lab9

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.3</version>
+        <relativePath/>
+    </parent>
+
+    <groupId>com.ironhack</groupId>
+    <artifactId>lab-java-springboot-rest-api</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>lab-java-springboot-rest-api</name>
+    <description>lab-java-springboot-rest-api</description>
+
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/com/ironhack/GlobalExceptionHandler.java

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+package com.ironhack;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.MissingRequestHeaderException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import jakarta.servlet.ServletException;
+import org.springframework.util.MultiValueMap;
+import java.util.HashMap;
+import java.util.Map;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<Map<String, String>> handleValidationExceptions(MethodArgumentNotValidException ex) {
+        Map<String, String> errors = new HashMap<>();
+
+        ex.getBindingResult().getFieldErrors().forEach(error ->
+                errors.put(error.getField(), error.getDefaultMessage()));
+
+        return new ResponseEntity<>(errors, HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler(MissingRequestHeaderException.class)
+    public ResponseEntity<Map<String, String>> handleMissingHeader(MissingRequestHeaderException ex) {
+        Map<String, String> error = new HashMap<>();
+        error.put("error", "Missing API-Key header. You must provide the 'API-Key' in your request headers.");
+        return new ResponseEntity<>(error, HttpStatus.UNAUTHORIZED);
+    }
+
+    @ExceptionHandler(RuntimeException.class)
+    public ResponseEntity<Map<String, String>> handleRuntimeExceptions(RuntimeException ex) {
+        Map<String, String> error = new HashMap<>();
+        String message = ex.getMessage();
+        error.put("error", message);
+
+        if (message.contains("not found")) {
+            return new ResponseEntity<>(error, HttpStatus.NOT_FOUND);
+        } else if (message.contains("Invalid API Key")) {
+            return new ResponseEntity<>(error, HttpStatus.UNAUTHORIZED);
+        } else if (message.contains("Invalid price range")) {
+            return new ResponseEntity<>(error, HttpStatus.BAD_REQUEST);
+        }
+
+        return new ResponseEntity<>(error, HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+}

src/main/java/com/ironhack/SpringbootApplication.java

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+package com.ironhack;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringbootApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringbootApplication.class, args);
+    }
+
+}

src/main/java/com/ironhack/controllers/CustomerController.java

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+package com.ironhack.controllers;
+
+import com.ironhack.models.Customer;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+@RequestMapping("/customers")
+public class CustomerController {
+
+
+    private final List<Customer> customers = new ArrayList<>();
+
+    @PostMapping
+    @ResponseStatus(HttpStatus.CREATED)
+    public Customer createCustomer(@Valid @RequestBody Customer customer) {
+        customers.add(customer);
+        return customer;
+    }
+
+    @GetMapping
+    public List<Customer> getAllCustomers() {
+        return customers;
+    }
+
+    @GetMapping("/{email}")
+    public Customer getCustomerByEmail(@PathVariable String email) {
+        Optional<Customer> customer = customers.stream()
+                .filter(c -> c.getEmail().equalsIgnoreCase(email))
+                .findFirst();
+
+        if (customer.isEmpty()) {
+            throw new RuntimeException("Customer not found");
+        }
+        return customer.get();
+    }
+
+    @PutMapping("/{email}")
+    public Customer updateCustomer(@PathVariable String email, @Valid @RequestBody Customer updatedCustomer) {
+        Optional<Customer> existing = customers.stream()
+                .filter(c -> c.getEmail().equalsIgnoreCase(email))
+                .findFirst();
+
+        if (existing.isEmpty()) {
+            throw new RuntimeException("Customer not found");
+        }
+
+        Customer c = existing.get();
+        c.setName(updatedCustomer.getName());
+        c.setAge(updatedCustomer.getAge());
+        c.setAddress(updatedCustomer.getAddress());
+        return c;
+    }
+
+    @DeleteMapping("/{email}")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void deleteCustomer(@PathVariable String email) {
+        boolean deleted = customers.removeIf(c -> c.getEmail().equalsIgnoreCase(email));
+        if (!deleted) {
+            throw new RuntimeException("Customer not found");
+        }
+    }
+}

