refactor: move registration to admin scope

Signed-off-by: Alan Brault <alan.brault@visus.io>

src/main/kotlin/io/visus/demos/kotlinapi/config/SecurityConfig.kt

@@ -73,7 +73,6 @@ class SecurityConfig(
                         "/v1/health",
                         "/v1/auth/login",
                         "/v1/auth/refresh",
-                        "/v1/auth/register",
                     ).permitAll()
                     .anyExchange()
                     .authenticated()

src/main/kotlin/io/visus/demos/kotlinapi/controller/AdminController.kt

@@ -0,0 +1,61 @@
+package io.visus.demos.kotlinapi.controller
+
+import io.swagger.v3.oas.annotations.Operation
+import io.swagger.v3.oas.annotations.media.Content
+import io.swagger.v3.oas.annotations.media.Schema
+import io.swagger.v3.oas.annotations.responses.ApiResponse
+import io.swagger.v3.oas.annotations.responses.ApiResponses
+import io.swagger.v3.oas.annotations.security.SecurityRequirement
+import io.swagger.v3.oas.annotations.tags.Tag
+import io.visus.demos.kotlinapi.api.ApiVersion
+import io.visus.demos.kotlinapi.api.contracts.ErrorResponse
+import io.visus.demos.kotlinapi.api.contracts.RegisterRequest
+import io.visus.demos.kotlinapi.api.contracts.RegisterResponse
+import io.visus.demos.kotlinapi.domain.service.AuthService
+import jakarta.validation.Valid
+import org.springframework.http.MediaType
+import org.springframework.http.ResponseEntity
+import org.springframework.security.access.prepost.PreAuthorize
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@ApiVersion(version = 1)
+@Tag(name = "Admin", description = "Endpoints for admin operations")
+class AdminController(
+    private val authService: AuthService,
+) {
+    @PostMapping("/admin/users", produces = [MediaType.APPLICATION_JSON_VALUE])
+    @PreAuthorize("hasRole('ROLE_ADMIN')")
+    @Operation(
+        summary = "Register new user",
+        description = "Creates a new user account (Admin only)",
+        security = [SecurityRequirement(name = "bearerAuth")],
+    )
+    @ApiResponses(
+        value = [
+            ApiResponse(
+                responseCode = "201",
+                description = "User successfully registered",
+                content = [Content(schema = Schema(implementation = RegisterResponse::class))],
+            ),
+            ApiResponse(
+                responseCode = "400",
+                description = "Invalid request payload",
+                content = [Content(schema = Schema(implementation = ErrorResponse::class))],
+            ),
+            ApiResponse(
+                responseCode = "403",
+                description = "Forbidden, admin role required",
+                content = [Content(schema = Schema(implementation = ErrorResponse::class))],
+            ),
+        ],
+    )
+    suspend fun register(
+        @Valid @RequestBody request: RegisterRequest,
+    ): ResponseEntity<RegisterResponse> {
+        val user = authService.register(request.email, request.password)
+        return ResponseEntity.status(201).body(user)
+    }
+}

src/main/kotlin/io/visus/demos/kotlinapi/controller/AuthController.kt

@@ -12,8 +12,6 @@ import io.visus.demos.kotlinapi.api.contracts.AuthResponse
 import io.visus.demos.kotlinapi.api.contracts.ErrorResponse
 import io.visus.demos.kotlinapi.api.contracts.LoginRequest
 import io.visus.demos.kotlinapi.api.contracts.RefreshTokenRequest
-import io.visus.demos.kotlinapi.api.contracts.RegisterRequest
-import io.visus.demos.kotlinapi.api.contracts.RegisterResponse
 import io.visus.demos.kotlinapi.domain.exception.InvalidTokenException
 import io.visus.demos.kotlinapi.domain.model.User
 import io.visus.demos.kotlinapi.domain.service.AuthService
@@ -130,30 +128,4 @@ class AuthController(
         return ResponseEntity.ok(response)
     }
 
-    @PostMapping("/auth/register", produces = [MediaType.APPLICATION_JSON_VALUE])
-    @Operation(
-        summary = "Register new user",
-        description = "Creates a new user account",
-        security = [],
-    )
-    @ApiResponses(
-        value = [
-            ApiResponse(
-                responseCode = "201",
-                description = "User successfully registered",
-                content = [Content(schema = Schema(implementation = RegisterResponse::class))],
-            ),
-            ApiResponse(
-                responseCode = "400",
-                description = "Invalid request payload",
-                content = [Content(schema = Schema(implementation = ErrorResponse::class))],
-            ),
-        ],
-    )
-    suspend fun register(
-        @Valid @RequestBody request: RegisterRequest,
-    ): ResponseEntity<RegisterResponse> {
-        val user = authService.register(request.email, request.password)
-        return ResponseEntity.status(201).body(user)
-    }
 }