Merge pull request 'develop' (#1) from develop into main

Reviewed-on: AdvancedProgramming1404/HW-03-oop-and-api#1
2026-04-24 14:58:11 +00:00
parent 196d6abe46 63eed8c84a
commit 5473658dc8
12 changed files with 650 additions and 0 deletions
@@ -0,0 +1,38 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="25" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
@@ -0,0 +1,32 @@
+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.to</groupId>
+    <artifactId>HW03</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>23</maven.compiler.source>
+        <maven.compiler.target>23</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <!-- GSON: Google JSON parsing library -->
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.11.0</version>
+        </dependency>
+
+        <!-- Jackson: Another JSON parsing library -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.17.2</version>
+        </dependency>
+    </dependencies>
+
+</project>
@@ -0,0 +1,108 @@
+package Rational;
+
+public class Rational {
+    private int numerator;
+    private int denominator;
+
+    // Constructor
+    public Rational(int numerator, int denominator) {
+        if (denominator == 0) {
+            throw new IllegalArgumentException("Denominator cannot be zero");
+        }
+        this.numerator = numerator;
+        this.denominator = denominator;
+        simplify();
+    }
+
+    // GCD helper for simplification
+    private int gcd(int a, int b) {
+        a = Math.abs(a);
+        b = Math.abs(b);
+        while (b != 0) {
+            int temp = b;
+            b = a % b;
+            a = temp;
+        }
+        return a;
+    }
+
+    // Simplify the fraction
+    private void simplify() {
+        int gcd = gcd(numerator, denominator);
+        numerator /= gcd;
+        denominator /= gcd;
+
+        // Keep denominator positive
+        if (denominator < 0) {
+            numerator = -numerator;
+            denominator = -denominator;
+        }
+    }
+
+    //  COMPLETED - Instance method: this + other
+    public Rational add(Rational other) {
+        int newNumerator = this.numerator * other.denominator + other.numerator * this.denominator;
+        int newDenominator = this.denominator * other.denominator;
+        return new Rational(newNumerator, newDenominator);
+    }
+
+    //  COMPLETED - Static method: r1 + r2
+    public static Rational add(Rational r1, Rational r2) {
+        return r1.add(r2);
+    }
+
+    // TODO: Instance method - this - other
+    // Formula: a/b - c/d = (a*d - c*b) / (b*d)
+    public Rational subtract(Rational other) {
+        // YOUR CODE HERE
+        return null; // Remove this line when implemented
+    }
+
+    // TODO: Static method - r1 - r2
+    public static Rational subtract(Rational r1, Rational r2) {
+        // YOUR CODE HERE
+        return null; // Remove this line when implemented
+    }
+
+    // TODO: Instance method - this * other
+    // Formula: (a/b) * (c/d) = (a*c) / (b*d)
+    public Rational multiply(Rational other) {
+        // YOUR CODE HERE
+        return null; // Remove this line when implemented
+    }
+
+    // TODO: Static method - r1 * r2
+    public static Rational multiply(Rational r1, Rational r2) {
+        // YOUR CODE HERE
+        return null; // Remove this line when implemented
+    }
+
+    // TODO: Instance method - this / other
+    // Formula: (a/b) ÷ (c/d) = (a*d) / (b*c)
+    public Rational divide(Rational other) {
+        // YOUR CODE HERE
+        // HINT: Division is multiplication by reciprocal
+        // Don't forget to check if other.numerator is zero!
