application/src/main/java/com/techivw/webprice/application/ports/in/PriceServicePort.java

@@ -0,0 +1,11 @@
+package com.techivw.webprice.application.ports.in;
+
+import com.techivw.webprice.domain.Price;
+
+import java.time.LocalDateTime;
+
+public interface PriceServicePort {
+
+    Price getPriceWithHighestPriorityByDateTimeAndProductIdAndBrandId(LocalDateTime dateTime, Long productId, Long brandId);
+
+}

application/src/main/java/com/techivw/webprice/application/ports/out/PriceRepositoryPort.java

@@ -0,0 +1,12 @@
+package com.techivw.webprice.application.ports.out;
+
+import com.techivw.webprice.domain.Price;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+
+public interface PriceRepositoryPort {
+
+    Optional<Price> findHighestPriorityPriceByDateTimeAndProductIdAndBrandId(LocalDateTime dateTime, Long productId, Long brandId);
+    
+}

application/src/main/java/com/techivw/webprice/application/services/PriceService.java

@@ -0,0 +1,21 @@
+package com.techivw.webprice.application.services;
+
+import com.techivw.webprice.application.ports.in.PriceServicePort;
+import com.techivw.webprice.application.ports.out.PriceRepositoryPort;
+import com.techivw.webprice.domain.Price;
+import lombok.AllArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+
+@Service
+@AllArgsConstructor
+public class PriceService implements PriceServicePort {
+
+    PriceRepositoryPort priceRepositoryPort;
+
+    @Override
+    public Price getPriceWithHighestPriorityByDateTimeAndProductIdAndBrandId(LocalDateTime dateTime, Long productId, Long brandId) {
+        return priceRepositoryPort.findHighestPriorityPriceByDateTimeAndProductIdAndBrandId(dateTime, productId, brandId).orElse(null);
+    }
+}

boot/src/main/resources/application.properties

@@ -1 +1,12 @@
 spring.application.name=webprice
+
+# Database Configuration
+spring.datasource.url=jdbc:h2:mem:webprice
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=admin
+spring.datasource.password=admin
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+
+# H2 console
+spring.h2.console.enabled=true
+spring.h2.console.path=/h2-console

domain/src/main/java/com/techivw/webprice/domain/Price.java

@@ -0,0 +1,23 @@
+package com.techivw.webprice.domain;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+public class Price {
+
+    private Long id;
+    private Long brandId;
+    private LocalDateTime startDate;
+    private LocalDateTime endDate;
+    private Long priceList;
+    private Long productId;
+    private Integer priority;
+    private BigDecimal price;
+    private String currency;
+
+}

infrastructure/in/rest-api/src/main/java/com/techivw/webprice/infrastructure/in/controllers/adapters/PriceControllerAdapter.java

@@ -0,0 +1,59 @@
+package com.techivw.webprice.infrastructure.in.controllers.adapters;
+
+import com.techivw.webprice.application.ports.in.PriceServicePort;
+import com.techivw.webprice.domain.Price;
+import com.techivw.webprice.infrastructure.in.controllers.model.PriceResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+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 lombok.AllArgsConstructor;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.time.LocalDateTime;
+
+@RestController
+@AllArgsConstructor
+@RequestMapping("/price")
+public class PriceControllerAdapter {
+
+    private PriceServicePort priceServicePort;
+
+    @GetMapping
+    @Operation(
+            summary = "Get product price",
+            description = "Returns the current price for a specific product from a particular brand at a given date and time"
+    )
+    @ApiResponse(
+            responseCode = "200",
+            description = "Price information found",
+            content = @Content(mediaType = "application/json", schema = @Schema(implementation = PriceResponse.class))
+    )
+    @ApiResponse(responseCode = "404", description = "Price information not found for the given parameters")
+    @ApiResponse(responseCode = "400", description = "Invalid request parameters")
+    public ResponseEntity<PriceResponse> getPrice(
+            @Parameter(description = "Date and time for price lookup (ISO format)", example = "2025-04-30T12:00:00")
+            @RequestParam(name = "dateTime") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime dateTime,
+            @Parameter(description = "Product ID", example = "35455")
+            @RequestParam(name = "productId") Long productId,
+            @Parameter(description = "Brand ID", example = "1")
+            @RequestParam(name = "brandId")  Long brandId) {
+
+        Price price = priceServicePort.getPriceWithHighestPriorityByDateTimeAndProductIdAndBrandId(dateTime, productId, brandId);
+        PriceResponse priceResponse = PriceResponse.builder()
+                .productId(price.getProductId())
+                .brandId(price.getBrandId())
+                .priceList(price.getPriceList())
+                .startDate(price.getStartDate())
+                .endDate(price.getEndDate())
+                .price(price.getPrice())
+                .build();
+        return ResponseEntity.ok(priceResponse);
+    }
+}

infrastructure/in/rest-api/src/main/java/com/techivw/webprice/infrastructure/in/controllers/model/PriceResponse.java

