diff --git a/src/main/java/Rational/Rational.java b/src/main/java/Rational/Rational.java index 7bd840e..ced5ac7 100644 --- a/src/main/java/Rational/Rational.java +++ b/src/main/java/Rational/Rational.java @@ -51,45 +51,46 @@ 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) รท (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 diff --git a/src/main/java/movie/apis/Main.java b/src/main/java/movie/apis/Main.java index f0e713d..0318742 100644 --- a/src/main/java/movie/apis/Main.java +++ b/src/main/java/movie/apis/Main.java @@ -21,17 +21,34 @@ 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: running = false; System.out.println("Goodbye!"); diff --git a/src/main/java/movie/apis/Movie.java b/src/main/java/movie/apis/Movie.java index c8cc4e2..c923850 100644 --- a/src/main/java/movie/apis/Movie.java +++ b/src/main/java/movie/apis/Movie.java @@ -2,10 +2,6 @@ package movie.apis; import java.util.List; -/** - * Model class representing a movie - * Fields: id, title, genres, images - */ public class Movie { private Long id; @@ -16,9 +12,103 @@ public class Movie { private String imdbRating; private String country; - // TODO: Create a constructor with all fields - // TODO: Create a simple constructor with id and title only + public Movie(Long id, String title, List genres, + String images, String year, + String imdbRating, String country) { - // TODO: Create getters and setters for all fields + this.id = id; + this.title = title; + this.genres = genres; + this.images = images; + this.year = year; + this.imdbRating = imdbRating; + this.country = country; + } + + + public Movie(Long id, String title) { + this.id = id; + this.title = title; + } + + + public Movie() { + } + + + 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 getGenres() { + return genres; + } + + + public void setGenres(List genres) { + this.genres = genres; + } + + + public String getImages() { + return images; + } + + + public void setImages(String images) { + this.images = images; + } + + + public String getYear() { + return year; + } + + + public void setYear(String year) { + this.year = year; + } + + + public String getImdbRating() { + return imdbRating; + } + + + public void setImdbRating(String imdbRating) { + this.imdbRating = imdbRating; + } + + + public String getCountry() { + return country; + } + + + public void setCountry(String country) { + this.country = country; + } + + + @Override + public String toString() { + return id + ". " + title + " (" + year + ")"; + } } \ No newline at end of file diff --git a/src/main/java/movie/apis/MovieService.java b/src/main/java/movie/apis/MovieService.java index cbbe70b..afc2d53 100644 --- a/src/main/java/movie/apis/MovieService.java +++ b/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>(){}.getType(); + Type genreListType = new TypeToken>() { + }.getType(); Gson gson = new Gson(); List genres = gson.fromJson(genresArray, genreListType); @@ -89,26 +89,86 @@ public class MovieService { /** * TODO 1: Display movies for a specific genre and page - * + *

* JSON format: { "movies": [ { "id": 1, "title": "Movie", "year": "1994" } ], "total": 177, "total_pages": 18 } - * + *

