add caches

posts/src/jvmMain/kotlin/cached/CachedPostsRepo.kt

@@ -0,0 +1,49 @@
+package dev.inmo.plaguposter.posts.cached
+
+import com.soywiz.klock.DateTime
+import dev.inmo.micro_utils.pagination.FirstPagePagination
+import dev.inmo.micro_utils.pagination.firstPageWithOneElementPagination
+import dev.inmo.micro_utils.pagination.utils.doForAllWithNextPaging
+import dev.inmo.micro_utils.repos.CRUDRepo
+import dev.inmo.micro_utils.repos.cache.cache.FullKVCache
+import dev.inmo.micro_utils.repos.cache.full.FullCRUDCacheRepo
+import dev.inmo.plaguposter.posts.models.NewPost
+import dev.inmo.plaguposter.posts.models.PostContentInfo
+import dev.inmo.plaguposter.posts.models.PostId
+import dev.inmo.plaguposter.posts.models.RegisteredPost
+import dev.inmo.plaguposter.posts.repo.PostsRepo
+import dev.inmo.tgbotapi.types.IdChatIdentifier
+import dev.inmo.tgbotapi.types.MessageIdentifier
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.Flow
+
+class CachedPostsRepo(
+    private val parentRepo: PostsRepo,
+    private val scope: CoroutineScope,
+    private val kvCache: FullKVCache<PostId, RegisteredPost> = FullKVCache()
+) : PostsRepo, CRUDRepo<RegisteredPost, PostId, NewPost> by FullCRUDCacheRepo(
+    parentRepo,
+    kvCache,
+    scope,
+    { it.id }
+) {
+    override val removedPostsFlow: Flow<RegisteredPost> by parentRepo::removedPostsFlow
+
+    override suspend fun getIdByChatAndMessage(chatId: IdChatIdentifier, messageId: MessageIdentifier): PostId? {
+        doForAllWithNextPaging(firstPageWithOneElementPagination) {
+            kvCache.values(it).also {
+                it.results.forEach {
+                    return it.takeIf {
+                        it.content.any { it.chatId == chatId && it.messageId == messageId }
+                    } ?.id ?: return@forEach
+                }
+            }
+        }
+
+        return null
+    }
+
+    override suspend fun getPostCreationTime(postId: PostId): DateTime? = kvCache.get(postId) ?.created
+
+    override suspend fun getFirstMessageInfo(postId: PostId): PostContentInfo? = kvCache.get(postId) ?.content ?.firstOrNull()
+}