@@ -0,0 +1,17 @@
+package com.techivw.webprice.infrastructure.in.controllers.model;
+
+import lombok.Builder;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+@Builder
+public class PriceResponse {
+
+    private Long productId;
+    private Long brandId;
+    private Long priceList;
+    private LocalDateTime startDate;
+    private LocalDateTime endDate;
+    private BigDecimal price;
+}

infrastructure/out/sql-repository/src/main/java/com/techivw/webprice/infrastructure/repositories/PriceEntityJPARepository.java

@@ -0,0 +1,20 @@
+package com.techivw.webprice.infrastructure.repositories;
+
+import com.techivw.webprice.infrastructure.repositories.model.PriceEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+
+@Repository
+public interface PriceEntityJPARepository extends JpaRepository<PriceEntity, Long> {
+
+    @Query("SELECT p FROM PriceEntity p WHERE " +
+            "p.productId = :productId " +
+            "AND p.brandId = :brandId " +
+            "AND :dateTime BETWEEN p.startDate AND p.endDate " +
+            "ORDER BY p.priority DESC LIMIT 1")
+    Optional<PriceEntity> findPriceByDateTimeAndProductIdAndBrandId(LocalDateTime dateTime, Long productId, Long brandId);
+}

infrastructure/out/sql-repository/src/main/java/com/techivw/webprice/infrastructure/repositories/adapters/PriceRepositoryAdapter.java

@@ -0,0 +1,28 @@
+package com.techivw.webprice.infrastructure.repositories.adapters;
+
+import com.techivw.webprice.application.ports.out.PriceRepositoryPort;
+import com.techivw.webprice.domain.Price;
+import com.techivw.webprice.infrastructure.repositories.PriceEntityJPARepository;
+import com.techivw.webprice.infrastructure.repositories.mappers.PriceEntityMapper;
+import com.techivw.webprice.infrastructure.repositories.model.PriceEntity;
+import lombok.AllArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+
+@Service
+@AllArgsConstructor
+public class PriceRepositoryAdapter implements PriceRepositoryPort {
+
+    private final PriceEntityJPARepository repository;
+
+    @Override
+    public Optional<Price> findHighestPriorityPriceByDateTimeAndProductIdAndBrandId(LocalDateTime dateTime, Long productId, Long brandId) {
+
+        Optional<PriceEntity> priceEntity =
+                repository.findPriceByDateTimeAndProductIdAndBrandId(dateTime, productId, brandId);
+
+        return PriceEntityMapper.toOptionalPrice(priceEntity);
+    }
+}

infrastructure/out/sql-repository/src/main/java/com/techivw/webprice/infrastructure/repositories/mappers/PriceEntityMapper.java

@@ -0,0 +1,28 @@
+package com.techivw.webprice.infrastructure.repositories.mappers;
+
+import com.techivw.webprice.domain.Price;
+import com.techivw.webprice.infrastructure.repositories.model.PriceEntity;
+
+import java.util.Optional;
+
+public class PriceEntityMapper {
+
+    public static Price toPrice(PriceEntity priceEntity) {
+        return Price.builder()
+                .id(priceEntity.getId())
+                .brandId(priceEntity.getBrandId())
+                .startDate(priceEntity.getStartDate())
+                .endDate(priceEntity.getEndDate())
+                .priceList(priceEntity.getPriceList())
+                .productId(priceEntity.getProductId())
+                .priority(priceEntity.getPriority())
+                .price(priceEntity.getPrice())
+                .currency(priceEntity.getCurrency())
+                .build();
+    }
+
+    public static Optional<Price> toOptionalPrice(Optional<PriceEntity> priceEntity) {
+        return priceEntity.map(PriceEntityMapper::toPrice);
+    }
+
+}

infrastructure/out/sql-repository/src/main/java/com/techivw/webprice/infrastructure/repositories/model/PriceEntity.java

@@ -0,0 +1,47 @@
+package com.techivw.webprice.infrastructure.repositories.model;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+@Entity
+@Getter
+@Setter
+@Table(name = "prices")
+public class PriceEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "brand_id")
+    private Long brandId;
+
+    @Column(name = "start_date")
+    @Temporal(TemporalType.TIMESTAMP)
+    private LocalDateTime startDate;
+
+    @Column(name = "end_date")
+    @Temporal(TemporalType.TIMESTAMP)
+    private LocalDateTime endDate;
+
+    @Column(name = "price_list")
+    private Long priceList;
+
+    @Column(name = "product_id")
+    private Long productId;
+
+    @Column(name = "priority")
+    private Integer priority;
+
+    @Column(name = "price")
+    private BigDecimal price;
+
+    @Column(name = "currency")
+    private String currency;
+
+}

pom.xml

@@ -38,13 +38,22 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-data-jpa</artifactId>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+			<version>2.8.6</version>
 		</dependency>
 	</dependencies>
 </project>