🏗 : add controller to manage natural routes for frontend

src/main/java/io/codeka/gaia/client/controller/ClientForwardController.kt

@@ -0,0 +1,12 @@
+package io.codeka.gaia.client.controller
+
+import org.springframework.stereotype.Controller
+import org.springframework.web.bind.annotation.RequestMapping
+
+@Controller
+class ClientForwardController {
+
+    @RequestMapping("/**/{path:[^\\.]*}")
+    fun redirect(): String = "forward:/"
+
+}

src/test/java/io/codeka/gaia/client/controller/ClientForwardControllerTest.kt

@@ -0,0 +1,47 @@
+package io.codeka.gaia.client.controller
+
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.springframework.http.MediaType
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers
+import org.springframework.test.web.servlet.setup.MockMvcBuilders
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+class ClientForwardControllerTest {
+
+    lateinit var mockMvc: MockMvc
+
+    @BeforeEach
+    fun setup() {
+        mockMvc = MockMvcBuilders
+            .standaloneSetup(ClientForwardController(), TestController())
+            .build()
+    }
+
+    @Test
+    fun `clientForwardController should forward to home page for unknown mapping`() {
+        mockMvc.perform(MockMvcRequestBuilders.get("/path/to/go"))
+            .andExpect(MockMvcResultMatchers.status().isOk)
+            .andExpect(MockMvcResultMatchers.forwardedUrl("/"))
+    }
+
+    @Test
+    fun `clientForwardController should ignore backend`() {
+        mockMvc.perform(MockMvcRequestBuilders.get("/api/test"))
+            .andExpect(MockMvcResultMatchers.status().isOk)
+            .andExpect(MockMvcResultMatchers.content().contentTypeCompatibleWith(MediaType.TEXT_PLAIN_VALUE))
+            .andExpect(MockMvcResultMatchers.content().string("test"))
+    }
+
+    @RestController
+    class TestController {
+
+        @RequestMapping("/api/test")
+        fun test(): String = "test"
+
+    }
+
+}