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Refactor: handle some exception & change structure

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This commit is contained in:
Dong Hyun Kim
2025-06-10 15:34:33 +09:00
parent cbeb66766b
commit 815a9eb863
3 changed files with 56 additions and 85 deletions
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117
src/main/java/dev/ptnr/Hitomi.java
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@@ -2,134 +2,111 @@ package dev.ptnr;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.regex.*;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
public class Hitomi {
private static String cdnUrl = ".gold-usergeneratedcontent.net";
private static String baseCDNUrl = "https://ltn" + cdnUrl;
private static Map<String, Boolean> getGalleryData(Integer galleryId) throws Exception {
Map<String, Boolean> galleryData = new LinkedHashMap<>();
private static final String cdnUrl = ".gold-usergeneratedcontent.net";
private static final String baseCDNUrl = "https://ltn" + cdnUrl;
private static ArrayList<String> getGalleryData(Integer galleryId) {
String baseUrl = baseCDNUrl + "/galleries/" + galleryId + ".js";
String rawData = new String(AyayaUtils.GetFileFromUrl(baseUrl));
if (rawData.length() == 3) {
throw new Exception("Failed to Get JS (code " + rawData + ")");
byte[] rawData = AyayaUtils.GetFileFromUrl(baseUrl);
if (rawData == null) {
System.out.println("[ERR > Hitomi.GetGalleryData()] Failed to Get " + galleryId + ".js");
return null;
}
String rawJson = new String(rawData).replace("var galleryinfo = ", "");
rawData = rawData.replace("var galleryinfo = ", "");
ObjectMapper objectMapper = new ObjectMapper();
ArrayList<String> galleryData = new ArrayList<>();
try {
JsonNode rootNode = objectMapper.readTree(rawData);
ObjectMapper objectMapper = new ObjectMapper();
JsonNode rootNode = objectMapper.readTree(rawJson);
JsonNode files = rootNode.get("files");
for (JsonNode node : files) {
String fileHash = node.get("hash").asText();
Boolean hasAvif = node.get("hasavif").asBoolean();
// Boolean hasAvif = node.get("hasavif").asBoolean();
galleryData.put(fileHash, hasAvif);
galleryData.add(fileHash);
}
} catch (JsonProcessingException e) {
System.out.println("[ERR] In Hitomi.getGalleryData() > " + e.getMessage());
throw e;
} catch (Exception e) {
System.out.println("[ERR > Hitomi.GetGalleryData()] Failed to Parse JSON\n" + e.getMessage());
return null;
}
return galleryData;
}
private static String getIdFromGG(String regex, String data) {
private static Integer getIdFromGG(String regex, String data) {
Matcher matcher = Pattern.compile(regex).matcher(data);
String regexData = "";
int regexData;
matcher.find();
regexData = matcher.group(1);
regexData = Integer.parseInt(matcher.group(1));
return regexData;
}
private static Map<String, Integer> getOffsetsFromGG(String regex, String data, Integer key) {
private static Map<Integer, Integer> getOffsetsFromGG(String regex, String data, Integer key) {
Matcher matcher = Pattern.compile(regex).matcher(data);
Map<String, Integer> offsets = new HashMap<>();
Map<Integer, Integer> offsets = new HashMap<>();
while (matcher.find()) {
offsets.put(matcher.group(1), key);
offsets.put(Integer.parseInt(matcher.group(1)), key);
}
return offsets;
}
private static String getGGJS() {
String baseUrl = baseCDNUrl + "/gg.js";
try {
return new String(AyayaUtils.GetFileFromUrl(baseUrl));
} catch (Exception e) {
System.out.println("[ERR] In Hitomi.GetGGJS() > " + e.getMessage());
