From 40358c80665f70e634416fc02716a01bb534439e Mon Sep 17 00:00:00 2001
From: Popov Aleksander <Aleksandr.A.Popov@rosbank.ru>
Date: Sun, 4 Feb 2024 04:07:22 +0600
Subject: [PATCH] RELL-1 add controller and handler

---
 pom.xml                                       | 35 +++++++++++++-
 .../rell/controller/RecognizeController.java  | 46 +++++++++++++++++++
 .../rell/handler/GlobalExceptionHandler.java  | 31 +++++++++++++
 .../handler/exception/CustomException.java    | 10 ++++
 4 files changed, 120 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/ru/rell/controller/RecognizeController.java
 create mode 100644 src/main/java/ru/rell/handler/GlobalExceptionHandler.java
 create mode 100644 src/main/java/ru/rell/handler/exception/CustomException.java

diff --git a/pom.xml b/pom.xml
index 89921a8..fcb03bd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,6 +26,11 @@
         <spring.boot.version>3.2.2</spring.boot.version>
         <jacoco.version>0.8.11</jacoco.version>
         <junit.version>5.10.1</junit.version>
+        <swagger-annotations.version>2.2.2</swagger-annotations.version>
+        <jackson-databind-nullable.version>0.2.2</jackson-databind-nullable.version>
+        <validation-api.version>2.0.1.Final</validation-api.version>
+        <javax-annotation-api.version>1.3.2</javax-annotation-api.version>
+        <springfox-swagger2.version>3.0.0</springfox-swagger2.version>
     </properties>
 
     <developers>
@@ -53,6 +58,7 @@
             <artifactId>spring-boot-starter-actuator</artifactId>
             <version>${spring.boot.version}</version>
         </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-hateoas</artifactId>
@@ -91,6 +97,33 @@
             <version>${version.mapstruct}</version>
         </dependency>
 
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>${swagger-annotations.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>${jackson-databind-nullable.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <version>${validation-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.annotation</groupId>
+            <artifactId>javax.annotation-api</artifactId>
+            <version>${javax-annotation-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-swagger2</artifactId>
+            <version>${springfox-swagger2.version}</version>
+        </dependency>
+
         <!-- test -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -105,7 +138,6 @@
             <version>${junit.version}</version>
             <scope>test</scope>
         </dependency>
-
     </dependencies>
 
     <build>
@@ -162,7 +194,6 @@
                     </execution>
                 </executions>
             </plugin>
-
         </plugins>
     </build>
 </project>
\ No newline at end of file
diff --git a/src/main/java/ru/rell/controller/RecognizeController.java b/src/main/java/ru/rell/controller/RecognizeController.java
new file mode 100644
index 0000000..c3b727f
--- /dev/null
+++ b/src/main/java/ru/rell/controller/RecognizeController.java
@@ -0,0 +1,46 @@
+package ru.rell.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ByteArrayResource;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+import ru.rell.handler.exception.CustomException;
+
+import java.io.IOException;
+
+@RestController
+@RequestMapping("api/v1/recognize")
+@RequiredArgsConstructor
+public class RecognizeController {
+
+    @Operation(
+            summary = "Распознование текста из фаила вернет txt; attachment; filename= имя фаила",
+            description = "Распознование текста из фаила вернет txt; attachment; filename= имя фаила"
+    )
+    @PostMapping(produces = MediaType.MULTIPART_FORM_DATA_VALUE)
+    public ResponseEntity<Resource> recognize(@RequestPart("file") MultipartFile file){
+        if (file.isEmpty()) {
+            return ResponseEntity.badRequest().build();
+        }
+
+        ByteArrayResource resource = null;
+        try {
+            resource = new ByteArrayResource(file.getBytes());
+        } catch (IOException e) {
+            throw new CustomException(e.getMessage(),e);
+        }
+        resource.getFilename();
+
+        return ResponseEntity.ok()
+                .contentType(MediaType.APPLICATION_OCTET_STREAM)
+                .header("Content-Disposition", "attachment; filename=\"" + file.getOriginalFilename() + "\"")
+                .body(resource);
+    }
+}
diff --git a/src/main/java/ru/rell/handler/GlobalExceptionHandler.java b/src/main/java/ru/rell/handler/GlobalExceptionHandler.java
new file mode 100644
index 0000000..8d4f2d3
--- /dev/null
+++ b/src/main/java/ru/rell/handler/GlobalExceptionHandler.java
@@ -0,0 +1,31 @@
+package ru.rell.handler;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.exception.ExceptionUtils;
+import org.springframework.boot.actuate.cache.NonUniqueCacheException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import ru.rell.handler.exception.CustomException;
+
+@ControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Object> handleGlobalException(Exception ex) {
+        log.error(ex.getMessage(), ExceptionUtils.getStackTrace(ex));
+        return ResponseEntity
+                .status(HttpStatus.INTERNAL_SERVER_ERROR)
+                .body("Сервис временно не доступен");
+    }
+
+    @ExceptionHandler(CustomException.class)
+    public ResponseEntity<Object> handleCustomException(CustomException ex) {
+        log.error(ex.getMessage(), ExceptionUtils.getStackTrace(ex));
+        return ResponseEntity
+                .status(HttpStatus.INTERNAL_SERVER_ERROR)
+                .body("Возникла ошибка при работе с сервисом");
+    }
+}
diff --git a/src/main/java/ru/rell/handler/exception/CustomException.java b/src/main/java/ru/rell/handler/exception/CustomException.java
new file mode 100644
index 0000000..2c34354
--- /dev/null
+++ b/src/main/java/ru/rell/handler/exception/CustomException.java
@@ -0,0 +1,10 @@
+package ru.rell.handler.exception;
+
+import lombok.Getter;
+
+@Getter
+public class CustomException extends RuntimeException {
+    public CustomException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}