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inpx-web/server/core/opds/BookPage.js

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JavaScript
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const path = require('path');
const _ = require('lodash');
const dayjs = require('dayjs');
const BasePage = require('./BasePage');
const Fb2Parser = require('../fb2/Fb2Parser');
class BookPage extends BasePage {
constructor(config) {
super(config);
this.id = 'book';
this.title = 'Книга';
}
formatSize(size) {
size = size/1024;
let unit = 'KB';
if (size > 1024) {
size = size/1024;
unit = 'MB';
}
return `${size.toFixed(1)} ${unit}`;
}
convertGenres(genreArr) {
let result = [];
if (genreArr) {
for (const genre of genreArr) {
const g = genre.trim();
const name = this.genreMap.get(g);
result.push(name ? name : g);
}
}
return result.join(', ');
}
inpxInfo(bookRec) {
const mapping = [
{name: 'fileInfo', label: 'Информация о файле', value: [
{name: 'folder', label: 'Папка'},
{name: 'file', label: 'Файл'},
{name: 'size', label: 'Размер'},
{name: 'date', label: 'Добавлен'},
{name: 'del', label: 'Удален'},
{name: 'libid', label: 'LibId'},
{name: 'insno', label: 'InsideNo'},
]},
{name: 'titleInfo', label: 'Общая информация', value: [
{name: 'author', label: 'Автор(ы)'},
{name: 'title', label: 'Название'},
{name: 'series', label: 'Серия'},
{name: 'genre', label: 'Жанр'},
{name: 'librate', label: 'Оценка'},
{name: 'lang', label: 'Язык книги'},
{name: 'keywords', label: 'Ключевые слова'},
]},
];
const valueToString = (value, nodePath, b) => {//eslint-disable-line no-unused-vars
if (nodePath == 'fileInfo/file')
return `${value}.${b.ext}`;
if (nodePath == 'fileInfo/size')
return `${this.formatSize(value)} (${value.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1 ')} Bytes)`;
if (nodePath == 'fileInfo/date')
return dayjs(value, 'YYYY-MM-DD').format('DD.MM.YYYY');
if (nodePath == 'fileInfo/del')
return (value ? 'Да' : null);
if (nodePath == 'fileInfo/insno')
return (value ? value : null);
if (nodePath == 'titleInfo/author')
return value.split(',').join(', ');
if (nodePath == 'titleInfo/genre')
return this.convertGenres(value.split(','));
if (nodePath == 'titleInfo/librate' && !value)
return null;
if (typeof(value) === 'string') {
return value;
}
return (value.toString ? value.toString() : '');
};
let result = [];
const book = _.cloneDeep(bookRec);
book.series = [book.series, book.serno].filter(v => v).join(' #');
for (const item of mapping) {
const itemOut = {name: item.name, label: item.label, value: []};
for (const subItem of item.value) {
const subItemOut = {
name: subItem.name,
label: subItem.label,
value: valueToString(book[subItem.name], `${item.name}/${subItem.name}`, book)
};
if (subItemOut.value)
itemOut.value.push(subItemOut);
}
if (itemOut.value.length)
result.push(itemOut);
}
return result;
}
htmlInfo(title, infoList) {
let info = '';
for (const part of infoList) {
if (part.value.length)
info += `<h3>${part.label}</h3>`;
for (const rec of part.value)
info += `<p>${rec.label}: ${rec.value}</p>`;
}
if (info)
info = `<h2>${title}</h2>${info}`;
return info;
}
async body(req) {
const result = {};
this.genreMap = await this.webWorker.getGenreMap();
result.link = this.baseLinks(req, true);
const bookUid = req.query.uid;
const entry = [];
if (bookUid) {
const {bookInfo} = await this.webWorker.getBookInfo(bookUid);
if (bookInfo) {
const {genreMap} = await this.getGenres();
//format
const ext = bookInfo.book.ext;
const formats = {
[`${ext}+zip`]: `${bookInfo.link}/zip`,
[ext]: bookInfo.link,
};
if (ext === 'mobi') {
formats['x-mobipocket-ebook'] = bookInfo.link;
} else if (ext == 'epub') {
formats[`${ext}+zip`] = bookInfo.link;
}
//entry
const e = this.makeEntry({
id: bookUid,
title: bookInfo.book.title || 'Без названия',
});
//author bookInfo
if (bookInfo.book.author) {
e.author = bookInfo.book.author.split(',').map(a => ({name: a}));
}
e['dc:language'] = bookInfo.book.lang;
e['dc:format'] = ext;
//genre
const genre = bookInfo.book.genre.split(',');
for (const g of genre) {
const genreName = genreMap.get(g);
if (genreName) {
if (!e.category)
e.category = [];
e.category.push({
'*ATTRS': {term: genreName, label: genreName},
});
}
}
let content = '';
let ann = '';
let info = '';
//fb2 info
if (bookInfo.fb2) {
const parser = new Fb2Parser(bookInfo.fb2);
const infoObj = parser.bookInfo();
if (infoObj.titleInfo) {
//author fb2Info
if (!e.author && infoObj.titleInfo.author.length) {
e.author = infoObj.titleInfo.author.map(a => ({name: a}));
}
ann = infoObj.titleInfo.annotationHtml || '';
const self = this;
const infoList = parser.bookInfoList(infoObj, {
valueToString(value, nodePath, origVTS) {//eslint-disable-line no-unused-vars
if ((nodePath == 'titleInfo/genre' || nodePath == 'srcTitleInfo/genre') && value) {
return self.convertGenres(value);
}
return origVTS(value, nodePath);
},
});
info += this.htmlInfo('Fb2 инфо', infoList);
}
}
//content
info += this.htmlInfo('Inpx инфо', this.inpxInfo(bookInfo.book));
content = `${ann}${info}`;
if (content) {
e.content = {
'*ATTRS': {type: 'text/html'},
'*TEXT': this.escape(content),
};
}
//links
e.link = [];
for (const [fileFormat, downHref] of Object.entries(formats))
e.link.push(this.downLink({href: downHref, type: `application/${fileFormat}`}));
if (bookInfo.cover) {
let coverType = 'image/jpeg';
if (path.extname(bookInfo.cover) == '.png')
coverType = 'image/png';
e.link.push(this.imgLink({href: bookInfo.cover, type: coverType}));
e.link.push(this.imgLink({href: bookInfo.cover, type: coverType, thumb: true}));
}
entry.push(e);
}
}
result.entry = entry;
return this.makeBody(result, req);
}
}
module.exports = BookPage;