Sulaiman

pom.xml

@@ -10,7 +10,7 @@
 	</parent>
 	<groupId>com.oraclequantapi</groupId>
 	<artifactId>oraclequantapi</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>0.0.1</version>
 	<name/>
 	<description/>
 	<url/>
@@ -35,6 +35,23 @@
 			<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>
+			<scope>runtime</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>com.oracle.database.jdbc</groupId>
+			<artifactId>ojdbc11</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

src/main/java/com/example/pkc_api/PackageMeasurementApiApplication.java

@@ -0,0 +1,12 @@
+package com.example.pkc_api;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class PackageMeasurementApiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(PackageMeasurementApiApplication.class, args);
+    }
+}

src/main/java/com/example/pkc_api/config/CorsConfig.java

@@ -0,0 +1,17 @@
+package com.example.pkc_api.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class CorsConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedOrigins("*") // TODO: Restrict this for production.
+                .allowedMethods("GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS")
+                .allowedHeaders("*");
+    }
+}

src/main/java/com/example/pkc_api/controller/HistoryController.java

@@ -0,0 +1,53 @@
+package com.example.pkc_api.controller;
+
+
+import com.example.pkc_api.dto.UpdateHistoryRequest;
+import com.example.pkc_api.entity.SequenceHistory;
+import com.example.pkc_api.service.HistoryService;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/history")
+public class HistoryController {
+
+    private final HistoryService historyService;
+
+    public HistoryController(HistoryService historyService) {
+        this.historyService = historyService;
+    }
+
+    @GetMapping
+    public List<SequenceHistory> getAllHistory() {
+        return historyService.getAllHistory();
+    }
+
+    @GetMapping("/{id}")
+    public SequenceHistory getHistoryById(@PathVariable UUID id) {
+        return historyService.getHistoryById(id);
+    }
+
+    @PatchMapping("/{id}")
+    public SequenceHistory updateHistory(
+            @PathVariable UUID id,
+            @RequestBody UpdateHistoryRequest request
+    ) {
+        return historyService.updateHistory(id, request);
+    }
+
+    @PutMapping("/{id}")
+    public SequenceHistory replaceHistory(
+            @PathVariable UUID id,
+            @RequestBody UpdateHistoryRequest request
+    ) {
+        return historyService.updateHistory(id, request);
+    }
+
+    @DeleteMapping
+    public String clearHistory() {
+        historyService.clearHistory();
+        return "History cleared successfully.";
+    }
+}

src/main/java/com/example/pkc_api/controller/MeasurementController.java

@@ -0,0 +1,38 @@
+package com.example.pkc_api.controller;
+
+
+import com.example.pkc_api.service.HistoryService;
+import com.example.pkc_api.service.MeasurementConverter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+public class MeasurementController {
+
+    private static final Logger log = LoggerFactory.getLogger(MeasurementController.class);
+
+    private final MeasurementConverter measurementConverter;
+    private final HistoryService historyService;
+
+    public MeasurementController(MeasurementConverter measurementConverter, HistoryService historyService) {
+        this.measurementConverter = measurementConverter;
+        this.historyService = historyService;
+    }
+
+    @GetMapping("/convert-measurements")
+    public List<Integer> convertMeasurements(
+            @RequestParam String input
+    ) {
+        List<Integer> output = measurementConverter.convertMeasurements(input);
+
+        historyService.saveHistory(input, output.toString());
+        log.info("Converted measurement inputLength={} output={}", input.length(), output);
+
+        return output;
+    }
+}

src/main/java/com/example/pkc_api/dto/UpdateHistoryRequest.java

@@ -0,0 +1,23 @@
+package com.example.pkc_api.dto;
+
+public class UpdateHistoryRequest {
+
+    private String input;
+    private String output;
+
+    public String getInput() {
+        return input;
+    }
+
+    public String getOutput() {
+        return output;
+    }
+
+    public void setInput(String input) {
+        this.input = input;
+    }
+
+    public void setOutput(String output) {
+        this.output = output;
+    }
+}

