savvasdalkitsis

# Commands installed

# tldr - better man
# scc - code counter
# duf - disk usage
# ctop - top for containers
# lazygit - git client
# fx - json viewer
# mc - midnight commander
# autojump (j) - jump to directories

savvasdalkitsis

LazyStaggeredGrid(columnCount = 2) {
    (0..100).forEach { _ ->
        item {
            Box(modifier = Modifier
                .fillMaxWidth()
                .aspectRatio(ratio = random.nextDouble(0.2, 1.8).toFloat())
                .background(Color(random.nextInt(255), random.nextInt(255), random.nextInt(255)))
            )
        }
    }

savvasdalkitsis

// This requires NO permissions (camera, storage etc)
fun askForPhoto(activity: Activity, imageRequest: Int) {
  val dir = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
  val picture = File(dir, UUID.randomUUID().toString())
  // keep this. Will be used later in the onActivityResult method
  photoUri = FileProvider.getUriForFile(this, "com.savvasdalkitsis.fileprovider", picture)
  val photoIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
  photoIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri)
  startActivityForResult(photoIntent, imageRequest)
}

savvasdalkitsis

fun getLocation(photoUri: Uri): Pair<Double, Double> {
  contentResolver.openInputStream(photoUri).use { stream ->
    val latLon = ExifInterface(stream).latLong
    return Pair(latLon[0], latLon[1])
  }
}

savvasdalkitsis

val frescoOkHttpClient = OkHttpClient.Builder()
  .connectTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .readTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .writeTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .addInterceptor(StaleIfErrorInterceptor())
  .cache(newCache("fresco_cache", 100, ByteConstants.MB))
  .build()

savvasdalkitsis

class StaleIfErrorInterceptor: Interceptor {
  
  override fun intercept(chain: Interceptor.Chain): Response {
    val request = chain.request().newBuilder()
    return try {
      chain.proceed(request.build())
    } catch (e: IOException) {
      Log.w(TAG, "Error on network call. Fallback to cache if present.", e)
      chain.proceed(request
                    .cacheControl(CacheControl.FORCE_CACHE)

savvasdalkitsis

val frescoOkHttpClient = OkHttpClient.Builder()
  .connectTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .readTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .writeTimeout(DEFAULT_REQUEST_TIMEOUT, TimeUnit.SECONDS)
  .cache(newCache("fresco_cache", 100, ByteConstants.MB))
  .build()
 
fun newCache(name: String, mb: Long, unit: Int): Cache =
  Cache(File(applicationContext.cacheDir, name), mb * unit)

savvasdalkitsis

val imagePipelineConfig = ImagePipelineConfig.newBuilder(context)
  .setNetworkFetcher(OkHttpNetworkFetcherWithCache(frescoOkHttpClient))
  // no way to disable the disk cache globally, setting everything 
  // no to max 0 bytes
  .setMainDiskCacheConfig(DiskCacheConfig.newBuilder(this)
      .setMaxCacheSize(0)
      .setMaxCacheSizeOnLowDiskSpace(0)
      .setMaxCacheSizeOnVeryLowDiskSpace(0)
      .build())
  .build()

savvasdalkitsis

/**
 * The default [OkHttpNetworkFetcher] injects a ‘Cache-Control: no-store’ 
 * header in the requests, preventing the response cache to work for images loaded 
 * via Fresco. This is done because Fresco has its own disk cache which, 
 * unfortunately, ignores the response cache headers. <br><br>
 *
 * We decided to disable that disk cache and rely on the http one, so we need to 
 * remove the ‘no-store header from the request 
 **/
class OkHttpNetworkFetcherWithCache : OkHttpNetworkFetcher {

savvasdalkitsis

val imagePipelineConfig = OkHttpImagePipelineConfigFactory
  .newBuilder(context, okHttpClient)
  // no way to disable the disk cache globally, setting everything 
  // no to max 0 bytes
  .setMainDiskCacheConfig(DiskCacheConfig.newBuilder(context)
      .setMaxCacheSize(0)
      .setMaxCacheSizeOnLowDiskSpace(0)
      .setMaxCacheSizeOnVeryLowDiskSpace(0)
      .build())
  .build()