JavaLessons/16_Logic.java at master · LoveMyDaughter/JavaLessons · GitHub

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package lesson16;

/* ýòîò êëàññ ðåàëèçóåò ìåòîäû ïîèñêà, äîáàâëåíèÿ è ïîêàçà äèñêîâ
 * Ïîèñê ïî íàçâàíèþ
 * Ïîèñê ïî æàíðó
 * Ïîèñê ïî ðåæèññåðó
 * Ñàìûé ïîïóëÿðíûé ôèëüì â æàíðå
 * Ïîêàç âñåõ çàïèñåé è äîáàâëåíèå
*/

import java.util.ArrayList;

public class Logic {

	// â êîëëåêöèè õðàíèì âñå äàííûå î äèñêàõ
	ArrayList <VideoStore> disks = new ArrayList<>();


	// ïîêàç âñåõ äèñêîâ
	public void showAll () {
		System.out.println("Âñå äèñêè:");
		for (VideoStore disk : disks) {
			System.out.println(disk);
		}
	}

	// äîáàâëåíèå äèñêà
	public void addDisk (String tittle, String producer, String genre, int rating, double price) {
		disks.add(new VideoStore(tittle, producer, genre, rating, price));
	}

	// ïîêàç ïî íàçâàíèþ
	public void showByTitle (String title) {
		boolean exist = false;
		for (VideoStore disk : disks) {
			if (disk.getTittle() == title) {
				System.out.println(disk);
				exist = true;
			}
		}
		if (! exist) System.out.println("\"" + title + "\"" + " - Íåò òàêîãî ôèëüìà.");
	}

	// ïîêàç ïî æàíðó
	public void showByGenre (String genre) {
		boolean exist = false;
		for (VideoStore disk : disks) {
			if (disk.getGenre() == genre) {
				System.out.println(disk);
				exist = true;
			}
		}
		if (! exist) System.out.println("\"" + genre + "\"" + " - Íåò òàêîãî æàíðà.");
	}


	// ïîêàç ïî ðåæèñåðó
	public void showByProducer (String producer) {
		boolean exist = false;
		for (VideoStore disk : disks) {
			if (disk.getProducer() == producer) {
				System.out.println(disk);
				exist = true;
			}
		}
		if (!exist) System.out.println("\"" + producer + "\"" + " - Íåò òàêîãî ðåæèñåðà.");
	}

	// Ñàìûé ïîïóëÿðíûé ôèëüì â æàíðå
	public void showMaxRatingInGenre (String genre) {
		boolean existGenre = false;
		VideoStore maxRaitingDisk = null;
		for (VideoStore disk : disks) {
			if (disk.getGenre() == genre) {
				existGenre = true;
				maxRaitingDisk = disk;
				break;
			}
		}
		if (existGenre) {
			for (VideoStore disk : disks) {
				if (disk.getGenre() == genre) {
					if (disk.getRating() > maxRaitingDisk.getRating()) {
						maxRaitingDisk = disk;
					}
				}
			}
		}
		if (! existGenre) {
			System.out.println("\"" + genre + "\"" + " - Íåò òàêîãî æàíðà.");
		} else System.out.println(maxRaitingDisk);
	}

}