R. Yusup

pom.xml

@@ -54,6 +54,15 @@
 			<artifactId>spring-boot-starter-webclient-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>software.amazon.awssdk</groupId>
+			<artifactId>s3</artifactId>
+			<version>2.25.0</version>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-webmvc-test</artifactId>

src/main/java/net/hackyourfuture/hyfshop/product/B2Config.java

@@ -0,0 +1,44 @@
+package net.hackyourfuture.hyfshop.product;
+
+import java.net.URI;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
+import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.s3.S3Client;
+import software.amazon.awssdk.services.s3.presigner.S3Presigner;
+
+
+@Configuration
+public class B2Config {
+
+    @Value("${b2.endpoint}") private String endpoint;
+    @Value("${b2.region}")   private String region;
+    @Value("${b2.access-key}") private String accessKey;
+    @Value("${b2.secret-key}") private String secretKey;
+
+    @Bean
+    public S3Client s3Client() {
+        return S3Client.builder()
+                .credentialsProvider(StaticCredentialsProvider.create(
+                        AwsBasicCredentials.create(accessKey, secretKey)))
+                .endpointOverride(URI.create(endpoint))
+                .region(Region.of(region))
+                .build();
+    }
+
+    @Bean
+    public S3Presigner s3Presigner() {
+        return S3Presigner.builder()
+                .credentialsProvider(StaticCredentialsProvider.create(
+                        AwsBasicCredentials.create(accessKey, secretKey)))
+                .endpointOverride(URI.create(endpoint))
+                .region(Region.of(region))
+                .build();
+    }
+}
+

src/main/java/net/hackyourfuture/hyfshop/product/FileService.java

@@ -0,0 +1,68 @@
+package net.hackyourfuture.hyfshop.product;
+
+import java.time.Duration;
+import java.util.UUID;
+
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import org.springframework.beans.factory.annotation.Value;
+
+import software.amazon.awssdk.core.sync.RequestBody;
+import software.amazon.awssdk.services.s3.S3Client;
+import software.amazon.awssdk.services.s3.model.DeleteObjectRequest;
+import software.amazon.awssdk.services.s3.model.PutObjectRequest;
+import software.amazon.awssdk.services.s3.presigner.S3Presigner;
+import software.amazon.awssdk.services.s3.presigner.model.GetObjectPresignRequest;
+
+@Service
+public class FileService {
+
+    private final S3Client s3Client;
+    private final S3Presigner s3Presigner;
+
+    @Value("${b2.bucket}")
+    private String bucket;
+
+    @Value("${b2.endpoint}")
+    private String endpoint;
+
+    public FileService(S3Client s3Client, S3Presigner s3Presigner) {
+        this.s3Client = s3Client;
+        this.s3Presigner = s3Presigner;
+    }
+
+    // Upload — returns the public URL to save in your database
+    public String upload(MultipartFile file) throws Exception {
+        String key = "uploads/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
+        s3Client.putObject(
+                PutObjectRequest.builder()
+                        .bucket(bucket).key(key)
+                        .contentType(file.getContentType()).build(),
+                RequestBody.fromInputStream(file.getInputStream(), file.getSize())
+        );
+        // https://s3.us-west-004.backblazeb2.com/file/restapitest/uploads/620fab18-34fc-46c6-9292-ee57f7bebbfc-example.svg
+        return endpoint + "/file/" + bucket + "/" + key;
+    }
+
+    // Presigned URL — expires after given minutes
+    public String getLink(String key, int minutes) {
+        return s3Presigner.presignGetObject(
+                GetObjectPresignRequest.builder()
+                        .signatureDuration(Duration.ofMinutes(minutes))
+                        .getObjectRequest(r -> r.bucket(bucket).key(key))
+                        .build()
+        ).url().toString();
+    }
+
+    // Delete — accepts the stored public URL (or a raw key)
+    public void delete(String urlOrKey) {
+        String prefix = endpoint + "/file/" + bucket + "/";
+        String key = urlOrKey.startsWith(prefix) ? urlOrKey.substring(prefix.length()) : urlOrKey;
+        s3Client.deleteObject(
+                DeleteObjectRequest.builder()
+                        .bucket(bucket).key(key).build()
+        );
+    }
+}
+

src/main/java/net/hackyourfuture/hyfshop/product/Product.java

@@ -6,6 +6,7 @@
 import lombok.Setter;
 
 import java.math.BigDecimal;
+import java.util.Map;
 
 @AllArgsConstructor
 @NoArgsConstructor
@@ -17,4 +18,5 @@ public class Product {
     private BigDecimal price;
     private String category;
     private String imageUrl;
+    private Map<String, Object> details;
 }

src/main/java/net/hackyourfuture/hyfshop/product/ProductRepository.java

@@ -5,33 +5,47 @@
 import org.springframework.jdbc.core.simple.JdbcClient;
 import org.springframework.stereotype.Repository;
 import java.util.List;
+import java.util.Map;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.core.type.TypeReference;
 
