working poc

app/src/main/java/sh/sar/isodroid/data/IsoFile.kt

@@ -0,0 +1,32 @@
+package sh.sar.isodroid.data
+
+import java.io.File
+
+data class IsoFile(
+    val path: String,
+    val name: String,
+    val size: Long
+) {
+    companion object {
+        fun fromFile(file: File): IsoFile {
+            return IsoFile(
+                path = file.absolutePath,
+                name = file.name,
+                size = file.length()
+            )
+        }
+    }
+
+    val formattedSize: String
+        get() {
+            val kb = size / 1024.0
+            val mb = kb / 1024.0
+            val gb = mb / 1024.0
+            return when {
+                gb >= 1.0 -> String.format("%.2f GB", gb)
+                mb >= 1.0 -> String.format("%.2f MB", mb)
+                kb >= 1.0 -> String.format("%.2f KB", kb)
+                else -> "$size B"
+            }
+        }
+}