src/main/java/com/ironhack/controllers/ProductController.java

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+package com.ironhack.controllers;
+
+import com.ironhack.models.Product;
+import com.ironhack.services.ProductService;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+@RequestMapping("/products")
+public class ProductController {
+
+    private final ProductService productService;
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    private void validateApiKey(String apiKey) {
+        if (!"123456".equals(apiKey)) {
+            throw new RuntimeException("Invalid API Key");
+        }
+    }
+
+    @PostMapping
+    @ResponseStatus(HttpStatus.CREATED)
+    public Product createProduct(@RequestHeader("API-Key") String apiKey, @Valid @RequestBody Product product) {
+        validateApiKey(apiKey);
+        return productService.addProduct(product);
+    }
+
+    @GetMapping
+    public List<Product> getAllProducts(@RequestHeader("API-Key") String apiKey) {
+        validateApiKey(apiKey);
+        return productService.getAllProducts();
+    }
+
+    @GetMapping("/{name}")
+    public Product getProductByName(@RequestHeader("API-Key") String apiKey, @PathVariable String name) {
+        validateApiKey(apiKey);
+        Optional<Product> product = productService.getProductByName(name);
+
+        if (product.isEmpty()) {
+            throw new RuntimeException("Product not found");
+        }
+        return product.get();
+    }
+
+    @PutMapping("/{name}")
+    public Product updateProduct(@RequestHeader("API-Key") String apiKey, @PathVariable String name, @Valid @RequestBody Product product) {
+        validateApiKey(apiKey);
+        Product updated = productService.updateProduct(name, product);
+
+        if (updated == null) {
+            throw new RuntimeException("Product not found");
+        }
+        return updated;
+    }
+
+    @DeleteMapping("/{name}")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void deleteProduct(@RequestHeader("API-Key") String apiKey, @PathVariable String name) {
+        validateApiKey(apiKey);
+        boolean deleted = productService.deleteProduct(name);
+        if (!deleted) {
+            throw new RuntimeException("Product not found");
+        }
+    }
+
+    @GetMapping("/category/{category}")
+    public List<Product> getProductsByCategory(@RequestHeader("API-Key") String apiKey, @PathVariable String category) {
+        validateApiKey(apiKey);
+        return productService.getProductsByCategory(category);
+    }
+
+    @GetMapping("/price")
+    public List<Product> getProductsByPriceRange(
+            @RequestHeader("API-Key") String apiKey,
+            @RequestParam double min,
+            @RequestParam double max) {
+
+        validateApiKey(apiKey);
+
+        if (min < 0 || max < 0 || min > max) {
+            throw new RuntimeException("Invalid price range");
+        }
+
+        return productService.getProductsByPriceRange(min, max);
+    }
+}

src/main/java/com/ironhack/models/Customer.java

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+package com.ironhack.models;
+
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
+
+public class Customer {
+
+    @NotBlank(message = "Name cannot be blank")
+    private String name;
+
+    @NotBlank(message = "Email is required")
+    @Email(message = "Must be a valid email fromat")
+    private String email;
+
+    @Min(value = 18, message = "Age must be at least 18")
+    private int age;
+
+    @NotBlank(message = "Adres cannot be blank")
+    private String address;
+
+    public Customer(String name, String email, int age, String address) {
+        this.name = name;
+        this.email = email;
+        this.age = age;
+        this.address = address;
+
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() { return email; }
+    public void setEmail(String email) { this.email = email; }
+
+    public int getAge() { return age; }
+    public void setAge(int age) { this.age = age; }
+
+    public String getAddress() { return address; }
+    public void setAddress(String address) { this.address = address; }
+}

src/main/java/com/ironhack/models/Product.java

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+package com.ironhack.models;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Positive;
+import jakarta.validation.constraints.Size;
+
+public class Product {
+    @NotBlank(message = "Name cannot be blank")
+    @Size(min = 3, message = "Name must be at least 3 caracters long")
+    private String name;
+
+    @Positive(message = "Price must be a positive number")
+    private double price;
+
+    @NotBlank(message = "Quantity must be a positive number")
+    private String category;
+
+    @Positive(message = "Guality must be a positive number")
+    private int quantity;
+
+    public Product(String name, double price, String category, int quantity){
+        this.name = name;
+        this.price = price;
+        this.category = category;
+        this.quantity =quantity;
+    }
+
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public double getPrice() { return price; }
+    public void setPrice(double price) { this.price = price; }
+
+    public String getCategory() { return category; }
+    public void setCategory(String category) { this.category = category; }
+
+    public int getQuantity() { return quantity; }
+    public void setQuantity(int quantity) { this.quantity = quantity; }
+}