implementing HW-03-oop-and-api Ghazi

.idea/.name

@@ -0,0 +1 @@
+Main.java

src/main/java/Rational/Rational.java

@@ -51,45 +51,47 @@ public class Rational {
         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
+        int newNumerator = this.numerator * other.denominator
-        return null; // Remove this line when implemented
+                - other.numerator * this.denominator;
+        int newDenominator = this.denominator * other.denominator;
+        return new Rational(newNumerator, newDenominator);
     }
 
-    // TODO: Static method - r1 - r2
+
     public static Rational subtract(Rational r1, Rational r2) {
-        // YOUR CODE HERE
+        return r1.subtract(r2);
-        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
+        int newNumerator = this.numerator * other.numerator;
-        return null; // Remove this line when implemented
+        int newDenominator = this.denominator * other.denominator;
+        return new Rational(newNumerator, newDenominator);
     }
 
     // TODO: Static method - r1 * r2
     public static Rational multiply(Rational r1, Rational r2) {
-        // YOUR CODE HERE
+        return r1.multiply(r2);
-        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
+        if (other.numerator == 0) {
-        // HINT: Division is multiplication by reciprocal
+            throw new ArithmeticException("Cannot divide by zero");
-        // Don't forget to check if other.numerator is zero!
+        }
-        return null; // Remove this line when implemented
+
+        int newNumerator = this.numerator * other.denominator;
+        int newDenominator = this.denominator * other.numerator;
+        return new Rational(newNumerator, newDenominator);
     }
 
     // TODO: Static method - r1 / r2
     public static Rational divide(Rational r1, Rational r2) {
-        // YOUR CODE HERE
+        return r1.divide(r2);
-        return null; // Remove this line when implemented
     }
 
     //  PROVIDED - String representation

src/main/java/movie/apis/Main.java

@@ -21,13 +21,16 @@ public class Main {
                     break;
 
                 case 2:
-                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
+                    Long genreId = getLongInput("Enter genre ID: ");
+                    Long page = getLongInput("Enter page number: ");
+                    movieService.displayMoviesByGenre(genreId, page);
 
                     break;
 
 
                 case 3:
-                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
+                    Long movieId = getLongInput("Enter movie ID: ");
+                    movieService.displayMovieDetails(movieId);
 
 
                     break;

src/main/java/movie/apis/Movie.java

@@ -16,9 +16,44 @@ public class Movie {
     private String imdb_rating;
     private String country;
 
-    // TODO: Create a constructor with all fields
+    // Constructor (all fields)
+    public Movie(Long id, String title, List<String> genres, List<String> images,
+                 String year, String imdb_rating, String country) {
+        this.id = id;
+        this.title = title;
+        this.genres = genres;
+        this.images = images;
+        this.year = year;
+        this.imdb_rating = imdb_rating;
+        this.country = country;
+    }
 
-    // TODO: Create a simple constructor with id and title only
+    // Constructor (id + title only)
+    public Movie(Long id, String title) {
+        this.id = id;
+        this.title = title;
+    }
+    public Movie() {}
 
-    // TODO: Create getters and setters for all fields
+    // Getters & Setters
+    public Long getId() { return id; }
+    public void setId(Long id) { this.id = id; }
+
+    public String getTitle() { return title; }
+    public void setTitle(String title) { this.title = title; }
+
+    public List<String> getGenres() { return genres; }
+    public void setGenres(List<String> genres) { this.genres = genres; }
+
+    public List<String> getImages() { return images; }
+    public void setImages(List<String> images) { this.images = images; }
+
+    public String getYear() { return year; }
+    public void setYear(String year) { this.year = year; }
+
+    public String getImdb_rating() { return imdb_rating; }
+    public void setImdb_rating(String imdb_rating) { this.imdb_rating = imdb_rating; }
+
+    public String getCountry() { return country; }
+    public void setCountry(String country) { this.country = country; }
 }

src/main/java/movie/apis/MovieService.java

@@ -103,10 +103,33 @@ public class MovieService {
      * 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
+            String jsonResponse = getMoviesByGenreList(genreId, page);
+
+            if (jsonResponse == null) {
+                System.out.println("No data received!");
+                return;
+            }
+
+            JsonObject root = JsonParser.parseString(jsonResponse).getAsJsonObject();
+
+            JsonArray moviesArray = root.getAsJsonArray("movies");
+
+            int total = root.get("total").getAsInt();
+            int totalPages = root.get("total_pages").getAsInt();
+
+            System.out.println("\nTOTAL MOVIES: " + total);
+            System.out.println("TOTAL PAGES: " + totalPages + "\n");
+
+            for (JsonElement element : moviesArray) {
+                JsonObject obj = element.getAsJsonObject();
+
+                Long id = obj.get("id").getAsLong();
+                String title = obj.get("title").getAsString();
+                String year = obj.get("year").getAsString();
+
+                System.out.println("ID: " + id + " | " + title + " (" + year + ")");
+            }
 
         } catch (Exception e) {
             System.err.println("ERROR: " + e.getMessage());
@@ -120,16 +143,23 @@ public class MovieService {
      */
     private String getMovieById(Long movieId) {
         try {
-            // TODO: Complete this method
+            String url = MOVIE_BY_ID_URL + movieId;
-            // String url = MOVIE_BY_ID_URL + movieId;
+
-            // HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
+            HttpRequest request = HttpRequest.newBuilder()
-            // HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+                    .uri(URI.create(url))
-            // if (response.statusCode() == 200) return response.body();
+                    .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;
     }
 
@@ -171,22 +201,28 @@ public class MovieService {
      */
 
     public void displayMovieDetails(Long movieId) {
-        // Step 1: Get JSON response from API
         String jsonResponse = getMovieById(movieId);
 
-        // Step 2: Check if we got valid data
-        // Step 3-5: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
         if (jsonResponse == null) {
             System.out.println("Failed to get movie details for ID: " + movieId);
             return;
         }
+
         try {
-            // TODO: Parse jsonResponse to JsonObject
+            JsonObject obj = JsonParser.parseString(jsonResponse).getAsJsonObject();
-            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
+
-            // TODO: use Gson to parse the json
+            Gson gson = new Gson();
-            // Your code here:
+            Movie movie = gson.fromJson(obj, Movie.class);
+
+            System.out.println("\n=======================================================================");
+            System.out.println(movie.getTitle() + " (" + movie.getYear() + ")");
+            System.out.println("=======================================================================");
+            System.out.println("Rating: " + movie.getImdb_rating());
+            System.out.println("Country: " + movie.getCountry());
+            System.out.println("Genres: " + movie.getGenres());
+            System.out.println("=======================================================================\n");
+
         } catch (Exception e) {
             System.err.println("ERROR parsing movie details: " + e.getMessage());
         }
-    }
+    }}
-}