feat(07-books): Добавлено задание

labs/07-books/app/build.gradle.kts

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+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java application project to get you started.
+ * For more details on building Java & JVM projects, please refer to https://docs.gradle.org/8.10.2/userguide/building_java_projects.html in the Gradle documentation.
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    application
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    // This dependency is used by the application.
+    implementation(libs.guava)
+
+    implementation("jakarta.xml.bind:jakarta.xml.bind-api:4.0.2")
+    implementation("org.glassfish.jaxb:jaxb-runtime:4.0.2")
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(23)
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass = "ru.mrqiz.books.App"
+}
+
+tasks.named<Test>("test") {
+    // Use JUnit Platform for unit tests.
+    useJUnitPlatform()
+}
+
+tasks.named<JavaExec>("run") {
+   standardInput = System.`in`
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/App.java

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+package ru.mrqiz.books;
+
+public class App {
+    public static void main(String[] args) {
+        if (args.length < 1) {
+            System.out.println("hmm noo filename go touch grass");
+            return;
+        }
+        String filename = args[0];
+
+        BooksParser parser = new BooksParser();
+        Books books = parser.parse(filename);
+
+        if (books == null || books.getBookList().isEmpty()) {
+            System.out.println("hmm nothing in the books.. go read some");
+            return;
+        }
+
+        CLI cli = new CLI(books);
+        cli.start();
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/Book.java

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+package ru.mrqiz.books;
+
+import jakarta.xml.bind.annotation.XmlAttribute;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement(name = "book")
+public class Book {
+    private String author;
+    private String name;
+    private int year;
+    private int id;
+
+    public Book() {}
+
+    public Book(String author, String name, int year, int id) {
+        this.author = author;
+        this.name = name;
+        this.year = year;
+        this.id = id;
+    }
+
+    @XmlAttribute
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    @XmlElement
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    @XmlElement
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @XmlElement
+    public int getYear() {
+        return year;
+    }
+
+    public void setYear(int year) {
+        this.year = year;
+    }
+
+    @Override
+    public String toString() {
+        return "ID: " + id + ", Author: " + author + ", Name: " + name + ", Year: " + year;
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/Books.java

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+package ru.mrqiz.books;
+
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+import java.util.List;
+
+@XmlRootElement(name = "books")
+public class Books {
+    private List<Book> bookList;
+
+    @XmlElement(name = "book")
+    public List<Book> getBookList() {
+        return bookList;
+    }
+
+    public void setBookList(List<Book> bookList) {
+        this.bookList = bookList;
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/BooksParser.java

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+package ru.mrqiz.books;
+
+import jakarta.xml.bind.JAXBContext;
+import jakarta.xml.bind.JAXBException;
+import jakarta.xml.bind.Unmarshaller;
+
+import java.io.File;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class BooksParser {
+    private static final Logger logger = Logger.getLogger(BooksParser.class.getName());
+
+    public static Books parse(String filename) {
+        try {
+            File file = new File(filename);
+            JAXBContext jaxbContext = JAXBContext.newInstance(Books.class);
+
+            Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
+            return (Books) jaxbUnmarshaller.unmarshal(file);
+        } catch (JAXBException e) {
+            logger.log(Level.SEVERE, "JAXBException occurred while parsing the file: " + filename, e);
+        } catch (Exception e) {
+            logger.log(Level.SEVERE, "An error occurred while parsing the file: " + filename, e);
+        }
+        return null;
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/CLI.java

