
    }

    private void Preset6() {
        WriteMultiplier(1.0, 0);
        WriteMultiplier(0.7688, 1);
        WriteMultiplier(0.2473, 2);
        WriteGamma(-57, 0);
        WriteGamma(-75, 1);
        WriteGamma(45, 2);
    }

}