package Database;

import Config.SomeCodes;
import org.tinylog.Logger;

import java.nio.file.Path;
import java.time.LocalDateTime;

/**
 * PhotoCleaner class
 * Responsible for deleting photos older than a certain number of days
 */
public class PhotoCleaner {
    private final int days;
    private final boolean[] started;

    /**
     * PhotoCleaner constructor
     * @param days how many days old photos to delete
     */
    public PhotoCleaner(int days){
        this.days = days;
        this.started = new boolean[]{false};
    }

    /**
     * Start PhotoCleaner Thread
     */
    @SuppressWarnings("BusyWait")
    public void Start(){
        Thread thread = new Thread(() -> {
            started[0] = true;
            while (started[0]) {
                try {
                    System.out.println("Rechecking Database for older photos...");
                    // Delete photos older than the specified number of days
                    LocalDateTime now = LocalDateTime.now();

                    // delete from database
                    Thread sqldelete = new Thread(()->{
                        Sqlite sql = new Sqlite();
                        PhotoReviewClass[] prcs = sql.GetAll();
                        for (PhotoReviewClass prc : prcs) {
                            if (!started[0]) break;
                            if (prc != null && prc.getDateTime() != null) {
                                LocalDateTime ldt = SomeCodes.StringToLocalDateTime(prc.getDateTime());
                                if (ldt!=null){
                                    if (ldt.isBefore(now.minusDays(days))) {
                                        SomeCodes.Delete(prc.fullres());
                                        SomeCodes.Delete(prc.cropped());
                                        SomeCodes.Delete(prc.compressed());
                                        SomeCodes.Delete(prc.compressedcrop());
                                        SomeCodes.Delete(prc.thumbnails());
                                        sql.Delete(prc);
                                        Logger.info("Deleted PhotoReviewClass: " + prc.getDateTime() + " " + prc.getPrefix());
                                    }
                                }
                            }
                        }
                    });
                    RunThread(sqldelete, "DeleteFromDatabase");

                    // delete from disk
                    Thread deletefullres = new Thread(new DiskDeleter(SomeCodes.config.getFullQualityDirectory()));
                    RunThread(deletefullres, "DeleteFullRes");
                    Thread deletefullrescrop = new Thread(new DiskDeleter(SomeCodes.config.getFullQualityCropDirectory()));
                    RunThread(deletefullrescrop, "DeleteFullResCrop");
                    Thread deletecompressed = new Thread(new DiskDeleter(SomeCodes.config.getCompressedDirectory()));
                    RunThread(deletecompressed, "DeleteCompressed");
                    Thread deletecompressedcrop = new Thread(new DiskDeleter(SomeCodes.config.getCompressedCropDirectory()));
                    RunThread(deletecompressedcrop, "DeleteCompressedCrop");
                    Thread deletethumbnails = new Thread(new DiskDeleter(SomeCodes.config.getThumbsDirectory()));
                    RunThread(deletethumbnails, "DeleteThumbnails");


                    // Sleep for 1 hour
                    Thread.sleep(60 * 60 * 1000);
                } catch (Exception e) {
                    Logger.error("Error in PhotoCleaner Thread: " + e.getMessage());
                }
            }
            System.out.println("PhotoCleaner stopped");
        });
        thread.setName("PhotoCleaner Thread");
        thread.setDaemon(true);
        thread.start();
    }

    private void RunThread(Thread thread, String name){
        thread.setName(name);
        thread.setDaemon(true);
        thread.start();
    }

    class DiskDeleter implements Runnable{
        private final String path;
        private final LocalDateTime now ;
        public DiskDeleter(String path){
            this.path = path;
            this.now = LocalDateTime.now();
        }
        public void run(){
            Path[] ppp = SomeCodes.GetFilesInDirectory(path);
            if (ppp != null){
                for(Path p : ppp){
                    if (!started[0]) break;
                    LocalDateTime ldt = SomeCodes.GetCreationTime(p);
                    if (ldt != null) {
                        if (ldt.isBefore(now.minusDays(days))) {
                            SomeCodes.Delete(p);
                        }
                    }
                }
            }

        }
    }

    /**
     * Stop PhotoCleaner Thread
     */
    public void Stop(){
        started[0] = false;
    }
}