Simple-Notes/app/src/main/kotlin/com/simplemobiletools/notes/activities/WidgetConfigureActivity.kt

package com.simplemobiletools.notes.activities

import android.app.Activity
import android.appwidget.AppWidgetManager
import android.content.Intent
import android.graphics.Color
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.util.TypedValue
import android.widget.RemoteViews
import android.widget.SeekBar
import com.simplemobiletools.notes.R
import com.simplemobiletools.notes.extensions.getTextSize
import com.simplemobiletools.notes.helpers.Config
import com.simplemobiletools.notes.helpers.MyWidgetProvider
import kotlinx.android.synthetic.main.widget_config.*
import yuku.ambilwarna.AmbilWarnaDialog

class WidgetConfigureActivity : AppCompatActivity() {
    private var mBgAlpha = 0f
    private var mWidgetId = 0
    private var mBgColor = 0
    private var mBgColorWithoutTransparency = 0
    private var mTextColor = 0

    public override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setResult(RESULT_CANCELED)
        setContentView(R.layout.widget_config)
        initVariables()

        val extras = intent.extras
        if (extras != null)
            mWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID)

        if (mWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID)
            finish()

        config_save.setOnClickListener { saveConfig() }
        config_bg_color.setOnClickListener { pickBackgroundColor() }
        config_text_color.setOnClickListener { pickTextColor() }
    }

    override fun onResume() {
        super.onResume()
        notes_view.setTextSize(TypedValue.COMPLEX_UNIT_PX, applicationContext.getTextSize())
    }

    private fun initVariables() {
        val config = Config.newInstance(this)
        mBgColor = config.widgetBgColor
        if (mBgColor == 1) {
            mBgColor = Color.BLACK
            mBgAlpha = .2f
        } else {
            mBgAlpha = Color.alpha(mBgColor) / 255.toFloat()
        }

        mBgColorWithoutTransparency = Color.rgb(Color.red(mBgColor), Color.green(mBgColor), Color.blue(mBgColor))
        config_bg_seekbar.apply {
            setOnSeekBarChangeListener(bgSeekbarChangeListener)
            progress = (mBgAlpha * 100).toInt()
        }
        updateBackgroundColor()

        mTextColor = config.widgetTextColor
        updateTextColor()
    }

    fun saveConfig() {
        val views = RemoteViews(packageName, R.layout.activity_main)
        views.setInt(R.id.notes_view, "setBackgroundColor", mBgColor)
        AppWidgetManager.getInstance(this).updateAppWidget(mWidgetId, views)

        storeWidgetBackground()
        requestWidgetUpdate()

        Intent().apply {
            putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mWidgetId)
            setResult(Activity.RESULT_OK, this)
        }
        finish()
    }

    private fun storeWidgetBackground() {
        Config.newInstance(this).apply {
            widgetBgColor = mBgColor
            widgetTextColor = mTextColor
        }
    }

    private fun requestWidgetUpdate() {
        Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE, null, this, MyWidgetProvider::class.java).apply {
            putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, intArrayOf(mWidgetId))
            sendBroadcast(this)
        }
    }

    private fun updateBackgroundColor() {
        mBgColor = adjustAlpha(mBgColorWithoutTransparency, mBgAlpha)
        notes_view.setBackgroundColor(mBgColor)
        config_bg_color.setBackgroundColor(mBgColor)
        config_save.setBackgroundColor(mBgColor)
    }

    private fun updateTextColor() {
        config_text_color.setBackgroundColor(mTextColor)
        config_save.setTextColor(mTextColor)
        notes_view.setTextColor(mTextColor)
    }

    fun pickBackgroundColor() {
        AmbilWarnaDialog(this, mBgColorWithoutTransparency, object : AmbilWarnaDialog.OnAmbilWarnaListener {
            override fun onCancel(dialog: AmbilWarnaDialog) {
            }

            override fun onOk(dialog: AmbilWarnaDialog, color: Int) {
                mBgColorWithoutTransparency = color
                updateBackgroundColor()
            }
        }).show()
    }

    fun pickTextColor() {
        AmbilWarnaDialog(this, mTextColor, object : AmbilWarnaDialog.OnAmbilWarnaListener {
            override fun onCancel(dialog: AmbilWarnaDialog) {
            }

            override fun onOk(dialog: AmbilWarnaDialog, color: Int) {
                mTextColor = color
                updateTextColor()
            }
        }).show()
    }

    private val bgSeekbarChangeListener = object : SeekBar.OnSeekBarChangeListener {
        override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
            mBgAlpha = progress.toFloat() / 100.toFloat()
            updateBackgroundColor()
        }

        override fun onStartTrackingTouch(seekBar: SeekBar) {

        }

        override fun onStopTrackingTouch(seekBar: SeekBar) {

        }
    }

    private fun adjustAlpha(color: Int, factor: Float): Int {
        val alpha = Math.round(Color.alpha(color) * factor)
        val red = Color.red(color)
        val green = Color.green(color)
        val blue = Color.blue(color)
        return Color.argb(alpha, red, green, blue)
    }
}