return "";
byte[] rawJs = AyayaUtils.GetFileFromUrl(baseUrl);
if (rawJs == null) {
System.out.println("[ERR > Hitomi.GetGGJS()] Failed to Get gg.js");
return null;
}
return new String(rawJs);
}
private static String getImageUrl(String rawGG, String hash, Boolean hasAvif) {
String DefaultSubdomainKey = getIdFromGG("var o = (\\d)", rawGG);
String SubdomainKey = getIdFromGG("o = (\\d); break;", rawGG);
String CommonImagePath = getIdFromGG("b: '(.+)'", rawGG);
private static String getImageUrl(String rawGG, String hash) {
int defaultDomainKey = getIdFromGG("var o = (\\d)", rawGG) + 1;
int offsetDomainKey = getIdFromGG("o = (\\d); break;", rawGG) + 1;
int commonKey = getIdFromGG("b: '(\\d+)\\/'", rawGG);
Map<String, Integer> Offsets = getOffsetsFromGG("case (\\d+):", rawGG, Integer.parseInt(SubdomainKey));
String ImageUrl = "";
Integer SubdomainOffset = Integer.parseInt(DefaultSubdomainKey) + 1;
Map<Integer, Integer> Offsets = getOffsetsFromGG("case (\\d+):", rawGG, offsetDomainKey);
int domainOffset = defaultDomainKey;
// ex) hash == 415e8c1bfbac7cb6192b6f7c14768c196dde9029233126ca5f108d6aa99818de
// 8de to slice hash[-1:] / hash[-3:-1] (e / 8d)
// -> s == hash[-1:] + hash[-3:-1] == "e8d"
String SubKey = hash.substring(hash.length() - 1, hash.length()) + hash.substring(hash.length() - 3, hash.length() - 1);
// s to parseInt(s, 16) == 3725 == ImageId
Integer ImageId = Integer.parseInt(SubKey, 16);
int imageId = Integer.parseInt(hash.substring(hash.length() - 1) + hash.substring(hash.length() - 3, hash.length() - 1), 16);
if (Offsets.containsKey(imageId)) domainOffset = offsetDomainKey;
if (Offsets.containsKey(ImageId.toString())) SubdomainOffset = Integer.parseInt(SubdomainKey) + 1;
// a{key}.gold-usergeneratedcontent.net/1749488401/3725/415e8c1bfbac7cb6192b6f7c14768c196dde9029233126ca5f108d6aa99818de.avif
// domain number (a1, a2 / w1, w2..)
// webp = w1, w2 / avif = a1, a2
// in gg.js case -> o(SubdomainKey) + 1 == 1, out of ggjs case -> o(DefaultSubdomainKey) + 1 == 2
// hasavif flag 1 -> a1, a2 / flag 0 -> w1, w2
// if (hasAvif) ImageUrl = "https://a" + SubdomainOffset + cdnUrl + "/" + CommonImagePath + ImageId + "/" + hash + ".avif";
// else ImageUrl = "https://w" + SubdomainOffset + cdnUrl + "/" + CommonImagePath + ImageId + "/" + hash + ".webp";
ImageUrl = "https://w" + SubdomainOffset + cdnUrl + "/" + CommonImagePath + ImageId + "/" + hash + ".webp";
// System.out.println("ImageUrl: " + ImageUrl);
return ImageUrl;
return "https://w" + domainOffset + cdnUrl + "/" + commonKey + "/" + imageId + "/" + hash + ".webp";
}
public static String GetHitomiData(Integer galleryId) {
Map<String, Boolean> galleryData = new LinkedHashMap<>();
ArrayList<String> images = new ArrayList<>();
try {
galleryData = getGalleryData(galleryId);
} catch (Exception e) {
System.err.println("In Hitomi.main() > " + e.getMessage());
return "";
ArrayList<String> galleryData = getGalleryData(galleryId);
if (galleryData == null) {
System.err.println("[ERR > Hitomi.GetHitomiData()] Failed to Get Gallery Data");
return null;
}
String GGJS = getGGJS();
if (GGJS == null) {
System.err.println("[ERR > Hitomi.GetHitomiData()] Failed to Get gg.js");
return null;
}
galleryData.forEach((hash, hasAvif) -> {
images.add(getImageUrl(GGJS, hash, hasAvif));
});
ArrayList<String> images = new ArrayList<>();
galleryData.forEach((hash) -> images.add(getImageUrl(GGJS, hash)));
return images.get(0);
}
public static void main(String[] args) {
// GetHitomiData(3390541);
}
}