VersionsRepo

repos/exposed/src/jvmMain/kotlin/dev/inmo/micro_utils/repos/exposed/versions/ExposedStandardVersionsRepoProxy.kt

@@ -0,0 +1,48 @@
+package dev.inmo.micro_utils.repos.exposed.versions
+
+import dev.inmo.micro_utils.repos.exposed.ExposedRepo
+import dev.inmo.micro_utils.repos.exposed.initTable
+import dev.inmo.micro_utils.repos.versions.*
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.transactions.transaction
+
+/**
+ * Use this method to create [StandardVersionsRepo] based on [Database] with [ExposedStandardVersionsRepoProxy] as
+ * [StandardVersionsRepoProxy]
+ */
+@Suppress("NOTHING_TO_INLINE")
+inline fun versionsRepo(database: Database): VersionsRepo<Database> = StandardVersionsRepo(
+    ExposedStandardVersionsRepoProxy(database)
+)
+
+class ExposedStandardVersionsRepoProxy(
+    override val database: Database
+) : StandardVersionsRepoProxy<Database>, Table("ExposedVersionsProxy"), ExposedRepo {
+    private val tableNameColumn = text("tableName")
+    private val tableVersionColumn = integer("tableName")
+
+    init {
+        initTable()
+    }
+
+    override suspend fun getTableVersion(tableName: String): Int? = transaction(database) {
+        select { tableNameColumn.eq(tableName) }.limit(1).firstOrNull() ?.getOrNull(tableVersionColumn)
+    }
+
+    override suspend fun updateTableVersion(tableName: String, version: Int) {
+        transaction(database) {
+            val updated = update(
+                { tableNameColumn.eq(tableName) }
+            ) {
+                it[tableVersionColumn] = version
+            } > 0
+            if (!updated) {
+                insert {
+                    it[tableNameColumn] = tableName
+                    it[tableVersionColumn] = version
+                }
+            }
+        }
+    }
+
+}