feat: クエリパラメータでSSRを使用するかを切り替えれるように

SSRを使用するかの設定はセッショに保存され、次のアクセスから設定する必要はなくなるサーバーはとりあえずSPA用のindexページを送信し、noscriptを検知してクエリパラメータ付きのページに遷移する
2024-09-04 18:55:10 +09:00 · 2024-09-04 18:55:10 +09:00 · 4f9c431d9b
parent fec59ab622
commit 4f9c431d9b
3 changed files with 77 additions and 0 deletions
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/WebMvcConfig.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/WebMvcConfig.kt
@ -0,0 +1,13 @@
+package dev.usbharu.hideout.core.config
+
+import dev.usbharu.hideout.core.infrastructure.springframework.SPAInterceptor
+import org.springframework.context.annotation.Configuration
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer
+
+@Configuration
+class WebMvcConfig(private val spaInterceptor: SPAInterceptor) : WebMvcConfigurer {
+    override fun addInterceptors(registry: InterceptorRegistry) {
+        registry.addInterceptor(spaInterceptor)
+    }
+}
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/SPAInterceptor.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/SPAInterceptor.kt
@ -0,0 +1,46 @@
+package dev.usbharu.hideout.core.infrastructure.springframework
+
+import jakarta.servlet.http.HttpServletRequest
+import jakarta.servlet.http.HttpServletResponse
+import org.springframework.stereotype.Component
+import org.springframework.web.servlet.HandlerInterceptor
+import org.springframework.web.servlet.ModelAndView
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder
+
+@Component
+class SPAInterceptor : HandlerInterceptor {
+
+    override fun preHandle(request: HttpServletRequest, response: HttpServletResponse, handler: Any): Boolean {
+
+        if (request.getParameter("s") == "f") {
+            request.session.setAttribute("s", "f")
+        } else if (request.getParameter("s") == "t") {
+            request.session.setAttribute("s", "t")
+        }
+        return true
+    }
+
+    override fun postHandle(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        handler: Any,
+        modelAndView: ModelAndView?
+    ) {
+        if (request.session.getAttribute("s") == "f") {
+            return
+        }
+        val title = modelAndView?.modelMap?.getOrDefault("title", "")
+        val url = modelAndView?.modelMap?.getOrDefault(
+            "url",
+            ServletUriComponentsBuilder.fromCurrentRequestUri().toUriString() + '?' + request.queryString
+        )
+        val description = modelAndView?.modelMap?.getOrDefault("description", "")
+        val image = modelAndView?.modelMap?.get("image")
+
+        modelAndView?.clear()
+        modelAndView?.addObject("nsUrl", request.requestURI + "?s=f" + request.queryString?.let { "&$it" }.orEmpty())
+        modelAndView?.addAllObjects(mapOf("title" to title, "url" to url, "description" to description))
+        image?.let { modelAndView?.addObject("image", it) }
+        modelAndView?.viewName = "index"
+    }
+}
--- a/hideout-core/src/main/resources/templates/index.html
+++ b/hideout-core/src/main/resources/templates/index.html
@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head prefix="og: http://ogp.me/ns#">
+    <meta charset="UTF-8">
+    <title th:title="${title}">Title</title>
+    <meta property="og:url" th:content="${url}">
+    <meta property="og:title" th:content="${title}">
+    <meta property="og:description" th:content="${description}">
+    <th:block th:if="${image != null}">
+        <meta property="og:image" th:content="${image}">
+    </th:block>
+</head>
+<body>
+<noscript>
+    <a th:href="${nsUrl}">No Script</a>
+</noscript>
+</body>
+</html>