Merge pull request 'Implement HW-03' (#1) from develop into main

Reviewed-on: Arshida_0/HW-03-oop-and-api-Arshida#1

README.md

@@ -121,40 +121,64 @@ Understanding: You must be able to explain your implementation
 ## Bonus Tasks ✒️
 1. Fetch and display movie information using movie ID
 
-Implement movie search by ID. User enters an ID, program displays complete movie details.
+In this section, you must implement the ability to search for a movie by its ID. The user enters an ID, and the program displays complete movie details.
 
-### ⚠️ First: Add Missing Fields to Movie Class
-The API returns more data than your current class supports. Add these fields:
-- `actors`, `awards`, `director`, `imdb_id`, `imdb_votes`, `metascore`, `plot`, `rated`, `released`, `runtime`, `type`, `writer`
+Movie Class Fields (already defined):
 
-### Implementation Steps:
+- id (Long) - Movie identifier
 
-1. **Complete `getMovieById(movieId)`**
-   - Build request to: `https://api.meshcomp.ir/api/v1/movies/{movieId}`
-   - If status 200 → return JSON body, else → return null
+- title (String) - Movie title
 
-2. **Complete `displayMovieDetails(movieId)`**
-   - Call `getMovieById()` → check for null
-   - Use Gson to parse JSON to Movie object (after adding fields above)
-   - Print formatted output (see example below)
+- year (String) - Release year
+
+- genres (List<Genre>) - List of genres
+
+- images (String) - Poster image URL
+
+- country (String) - Production country
+
+- imdbRating (String) - IMDB rating
+
+Implementation Steps:
+
+- Build and Send Request (getMovieById method):
+
+      - Create HTTP request to: https://api.meshcomp.ir/api/v1/movies/{movieId}
+
+      - Replace {movieId} with the ID from user
+
+      - Send request and get response
+
+- Handle Response (getMovieById method):
+
+      - If status code is 200, return JSON body
+
+      - Otherwise, print error and return null
+
+- Parse JSON and Create Movie Object (displayMovieDetails method):
+
+      - Parse JSON response to JsonObject
+
+      - Extract all fields: id, title, year, poster, country, imdb_rating
+
+      - Parse "genres" array and convert each to Genre object
+
+      - Create a Movie object with all extracted data
+
+- Display Results (displayMovieDetails method):
+
+      - Print all movie details in a clean format
+
+2. Advanced search (title, genre, year, rating, etc.)
+
+3. Sorting options for movies
+
+4. Save/load favorite movies to/from a file
+
+5. Improved console menu design
+
+6. GUI version using JavaFX
 
-### 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.
-           =======================================================================
-           
-```
 ---
 ## References 📚
 
@@ -177,4 +201,5 @@ Jackson Tutorial:
 
 ---
 ## Submission ⌛
-Deadline: May 1st (11 Ordibehesht)
+Deadline: May 1st (11 Ordibehesht)
+

src/main/java/Rational/Rational.java

@@ -54,42 +54,43 @@ 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("Divisor cannot be 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 +21,19 @@ public class Main {
                     break;
 
                 case 2:
-                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
-
+                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre() .
+                    System.out.println("Enter genre ID and page: ");
+                    Long genre_id = scanner.nextLong();
+                    Long page = scanner.nextLong();
+                    movieService.displayMoviesByGenre(genre_id, page);
                     break;
 
 
                 case 3:
-                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
-
-
+                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails() .
+                    System.out.println("Enter movie ID: ");
+                    Long movie_id = scanner.nextLong();
+                    movieService.displayMovieDetails(movie_id);
                     break;
 
                 case 0:

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

@@ -17,8 +17,66 @@ public class Movie {
     private String country;
 
     // 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 void setId(Long id) {
+        this.id = id;
+    }
+    public void setTitle(String title) {
+        this.title = title;
+    }
+    public void setGenres(List<String> genres) {
+        this.genres = genres;
+    }
+    public void setImages(List<String> images) {
+        this.images = images;
+    }
+    public void setYear(String year) {
+        this.year = year;
+    }
+    public void setImdb_rating(String imdb_rating) {
+        this.imdb_rating = imdb_rating;
+    }
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public Long getId() {
+        return id;
+    }
+    public String getTitle() {
+        return title;
+    }
+    public List<String> getGenres() {
+        return genres;
+    }
+    public List<String> getImages() {
+        return images;
+    }
+    public String getYear() {
+        return year;
+    }
+    public String getImdb_rating() {
+        return imdb_rating;
+    }
+    public String getCountry() {
+        return country;
+    }
 }

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

@@ -4,6 +4,7 @@ import com.google.gson.*;
 import com.google.gson.reflect.TypeToken;
 
 import java.io.IOException;
+import java.lang.reflect.Array;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
@@ -88,10 +89,9 @@ public class MovieService {
     }
 