+        return null; // Remove this line when implemented
+    }
+
+    // TODO: Static method - r1 / r2
+    public static Rational divide(Rational r1, Rational r2) {
+        // YOUR CODE HERE
+        return null; // Remove this line when implemented
+    }
+
+    //  PROVIDED - String representation
+    @Override
+    public String toString() {
+        if (denominator == 1) {
+            return numerator + "";
+        }
+        return numerator + "/" + denominator;
+    }
+
+    //  PROVIDED - Decimal value
+    public double toDouble() {
+        return (double) numerator / denominator;
+    }
+}
@@ -0,0 +1,108 @@
+package Rational;
+
+public class RationalTest {
+    public static void main(String[] args) {
+        System.out.println("=== Testing Rational Operations ===\n");
+
+        // Create some rational numbers
+        Rational r1 = new Rational(1, 2);   // 1/2
+        Rational r2 = new Rational(1, 3);   // 1/3
+        Rational r3 = new Rational(3, 4);   // 3/4
+        Rational r4 = new Rational(2, 5);   // 2/5
+        Rational r5 = new Rational(5, 1);   // 5 (integer)
+
+        System.out.println("Created rational numbers:");
+        System.out.println("r1 = " + r1);
+        System.out.println("r2 = " + r2);
+        System.out.println("r3 = " + r3);
+        System.out.println("r4 = " + r4);
+        System.out.println("r5 = " + r5);
+        System.out.println();
+
+        // Test ADDITION
+        System.out.println("=== ADDITION ===");
+        System.out.println("Instance method - r1 + r2 = " + r1.add(r2));
+        System.out.println("Static method - Rational.add(r1, r2) = " + Rational.add(r1, r2));
+        System.out.println("Expected: 1/2 + 1/3 = 5/6");
+        System.out.println("Decimal: " + r1.add(r2).toDouble());
+        System.out.println();
+
+        // Test SUBTRACTION
+        System.out.println("=== SUBTRACTION ===");
+        System.out.println("Instance method - r1 - r2 = " + r1.subtract(r2));
+        System.out.println("Static method - Rational.subtract(r1, r2) = " + Rational.subtract(r1, r2));
+        System.out.println("Expected: 1/2 - 1/3 = 1/6");
+        System.out.println("Decimal: " + r1.subtract(r2).toDouble());
+        System.out.println();
+
+        // Test MULTIPLICATION
+        System.out.println("=== MULTIPLICATION ===");
+        System.out.println("Instance method - r1 * r3 = " + r1.multiply(r3));
+        System.out.println("Static method - Rational.multiply(r1, r3) = " + Rational.multiply(r1, r3));
+        System.out.println("Expected: 1/2 * 3/4 = 3/8");
+        System.out.println("Decimal: " + r1.multiply(r3).toDouble());
+        System.out.println();
+
+        // Test DIVISION
+        System.out.println("=== DIVISION ===");
+        System.out.println("Instance method - r1 ÷ r2 = " + r1.divide(r2));
+        System.out.println("Static method - Rational.divide(r1, r2) = " + Rational.divide(r1, r2));
+        System.out.println("Expected: 1/2 ÷ 1/3 = 3/2");
+        System.out.println("Decimal: " + r1.divide(r2).toDouble());
+        System.out.println();
+
+        // Test with negative numbers
+        System.out.println("=== NEGATIVE NUMBERS ===");
+        Rational neg1 = new Rational(-2, 3);
+        Rational neg2 = new Rational(4, -5);
+        System.out.println("neg1 = " + neg1);  // Should show -2/3
+        System.out.println("neg2 = " + neg2);  // Should show -4/5
+        System.out.println("neg1 + neg2 = " + neg1.add(neg2));
+        System.out.println("-2/3 + -4/5 = (-10/15 + -12/15) = -22/15");
+        System.out.println("neg1 * neg2 = " + neg1.multiply(neg2));
+        System.out.println("(-2/3) * (-4/5) = 8/15");
+        System.out.println();
+
+        // Test simplification
+        System.out.println("=== SIMPLIFICATION ===");
+        Rational r6 = new Rational(6, 8);
+        Rational r7 = new Rational(10, 25);
+        Rational r8 = new Rational(18, -24);
+        System.out.println("6/8 simplified = " + r6);
+        System.out.println("10/25 simplified = " + r7);
+        System.out.println("18/-24 simplified = " + r8);
+        System.out.println();
+
+        // Test chaining operations
+        System.out.println("=== CHAINING OPERATIONS ===");
+        Rational result = r1.add(r2).multiply(r3).divide(r4);
+        System.out.println("((r1 + r2) * r3) ÷ r4 = " + result);
+        System.out.println("((1/2 + 1/3) * 3/4) ÷ 2/5 = (5/6 * 3/4) ÷ 2/5 = (15/24) ÷ 2/5 = 15/24 * 5/2 = 75/48 = 25/16");
+        System.out.println("Decimal: " + result.toDouble());
+        System.out.println();
+
+        // Test integer handling
+        System.out.println("=== INTEGER HANDLING ===");
+        System.out.println("r5 = " + r5);  // Should show 5, not 5/1
+        System.out.println("r5 + r1 = " + r5.add(r1));
+        System.out.println("5 + 1/2 = 11/2");
+        System.out.println("r1 * r5 = " + r1.multiply(r5));
+        System.out.println("1/2 * 5 = 5/2");
+        System.out.println();
+
+        // Test exception handling
+        System.out.println("=== EXCEPTION TEST ===");
+        try {
+            Rational invalid = new Rational(1, 0);
