/*
 * Kiwix Android
 * Copyright (c) 2019 Kiwix <android.kiwix.org>
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.kiwix.kiwixmobile.core.zim_manager.fileselect_view

import android.content.Context
import org.kiwix.kiwixmobile.core.R
import org.kiwix.kiwixmobile.core.utils.files.Log
import java.text.DecimalFormat
import kotlin.math.log10
import kotlin.math.pow

@JvmInline
value class ArticleCount(val articleCount: String) {
  fun toHumanReadable(context: Context): String = try {
    val size = Integer.parseInt(articleCount)
    if (size <= 0) {
      ""
    } else {
      val units = arrayOf("", "K", "M", "B", "T")
      val conversion = (log10(size.toDouble()) / 3).toInt()
      context.getString(
        R.string.articleCount,
        DecimalFormat("#,##0.#")
          .format(size / 1000.0.pow(conversion.toDouble())) + units[conversion]
      )
    }
  } catch (e: NumberFormatException) {
    Log.d("BooksAdapter", "$e")
    ""
  }
}
