Merge pull request wordpress-mobile#20960 from wordpress-mobile/conve…

…rt-blockprocessorfactory-to-kotlin

Convert BlockProcessor's child classes to Kotlin

WordPress/src/main/java/org/wordpress/android/ui/posts/PostUtils.java

@@ -431,7 +431,7 @@ public static boolean shouldShowGutenbergEditor(boolean isNewPost, String postCo
 
     public static String replaceMediaFileWithUrlInGutenbergPost(@NonNull String postContent,
                                                                 @NonNull String localMediaId, MediaFile mediaFile,
-                                                                String siteUrl) {
+                                                                @NonNull String siteUrl) {
         if (mediaFile != null && contentContainsGutenbergBlocks(postContent)) {
             MediaUploadCompletionProcessor processor = new MediaUploadCompletionProcessor(localMediaId, mediaFile,
                     siteUrl);

WordPress/src/main/java/org/wordpress/android/ui/posts/mediauploadcompletionprocessors/AudioBlockProcessor.kt

@@ -5,21 +5,18 @@ import org.jsoup.nodes.Document
 import org.wordpress.android.util.helpers.MediaFile
 
 class AudioBlockProcessor(localId: String, mediaFile: MediaFile) : BlockProcessor(localId, mediaFile) {
-    override fun processBlockContentDocument(document: Document?): Boolean {
-        val audioElements = document?.select(AUDIO_TAG)
+    override fun processBlockContentDocument(document: Document): Boolean {
+        val audioElements = document.select(AUDIO_TAG)
 
-        audioElements?.let { elements ->
-            for (element in elements) {
-                // replaces the src attribute's local url with the remote counterpart.
-                element.attr(SRC_ATTRIBUTE, remoteUrl)
-            }
-            return true
+        for (element in audioElements) {
+            // replaces the src attribute's local url with the remote counterpart.
+            element.attr(SRC_ATTRIBUTE, remoteUrl)
         }
-        return false
+        return true
     }
 
-    override fun processBlockJsonAttributes(jsonAttributes: JsonObject?): Boolean {
-        val id = jsonAttributes?.get(ID_ATTRIBUTE)
+    override fun processBlockJsonAttributes(jsonAttributes: JsonObject): Boolean {
+        val id = jsonAttributes.get(ID_ATTRIBUTE)
 
         return if (id != null && !id.isJsonNull && id.asString == localId) {
             jsonAttributes.apply {

WordPress/src/main/java/org/wordpress/android/ui/posts/mediauploadcompletionprocessors/BlockProcessor.kt

@@ -72,37 +72,37 @@ abstract class BlockProcessor internal constructor(@JvmField var localId: String
      * @return A string containing content with ids and urls replaced
      */
     @JvmOverloads
-    fun processBlock(block: String, isSelfClosingTag: Boolean = false) = if (splitBlock(block, isSelfClosingTag)) {
-        if (processBlockJsonAttributes(jsonAttributes)) {
-            if (isSelfClosingTag) {
-                // return injected block
-                StringBuilder()
-                    .append("<!-- wp:")
-                    .append(blockName)
-                    .append(" ")
-                    .append(jsonAttributes) // json parser output
-                    .append(" /-->")
-                    .toString()
-            } else if (processBlockContentDocument(blockContentDocument)) {
-                // return injected block
-                StringBuilder()
-                    .append("<!-- wp:")
-                    .append(blockName)
-                    .append(" ")
-                    .append(jsonAttributes) // json parser output
-                    .append(" -->\n")
-                    .append(blockContentDocument?.body()?.html()) // HTML parser output
-                    .append(closingComment)
-                    .toString()
-            } else {
-                block
-            }
-        } else {
-            processInnerBlock(block) // delegate to inner blocks if needed
+    fun processBlock(block: String, isSelfClosingTag: Boolean = false) = when {
+        !splitBlock(block, isSelfClosingTag) -> block // leave block unchanged
+        jsonAttributes?.let { !processBlockJsonAttributes(it) } == true -> {
+            // delegate to inner blocks if needed
+            processInnerBlock(block)
+        }
+        isSelfClosingTag -> {
+            // return injected block
+            StringBuilder()
+                .append("<!-- wp:")
+                .append(blockName)
+                .append(" ")
+                .append(jsonAttributes) // json parser output
+                .append(" /-->")
+                .toString()
         }
-    } else {
-        // leave block unchanged
-        block
+
+        blockContentDocument?.let { processBlockContentDocument(it) } == true -> {
+            // return injected block
+            StringBuilder()
+                .append("<!-- wp:")
+                .append(blockName)
+                .append(" ")
+                .append(jsonAttributes) // json parser output
+                .append(" -->\n")
+                .append(blockContentDocument?.body()?.html()) // HTML parser output
+                .append(closingComment)
+                .toString()
+        }
+
+        else -> block // leave block unchanged
     }
 
