package ani.dantotsu.widgets

import android.app.PendingIntent
import android.appwidget.AppWidgetManager
import android.appwidget.AppWidgetProvider
import android.content.Context
import android.content.Intent
import android.graphics.Bitmap
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.drawable.Drawable
import android.graphics.drawable.GradientDrawable
import android.net.Uri
import android.widget.RemoteViews
import androidx.core.content.ContextCompat
import androidx.core.content.res.ResourcesCompat
import ani.dantotsu.MainActivity
import ani.dantotsu.R

/**
 * Implementation of App Widget functionality.
 * App Widget Configuration implemented in [UpcomingWidgetConfigureActivity]
 */
class UpcomingWidget : AppWidgetProvider() {
    override fun onUpdate(
        context: Context,
        appWidgetManager: AppWidgetManager,
        appWidgetIds: IntArray
    ) {
        appWidgetIds.forEach { appWidgetId ->
            val rv = updateAppWidget(context, appWidgetId)
            appWidgetManager.updateAppWidget(appWidgetId, rv)
        }
        super.onUpdate(context, appWidgetManager, appWidgetIds)
    }

    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
        for (appWidgetId in appWidgetIds) {
            context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE).edit().clear().apply()
        }
        super.onDeleted(context, appWidgetIds)
    }

    override fun onEnabled(context: Context) {
        super.onEnabled(context)
    }

    override fun onDisabled(context: Context) {
        super.onDisabled(context)
    }


    companion object {
        fun updateAppWidget(
            context: Context,
            appWidgetId: Int,
        ): RemoteViews {
            val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
            val backgroundColor =
                prefs.getInt(PREF_BACKGROUND_COLOR, ContextCompat.getColor(context, R.color.theme))
            val backgroundFade = prefs.getInt(PREF_BACKGROUND_FADE, Color.GRAY)
            val titleTextColor = prefs.getInt(PREF_TITLE_TEXT_COLOR, Color.WHITE)
            val countdownTextColor = prefs.getInt(PREF_COUNTDOWN_TEXT_COLOR, Color.WHITE)

            val intent = Intent(context, UpcomingRemoteViewsService::class.java).apply {
                putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId)
                data = Uri.parse(toUri(Intent.URI_INTENT_SCHEME))
            }
            val gradientDrawable = ResourcesCompat.getDrawable(
                context.resources,
                R.drawable.gradient_background,
                null
            ) as GradientDrawable
            gradientDrawable.colors = intArrayOf(backgroundColor, backgroundFade)

            val intentTemplate = Intent(context, MainActivity::class.java)
            intentTemplate.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
            intentTemplate.putExtra("fromWidget", true)

            val views = RemoteViews(context.packageName, R.layout.upcoming_widget).apply {
                setImageViewBitmap(R.id.backgroundView, convertDrawableToBitmap(gradientDrawable))
                setTextColor(R.id.text_show_title, titleTextColor)
                setTextColor(R.id.text_show_countdown, countdownTextColor)
                setTextColor(R.id.widgetTitle, titleTextColor)
                setRemoteAdapter(R.id.widgetListView, intent)
                setEmptyView(R.id.widgetListView, R.id.empty_view)
                setPendingIntentTemplate(
                    R.id.widgetListView,
                    PendingIntent.getActivity(
                        context,
                        0,
                        intentTemplate,
                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_MUTABLE
                    )
                )
                setOnClickPendingIntent(
                    R.id.logoView,
                    PendingIntent.getActivity(
                        context,
                        1,
                        Intent(context, UpcomingWidgetConfigureActivity::class.java).apply {
                            putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId)
                        },
                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
                    )
                )
            }

            return views

        }

        private fun convertDrawableToBitmap(drawable: Drawable): Bitmap {
            val bitmap = Bitmap.createBitmap(100, 300, Bitmap.Config.ARGB_8888)
            val canvas = Canvas(bitmap)
            drawable.setBounds(0, 0, canvas.width, canvas.height)
            drawable.draw(canvas)
            return bitmap
        }

        const val PREFS_NAME = "ani.dantotsu.widgets.UpcomingWidget"
        const val PREF_BACKGROUND_COLOR = "background_color"
        const val PREF_BACKGROUND_FADE = "background_fade"
        const val PREF_TITLE_TEXT_COLOR = "title_text_color"
        const val PREF_COUNTDOWN_TEXT_COLOR = "countdown_text_color"
    }
}

internal fun updateAppWidget(
    context: Context,
    appWidgetManager: AppWidgetManager,
    appWidgetId: Int
) {
    val views = UpcomingWidget.updateAppWidget(context, appWidgetId)
    appWidgetManager.updateAppWidget(appWidgetId, views)
    appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetId, R.id.widgetListView)
}