mattermost-mobile/android/app/src/main/java/com/mattermost/helpers/BitmapCache.kt

package com.mattermost.helpers

import android.graphics.Bitmap
import android.util.LruCache

class BitmapCache {
    private var memoryCache: LruCache<String, Bitmap>

    init {
        val maxMemory = (Runtime.getRuntime().maxMemory() / 1024).toInt()
        val cacheSize = maxMemory / 8
        memoryCache = object : LruCache<String, Bitmap>(cacheSize) {
            override fun sizeOf(key: String, bitmap: Bitmap): Int {
                return bitmap.byteCount / 1024
            }
        }
    }

    fun getBitmapFromMemCache(key: String): Bitmap? {
        return memoryCache.get(key)
    }

    fun addBitmapToMemoryCache(key: String, bitmap: Bitmap) {
        if (getBitmapFromMemCache(key) == null) {
            memoryCache.put(key, bitmap)
        }
    }
}