src/main/java/com/example/pkc_api/entity/SequenceHistory.java

@@ -0,0 +1,65 @@
+package com.example.pkc_api.entity;
+
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Entity
+@Table(name = "sequence_history")
+@SuppressWarnings("unused")
+public class SequenceHistory {
+
+    @Id
+    @Column(nullable = false, updatable = false)
+    private UUID id = UUID.randomUUID();
+
+    private LocalDateTime timestamp;
+
+    @Column(length = 2000)
+    private String input;
+
+    @Column(length = 2000)
+    private String output;
+
+    public SequenceHistory() {
+    }
+
+    public SequenceHistory(LocalDateTime timestamp, String input, String output) {
+        this.timestamp = timestamp;
+        this.input = input;
+        this.output = output;
+    }
+
+    public UUID getId() {
+        return id;
+    }
+
+    public LocalDateTime getTimestamp() {
+        return timestamp;
+    }
+
+    public String getInput() {
+        return input;
+    }
+
+    public String getOutput() {
+        return output;
+    }
+
+    public void setTimestamp(LocalDateTime timestamp) {
+        this.timestamp = timestamp;
+    }
+
+    public void setInput(String input) {
+        this.input = input;
+    }
+
+    public void setOutput(String output) {
+        this.output = output;
+    }
+}

src/main/java/com/example/pkc_api/exception/HistoryRecordNotFoundException.java

@@ -0,0 +1,14 @@
+package com.example.pkc_api.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+import java.util.UUID;
+
+@ResponseStatus(HttpStatus.NOT_FOUND)
+public class HistoryRecordNotFoundException extends RuntimeException {
+
+    public HistoryRecordNotFoundException(UUID id) {
+        super("History record not found with id: " + id);
+    }
+}

src/main/java/com/example/pkc_api/parser/EncodedNumberParser.java

@@ -0,0 +1,53 @@
+package com.example.pkc_api.parser;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class EncodedNumberParser implements NumberParser {
+
+    @Override
+    public ParsedNumber parse(String input, int startIndex) {
+        if (input == null || startIndex >= input.length()) {
+            return new ParsedNumber(0, startIndex);
+        }
+
+        char current = input.charAt(startIndex);
+
+        if (isContinuationCharacter(current)) {
+            return parseMultiCharacterNumber(input, startIndex);
+        }
+
+        int value = getCharacterValue(current);
+        return new ParsedNumber(value, startIndex + 1);
+    }
+
+    private ParsedNumber parseMultiCharacterNumber(String input, int index) {
+        int total = 0;
+
+        while (index < input.length() && isContinuationCharacter(input.charAt(index))) {
+            total += 26;
+            index++;
+        }
+
+        if (index < input.length()) {
+            total += getCharacterValue(input.charAt(index));
+            index++;
+        }
+
+        return new ParsedNumber(total, index);
+    }
+
+    private int getCharacterValue(char character) {
+        character = Character.toLowerCase(character);
+
+        if (character >= 'a' && character <= 'z') {
+            return character - 'a' + 1;
+        }
+
+        return 0;
+    }
+
+    private boolean isContinuationCharacter(char character) {
+        return Character.toLowerCase(character) == 'z';
+    }
+}

src/main/java/com/example/pkc_api/parser/NumberParser.java

@@ -0,0 +1,6 @@
+package com.example.pkc_api.parser;
+
+public interface NumberParser {
+
+    ParsedNumber parse(String input, int startIndex);
+}

src/main/java/com/example/pkc_api/parser/ParsedNumber.java

@@ -0,0 +1,20 @@
+package com.example.pkc_api.parser;
+
+public class ParsedNumber {
+
+    private final int value;
+    private final int nextIndex;
+
+    public ParsedNumber(int value, int nextIndex) {
+        this.value = value;
+        this.nextIndex = nextIndex;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    public int getNextIndex() {
+        return nextIndex;
+    }
+}

src/main/java/com/example/pkc_api/repository/SequenceHistoryRepository.java

@@ -0,0 +1,10 @@
+package com.example.pkc_api.repository;
+
+
+import com.example.pkc_api.entity.SequenceHistory;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.UUID;
+
+public interface SequenceHistoryRepository extends JpaRepository<SequenceHistory, UUID> {
+}