Migrate ShareMediaContent to Kotlin

Summary: As title.

Reviewed By: jawwad

Differential Revision: D34252099

fbshipit-source-id: cd6b061c39f51d159c0092ffd5781ceb9668e61c

facebook-common/src/main/java/com/facebook/share/model/ShareMediaContent.kt

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
+ * copy, modify, and distribute this software in source code or binary form for use
+ * in connection with the web services and APIs provided by Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use of
+ * this software is subject to the Facebook Developer Principles and Policies
+ * [http://developers.facebook.com/policy/]. This copyright notice shall be
+ * included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package com.facebook.share.model
+
+import android.os.Parcel
+import android.os.Parcelable
+import java.lang.IllegalArgumentException
+
+class ShareMediaContent : ShareContent<ShareMediaContent, ShareMediaContent.Builder> {
+  val media: List<ShareMedia>
+
+  private constructor(builder: Builder) : super(builder) {
+    media = builder.media.toList()
+  }
+
+  internal constructor(source: Parcel) : super(source) {
+    this.media =
+        source.readParcelableArray(ShareMedia::class.java.classLoader)?.mapNotNull {
+          it as ShareMedia?
+        }
+            ?: listOf()
+  }
+
+  override fun describeContents(): Int = 0
+
+  override fun writeToParcel(out: Parcel, flags: Int) {
+    super.writeToParcel(out, flags)
+    out.writeParcelableArray(media.toTypedArray(), flags)
+  }
+
+  /** Builder for the [SharePhotoContent] interface. */
+  class Builder : ShareContent.Builder<ShareMediaContent, Builder>() {
+    internal val media: MutableList<ShareMedia> = ArrayList()
+
+    /**
+     * Adds a medium to the content.
+     *
+     * @param medium [com.facebook.share.model.ShareMedia] to add.
+     * @return The builder.
+     */
+    fun addMedium(medium: ShareMedia?): Builder {
+      if (medium != null) {
+        val mediumToAdd: ShareMedia =
+            when (medium) {
+              is SharePhoto -> {
+                SharePhoto.Builder().readFrom(medium).build()
+              }
+              is ShareVideo -> {
+                ShareVideo.Builder().readFrom(medium).build()
+              }
+              else -> {
+                throw IllegalArgumentException("medium must be either a SharePhoto or ShareVideo")
+              }
+            }
+        media.add(mediumToAdd)
+      }
+      return this
+    }
+
+    /**
+     * Adds multiple media to the content.
+     *
+     * @param media [java.util.List] of [com.facebook.share.model.ShareMedia] to add.
+     * @return The builder.
+     */
+    fun addMedia(media: List<ShareMedia>?): Builder {
+      if (media != null) {
+        for (medium in media) {
+          addMedium(medium)
+        }
+      }
+      return this
+    }
+
+    override fun build(): ShareMediaContent {
+      return ShareMediaContent(this)
+    }
+
+    override fun readFrom(content: ShareMediaContent?): Builder {
+      return if (content == null) {
+        this
+      } else super.readFrom(content).addMedia(content.media)
+    }
+
+    /**
+     * Replaces the media for the builder.
+     *
+     * @param media [java.util.List] of [com.facebook.share.model.ShareMedia] to add.
+     * @return The builder.
+     */
+    fun setMedia(media: List<ShareMedia>?): Builder {
+      this.media.clear()
+      addMedia(media)
+      return this
+    }
+  }
+
+  companion object {
+    @JvmField
+    val CREATOR: Parcelable.Creator<ShareMediaContent> =
+        object : Parcelable.Creator<ShareMediaContent> {
+          override fun createFromParcel(source: Parcel): ShareMediaContent {
+            return ShareMediaContent(source)
+          }
+
+          override fun newArray(size: Int): Array<ShareMediaContent?> {
+            return arrayOfNulls(size)
+          }
+        }
+  }
+}

facebook-common/src/test/kotlin/com/facebook/share/model/ShareMediaContentTest.kt

@@ -44,15 +44,15 @@ class ShareMediaContentTest : FacebookTestCase() {
   fun `test building media content with photo`() {
     val content = ShareMediaContent.Builder().addMedium(testPhoto).build()
 
-    val contentUrl = (content.media?.first() as SharePhoto?)?.imageUrl
+    val contentUrl = (content.media.first() as SharePhoto?)?.imageUrl
     assertThat(contentUrl).isEqualTo(testPhoto.imageUrl)
   }
 
   @Test
   fun `test building media content with video`() {
     val content = ShareMediaContent.Builder().addMedium(testVideo).build()
 
-    val contentUrl = (content.media?.first() as ShareVideo?)?.localUrl
+    val contentUrl = (content.media.first() as ShareVideo?)?.localUrl
     assertThat(contentUrl).isEqualTo(testVideo.localUrl)
   }
 
@@ -64,7 +64,7 @@ class ShareMediaContentTest : FacebookTestCase() {
   @Test
   fun `test building media content with a list of media`() {
     val content = ShareMediaContent.Builder().addMedia(listOf(testPhoto, testVideo)).build()
-    assertThat(content.media?.size).isEqualTo(2)
+    assertThat(content.media.size).isEqualTo(2)
   }
 
   @Test
@@ -86,15 +86,15 @@ class ShareMediaContentTest : FacebookTestCase() {
     val content = ShareMediaContent.Builder().addMedia(listOf(testPhoto)).build()
     val newContent = ShareMediaContent.Builder().readFrom(content).build()
 
-    assertThat((newContent.media?.first() as SharePhoto?)?.imageUrl).isEqualTo(testPhoto.imageUrl)
+    assertThat((newContent.media.first() as SharePhoto?)?.imageUrl).isEqualTo(testPhoto.imageUrl)
   }
 
   @Test
   fun `test builder setting media will clear existing media`() {
     val content =
         ShareMediaContent.Builder().addMedium(testPhoto).setMedia(listOf(testVideo)).build()
 
-    assertThat(content.media?.first() is ShareVideo).isTrue
-    assertThat(content.media?.size).isEqualTo(1)
+    assertThat(content.media.first() is ShareVideo).isTrue
+    assertThat(content.media.size).isEqualTo(1)
   }
 }