add selector

ratings/src/commonMain/kotlin/models/Rating.kt

@@ -7,4 +7,6 @@ import kotlin.jvm.JvmInline
 @JvmInline
 value class Rating(
     val double: Double
-)
+) : Comparable<Rating> {
+    override fun compareTo(other: Rating): Int = double.compareTo(other.double)
+}

ratings/src/commonMain/kotlin/repo/ReadRatingsRepo.kt

@@ -4,4 +4,24 @@ import dev.inmo.micro_utils.repos.ReadKeyValueRepo
 import dev.inmo.plaguposter.posts.models.PostId
 import dev.inmo.plaguposter.ratings.models.Rating
 
-interface ReadRatingsRepo : ReadKeyValueRepo<PostId, Rating>
+interface ReadRatingsRepo : ReadKeyValueRepo<PostId, Rating> {
+    suspend fun getPosts(
+        range: ClosedRange<Rating>,
+        reversed: Boolean = false,
+        count: Int? = null,
+        exclude: List<PostId> = emptyList()
+    ): Map<PostId, Rating>
+
+    suspend fun getPostsWithRatingGreaterEq(
+        then: Rating,
+        reversed: Boolean = false,
+        count: Int? = null,
+        exclude: List<PostId> = emptyList()
+    ): Map<PostId, Rating>
+    suspend fun getPostsWithRatingLessEq(
+        then: Rating,
+        reversed: Boolean = false,
+        count: Int? = null,
+        exclude: List<PostId> = emptyList()
+    ): Map<PostId, Rating>
+}