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@@ -25,11 +25,8 @@ public class Main {
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break;
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case 3:
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// TODO: Get page number from user, then call movieService.displayAllMovies()
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break;
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case 4:
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case 3:
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// TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
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@@ -61,8 +58,7 @@ public class Main {
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System.out.println("================================");
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System.out.println("1. Get all genres");
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System.out.println("2. Get movies by genre ID");
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System.out.println("3. Get all movies");
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System.out.println("4. Get movie details by ID");
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System.out.println("3. Get movie details by ID");
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System.out.println("0. Exit");
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System.out.println("================================");
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}
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@@ -11,19 +11,13 @@ import java.net.http.HttpResponse;
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import java.lang.reflect.Type;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.HashMap;
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import java.util.Map;
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public class MovieService {
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private final static String GENRES_URL = "https://api.meshcomp.ir/api/v1/genres";
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private final static String MOVIE_BY_ID_URL = "https://api.meshcomp.ir/api/v1/movies/";
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private final static HttpClient client = HttpClient.newHttpClient();
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private Map<Long, Movie> moviesCache = new HashMap<>();
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private boolean isMoviesLoaded = false;
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private int totalMovies = 0;
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private int totalPages = 0;
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private String getGenresList() {
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try {
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HttpRequest request = HttpRequest.newBuilder()
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@@ -67,6 +61,7 @@ public class MovieService {
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}
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public void displayGenres() {
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String jsonResponse = getGenresList();
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@@ -92,7 +87,6 @@ public class MovieService {
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}
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}
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/**
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* TODO 1: Display movies for a specific genre and page
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*
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@@ -120,85 +114,75 @@ public class MovieService {
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/**
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* TODO 2: Load all movies into cache (called automatically when needed)
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*
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* Steps:
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* - if (isMoviesLoaded) return; (already loaded)
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* - Clear moviesCache
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* - Get first page of genre 2 (Drama) to find total_pages
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* - Loop through all pages (1 to total_pages)
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* - For each page, get "movies" array
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* - Extract: id, title, year, poster, genres array
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* - For genres, loop and convert each string to Genre object
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* - Store in moviesCache using id as key
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* - Set isMoviesLoaded = true
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*
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* PUT ALL PARSING CODE INSIDE try-catch
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* BONUS: Fetch movie details from API using movie ID
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* URL format: https://api.meshcomp.ir/api/v1/movies/{movieId}
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*/
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private void loadAllMovies() {
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// TODO: Write your code here
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// All parsing code must be inside try-catch
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private String getMovieById(Long movieId) {
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try {
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// Your code here
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// TODO: Complete this method
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// String url = MOVIE_BY_ID_URL + movieId;
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// HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
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// HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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// if (response.statusCode() == 200) return response.body();
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return null;
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} catch (Exception e) {
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System.err.println("ERROR loading movies: " + e.getMessage());
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System.out.println("!!Exception : " + e.getMessage());
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}
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return null;
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}
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/**
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* TODO 3: Display all movies with pagination
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* BONUS TODO: Display complete movie details for a given movie ID
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*
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* Steps:
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* - Call loadAllMovies() first
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* - Calculate total pages: (totalMovies + 9) / 10
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* - Validate page number (1 to totalPages)
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* - Calculate start and end index
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* - Convert moviesCache.values() to List
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* - Loop from start to end and display: "ID: {id} | {title} ({year})"
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* Expected JSON format from getMovieById():
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* {
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* "id": 1,
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* "title": "The Shawshank Redemption",
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* "year": "1994",
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* "genres": ["Crime", "Drama"],
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* "poster": "https://moviesapi.ir/images/tt0111161_poster.jpg",
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* "country": "USA",
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* "imdb_rating": "9.3"
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* }
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*
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* loadAllMovies() already has try-catch inside
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*/
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public void displayAllMovies(int page) {
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// TODO: Write your code here
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// loadAllMovies() already has try-catch
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// Your display logic here
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}
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/**
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* TODO 4 (BONUS): Display movie details by ID
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* INSTRUCTIONS:
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* 1. Call getMovieById(movieId) to get the JSON response
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* 2. Check if response is null (if yes, print error and return)
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* 3. Parse the JSON string to JsonObject (inside try-catch)
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* 4. Extract all fields: id, title, year, genres array, poster, country, imdb_rating
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* 5. Convert genres array to comma-separated string
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* 6. Print all movie details in a readable format
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*
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* Steps:
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* - Call loadAllMovies() first
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* - Get movie from moviesCache using movieId
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* - If movie is null, print "Movie not found"
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* - Otherwise print: ID, Title, Year, Genres, Poster
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* PUT ALL PARSING CODE INSIDE THE EXISTING try-catch
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*
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* loadAllMovies() already has try-catch inside
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* @param movieId The ID of the movie to display
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*/
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public void displayMovieDetails(Long movieId) {
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// TODO: Write your code here (BONUS)
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// loadAllMovies() already has try-catch
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// Your display logic here
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// Step 1: Get JSON response from API
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String jsonResponse = getMovieById(movieId);
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// Step 2: Check if we got valid data
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if (jsonResponse == null) {
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System.out.println("Failed to get movie details for ID: " + movieId);
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return;
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}
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private String getGenresString(List<Genre> genres) {
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if (genres == null || genres.isEmpty()) {
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return "No genres";
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}
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < genres.size(); i++) {
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sb.append(genres.get(i).getName());
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if (i < genres.size() - 1) {
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sb.append(", ");
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}
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}
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return sb.toString();
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}
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// Step 3-6: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
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try {
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// TODO: Parse jsonResponse to JsonObject
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// TODO: Extract id, title, year, genres array, poster, country, imdb_rating
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// TODO: Convert genres array to a readable string
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// TODO: Print all movie details
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// HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
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// HINT: Use getAsJsonArray("genres") to get genres
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// HINT: For each genre, use getAsString()
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public int getTotalMovies() {
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return totalMovies;
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// Your code here:
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} catch (Exception e) {
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System.err.println("ERROR parsing movie details: " + e.getMessage());
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}
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}
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}
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