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+package ru.mrqiz.books;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Scanner;
+
+public class CLI {
+    private final Books books;
+    private final Scanner scanner;
+    private final Map<String, CLICommand> commands;
+
+    public CLI(Books books) {
+        this.books = books;
+        this.scanner = new Scanner(System.in);
+        this.commands = new HashMap<>();
+        initializeCommands();
+    }
+
+    private void initializeCommands() {
+        commands.put("display", new DisplayAllBooks());
+        commands.put("almost_fulltext_search", new SearchBooks(scanner));
+        commands.put("display_pairs", new DisplaySortedPairs(scanner));
+        commands.put("date_search", new SearchByDateRange(scanner));
+        commands.put("ggwp", null);
+    }
+
+    public void start() {
+        while (true) {
+            System.out.println("\npick one:");
+            commands.keySet().forEach(key -> System.out.println(key));
+
+            System.out.print("> ");
+            String choice = scanner.nextLine().trim().toLowerCase();
+
+            if (choice == "ggwp") {
+                System.out.println("kthxbye..");
+                return;
+            }
+
+            CLICommand command = commands.get(choice);
+            if (command != null) {
+                command.execute(books);
+            } else {
+                System.out.println("what the command..");
+            }
+        }
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/CLICommand.java

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+package ru.mrqiz.books;
+
+public interface CLICommand {
+    void execute(Books books);
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/DisplayAllBooks.java

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+package ru.mrqiz.books;
+
+import java.util.stream.Stream;
+
+public class DisplayAllBooks implements CLICommand {
+    @Override
+    public void execute(Books books) {
+        books.getBookList().stream().forEach(System.out::println);
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/DisplaySortedPairs.java

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+package ru.mrqiz.books;
+
+import java.util.List;
+import java.util.Scanner;
+import java.util.stream.Collectors;
+
+public class DisplaySortedPairs implements CLICommand {
+    private final Scanner scanner;
+
+    public DisplaySortedPairs(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+    @Override
+    public void execute(Books books) {
+        System.out.print("u wanna sort by author or name\n> ");
+        String choice = scanner.nextLine().trim().toLowerCase();
+
+        List<String> sortedPairs;
+        if (choice.equals("author")) {
+            sortedPairs = books.getBookList().stream()
+                    .sorted((b1, b2) -> b1.getAuthor().compareTo(b2.getAuthor()))
+                    .map(book -> book.getAuthor() + " + " + book.getName())
+                    .collect(Collectors.toList());
+        } else if (choice.equals("name")) {
+            sortedPairs = books.getBookList().stream()
+                    .sorted((b1, b2) -> b1.getName().compareTo(b2.getName()))
+                    .map(book -> book.getAuthor() + " + " + book.getName())
+                    .collect(Collectors.toList());
+        } else {
+            System.out.println("what the choice..");
+            return;
+        }
+
+        sortedPairs.forEach(System.out::println);
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/SearchBooks.java

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+package ru.mrqiz.books;
+
+import java.util.List;
+import java.util.Scanner;
+import java.util.stream.Collectors;
+
+public class SearchBooks implements CLICommand {
+    private final Scanner scanner;
+
+    public SearchBooks(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+    @Override
+    public void execute(Books books) {
+        System.out.println("gimme author name or year:");
+        String input = scanner.nextLine();
+        List<Book> foundBooks = books.getBookList().stream()
+                .filter(book -> book.getAuthor().equalsIgnoreCase(input) || String.valueOf(book.getYear()).equals(input))
+                .collect(Collectors.toList());
+
+        if (foundBooks.isEmpty()) {
+            System.out.println("no books found");
+        } else {
+            foundBooks.forEach(System.out::println);
+        }
+    }
+}
+

labs/07-books/app/src/main/java/ru/mrqiz/books/SearchByDateRange.java

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+package ru.mrqiz.books;
+
+import java.util.List;
+import java.util.Scanner;
+import java.util.stream.Collectors;
+
+public class SearchByDateRange implements CLICommand {
+    private final Scanner scanner;
+
+    public SearchByDateRange(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+    @Override
+    public void execute(Books books) {
+        System.out.println("gimme start year:");
+        int startYear = scanner.nextInt();
+        System.out.println("gimme end year:");
+        int endYear = scanner.nextInt();
+
+        List<Book> foundBooks = books.getBookList().stream()
+                .filter(book -> book.getYear() >= startYear && book.getYear() <= endYear)
+                .collect(Collectors.toList());
+
+        if (foundBooks.isEmpty()) {
+            System.out.println("no books found");
+        } else {
+            foundBooks.forEach(System.out::println);
+        }
+    }
+}
+