+        } catch (IllegalArgumentException e) {
+            System.out.println("Caught exception: " + e.getMessage());
+        }
+
+        try {
+            Rational zero = new Rational(0, 1);
+            Rational divisionByZero = r1.divide(zero);
+        } catch (ArithmeticException e) {
+            System.out.println("Caught division by zero: " + e.getMessage());
+        }
+    }
+}
@@ -0,0 +1,35 @@
+package movie.apis;
+
+public class Genre {
+    private Long id;
+    private String name;
+
+    public Genre(Long id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public Genre() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return id + ". " + name;
+    }
+}
@@ -0,0 +1,87 @@
+package movie.apis;
+
+import java.util.Scanner;
+
+public class Main {
+
+    private static final MovieService movieService = new MovieService();
+    private static final Scanner scanner = new Scanner(System.in);
+
+    public static void main(String[] args) {
+        System.out.println("\n=== MOVIE API CLIENT ===\n");
+
+        boolean running = true;
+        while (running) {
+            displayMenu();
+            int choice = getIntInput("Enter your choice: ");
+
+            switch (choice) {
+                case 1:
+                    movieService.displayGenres();
+                    break;
+
+                case 2:
+                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
+
+                    break;
+
+
+                case 3:
+                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
+
+
+                    break;
+
+                case 0:
+                    running = false;
+                    System.out.println("Goodbye!");
+
+                    break;
+
+                default:
+                    System.out.println("Invalid choice! Please enter 0-4");
+            }
+
+            if (running) {
+                System.out.println("\nPress Enter to continue...");
+                scanner.nextLine();
+                scanner.nextLine();
+            }
+        }
+
+        scanner.close();
+    }
+
+    private static void displayMenu() {
+        System.out.println("\n================================");
+        System.out.println("            MENU");
+        System.out.println("================================");
+        System.out.println("1. Get all genres");
+        System.out.println("2. Get movies by genre ID");
+        System.out.println("3. Get movie details by ID");
+        System.out.println("0. Exit");
+        System.out.println("================================");
+    }
+
+    private static int getIntInput(String prompt) {
+        System.out.print(prompt);
+        while (!scanner.hasNextInt()) {
+            System.out.print("Invalid input. " + prompt);
+            scanner.next();
+        }
+        int input = scanner.nextInt();
+        scanner.nextLine();
+        return input;
+    }
+
+    private static Long getLongInput(String prompt) {
+        System.out.print(prompt);
+        while (!scanner.hasNextLong()) {
+            System.out.print("Invalid input. " + prompt);
+            scanner.next();
+        }
+        Long input = scanner.nextLong();
+        scanner.nextLine();
+        return input;
+    }
+}
@@ -0,0 +1,24 @@
+package movie.apis;
+
+import java.util.List;
+
+/**
+ * Model class representing a movie
+ * Fields: id, title, genres, images
+ */
+public class Movie {
+
+    private Long id;
+    private String title;
+    private List<Genre> genres;
+    private String images;
+    private String year;
+    private String imdbRating;
+    private String country;
+
+    // TODO: Create a constructor with all fields
+
+    // TODO: Create a simple constructor with id and title only
+
+    // TODO: Create getters and setters for all fields
+}
@@ -0,0 +1,188 @@
+package movie.apis;
+
+import com.google.gson.*;
+import com.google.gson.reflect.TypeToken;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+
+public class MovieService {
+
+    private final static String GENRES_URL = "https://api.meshcomp.ir/api/v1/genres";
+    private final static String MOVIE_BY_ID_URL = "https://api.meshcomp.ir/api/v1/movies/";
+    private final static HttpClient client = HttpClient.newHttpClient();
+
+    private String getGenresList() {
+        try {
+            HttpRequest request = HttpRequest.newBuilder()
+                    .uri(URI.create(GENRES_URL))
+                    .build();
+
+            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+            if (response.statusCode() == 200) {
+                System.out.println("Genres List received successfully");
+                return response.body();
+            } else {
+                throw new IOException("HTTP error code: " + response.statusCode());
+            }
+        } catch (Exception e) {
+            System.out.println("!!Exception : " + e.getMessage());
+        }
+        return null;
+    }
+
+    private String getMoviesByGenreList(Long genreId, Long page) {
+        try {
+            String url = "https://api.meshcomp.ir/api/v1/genres/" + genreId + "/movies?page=" + page;
