From 0bce7bd60aeb683515c1741c075f066947e14233 Mon Sep 17 00:00:00 2001
From: InsanusMokrassar <ovsyannikov.alexey95@gmail.com>
Date: Sun, 6 Oct 2024 12:25:42 +0600
Subject: [PATCH] fix of #488

---
 CHANGELOG.md                                  |  3 +
 .../KtorApplicationConfigurator.kt            | 96 ++++++++++++++++++-
 2 files changed, 98 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a09fb554e17..8b172140a9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@
   * Add extension `withReplacedAt`/`withReplaced` ([#489](https://github.com/InsanusMokrassar/MicroUtils/issues/489))
 * `Coroutines`:
   * Add extension `Flow.debouncedBy`
+* `Ktor`:
+  * `Server`:
+    * Add `KtorApplicationConfigurator.Routing.Static` as solution for [#488](https://github.com/InsanusMokrassar/MicroUtils/issues/488)
 
 ## 0.22.4
 
diff --git a/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/KtorApplicationConfigurator.kt b/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/KtorApplicationConfigurator.kt
index 424be129bdc..a75503b323a 100644
--- a/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/KtorApplicationConfigurator.kt
+++ b/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/KtorApplicationConfigurator.kt
@@ -1,7 +1,101 @@
 package dev.inmo.micro_utils.ktor.server.configurators
 
-import io.ktor.server.application.Application
+import io.ktor.server.application.*
+import io.ktor.server.http.content.*
+import io.ktor.server.plugins.cachingheaders.*
+import io.ktor.server.plugins.statuspages.*
+import io.ktor.server.routing.*
+import io.ktor.server.sessions.*
+import kotlinx.serialization.Contextual
+import kotlinx.serialization.Serializable
+import java.io.File
 
 interface KtorApplicationConfigurator {
+    @Serializable
+    class Routing(
+        private val elements: List<@Contextual Element>
+    ) : KtorApplicationConfigurator {
+        fun interface Element { operator fun Route.invoke() }
+        private val rootInstaller = Element {
+            elements.forEach {
+                it.apply { invoke() }
+            }
+        }
+
+        override fun Application.configure() {
+            pluginOrNull(io.ktor.server.routing.Routing) ?.apply {
+                rootInstaller.apply { invoke() }
+            } ?: install(io.ktor.server.routing.Routing) {
+                rootInstaller.apply { invoke() }
+            }
+        }
+
+        /**
+         * @param pathToFolder Contains [Pair]s where firsts are paths in urls and seconds are folders file paths
+         * @param pathToResource Contains [Pair]s where firsts are paths in urls and seconds are packages in resources
+         */
+        class Static(
+            private val pathToFolder: List<Pair<String, String>> = emptyList(),
+            private val pathToResource: List<Pair<String, String>> = emptyList(),
+        ) : Element {
+            override fun Route.invoke() {
+                pathToFolder.forEach {
+                    staticFiles(
+                        it.first,
+                        File(it.second)
+                    )
+                }
+                pathToResource.forEach {
+                    staticResources(
+                        it.first,
+                        it.second
+                    )
+                }
+            }
+        }
+    }
+
+    class StatusPages(
+        private val elements: List<@Contextual Element>
+    ) : KtorApplicationConfigurator {
+        fun interface Element { operator fun StatusPagesConfig.invoke() }
+
+        override fun Application.configure() {
+            install(StatusPages) {
+                elements.forEach {
+                    it.apply { invoke() }
+                }
+            }
+        }
+    }
+
+    class Sessions(
+        private val elements: List<@Contextual Element>
+    ) : KtorApplicationConfigurator {
+        fun interface Element { operator fun SessionsConfig.invoke() }
+
+        override fun Application.configure() {
+            install(Sessions) {
+                elements.forEach {
+                    it.apply { invoke() }
+                }
+            }
+        }
+    }
+
+    class CachingHeaders(
+        private val elements: List<@Contextual Element>
+    ) : KtorApplicationConfigurator {
+        fun interface Element { operator fun CachingHeadersConfig.invoke() }
+
+        override fun Application.configure() {
+            install(CachingHeaders) {
+                elements.forEach {
+                    it.apply { invoke() }
+                }
+            }
+        }
+    }
+
     fun Application.configure()
 }