* 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 + + String jsonResponse = getMoviesByGenreList(genreId, page); + + if (jsonResponse == null) { + System.out.println("Failed to get movies"); + return; + } + + try { - // Your code here + + JsonObject rootObject = + JsonParser.parseString(jsonResponse) + .getAsJsonObject(); + + + JsonArray moviesArray = + rootObject.getAsJsonArray("movies"); + + + System.out.println("\nMOVIES:"); + + for (JsonElement element : moviesArray) { + + JsonObject movie = + element.getAsJsonObject(); + + + Long id = + movie.get("id").getAsLong(); + + + String title = + movie.get("title").getAsString(); + + + String year = + movie.has("year") + ? movie.get("year").getAsString() + : "Unknown"; + + + System.out.println( + "ID: " + id + + " | " + title + + " (" + year + ")" + ); + } + + + System.out.println( + "\nTotal movies: " + + rootObject.get("total").getAsInt() + ); + + + System.out.println( + "Total pages: " + + rootObject.get("total_pages").getAsInt() + ); + } catch (Exception e) { - System.err.println("ERROR: " + e.getMessage()); + + System.err.println( + "ERROR: " + e.getMessage() + ); } } @@ -118,34 +178,65 @@ public class MovieService { * 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 response = client.send(request, HttpResponse.BodyHandlers.ofString()); - // if (response.statusCode() == 200) return response.body(); - return null; + try { + + String url = MOVIE_BY_ID_URL + movieId; + + + HttpRequest request = + HttpRequest.newBuilder() + .uri(URI.create(url)) + .build(); + + + HttpResponse response = + client.send( + request, + HttpResponse.BodyHandlers.ofString() + ); + + + if (response.statusCode() == 200) { + + return response.body(); + + } else { + + System.out.println( + "HTTP error: " + + response.statusCode() + ); + + } + + } catch (Exception e) { - System.out.println("!!Exception : " + e.getMessage()); + + System.out.println( + "!!Exception : " + + e.getMessage() + ); } + + return null; } - + /** * BONUS TODO: Display complete movie details for a given movie ID - * + *

* Expected JSON format from getMovieById(): * { - * "id": 1, - * "title": "The Shawshank Redemption", - * "year": "1994", - * "genres": ["Crime", "Drama"], - * "poster": "https://moviesapi.ir/images/tt0111161_poster.jpg", - * "country": "USA", - * "imdb_rating": "9.3" + * "id": 1, + * "title": "The Shawshank Redemption", + * "year": "1994", + * "genres": ["Crime", "Drama"], + * "poster": "https://moviesapi.ir/images/tt0111161_poster.jpg", + * "country": "USA", + * "imdb_rating": "9.3" * } - * + *

* INSTRUCTIONS: * 1. Call getMovieById(movieId) to get the JSON response * 2. Check if response is null (if yes, print error and return) @@ -153,7 +244,7 @@ public class MovieService { * 4. Extract all fields: id, title, year, genres array, poster, country, imdb_rating * 5. Convert genres array to comma-separated string * 6. Print all movie details in a readable format - * + *

* PUT ALL PARSING CODE INSIDE THE EXISTING try-catch * * @param movieId The ID of the movie to display @@ -170,19 +261,70 @@ public class MovieService { // Step 3-6: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch) try { - // TODO: Parse jsonResponse to JsonObject - // TODO: Extract id, title, year, genres array, poster, country, imdb_rating - // TODO: Convert genres array to a readable string - // TODO: Print all movie details - // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject() - // HINT: Use getAsJsonArray("genres") to get genres - // HINT: For each genre, use getAsString() - // Your code here: + JsonObject movie = + JsonParser.parseString(jsonResponse) + .getAsJsonObject(); + Long id = + movie.get("id").getAsLong(); + + + String title = + movie.get("title").getAsString(); + + + String year = + movie.get("year").getAsString(); + + + String poster = + movie.get("poster").getAsString(); + + + String country = + movie.get("country").getAsString(); + + + String rating = + movie.get("imdb_rating").getAsString(); + + + JsonArray genres = + movie.getAsJsonArray("genres"); + + + StringBuilder genreText = + new StringBuilder(); + + + for (JsonElement g : genres) { + + if (genreText.length() > 0) + genreText.append(", "); + + genreText.append(g.getAsString()); + } + + + System.out.println("\n========== MOVIE DETAILS =========="); + + System.out.println("ID: " + id); + System.out.println("Title: " + title); + System.out.println("Year: " + year); + System.out.println("Genres: " + genreText); + System.out.println("Poster: " + poster); + System.out.println("Country: " + country); + System.out.println("IMDB Rating: " + rating); + + System.out.println("==================================="); } catch (Exception e) { - System.err.println("ERROR parsing movie details: " + e.getMessage()); + + System.err.println( + "ERROR parsing movie details: " + + e.getMessage() + ); } } -} \ No newline at end of file +}