Convert ImageSizeMap to Kotlin

WordPress/src/main/java/org/wordpress/android/ui/reader/utils/ImageSizeMap.kt

@@ -0,0 +1,82 @@
+package org.wordpress.android.ui.reader.utils
+
+import org.json.JSONException
+import org.json.JSONObject
+import org.wordpress.android.util.AppLog
+import org.wordpress.android.util.JSONUtils
+import org.wordpress.android.util.UrlUtils
+import androidx.core.net.toUri
+
+/**
+ * hash map of sizes of attachments in a reader post - created from the json "attachments" section
+ * of the post endpoints
+ */
+class ImageSizeMap(private val postContent: String, private val jsonString: String) :
+    HashMap<String, ImageSizeMap.ImageSize>() {
+    init {
+        if (jsonString.isNotEmpty() && jsonString != EMPTY_JSON) {
+            parseJson()
+        }
+    }
+
+    @Suppress("NestedBlockDepth")
+    private fun parseJson() {
+        try {
+            val json = JSONObject(jsonString)
+            val keys = json.keys()
+            while (keys.hasNext()) {
+                json.optJSONObject(keys.next())?.let { jsonAttach ->
+                    val mimeType = JSONUtils.getString(jsonAttach, "mime_type")
+                    if (mimeType.startsWith("image")) {
+                        parseJsonImage(jsonAttach)
+                    }
+                }
+            }
+        } catch (e: JSONException) {
+            AppLog.e(AppLog.T.READER, e)
+        }
+    }
+
+    private fun parseJsonImage(jsonImage: JSONObject) {
+        val imageUrl = JSONUtils.getString(
+            jsonImage,
+            "URL"
+        )
+        val key = getKeyFromImageUrl(imageUrl)
+
+        // make sure this image actually appears in the post content - it's possible for
+        // an image to be in the attachments but not in the post itself
+        val path = key.toUri().path
+        if (path != null && postContent.contains(path)) {
+            var width = jsonImage.optInt("width")
+            var height = jsonImage.optInt("height")
+
+            // check if data-orig-size is present and use it
+            val originalSize = jsonImage.optString("data-orig-size")
+            val sizes = originalSize.split(",".toRegex()).dropLastWhile { it.isEmpty() }
+                .toTypedArray()
+            if (sizes.size == 2) {
+                width = sizes[0].toInt()
+                height = sizes[1].toInt()
+            }
+
+            this[key] =
+                ImageSize(
+                    width,
+                    height
+                )
+        }
+    }
+
+    fun getImageSize(imageUrl: String): ImageSize? {
+        return get(getKeyFromImageUrl(imageUrl))
+    }
+
+    private fun getKeyFromImageUrl(imageUrl: String) = UrlUtils.normalizeUrl(UrlUtils.removeQuery(imageUrl))
+
+    class ImageSize(val width: Int, val height: Int)
+
+    companion object {
+        private const val EMPTY_JSON = "{}"
+    }
+}