     /**
-     * TODO 1: Display movies for a specific genre and page
+     * 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
+     * JSON format: { "movies": [ { "id": 1, "title": "Movie", "year": "1994" } ], "total": 177, "total_pages": 18 }
      *
      * Steps:
      * - Call getMoviesByGenreList(genreId, page) to get JSON
@@ -102,12 +102,58 @@ 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 List<Movie> listMaker(String str_obj) {
+        List<Movie> movies_lst = new ArrayList<Movie>();
+        try {
+            JsonObject json_obj = JsonParser.parseString(str_obj).getAsJsonObject();
+            JsonArray movies_data = json_obj.getAsJsonArray("movies");
+
+            for (int i = 0; i < movies_data.size(); i++){
+                JsonObject movie = movies_data.get(i).getAsJsonObject();
+                Long id = movie.get("id").getAsLong();
+                String title = movie.get("title").toString();
+                String year = movie.get("year").toString();
+
+                Movie Movie_movie = new Movie(id, title);
+                Movie_movie.setYear(year);
+
+                movies_lst.add(Movie_movie);
+            }
+            return movies_lst;
+
+        } catch (Exception e) {
+            System.err.println("ERROR: " + e.getMessage());
+        }
+        return null;
+    }
+
+    public void printMoviesList(List<Movie> lst) {
+        if (lst != null) {
+            for (int i = 0; i < lst.size(); i++) {
+                Movie a_movie = lst.get(i);
+                System.out.println("ID: " + a_movie.getId() + " | " +
+                        a_movie.getTitle() + " (" + a_movie.getYear() + ")");
+            }
+        }
+    }
+
+    public void displayMoviesByGenre(Long genreId, Long page) {
+        // TODO: Write your code here .
+        // All parsing code must be inside try-catch
+        String str_obj = getMoviesByGenreList(genreId, page);
+        if (str_obj == null) {
+            System.out.println("Failed to get movies by genre");
+            return;
+        }
+            List<Movie> movie_list = listMaker(str_obj);
+        printMoviesList(movie_list);
+
+        try {
+            JsonObject json_obj = JsonParser.parseString(str_obj).getAsJsonObject();
+            String total = json_obj.get("total").toString();
+            String total_pages = json_obj.get("total_pages").toString();
+            System.out.println("total: " + total + " total pages: " + total_pages);
         } catch (Exception e) {
             System.err.println("ERROR: " + e.getMessage());
         }
@@ -115,78 +161,96 @@ public class MovieService {
 
 
     /**
-     * BONUS: Fetch movie details from API using movie ID
+     * 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();
+            // 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;
         } 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)
+    
+    /**
+     * 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"
+     * }
+     *
+     * INSTRUCTIONS:
+     * 1. Call getMovieById(movieId) to get the JSON response
+     * 2. Check if response is null (if yes, print error and return)
+     * 3. Parse the JSON string to JsonObject (inside try-catch)
+     * 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
      */
-
-    /* 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;
         }
+        // Step 3-6: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
         try {
-            // TODO: Parse jsonResponse to JsonObject
+            // TODO: Parse jsonResponse to JsonObject .
+            JsonObject json_obj = JsonParser.parseString(jsonResponse).getAsJsonObject();
+
+            // TODO: Extract id, title, year, genres array, poster, country, imdb_rating .
+            String id = json_obj.get("id").toString();
+            String title = json_obj.get("title").toString();
+            String year = json_obj.get("year").toString();
+            String poster = json_obj.get("poster").toString();
+            String country = json_obj.get("country").toString();
+            String imdb_rating = json_obj.get("imdb_rating").toString();
+            JsonArray genres = json_obj.getAsJsonArray("genres");
+
+            // TODO: Convert genres array to a readable string .
+            String genres_str = "";
+            for (int i = 0; i < genres.size(); i++) {
+                String a_genre = genres.get(i).toString();
+                genres_str += a_genre;
+                if (i != genres.size() - 1) genres_str += ", ";
+            }
+
+            // TODO: Print all movie details .
+            String info = ("ID: " + id + "title: " + title +
+                    "year: " + year + "poster: " + poster +
+                    "ccountry: " + country + "imdb rating: " + imdb_rating +
+                    "genres: " + genres_str);
+            System.out.println(info);
+
             // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
-            // TODO: use Gson to parse the json
+            // HINT: Use getAsJsonArray("genres") to get genres
+            // HINT: For each genre, use getAsString()
+
             // Your code here:
+
         } catch (Exception e) {
             System.err.println("ERROR parsing movie details: " + e.getMessage());
         }
     }
+    //
 }