package com.fdkankan.scene.util;

import com.drew.imaging.ImageMetadataReader;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifIFD0Directory;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ImageUtil {

    public static boolean isFakePortrait(File file) throws Exception {
        // 1. 读像素尺寸
        BufferedImage img = ImageIO.read(file);
        int width = img.getWidth();
        int height = img.getHeight();

        // 2. 读 EXIF
        Metadata metadata = ImageMetadataReader.readMetadata(file);
        ExifIFD0Directory exif = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);

        boolean hasOrientation = false;
        if (exif != null && exif.containsTag(ExifIFD0Directory.TAG_ORIENTATION)) {
            hasOrientation = true;
        }

        // 3. 判定伪竖图
        return width > height && !hasOrientation;
    }


    public static void main(String[] args) throws Exception {
        System.out.println(isFakePortrait(new File("D:\\test-vips\\1.jpg")));
    }
}