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hentai.dart
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// This source code is a part of Project Violet.
// Copyright (C) 2020-2024. violet-team. Licensed under the Apache-2.0 License.
import 'package:html/parser.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:violet/component/eh/eh_headers.dart';
import 'package:violet/component/eh/eh_parser.dart';
import 'package:violet/component/eh/eh_provider.dart';
import 'package:violet/component/hisoki/hisoki_getter.dart';
import 'package:violet/component/hisoki/hisoki_provider.dart';
import 'package:violet/component/hitomi/hitomi.dart';
import 'package:violet/component/hitomi/hitomi_parser.dart';
import 'package:violet/component/hitomi/hitomi_provider.dart';
import 'package:violet/component/image_provider.dart';
import 'package:violet/database/database.dart';
import 'package:violet/database/query.dart';
import 'package:violet/log/log.dart';
import 'package:violet/network/wrapper.dart' as http;
import 'package:violet/script/script_manager.dart';
import 'package:violet/settings/settings.dart';
class SearchResult {
final List<QueryResult> results;
final int offset;
const SearchResult({required this.results, required this.offset});
}
//
// Hentai Component
// Search and Image Download Method
//
// 1. Search
// - From Database
// - From Web
// require info: title, id, pages
// option: thumbnail, url
// this function is implemented on `search` method
//
// 2. Image donwload
// require info: Images
// option: Header (Most sites only need 0 or 1 header for all images)
// this funciton is implemented on `getImageListFromEHId` method
//
class HentaiManager {
// <Query Results, next offset>
// if next offset == 0, then search start
// if next offset == -1, then search end
static Future<SearchResult> search(String what, [int offset = 0]) async {
int? no = int.tryParse(what);
// is Id Search?
if (no != null) {
return await idSearch(what);
}
// is random pick?
else if (what.split(' ').any((x) => x == 'random') ||
what.split(' ').any((x) => x.startsWith('random:'))) {
return await _randomSearch(what, offset);
}
// is db search?
else if (!Settings.searchNetwork) {
return await _dbSearch(what, offset);
}
// is web search?
else {
return await _networkSearch(what, offset);
}
}
static Future<SearchResult> idSearch(String what) async {
final queryString = HitomiManager.translate2query(what);
final queryResult = (await (await DataBaseManager.getInstance())
.query('$queryString ORDER BY Id DESC LIMIT 1 OFFSET 0'))
.map((e) => QueryResult(result: e))
.toList();
final id = int.parse(what);
if (queryResult.isNotEmpty) {
return SearchResult(results: queryResult, offset: -1);
}
try {
final headers =
await ScriptManager.runHitomiGetHeaderContent(id.toString());
final hh = await http.get('https://ltn.hitomi.la/galleryblock/$id.html',
headers: headers);
final article = await HitomiParser.parseGalleryBlock(hh.body);
final meta = {
'Id': id,
'Title': article['Title'],
'Artists': article['Artists']?.join('|'),
'Language': article['Language'],
};
return SearchResult(results: [QueryResult(result: meta)], offset: -1);
} catch (e, st) {
Logger.error('[hentai-idSearch] E: $e\n'
'$st');
try {
final listHtml = await EHSession.requestString(
'https://e-hentai.org/?next=${(id + 1)}');
final href = parse(listHtml)
.querySelector('a[href*="/g/$id/"]')
?.attributes['href'];
final hash =
href!.split('/').lastWhere((element) => element.isNotEmpty);
final html = await EHSession.requestString(
'https://e-hentai.org/g/$id/$hash/?p=0&inline_set=ts_m');
final articleEh = EHParser.parseArticleData(html);