 @Repository
 @AllArgsConstructor
 public class ProductRepository {
     private final JdbcClient jdbcClient;
+    private static final ObjectMapper objectMapper = new ObjectMapper();
 
     public static final RowMapper<Product> PRODUCT_ROW_MAPPER = (rs, _) -> {
+
         var product = new Product();
         product.setId(rs.getInt("id"));
         product.setTitle(rs.getString("title"));
         product.setPrice(rs.getBigDecimal("price"));
         product.setCategory(rs.getString("category"));
         product.setImageUrl(rs.getString("image_url"));
+        try {
+            String json = rs.getString("details");
+            if (json != null) {
+                product.setDetails(objectMapper.readValue(json,
+                        new TypeReference<Map<String, Object>>() {}));
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
         return product;
     };
 
     public List<Product> getAllProducts() {
         return jdbcClient
-                .sql("SELECT id, title, price, category, image_url FROM products")
+                .sql("SELECT id, title, price, category, image_url, details FROM products")
                 .query(PRODUCT_ROW_MAPPER)
                 .list();
 
     }
 
     public Product findById(int id) {
         return jdbcClient
-                .sql("SELECT id, title, price, category, image_url FROM products WHERE id = :id")
+                .sql("SELECT id, title, price, category, image_url, details FROM products WHERE id = :id")
                 .param("id", id)
                 .query(PRODUCT_ROW_MAPPER)
                 .single();
@@ -49,12 +63,25 @@ public void setImageUrl(int id, String imageUrl) {
     }
 
     public List<Product> findByColor(String color) {
-        // TODO: Implement
-        throw new UnsupportedOperationException("Not implemented yet");
+        return jdbcClient.sql("""
+                        SELECT id, title, price, category, image_url, details
+                        FROM products
+                        WHERE details ->> 'color' = :color
+                        LIMIT 10
+                        """)
+                .param("color", color)
+                .query(PRODUCT_ROW_MAPPER)
+                .list();
     }
 
-    public Product setSize(int id, String size) {
-        // TODO: Implement
-        throw new UnsupportedOperationException("Not implemented yet");
+    public void setSize(int id, String size) {
+    jdbcClient.sql("""
+                    UPDATE products
+                    SET details = jsonb_set(details, '{size}', to_jsonb(:size::text))
+                    WHERE id = :id
+                    """)
+            .param("id", id)
+            .param("size", size)
+            .update();
     }
 }

src/main/java/net/hackyourfuture/hyfshop/product/ProductService.java

@@ -11,6 +11,7 @@
 @RequiredArgsConstructor
 public class ProductService {
     private final ProductRepository productRepository;
+    private final FileService fileService;
 
     public List<ProductResponse> getAllProducts() {
         return productRepository.getAllProducts().stream().map(ProductResponse::from).toList();
@@ -26,14 +27,23 @@ public ProductResponse setProductSize(int id, String size) {
     }
 
     public ProductResponse setProductImage(int id, MultipartFile file) {
-        // TODO: Implement
-        // call ProductRepository.setImageUrl() afterwards with the new URL
-        throw new UnsupportedOperationException("Not implemented yet");
+        try {
+            String key = fileService.upload(file);   // uploads to B2, returns the object key
+            productRepository.setImageUrl(id, key);   // save the key in the DB
+            return ProductResponse.from(productRepository.findById(id));
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to upload product image", e);
+        }
     }
-
+    
     public ProductResponse deleteProductImage(int id) {
-        // TODO: Implement
-        // call ProductRepository.setImageUrl() to set the image url to null
-        throw new UnsupportedOperationException("Not implemented yet");
+        Product product = productRepository.findById(id);
+        String key = product.getImageUrl();
+        if (key != null) {
+        fileService.delete(key); 
     }
+        productRepository.setImageUrl(id, null);   // clear the column
+        return ProductResponse.from(productRepository.findById(id));
+
+        }
 }

src/main/java/net/hackyourfuture/hyfshop/product/dto/ProductResponse.java

@@ -3,21 +3,25 @@
 import net.hackyourfuture.hyfshop.product.Product;
 
 import java.math.BigDecimal;
+import java.util.Map;
 
 public record ProductResponse (
         int id,
         String title,
         BigDecimal price,
         String category,
-        String imageUrl
+        String imageUrl,
+        Map<String, Object> details
+
 ){
     public static ProductResponse from(Product product) {
         return new ProductResponse(
                 product.getId(),
                 product.getTitle(),
                 product.getPrice(),
                 product.getCategory(),
-                product.getImageUrl()
+                product.getImageUrl(),
+                product.getDetails()
         );
     }
 }

src/main/resources/application.yaml

@@ -2,8 +2,20 @@ spring:
   application:
     name: hyf_shop
   datasource:
-    url: '${DB_URL}'
-    username: '${DB_USERNAME}'
-    password: '${DB_PASSWORD}'
+    url: jdbc:postgresql://localhost:5432/hyfshop
+    username: YOUR_USER_NAME
+    password: YOUR_PASSWORD
+
+  sql:
+    init:
+      # runs schema.sql automatically every time the app starts
+      mode: always
 server:
   port: '8080'
+
+b2:
+  endpoint: https://s3.us-west-004.backblazeb2.com
+  region: us-west-004
+  access-key: YOUR_KEY_ID
+  secret-key: YOUR_APPLICATION_KEY
+  bucket: YOUR_BUCKET_NAME