package com.juick.service;

import com.juick.Attachment;
import com.juick.Message;
import com.juick.Photo;
import com.juick.server.util.ImageUtils;
import org.springframework.util.StringUtils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;

public class ImagesServiceImpl implements ImagesService {
    private ImageUtils imageUtils;
    private String imgDir;
    private String tmpDir;
    public ImagesServiceImpl(String imgDir, String tmpDir) {
        this.imgDir = imgDir;
        this.tmpDir = tmpDir;
        imageUtils = new ImageUtils(imgDir, tmpDir);
    }
    @Override
    public void setAttachmentMetadata(String baseUrl, Message msg) throws Exception {
        if (!StringUtils.isEmpty(msg.getAttachmentType())) {
            Photo photo = new Photo();
            if (msg.getRid()> 0) {
                photo.setSmall(String.format("%sphotos-512/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(), msg.getAttachmentType()));
                photo.setMedium(String.format("%sphotos-1024/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(), msg.getAttachmentType()));
                photo.setThumbnail(String.format("%sps/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(), msg.getAttachmentType()));
            } else {
                photo.setSmall(String.format("%sphotos-512/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
                photo.setMedium(String.format("%sphotos-1024/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
                photo.setThumbnail(String.format("%sps/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
            }
            msg.setPhoto(photo);
            String imageName = String.format("%s.%s", msg.getMid(), msg.getAttachmentType());
            if (msg.getRid() > 0) {
                imageName = String.format("%s-%s.%s", msg.getMid(), msg.getRid(), msg.getAttachmentType());
            }
            File fullImage = Paths.get(imgDir, "p", imageName).toFile();
            File mediumImage = Paths.get(imgDir, "photos-1024", imageName).toFile();
            File smallImage = Paths.get(imgDir, "photos-512", imageName).toFile();
            File thumbnailImage = Paths.get(imgDir, "ps", imageName).toFile();
            StringBuilder builder = new StringBuilder();
            builder.append(baseUrl);
            builder.append(msg.getAttachmentType().equals("mp4") ? "video" : "p");
            builder.append("/").append(msg.getMid());
            if (msg.getRid() > 0) {
                builder.append("-").append(msg.getRid());
            }
            builder.append(".").append(msg.getAttachmentType());
            String originalUrl =  builder.toString();

            Attachment original = imageUtils.getAttachment(fullImage);
            original.setUrl(originalUrl);

            Attachment medium = imageUtils.getAttachment(mediumImage);
            medium.setUrl(photo.getMedium());
            original.setMedium(medium);

            Attachment small = imageUtils.getAttachment(smallImage);
            small.setUrl(photo.getSmall());
            original.setSmall(small);

            Attachment thumb = imageUtils.getAttachment(thumbnailImage);
            thumb.setUrl(photo.getMedium());
            original.setThumbnail(thumb);

            msg.setAttachment(original);
        }
    }

    @Override
    public void saveImageWithPreviews(String tempFilename, String outputFilename) throws IOException {
        imageUtils.saveImageWithPreviews(tempFilename, outputFilename);
    }

    @Override
    public void saveAvatar(String tempFilename, int uid) throws IOException {
        imageUtils.saveAvatar(tempFilename, uid);
    }
}