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

Reviewed-on: amirmt/HW-03-oop-and-api#1

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
-        return null; // Remove this line when implemented
+    public Rational subtract(Rational other)
+    {
+        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
+    public static Rational subtract(Rational r1, Rational r2)
+    {
+        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
+    public Rational multiply(Rational other)
+    {
+        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
+    public static Rational multiply(Rational r1, Rational r2)
+    {
+        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
+    public Rational divide(Rational other)
+    {
+        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
+    public static Rational divide(Rational r1, Rational r2)
+    {
+        return r1.divide(r2);
     }
 
     //  PROVIDED - String representation

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

@@ -15,27 +15,26 @@ public class Main {
             displayMenu();
             int choice = getIntInput("Enter your choice: ");
 
-            switch (choice) {
+            switch (choice)
+            {
                 case 1:
                     movieService.displayGenres();
                     break;
 
                 case 2:
-                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
-
+                    Long genreId = getLongInput("Enter genre ID: ");
+                    int page = getIntInput("Enter page number: ");
+                    movieService.displayMoviesByGenre(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:
                     running = false;
                     System.out.println("Goodbye!");
-
                     break;
 
                 default:
@@ -45,7 +44,6 @@ public class Main {
             if (running) {
                 System.out.println("\nPress Enter to continue...");
                 scanner.nextLine();
-                scanner.nextLine();
             }
         }
 

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

@@ -16,9 +16,236 @@ public class Movie {
     private String imdb_rating;
     private String country;
 
-    // TODO: Create a constructor with all fields
+    private String actors;
+    private String awards;
+    private String director;
+    private String imdb_id;
+    private String imdb_votes;
+    private String metascore;
+    private String plot;
+    private String rated;
+    private String released;
+    private String runtime;
+    private String type;
+    private String writer;
 
-    // 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 Movie() {}
+
+
+    public Movie(Long id,
+                 String title,
+                 List<String> genres,
+                 List<String> images,
+                 String year,
+                 String imdb_rating,
+                 String country,
+                 String actors,
+                 String awards,
+                 String director,
+                 String imdb_id,
+                 String imdb_votes,
+                 String metascore,
+                 String plot,
+                 String rated,
+                 String released,
+                 String runtime,
+                 String type,
+                 String writer)
+    {
+        this.id = id;
+        this.title = title;
+        this.genres = genres;
+        this.images = images;
+        this.year = year;
+        this.imdb_rating = imdb_rating;
+        this.country = country;
+        this.actors = actors;
+        this.awards = awards;
+        this.director = director;
+        this.imdb_id = imdb_id;
+        this.imdb_votes = imdb_votes;
+        this.metascore = metascore;
+        this.plot = plot;
+        this.rated = rated;
+        this.released = released;
+        this.runtime = runtime;
+        this.type = type;
+        this.writer = writer;
+    }
+
+    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;
+    }
+
+    public String getActors() {
+        return actors;
+    }
+
+    public void setActors(String actors) {
+        this.actors = actors;
+    }
+
+    public String getAwards() {
+        return awards;
+    }
+
+    public void setAwards(String awards) {
+        this.awards = awards;
+    }
+
+    public String getDirector() {
+        return director;
+    }
+
+    public void setDirector(String director) {
+        this.director = director;
+    }
+
+    public String getImdb_id() {
+        return imdb_id;
+    }
+
+    public void setImdb_id(String imdb_id) {
+        this.imdb_id = imdb_id;
+    }
+
+    public String getImdb_votes() {
+        return imdb_votes;
+    }
+
+    public void setImdb_votes(String imdb_votes) {
+        this.imdb_votes = imdb_votes;
+    }
+
+    public String getMetascore() {
+        return metascore;
+    }
+
+    public void setMetascore(String metascore) {
+        this.metascore = metascore;
+    }
+
+    public String getPlot() {
+        return plot;
+    }
+
+    public void setPlot(String plot) {
+        this.plot = plot;
+    }
+
+    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 getRuntime() {
+        return runtime;
+    }
+
+    public void setRuntime(String runtime) {
+        this.runtime = runtime;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getWriter() {
+        return writer;
+    }
+
+    public void setWriter(String writer) {
+        this.writer = writer;
+    }
 }

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

@@ -102,13 +102,41 @@ 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
+    public void displayMoviesByGenre(Long genreId, Long page)
+    {
+        try
+        {
+            String jsonResponse = getMoviesByGenreList(genreId, page);
 
-        } catch (Exception e) {
+            if (jsonResponse == null)
+            {
+                System.out.println("Failed to get movies for genre ID: " + genreId);
+                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();
+
+            System.out.println("\nMovies for Genre ID " + genreId + " (Page " + page + "):");
+
+            for (JsonElement element : moviesArray)
+            {
+                JsonObject movieObj = element.getAsJsonObject();
+                long id = movieObj.get("id").getAsLong();
+                String title = movieObj.get("title").getAsString();
+                String year = movieObj.get("year").getAsString();
+
+                System.out.printf("ID: %d | Title: %s (%s)", id, title, year);
+                System.out.println();
+            }
+            System.out.println("Total movies: " + total);
+            System.out.println("Total pages: " + totalPages);
+        }
+        catch (Exception e)
+        {
             System.err.println("ERROR: " + e.getMessage());
         }
     }
@@ -118,19 +146,27 @@ public class MovieService {
      * 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();
+    private String getMovieById(Long movieId)
+    {
+        try
+        {
+            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();
+
+            System.out.println("HTTP error code: " + response.statusCode());
+            return null;
+        }
+        catch (Exception e)
+        {
+            System.out.println("!!Exception : " + e.getMessage());
             return null;
-        } catch (Exception e) {
-            System.out.println("!!Exception : " + e.getMessage());
         }
-        return null;
     }
 
      /*
@@ -170,22 +206,38 @@ public class MovieService {
 
      */
 
-    public void displayMovieDetails(Long movieId) {
-        // Step 1: Get JSON response from API
+    public void displayMovieDetails(Long movieId)
+    {
         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) {
+        if (jsonResponse == null)
+        {
             System.out.println("Failed to get movie details for ID: " + movieId);
             return;
         }
-        try {
-            // TODO: Parse jsonResponse to JsonObject
-            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
-            // TODO: use Gson to parse the json
-            // Your code here:
-        } catch (Exception e) {
+        try
+        {
+            JsonObject movieObj = JsonParser.parseString(jsonResponse).getAsJsonObject();
+
+            Gson gson = new Gson();
+            Movie movie = gson.fromJson(movieObj, Movie.class);
+
+            System.out.println("=======================================================================");
+            System.out.println(movie.getTitle() + " (" + movie.getYear() + ")");
+            System.out.println("=======================================================================");
+            System.out.println("Rating: " + movie.getImdb_rating() + "/10  |  Votes: " + movie.getImdb_votes());
+            System.out.println("Director: " + movie.getDirector());
+            System.out.println("Cast: " + movie.getActors());
+            System.out.println("Genre: " + String.join(", ", 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());
         }
     }