Merge pull request 'Implement movie explorer API features' (#1) from develop into main

Reviewed-on: kasra.tavafi/HW-03-oop-and-api#1

100/100

.idea/misc.xml

@@ -8,7 +8,7 @@
       </list>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="25" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="ms-25" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

src/main/java/Rational/Rational.java

@@ -54,42 +54,42 @@ public class Rational {
     // 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
+        int newNumerator = this.numerator * other.denominator - 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 null; // Remove this line when implemented
+        return r1.subtract(r2);
     }
 
     // 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
+        int newNumerator = this.numerator * other.numerator;
+        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 null; // Remove this line when implemented
+        return r1.multiply(r2);
     }
 
     // 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
+        if (other.numerator == 0)
+            throw new ArithmeticException("Cannot divide by zero");
+        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 null; // Remove this line when implemented
+        return r1.divide(r2);
     }
 
     //  PROVIDED - String representation

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

@@ -21,15 +21,15 @@ 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;
 
                 case 0:

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

@@ -15,10 +15,35 @@ public class Movie {
     private String year;
     private String imdb_rating;
     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
+    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;
+    }
+    public Movie(Long id, String title) {
+        this.id = id;
+        this.title = title;
+    }
+    public Long getId() {
+        return id;
+    }
+    public String getTitle() {
+        return title;
+    }
+    public List<String> getGenres() {
+        return genres;
+    }
+    public String getYear() {
+        return year;
+    }
+    public String getImdbRating() {
+        return imdb_rating;
+    }
+    public String toString() {
+        return id + ": " + title + " (" + year + ")";
+    }
 }

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

@@ -106,9 +106,26 @@ public class MovieService {
         // TODO: Write your code here
         // All parsing code must be inside try-catch
         try {
-            // Your code here
-
-        } catch (Exception e) {
+            String jsonResponse = getMoviesByGenreList(genreId, page);
+            if (jsonResponse == null || jsonResponse.isEmpty()) {
+                System.out.println("No response received.");
+                return;
+            }
+            JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+            JsonArray moviesArray = rootObject.getAsJsonArray("movies");
+            int total = rootObject.get("total").getAsInt();
+            int totalPages = rootObject.get("total_pages").getAsInt();
+            Type movieListType = new TypeToken<ArrayList<Movie>>() {}.getType();
+            Gson gson = new Gson();
+            List<Movie> movies = gson.fromJson(moviesArray, movieListType);
+            System.out.println("Movies:");
+            for (Movie movie : movies) {
+                System.out.println("ID: " + movie.getId() + " | " + movie.getTitle() + " (" + movie.getYear() + ")");
+            }
+            System.out.println("Total movies: " + total);
+            System.out.println("Total pages: " + totalPages);
+        }
+        catch (Exception e) {
             System.err.println("ERROR: " + e.getMessage());
         }
     }