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app/src/main/java/com/aiosman/riderpro/data/MomentService.kt

@@ -10,6 +10,7 @@ import kotlin.math.min
 interface MomentService {
     suspend fun getMomentById(id: Int): MomentItem
     suspend fun likeMoment(id: Int)
+    suspend fun dislikeMoment(id: Int)
     suspend fun getMoments(
         pageNumber: Int,
         author: Int? = null,
@@ -81,6 +82,10 @@ class TestMomentServiceImpl() : MomentService {
         testMomentBackend.likeMoment(id)
     }
 
+    override suspend fun dislikeMoment(id: Int) {
+        testMomentBackend.dislikeMoment(id)
+    }
+
 }
 
 class TestMomentBackend(
@@ -113,6 +118,12 @@ class TestMomentBackend(
             )
         }
         val currentSublist = rawList.subList(from, min(to, rawList.size))
+        currentSublist.forEach {
+            val myLikeIdList = TestDatabase.likeMomentList.filter { it.second == 1 }.map { it.first }
+            if (myLikeIdList.contains(it.id)) {
+                it.liked = true
+            }
+        }
         // delay
         kotlinx.coroutines.delay(loadDelay)
         return ListContainer(
@@ -124,7 +135,14 @@ class TestMomentBackend(
     }
 
     suspend fun getMomentById(id: Int): MomentItem {
-        return TestDatabase.momentData[id]
+        var moment = TestDatabase.momentData.first {
+            it.id == id
+        }
+        val isLike = TestDatabase.likeMomentList.any {
+            it.first == id && it.second == 1
+        }
+        moment = moment.copy(liked = isLike)
+        return moment
     }
 
     suspend fun likeMoment(id: Int) {
@@ -133,6 +151,17 @@ class TestMomentBackend(
         }
         val newMoment = oldMoment.copy(likeCount = oldMoment.likeCount + 1)
         TestDatabase.updateMomentById(id, newMoment)
+        TestDatabase.likeMomentList += Pair(id, 1)
+    }
+    suspend fun dislikeMoment(id: Int) {
+        val oldMoment = TestDatabase.momentData.first {
+            it.id == id
+        }
+        val newMoment = oldMoment.copy(likeCount = oldMoment.likeCount - 1)
+        TestDatabase.updateMomentById(id, newMoment)
+        TestDatabase.likeMomentList = TestDatabase.likeMomentList.filter {
+            it.first != id
+        }
     }
 
 }