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

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

src/main/java/Rational/Rational.java

@@ -51,45 +51,42 @@ 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
+        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)
+        {
+            System.out.println("Numerator of the second number cannot be 0!");
+            return null;
+        }
+        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

@@ -21,14 +21,25 @@ public class Main {
                     break;
 
                 case 2:
-                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
-
+                    long id = getLongInput("Enter genre ID: ");
+                    long page = getLongInput("Enter page number: ");
+                    movieService.displayMoviesByGenre(id, page);
                     break;
 
 
                 case 3:
-                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
-
+                    System.out.println("Enter movie ID to see details: ");
+                    if (scanner.hasNextLong())
+                    {
+                        Long movieId = scanner.nextLong();
+                        System.out.println("---Fetching movie details---");
+                        movieService.displayMovieDetails(movieId);
+                    }
+                    else
+                    {
+                        System.out.println("Invalid ID.");
+                        scanner.next();
+                    }
 
                     break;
 
@@ -45,7 +56,7 @@ public class Main {
             if (running) {
                 System.out.println("\nPress Enter to continue...");
                 scanner.nextLine();
-                scanner.nextLine();
+                //scanner.nextLine();
             }
         }
 

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

@@ -16,9 +16,188 @@ 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 String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    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

@@ -11,6 +11,8 @@ import java.net.http.HttpResponse;
 import java.lang.reflect.Type;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
+import java.util.InputMismatchException;
 
 public class MovieService {
 
@@ -87,105 +89,257 @@ public class MovieService {
         }
     }
 
-    /**
-     * TODO 1: Display movies for a specific genre and page
-     *
-     * Open this link in your browser (and check Pretty-print checkbox) to view json format:
-     * https://api.meshcomp.ir/api/v1/genres/1/movies
-     *
-     * 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
+    public List<Movie> parseMoviesFromJson(String json)
+    {
+        if (json == null || json.isEmpty())
+        {
+            return new ArrayList<>();
+        }
+        Gson gson = new Gson();
+        Type listType = new TypeToken<ArrayList<Movie>>() {}.getType();
+        return gson.fromJson(json, listType);
+    }
 
-        } catch (Exception e) {
-            System.err.println("ERROR: " + e.getMessage());
+
+    public void displayListOfMovies()
+    {
+        Scanner scanner = new Scanner(System.in);
+        Long selectedGenreId = null;
+        System.out.println("---Select a genre---");
+        displayGenres();
+        System.out.println("Enter the genre ID to view movies or 0 to exit: ");
+        try
+        {
+            if (scanner.hasNextLong())
+            {
+                selectedGenreId = scanner.nextLong();
+            }
+            else
+            {
+                System.out.println("Invalid! Enter a number.");
+                return;
+            }
+        }
+        catch (InputMismatchException e)
+        {
+            System.out.println("Invalid input. Please enter a number.");
+            scanner.next();
+            return;
+        }
+
+        if (selectedGenreId == 0)
+        {
+            return;
+        }
+
+        System.out.println("----Movies for genre ID: " + selectedGenreId + "----");
+        Long page = 1L;
+        try
+        {
+            String json = getMoviesByGenreList(selectedGenreId, page);
+            if (json == null || json.isEmpty())
+            {
+                System.out.println("No movies found.");
+                return;
+            }
+            JsonObject rootObject = JsonParser.parseString(json).getAsJsonObject();
+            JsonArray moviesArray = rootObject.getAsJsonArray("movies");
+            if (moviesArray == null || moviesArray.isEmpty())
+            {
+                System.out.println("No movies found.");
+                return;
+            }
+            Gson gson = new Gson();
+            Type listType = new TypeToken<ArrayList<Movie>>() {}.getType();
+            List<Movie> movies = gson.fromJson(moviesArray, listType);
+
+            if (movies != null && !movies.isEmpty())
+            {
+                for (Movie movie : movies)
+                {
+                    System.out.println("ID: " + movie.getId() + " | " + movie.getTitle() + " (" + movie.getYear() + ")");
+                }
+            }
+            else
+            {
+                System.out.println("No movies found for this genre.");
+            }
+        }
+        catch (Exception e)
+        {
+            System.err.println("ERROR displaying movies: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    public void displayMoviesByGenre(Long genreId, Long page) {
+        try
+        {
+            String json = getMoviesByGenreList(genreId, page);
+            JsonObject rootObject = JsonParser.parseString(json).getAsJsonObject();
+            JsonArray moviesArray = rootObject.getAsJsonArray("movies");
+            if (moviesArray == null || moviesArray.isEmpty())
+            {
+                System.out.println("No movies found for this genre/page.");
+                return;
+            }
+            Gson gson = new Gson();
+            Type listType = new TypeToken<ArrayList<Movie>>() {}.getType();
+            List<Movie> movies = gson.fromJson(moviesArray, listType);
+            if (rootObject.has("total"))
+            {
+                int total = rootObject.get("total").getAsInt();
+                System.out.println("Total movies: " + total);
+            }
+            if (rootObject.has("total_pages"))
+            {
+                int totalPages = rootObject.get("total_pages").getAsInt();
+                System.out.println("Total pages: " + totalPages);
+            }
+
+            System.out.println("\n====================");
+            for (Movie movie: movies)
+            {
+                System.out.println("ID: " + movie.getId() + " | " + movie.getTitle() + " (" + movie.getYear() + ")");
+            }
+            System.out.println("--------------------\n");
+        }
+        catch (Exception e)
+        {
+            System.err.println("ERROR parsing movie list: " + e.getMessage());
+            e.printStackTrace();
         }
     }
 
