From 487a924582e0af8a179a66820f8578f9df4826f8 Mon Sep 17 00:00:00 2001
From: Carl Vuorinen <carl.vuorinen@gmail.com>
Date: Wed, 22 Aug 2018 23:00:45 +0300
Subject: [PATCH] Create reusable methods in Task class to handle async
 markdown parsing

---
 .../android/habitica/models/tasks/Task.kt     | 31 +++++++++++++++++++
 .../habitica/ui/helpers/MarkdownParser.kt     | 13 ++++++++
 2 files changed, 44 insertions(+)

diff --git a/Habitica/src/main/java/com/habitrpg/android/habitica/models/tasks/Task.kt b/Habitica/src/main/java/com/habitrpg/android/habitica/models/tasks/Task.kt
index 3c3f88777..aaa1e0460 100644
--- a/Habitica/src/main/java/com/habitrpg/android/habitica/models/tasks/Task.kt
+++ b/Habitica/src/main/java/com/habitrpg/android/habitica/models/tasks/Task.kt
@@ -8,6 +8,7 @@ import com.habitrpg.android.habitica.R
 import com.habitrpg.android.habitica.models.Tag
 import com.habitrpg.android.habitica.models.user.Stats
 import com.habitrpg.android.habitica.ui.helpers.MarkdownParser
+import io.reactivex.functions.Consumer
 import io.realm.RealmList
 import io.realm.RealmObject
 import io.realm.annotations.Ignore
@@ -191,6 +192,36 @@ open class Task : RealmObject, Parcelable {
 
     }
 
+    fun markdownText(callback: (CharSequence) -> Unit): CharSequence {
+        if (this.parsedText != null) {
+            return this.parsedText as CharSequence
+        }
+
+        MarkdownParser.parseMarkdownAsync(this.text, Consumer { parsedText ->
+            this.parsedText = parsedText
+            callback(parsedText)
+        })
+
+        return this.text
+    }
+
+    fun markdownNotes(callback: (CharSequence) -> Unit): CharSequence? {
+        if (this.parsedNotes != null) {
+            return this.parsedNotes as CharSequence
+        }
+
+        if (this.notes?.isEmpty() == true) {
+            return null
+        }
+
+        MarkdownParser.parseMarkdownAsync(this.notes, Consumer { parsedText ->
+            this.parsedNotes = parsedText
+            callback(parsedText)
+        })
+
+        return this.notes
+    }
+
     override fun equals(other: Any?): Boolean {
         if (other == null) {
             return false
diff --git a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/helpers/MarkdownParser.kt b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/helpers/MarkdownParser.kt
index 84523617d..04c8e32e5 100644
--- a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/helpers/MarkdownParser.kt
+++ b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/helpers/MarkdownParser.kt
@@ -7,6 +7,11 @@ import com.commonsware.cwac.anddown.AndDown
 import net.pherth.android.emoji_library.EmojiParser
 
 import android.text.Html.FROM_HTML_MODE_LEGACY
+import com.habitrpg.android.habitica.helpers.RxErrorHandler
+import io.reactivex.Single
+import io.reactivex.android.schedulers.AndroidSchedulers
+import io.reactivex.functions.Consumer
+import io.reactivex.schedulers.Schedulers
 
 /**
  * @author data5tream
@@ -35,6 +40,14 @@ object MarkdownParser {
         return output
     }
 
+    fun parseMarkdownAsync(input: String?, onSuccess: Consumer<CharSequence>) {
+        Single.just(input)
+                .map { this.parseMarkdown(it) }
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(onSuccess, RxErrorHandler.handleEmptyError())
+    }
+
     /**
      * Converts stylized CharSequence into markdown
      *