HW03

src/main/java/Rational/Rational.java

@@ -54,42 +54,48 @@ 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.denominator * 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
+        if (r2.numerator == 0){
+            throw new ArithmeticException("Cannot divide by zero");
+        }
+        return r1.divide(r2);
     }
 
     //  PROVIDED - String representation

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

@@ -22,14 +22,15 @@ public class Main {
 
                 case 2:
                     // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
-
+                    int genreId = getIntInput("Enter genre ID: ");
+                    int page = getIntInput("Enter page: ");
+                    movieService.displayMoviesByGenre((long) genreId, (long) 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 +15,145 @@ public class Movie {
     private String year;
     private String imdb_rating;
     private String country;
+    private String director;
+    private String actors;
+    private String runtime;
+    private String rated;
+    private String released;
+    private String plot;
+    private String awards;
+
+    public String getTitle() {
+        return title;
+    }
+
+    public List<String> getImages() {
+        return images;
+    }
+
+    public List<String> getGenres() {
+        return genres;
+    }
+
+    public void setGenres(List<String> genres) {
+        this.genres = genres;
+    }
+
+    public void setImages(List<String> images) {
+        this.images = images;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    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;
+    }
+
+    public String getDirector() {
+        return director;
+    }
+
+    public void setDirector(String director) {
+        this.director = director;
+    }
+
+    public String getActors() {
+        return actors;
+    }
+
+    public void setActors(String actors) {
+        this.actors = actors;
+    }
+
+    public String getRuntime() {
+        return runtime;
+    }
+
+    public void setRuntime(String runtime) {
+        this.runtime = runtime;
+    }
+
+    public String getRated() {
+        return rated;
+    }
+
+    public void setRated(String rated) {
+        this.rated = rated;
+    }
+
+    public String getReleased() {
+        return released;
+    }
+
+    public void setReleased(String released) {
+        this.released = released;
+    }
+
+    public String getPlot() {
+        return plot;
+    }
+
+    public void setPlot(String plot) {
+        this.plot = plot;
+    }
+
+    public String getAwards() {
+        return awards;
+    }
+
+    public void setAwards(String awards) {
+        this.awards = awards;
+    }
 
     // TODO: Create a constructor with 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
+public Movie(Long id,String title){
+        this.id=id;
+        this.title=title;
+}
+    // TODO: Create getters and setters for all fields
+    public Long getId(){
+        return id;
+    }
+    public void setId(Long id){
+        this.id=id;
+    }
 
-    // TODO: Create getters and setters for all fields
 }

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

@@ -61,7 +61,6 @@ public class MovieService {
     }
 
 
-
     public void displayGenres() {
         String jsonResponse = getGenresList();
 
@@ -73,7 +72,8 @@ public class MovieService {
         try {
             JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
             JsonArray genresArray = rootObject.getAsJsonArray("genres");
-            Type genreListType = new TypeToken<ArrayList<Genre>>(){}.getType();
+            Type genreListType = new TypeToken<ArrayList<Genre>>() {
+            }.getType();
             Gson gson = new Gson();
             List<Genre> genres = gson.fromJson(genresArray, genreListType);
 
@@ -89,24 +89,43 @@ public class MovieService {
 
     /**
      * TODO 1: Display movies for a specific genre and page
-     *
+     * <p>
      * Open this link in your browser (and check Pretty-print checkbox) to view json format:
      * https://api.meshcomp.ir/api/v1/genres/1/movies
-     *
+     * <p>
      * 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
-     *
+     * <p>
      * 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("Failed to get movies");
+                return;
+            }
+            JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+            JsonArray moviesArray = rootObject.getAsJsonArray("movies");
+            System.out.println("\nMOVIES LIST:");
+            for (JsonElement element : moviesArray) {
+                JsonObject movie = element.getAsJsonObject();
+
+                Long id = movie.get("id").getAsLong();
+                String title = movie.get("title").getAsString();
+                String year = movie.get("year").getAsString();
+
+                System.out.println("ID: " + id + " | " + title + " (" + year + ")");
+            }
+
+            System.out.println("\nTOTAL: " + rootObject.get("total").getAsInt());
+            System.out.println("TOTAL PAGES: " + rootObject.get("total_pages").getAsInt());
 
         } catch (Exception e) {
             System.err.println("ERROR: " + e.getMessage());
@@ -126,7 +145,17 @@ public class MovieService {
             // HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
             // if (response.statusCode() == 200) return response.body();
 
-            return null;
+            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();
+            }
         } catch (Exception e) {
             System.out.println("!!Exception : " + e.getMessage());
         }
@@ -181,10 +210,22 @@ public class MovieService {
             return;
         }
         try {
-            // TODO: Parse jsonResponse to JsonObject
-            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
-            // TODO: use Gson to parse the json
-            // Your code here:
+            JsonObject jsonObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+            Gson gson = new Gson();
+            Movie movie = gson.fromJson(jsonObject, Movie.class);
+            System.out.println("=======================================================================");
+            System.out.println("                " + movie.getTitle() + " (" + movie.getYear() + ")");
+            System.out.println("=======================================================================");
+            System.out.println("Rating: " + movie.getImdb_rating());
+            System.out.println("Director: " + movie.getDirector());
+            System.out.println("Cast: " + movie.getActors());
+            System.out.println("Genre: " + movie.getGenres());
+            System.out.println("Runtime: " + movie.getRuntime() + " | Rated: " + movie.getRated());
+            System.out.println("Country: " + movie.getCountry() + " | Released: " + movie.getReleased());
+            System.out.println("Plot: " + movie.getPlot());
+            System.out.println("Awards: " + movie.getAwards());
+            System.out.println("=======================================================================");
+
         } catch (Exception e) {
             System.err.println("ERROR parsing movie details: " + e.getMessage());
         }