final meta = {
'Id': id,
'EHash': hash,
'Title': articleEh.title,
'Artists': articleEh.artist?.join('|') ?? 'N/A',
};
return SearchResult(results: [QueryResult(result: meta)], offset: -1);
} catch (e, st) {
Logger.error('[hentai-idSearch] E: $e\n'
'$st');
}
}
return const SearchResult(results: [], offset: -1);
}
// static double _latestSeed = 0;
static Future<SearchResult> _randomSearch(String what,
[int offset = 0]) async {
var wwhat = what.split(' ').where((x) => x != 'random').join(' ');
double? seed = -1.0;
if (what.split(' ').where((x) => x.startsWith('random:')).isNotEmpty) {
var tseed = what
.split(' ')
.where((x) => x.startsWith('random:'))
.first
.split('random:')
.last;
seed = double.tryParse(tseed);
wwhat = what.split(' ').where((x) => !x.startsWith('random:')).join(' ');
if (seed == null) {
Logger.error('[hentai-randomSearch] E: Seed must be double type!');
return const SearchResult(results: [], offset: -1);
}
}
final queryString = HitomiManager.translate2query(
'$wwhat ${Settings.includeTags} ${Settings.excludeTags.where((e) => e.trim() != '').map((e) => '-$e').join(' ').trim()}');
// if (offset == 0 && seed < 0) _latestSeed = new Random().nextDouble() + 1;
await Logger.info('[Database Query]\nSQL: $queryString');
const int itemsPerPage = 500;
final queryResult = (await (await DataBaseManager.getInstance())
.query('$queryString ORDER BY '
'Id * $seed - ROUND(Id * $seed - 0.5, 0) DESC'
' LIMIT $itemsPerPage OFFSET $offset'))
.map((e) => QueryResult(result: e))
.toList();
return SearchResult(
results: queryResult,
offset: queryResult.length >= itemsPerPage ? offset + itemsPerPage : -1,
);
}
static Future<SearchResult> _dbSearch(String what, [int offset = 0]) async {
final queryString = HitomiManager.translate2query(
'$what ${Settings.includeTags} ${Settings.excludeTags.where((e) => e.trim() != '').map((e) => '-$e').join(' ').trim()}');
await Logger.info('[Database Query]\nSQL: $queryString');
const int itemsPerPage = 500;
final queryResult = (await (await DataBaseManager.getInstance()).query(
'$queryString ORDER BY Id DESC LIMIT $itemsPerPage OFFSET $offset'))
.map((e) => QueryResult(result: e))
.toList();
return SearchResult(
results: queryResult,
offset: queryResult.length >= itemsPerPage ? offset + itemsPerPage : -1,
);
}
static Future<SearchResult> _networkSearch(String what,
[int offset = 0]) async {
var route = Settings.searchRule;
for (int i = 0; i < route.length; i++) {
try {
switch (route[i]) {
case 'EHentai':
var result = await searchEHentai(what, (offset ~/ 25).toString());
return SearchResult(
results: result,
offset: result.length >= 25 ? offset + 25 : -1,
);
case 'ExHentai':
var result =
await searchEHentai(what, (offset ~/ 25).toString(), true);
return SearchResult(
results: result,
offset: result.length >= 25 ? offset + 25 : -1,
);
case 'Hitomi':
// https://hiyobi.me/search/loli|sex
break;
case 'Hiyobi':
// https://hiyobi.me/search/loli|sex
break;
case 'NHentai':
break;
}
} catch (e, st) {
Logger.error('[hentai-_networkSearch] E: $e\n'
'$st');
}
}
// not taken
throw Exception('Never Taken');
}
static Future<int> countSearch(String what) async {
final queryString = HitomiManager.translate2query(
'$what ${Settings.includeTags} ${Settings.excludeTags.where((e) => e.trim() != '').map((e) => '-$e').join(' ').trim()}');
var count = (await (await DataBaseManager.getInstance()).query(queryString
.replaceAll('SELECT * FROM', 'SELECT COUNT(*) AS C FROM')))
.first['C'] as int;
return count;
}
static Future<VioletImageProvider> getImageProvider(QueryResult qr) async {
final route = Settings.routingRule;
do {
final v4 = ScriptManager.enableV4;
