Unlimited number of poll options (#1340)

* implement unlimited number of poll options

* fixes

* extract percent calculation into function so it can be used anywhere

* add license header

app/src/main/java/com/keylesspalace/tusky/viewdata/PollViewData.kt

@@ -0,0 +1,66 @@
+/* Copyright 2019 Conny Duck
+ *
+ * This file is a part of Tusky.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.viewdata
+
+import com.keylesspalace.tusky.entity.Poll
+import com.keylesspalace.tusky.entity.PollOption
+import java.util.*
+import kotlin.math.roundToInt
+
+data class PollViewData(
+        val id: String,
+        val expiresAt: Date?,
+        val expired: Boolean,
+        val multiple: Boolean,
+        val votesCount: Int,
+        val options: List<PollOptionViewData>,
+        var voted: Boolean
+)
+
+data class PollOptionViewData(
+        val title: String,
+        var votesCount: Int,
+        var selected: Boolean
+)
+
+fun calculatePercent(fraction: Int, total: Int): Int {
+    return if (fraction == 0) {
+        0
+    } else {
+        (fraction / total.toDouble() * 100).roundToInt()
+    }
+}
+
+fun Poll?.toViewData(): PollViewData? {
+    if (this == null) return null
+    return PollViewData(
+            id,
+            expiresAt,
+            expired,
+            multiple,
+            votesCount,
+            options.map { it.toViewData() },
+            voted
+    )
+}
+
+fun PollOption.toViewData(): PollOptionViewData {
+    return PollOptionViewData(
+            title,
+            votesCount,
+            false
+    )
+}

app/src/main/java/com/keylesspalace/tusky/viewdata/StatusViewData.java

@@ -89,7 +89,7 @@ public abstract class StatusViewData {
         private final boolean isCollapsible; /** Whether the status meets the requirement to be collapse */
         final boolean isCollapsed; /** Whether the status is shown partially or fully */
         @Nullable
-        private final Poll poll;
+        private final PollViewData poll;
         private final boolean isBot;
 
         public Concrete(String id, Spanned content, boolean reblogged, boolean favourited,
@@ -99,7 +99,7 @@ public abstract class StatusViewData {
                         Date createdAt, int reblogsCount, int favouritesCount, @Nullable String inReplyToId,
                         @Nullable Status.Mention[] mentions, String senderId, boolean rebloggingEnabled,
                         Status.Application application, List<Emoji> statusEmojis, List<Emoji> accountEmojis, @Nullable Card card,
-                        boolean isCollapsible, boolean isCollapsed, @Nullable Poll poll, boolean isBot) {
+                        boolean isCollapsible, boolean isCollapsed, @Nullable PollViewData poll, boolean isBot) {
 
             this.id = id;
             if (Build.VERSION.SDK_INT == 23) {
@@ -273,7 +273,7 @@ public abstract class StatusViewData {
         }
 
         @Nullable
-        public Poll getPoll() {
+        public PollViewData getPoll() {
             return poll;
         }
 
@@ -418,7 +418,7 @@ public abstract class StatusViewData {
         private Card card;
         private boolean isCollapsible; /** Whether the status meets the requirement to be collapsed */
         private boolean isCollapsed; /** Whether the status is shown partially or fully */
-        private Poll poll;
+        private PollViewData poll;
         private boolean isBot;
 
         public Builder() {
@@ -617,7 +617,7 @@ public abstract class StatusViewData {
         }
 
         public Builder setPoll(Poll poll) {
-            this.poll = poll;
+            this.poll = PollViewDataKt.toViewData(poll);
             return this;
         }