FossifyGallery/app/src/main/kotlin/com/simplemobiletools/gallery/Utils.kt

package com.simplemobiletools.gallery

import android.app.Activity
import android.content.Context
import android.content.res.Resources
import android.os.Build
import android.util.DisplayMetrics
import android.util.TypedValue
import android.view.KeyCharacterMap
import android.view.KeyEvent
import android.view.ViewConfiguration
import android.webkit.MimeTypeMap

class Utils {
    companion object {
        fun getActionBarHeight(context: Context, res: Resources): Int {
            val tv = TypedValue()
            var height = 0
            if (context.theme.resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
                height = TypedValue.complexToDimensionPixelSize(tv.data, res.displayMetrics)
            }
            return height
        }

        fun getStatusBarHeight(res: Resources): Int {
            val id = res.getIdentifier("status_bar_height", "dimen", "android")
            return if (id > 0) {
                res.getDimensionPixelSize(id)
            } else
                0
        }

        fun getNavBarHeight(res: Resources): Int {
            val id = res.getIdentifier("navigation_bar_height", "dimen", "android")
            return if (id > 0) {
                res.getDimensionPixelSize(id)
            } else
                0
        }

        fun hasNavBar(act: Activity): Boolean {
            return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                val display = act.windowManager.defaultDisplay

                val realDisplayMetrics = DisplayMetrics()
                display.getRealMetrics(realDisplayMetrics)

                val realHeight = realDisplayMetrics.heightPixels
                val realWidth = realDisplayMetrics.widthPixels

                val displayMetrics = DisplayMetrics()
                display.getMetrics(displayMetrics)

                val displayHeight = displayMetrics.heightPixels
                val displayWidth = displayMetrics.widthPixels

                realWidth - displayWidth > 0 || realHeight - displayHeight > 0
            } else {
                val hasMenuKey = ViewConfiguration.get(act).hasPermanentMenuKey()
                val hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK)
                !hasMenuKey && !hasBackKey
            }
        }

        fun getMimeType(url: String): String? {
            val extension = MimeTypeMap.getFileExtensionFromUrl(url)
            return if (extension != null) {
                MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
            } else
                ""
        }
    }
}