for (int i = 0; i < route.length; i++) {
try {
switch (route[i]) {
case 'EHentai':
if (qr.ehash() != null) {
var html = await EHSession.requestString(
'https://e-hentai.org/g/${qr.id()}/${qr.ehash()}/?p=0&inline_set=ts_m');
var article = EHParser.parseArticleData(html);
return EHentaiImageProvider(
count: article.length,
thumbnail: article.thumbnail,
pagesUrl: List<String>.generate(
(article.length / 40).ceil(),
(index) =>
'https://e-hentai.org/g/${qr.id()}/${qr.ehash()}/?p=$index'),
isEHentai: true,
);
}
break;
case 'ExHentai':
if (qr.ehash() != null) {
var html = await EHSession.requestString(
'https://exhentai.org/g/${qr.id()}/${qr.ehash()}/?p=0&inline_set=ts_m');
var article = EHParser.parseArticleData(html);
return EHentaiImageProvider(
count: article.length,
thumbnail: article.thumbnail,
pagesUrl: List<String>.generate(
(article.length / 40).ceil(),
(index) =>
'https://exhentai.org/g/${qr.id()}/${qr.ehash()}/?p=$index'),
isEHentai: false,
);
}
break;
case 'Hitomi':
{
var urls = await HitomiManager.getImageList(qr.id().toString());
if (urls.item1.isEmpty || urls.item2.isEmpty) break;
return HitomiImageProvider(urls, qr.id().toString());
}
case 'Hisoki':
{
var urls = await HisokiGetter.getImages(qr.id());
if (urls == null || urls.isEmpty) break;
return HisokiImageProvider(infos: urls, id: qr.id());
}
case 'NHentai':
if (qr.language() == null) {
var lang = qr.language() as String;
if (lang == 'english' ||
lang == 'japanese' ||
lang == 'chinese') {
// return HitomiImageProvider(
// await NHentaiManager.getImageList(qr.id().toString()));
}
}
break;
}
} catch (e, st) {
Logger.error('[hentai-getImageProvider] E: $e\n'
'$st');
}
}
if (v4) break;
await Future.delayed(const Duration(milliseconds: 500));
} while (true);
throw Exception('gallery not found');
}
static Future<List<QueryResult>> searchEHentai(String what, String page,
[bool exh = false]) async {
final search = Uri.encodeComponent(what);
final url =
'https://e${exh ? 'x' : '-'}hentai.org/?page=$page&f_cats=993&f_search=$search&advsearch=1&f_sname=on&f_stags=on&f_sh=on&f_spf=&f_spt=';
final cookie =
(await SharedPreferences.getInstance()).getString('eh_cookies') ?? '';
final html =
(await http.get(url, headers: {'Cookie': '$cookie;sl=dm_2'})).body;
final result = EHParser.parseReulstPageExtendedListView(html);
return result.map((element) {
var tag = <String>[];
if (element.descripts != null) {
if (element.descripts!['female'] != null) {
tag.addAll(element.descripts!['female']!.map((e) => 'female:$e'));
}
if (element.descripts!['male'] != null) {
tag.addAll(element.descripts!['male']!.map((e) => 'male:$e'));
}
if (element.descripts!['misc'] != null) {
tag.addAll(element.descripts!['misc']!);
}
}
var map = {
'Id': int.parse(element.url!.split('/')[4]),
'EHash': element.url!.split('/')[5],
'Title': element.title,
'Artists': element.descripts!['artist'] != null
? element.descripts!['artist']!.join('|')
: 'n/a',
'Groups': element.descripts!['group'] != null
? element.descripts!['group']!.join('|')
: null,
'Characters': element.descripts!['character'] != null
? element.descripts!['character']!.join('|')
: null,
'Series': element.descripts!['parody'] != null
? element.descripts!['parody']!.join('|')
: 'n/a',
'Language': element.descripts!['language'] != null
? element.descripts!['language']!
.where((element) => !element.contains('translate'))
.join('|')
: 'n/a',
'Tags': tag.join('|'),
'Uploader': element.uploader,
'PublishedEH': element.published,
'Files': element.files,
'Thumbnail': element.thumbnail,
'Type': element.type,
'URL': element.url,
};
return QueryResult(result: map);
}).toList();
}
}