feature: Initial Implementation of lost-password api endpoint

Author: irfan-ikhwa

server/api-service/lowcoder-domain/src/main/java/org/lowcoder/domain/user/service/UserService.java

@@ -50,6 +50,8 @@ public interface UserService {
 
     Mono<String> resetPassword(String userId);
 
+    Mono<String> lostPassword(String userEmail);
+
     Mono<Boolean> setPassword(String userId, String password);
 
     Mono<UserDetail> buildUserDetail(User user, boolean withoutDynamicGroups);

server/api-service/lowcoder-domain/src/main/java/org/lowcoder/domain/user/service/UserServiceImpl.java

@@ -40,6 +40,8 @@
 
 import javax.annotation.Nonnull;
 import java.security.SecureRandom;
+import java.time.Duration;
+import java.time.LocalDate;
 import java.util.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -262,6 +264,14 @@ public Mono<String> resetPassword(String userId) {
                 });
     }
 
+    @Override
+    public Mono<String> lostPassword(String userEmail) {
+        return findByName(userEmail)
+                .flatMap(user -> {
+                    return Mono.justOrEmpty(user.getName());
+                });
+    }
+
     @SuppressWarnings("SpellCheckingInspection")
     @Nonnull
     private static String generateNewRandomPwd() {

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/usermanagement/UserApiService.java

@@ -65,6 +65,10 @@ public Mono<String> resetPassword(String userId) {
                 .then(userService.resetPassword(userId));
     }
 
+    public Mono<String> lostPassword(String userEmail) {
+        return userService.lostPassword(userEmail);
+    }
+
     // ========================== TOKEN OPERATIONS START ==========================
 
     public Mono<Void> saveToken(String userId, String source, String token) {

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/usermanagement/UserController.java

@@ -146,6 +146,15 @@ public Mono<ResponseView<String>> resetPassword(@RequestBody ResetPasswordReques
 
     }
 
+    @Override
+    public Mono<ResponseView<String>> lostPassword(@RequestBody LostPasswordRequest request) {
+        if (StringUtils.isBlank(request.userEmail())) {
+            return ofError(BizError.INVALID_PARAMETER, "INVALID_USER_EMAIL");
+        }
+        return userApiService.lostPassword(request.userEmail())
+                .map(ResponseView::success);
+    }
+
     @Override
     public Mono<ResponseView<Boolean>> setPassword(@RequestParam String password) {
         if (StringUtils.isBlank(password)) {

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/usermanagement/UserEndpoints.java

@@ -121,6 +121,9 @@ public interface UserEndpoints
     @PostMapping("/reset-password")
     public Mono<ResponseView<String>> resetPassword(@RequestBody ResetPasswordRequest request);
 
+	@PostMapping("/lost-password")
+	public Mono<ResponseView<String>> lostPassword(@RequestBody LostPasswordRequest userEmail);
+
 	@Operation(
 			tags = TAG_USER_PASSWORD_MANAGEMENT,
 		    operationId = "setPassword",
@@ -151,6 +154,9 @@ public interface UserEndpoints
     public record ResetPasswordRequest(String userId) {
     }
 
+	public record LostPasswordRequest(String userEmail) {
+	}
+
     public record UpdatePasswordRequest(String oldPassword, String newPassword) {
     }