     fun addIntPropertySafely(jsonAttributes: JsonObject, propertyName: String, value: String) = try {
@@ -121,7 +121,7 @@ abstract class BlockProcessor internal constructor(@JvmField var localId: String
      * @param document The document to be mutated to make the necessary replacements
      * @return A boolean value indicating whether or not the block contents should be replaced
      */
-    abstract fun processBlockContentDocument(document: Document?): Boolean
+    abstract fun processBlockContentDocument(document: Document): Boolean
 
     /**
      * All concrete implementations must implement this method for the particular block type. The jsonAttributes object
@@ -134,7 +134,7 @@ abstract class BlockProcessor internal constructor(@JvmField var localId: String
      * @param jsonAttributes the attributes object used to check for a match with the local id, and mutated if necessary
      * @return
      */
-    abstract fun processBlockJsonAttributes(jsonAttributes: JsonObject?): Boolean
+    abstract fun processBlockJsonAttributes(jsonAttributes: JsonObject): Boolean
 
     /**
      * This method can be optionally overridden by concrete implementations to delegate further processing via recursion

WordPress/src/main/java/org/wordpress/android/ui/posts/mediauploadcompletionprocessors/BlockProcessorFactory.kt

@@ -0,0 +1,37 @@
+package org.wordpress.android.ui.posts.mediauploadcompletionprocessors
+
+import org.wordpress.android.util.helpers.MediaFile
+
+/**
+ * This factory initializes block processors for all media block types and provides a method to retrieve a block
+ * processor instance for a given block type.
+ * @param localId The local media id that needs replacement
+ * @param mediaFile The mediaFile containing the remote id and remote url`
+ * @param siteUrl The site url - used to generate the attachmentPage url
+ * @return The factory instance - useful for chaining this method upon instantiation
+ */
+internal class BlockProcessorFactory(
+    mediaUploadCompletionProcessor: MediaUploadCompletionProcessor,
+    localId: String,
+    mediaFile: MediaFile,
+    siteUrl: String
+) {
+    private val mediaBlockTypeBlockProcessorMap = hashMapOf(
+        MediaBlockType.IMAGE to ImageBlockProcessor(localId, mediaFile),
+        MediaBlockType.VIDEOPRESS to VideoPressBlockProcessor(localId, mediaFile),
+        MediaBlockType.VIDEO to VideoBlockProcessor(localId, mediaFile),
+        MediaBlockType.MEDIA_TEXT to MediaTextBlockProcessor(localId, mediaFile),
+        MediaBlockType.GALLERY to GalleryBlockProcessor(localId, mediaFile, siteUrl, mediaUploadCompletionProcessor),
+        MediaBlockType.COVER to CoverBlockProcessor(localId, mediaFile, mediaUploadCompletionProcessor),
+        MediaBlockType.FILE to FileBlockProcessor(localId, mediaFile),
+        MediaBlockType.AUDIO to AudioBlockProcessor(localId, mediaFile)
+    )
+
+    /**
+     * Retrieves the block processor instance for the given media block type.
+     *
+     * @param blockType The media block type for which to provide a [BlockProcessor]
+     * @return The [BlockProcessor] for the given media block type
+     */
+    fun getProcessorForMediaBlockType(blockType: MediaBlockType) = mediaBlockTypeBlockProcessorMap[blockType]
+}