+
+            HttpRequest request = HttpRequest.newBuilder()
+                    .uri(URI.create(url))
+                    .build();
+
+            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+            if (response.statusCode() == 200) {
+                return response.body();
+            } else {
+                System.out.println("HTTP error code: " + response.statusCode());
+                return null;
+            }
+        } catch (Exception e) {
+            System.out.println("!!Exception : " + e.getMessage());
+        }
+        return null;
+    }
+
+
+
+    public void displayGenres() {
+        String jsonResponse = getGenresList();
+
+        if (jsonResponse == null) {
+            System.out.println("Failed to get genres");
+            return;
+        }
+
+        try {
+            JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+            JsonArray genresArray = rootObject.getAsJsonArray("genres");
+            Type genreListType = new TypeToken<ArrayList<Genre>>(){}.getType();
+            Gson gson = new Gson();
+            List<Genre> genres = gson.fromJson(genresArray, genreListType);
+
+            System.out.println("\nALL GENRES:");
+            for (Genre genre : genres) {
+                System.out.println(genre.getId() + ". " + genre.getName());
+            }
+            System.out.println();
+        } catch (Exception e) {
+            System.err.println("ERROR parsing genres: " + e.getMessage());
+        }
+    }
+
+    /**
+     * TODO 1: Display movies for a specific genre and page
+     *
+     * JSON format: { "movies": [ { "id": 1, "title": "Movie", "year": "1994" } ], "total": 177, "total_pages": 18 }
+     *
+     * Steps:
+     * - Call getMoviesByGenreList(genreId, page) to get JSON
+     * - Parse JSON to JsonObject
+     * - Get "movies" array (NOT "data")
+     * - Loop through array and print: "ID: {id} | {title} ({year})"
+     * - Also print total and total_pages
+     *
+     * PUT ALL PARSING CODE INSIDE try-catch
+     */
+    public void displayMoviesByGenre(Long genreId, Long page) {
+        // TODO: Write your code here
+        // All parsing code must be inside try-catch
+        try {
+            // Your code here
+
+        } catch (Exception e) {
+            System.err.println("ERROR: " + e.getMessage());
+        }
+    }
+
+
+    /**
+     * BONUS: Fetch movie details from API using movie ID
+     * URL format: https://api.meshcomp.ir/api/v1/movies/{movieId}
+     */
+    private String getMovieById(Long movieId) {
+        try {
+            // TODO: Complete this method
+            // String url = MOVIE_BY_ID_URL + movieId;
+            // HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
+            // HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            // if (response.statusCode() == 200) return response.body();
+
+            return null;
+        } catch (Exception e) {
+            System.out.println("!!Exception : " + e.getMessage());
+        }
+        return null;
+    }
+    
+    /**
+     * BONUS TODO: Display complete movie details for a given movie ID
+     *
+     * Expected JSON format from getMovieById():
+     * {
+     *   "id": 1,
+     *   "title": "The Shawshank Redemption",
+     *   "year": "1994",
+     *   "genres": ["Crime", "Drama"],
+     *   "poster": "https://moviesapi.ir/images/tt0111161_poster.jpg",
+     *   "country": "USA",
+     *   "imdb_rating": "9.3"
+     * }
+     *
+     * INSTRUCTIONS:
+     * 1. Call getMovieById(movieId) to get the JSON response
+     * 2. Check if response is null (if yes, print error and return)
+     * 3. Parse the JSON string to JsonObject (inside try-catch)
+     * 4. Extract all fields: id, title, year, genres array, poster, country, imdb_rating
+     * 5. Convert genres array to comma-separated string
+     * 6. Print all movie details in a readable format
+     *
+     * PUT ALL PARSING CODE INSIDE THE EXISTING try-catch
+     *
+     * @param movieId The ID of the movie to display
+     */
+    public void displayMovieDetails(Long movieId) {
+        // Step 1: Get JSON response from API
+        String jsonResponse = getMovieById(movieId);
+
+        // Step 2: Check if we got valid data
+        if (jsonResponse == null) {
+            System.out.println("Failed to get movie details for ID: " + movieId);
+            return;
+        }
+
+        // Step 3-6: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
+        try {
+            // TODO: Parse jsonResponse to JsonObject
+            // TODO: Extract id, title, year, genres array, poster, country, imdb_rating
+            // TODO: Convert genres array to a readable string
+            // TODO: Print all movie details
+            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
+            // HINT: Use getAsJsonArray("genres") to get genres
+            // HINT: For each genre, use getAsString()
+
+            // Your code here:
+
+
+        } catch (Exception e) {
+            System.err.println("ERROR parsing movie details: " + e.getMessage());
+        }
+    }
+}