 
-    /**
-     * 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;
+            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();
+            } else
+            {
+                System.out.println("HTTP error code for movie ID " + movieId + ": " + response.statusCode());
+                return null;
+            }
         } catch (Exception e) {
             System.out.println("!!Exception : " + e.getMessage());
         }
         return null;
     }
 
-     /*
-     BONUS TODO: Display complete movie details for a given movie ID
-
-     Open this link in your browser (and check Pretty-print checkbox) to view json format:
-     https://api.meshcomp.ir/api/v1/movies/1
-
-     INSTRUCTIONS:
-     1. Call getMovieById(movieId) to get the JSON response string
-     2. Check if response is null (if yes, print error and return)
-     3. Parse the JSON string to JsonObject (inside try-catch)
-     4. Use Gson to extract all fields from the JSON and map them to your Movie class:
-        - Add missing JSON fields to your Movie class first (actors, awards, director,
-          imdb_id, imdb_votes, metascore, plot, rated, released, runtime, type, writer)
-        - Then use Gson to parse your json string
-     5. Print all movie details in a readable format
-
-     (PUT ALL PARSING CODE INSIDE THE EXISTING try-catch)
-     */
-
-    /* EXAMPLE OUTPUT:
-
-           =======================================================================
-                               THE SHAWSHANK REDEMPTION (1994)
-           =======================================================================
-           Rating: 9.3/10  |  Votes: 1,738,596
-           Director: Frank Darabont
-           Cast: Tim Robbins, Morgan Freeman, Bob Gunton, William Sadler
-           Genre: Crime, Drama
-           Runtime: 142 min  |  Rated: R
-           Country: USA  |  Released: 14 Oct 1994
-           Plot: Two imprisoned men bond over a number of years, finding
-           solace and eventual redemption through acts of common decency.
-           Awards: Nominated for 7 Oscars. Another 19 wins & 30 nominations.
-           =======================================================================
-
-     */
 
     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
-            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
-            // TODO: use Gson to parse the json
-            // Your code here:
-        } catch (Exception e) {
+            JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+
+            Movie movie;
+            if (rootObject.has("movie"))
+            {
+                String movieJson = rootObject.get("movie").toString();
+                movie = new Gson().fromJson(movieJson, Movie.class);
+            } else
+            {
+                movie = new Gson().fromJson(jsonResponse, Movie.class);
+            }
+
+            if (movie == null)
+            {
+                System.err.println("Error: Movie object could not be parsed.");
+                return;
+            }
+
+            int width = 60;
+            String title = (movie.getTitle() != null ? movie.getTitle() : "Unknown Title");
+            String year = (movie.getYear() != null ? movie.getYear() : "");
+            String titleYear = title + (year.isEmpty() ? "" : " (" + year + ")");
+
+            if (titleYear.length() > width) {
+                width = titleYear.length() + 10;
+            }
+
+            int totalPadding = width - titleYear.length();
+            int leftPadding = totalPadding / 2;
+            int rightPadding = totalPadding - leftPadding;
+
+            String centeredTitle = " ".repeat(leftPadding) + titleYear.toUpperCase() + " ".repeat(rightPadding);
+
+            System.out.println("=============================================================");
+            System.out.println(centeredTitle);
+            System.out.println("=============================================================");
+            if (movie.getImdb_rating() != null && !movie.getImdb_rating().isEmpty())
+            {
+                try
+                {
+                    double rating = Double.parseDouble(movie.getImdb_rating());
+                    System.out.printf("Rating: %.1f/10", rating);
+
+                    if (movie.getImdb_votes() != null && !movie.getImdb_votes().isEmpty())
+                    {
+                        String votesStr = movie.getImdb_votes().replace(",", "");
+                        long votes = Long.parseLong(votesStr);
+                        System.out.printf("  |  Votes: %,d%n", votes);
+                    } else
+                    {
+                        System.out.println();
+                    }
+                } catch (NumberFormatException e)
+                {
+                    System.out.println("Rating: " + movie.getImdb_rating() + " (Format Error)");
+                }
+            } else
+            {
+                System.out.println("Rating: N/A");
+            }
+            if (movie.getDirector() != null)
+            {
+                System.out.println("Director: " + movie.getDirector());
+            }
+            if (movie.getActors() != null)
+            {
+                System.out.println("Cast: " + movie.getActors());
+            }
+            if (movie.getGenres() != null && !movie.getGenres().isEmpty())
+            {
+                String genresStr = String.join(" , ", movie.getGenres());
+                System.out.println("Genre: " + genresStr);
+            } else
+            {
+                System.out.println("Genre: N/A");
+            }
+            if (movie.getRuntime() != null)
+            {
+                System.out.println("Runtime: " + movie.getRuntime() + " | Rated: " + movie.getRated());
+            }
+            if (movie.getCountry() != null)
+            {
+                System.out.println("Country: " + movie.getCountry() + " | Released: " + movie.getReleased());
+            }
+            if (movie.getPlot() != null)
+            {
+                System.out.println("Plot: " + movie.getPlot());
+            }
+            if (movie.getAwards() != null)
+            {
+                System.out.println("Awards: " + movie.getAwards());
+            }
+
+
+
+            System.out.println("=======================================================================");
+
+        } catch (Exception e)
+        {
             System.err.println("ERROR parsing movie details: " + e.getMessage());
         }
     }