add webserver, etc...

- add ktor webserver
- package is subpackaged.

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/Main.kt

@@ -0,0 +1,44 @@
+package space.mori.chzzk_bot.webserver
+
+import io.ktor.http.*
+import io.ktor.serialization.kotlinx.json.*
+import io.ktor.server.application.*
+import io.ktor.server.engine.*
+import io.ktor.server.netty.*
+import io.ktor.server.plugins.contentnegotiation.*
+import io.ktor.server.plugins.cors.routing.*
+import io.ktor.server.plugins.swagger.*
+import io.ktor.server.routing.*
+import io.ktor.server.websocket.*
+import kotlinx.serialization.json.Json
+import space.mori.chzzk_bot.webserver.routes.apiRoutes
+
+val server = embeddedServer(Netty, port = 8080) {
+    install(WebSockets)
+    install(ContentNegotiation) {
+        json(Json {
+            prettyPrint = true
+            isLenient = true
+        })
+    }
+    install(CORS) {
+        anyHost()
+        allowHeader(HttpHeaders.ContentType)
+    }
+    routing {
+        apiRoutes()
+        swaggerUI("swagger-ui/index.html", "openapi/documentation.yaml") {
+            options {
+                version = "1.1.0"
+            }
+        }
+    }
+}
+
+fun start() {
+    server.start(wait = true)
+}
+
+fun stop() {
+    server.stop()
+}

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt

@@ -0,0 +1,19 @@
+package space.mori.chzzk_bot.webserver.routes
+
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+fun Routing.apiRoutes() {
+    route("/") {
+        get {
+            call.respondText("Hello World!", status = HttpStatusCode.OK)
+        }
+    }
+    route("/health") {
+        get {
+            call.respondText("OK", status= HttpStatusCode.OK)
+        }
+    }
+}

webserver/src/main/resources/openapi/documentation.yaml

@@ -0,0 +1,35 @@
+openapi: "3.1.0"
+info:
+  title: "chzzk_bot API"
+  description: "chzzk_bot API"
+  version: "1.0.0"
+servers:
+- url: "http://localhost:8080"
+paths:
+  /:
+    get:
+      summary: "Webroot"
+      description: "Main page of this api"
+      responses:
+        "200":
+          description: "OK"
+          content:
+            text/plain:
+              schema:
+                type: "string"
+              examples:
+                Example#1:
+                  value: "Hello World!"
+  /health:
+    get:
+      description: "Health Check endpoint"
+      responses:
+        "200":
+          description: "OK"
+          content:
+            text/plain:
+              schema:
+                type: "string"
+              examples:
+                Example#1:
+                  value: "OK"