const getElementTextByTagNames = (
element: Element, names: string[]
): string => {
const e = getElementByTagNames(element, names);
if (e === null) throw new Error(`no ${names.join('/')}`);
const text = getText(e);
if (text === null) throw new Error(`invalid ${names.join('/')}`);
return text;
};
const getEntry = (entry: Element): BlogEntry => {
const elements = entry.children.filter(isElement);
const authorName = getElementTextByTagNames(entry, ['author', 'name']);
const contentElement = getElementByTagNames(entry, ['content']);
if (contentElement === null) throw new Error('no content');
if (contentElement.children.length === 0 || (
contentElement.attributes.type !== 'text/html' &&
contentElement.attributes.type !== 'text/x-hatena-syntax' &&
contentElement.attributes.type !== 'text/x-markdown'
)) throw new Error('invalid content');
const content = getText(contentElement);
if (content === null) throw new Error('no content text');
const contentType = contentElement.attributes.type as BlogEntryContentType;
const draft = getElementTextByTagNames(entry, ['control', 'draft']) === 'yes';
const editUrlElement = elements.find((i) => {
return getUnprefixedName(i.name) === 'link' &&
i.attributes.rel === 'edit' &&
typeof i.attributes.href !== 'undefined';
});
if (typeof editUrlElement === 'undefined') throw new Error('no edit url');
const editUrl = editUrlElement.attributes.href;
const edited = getElementTextByTagNames(entry, ['edited']);
const formattedContent =
getElementTextByTagNames(entry, ['formatted-content']);
const htmlUrlElement = elements.find((i) => {
return getUnprefixedName(i.name) === 'link' &&
i.attributes.rel === 'alternate' &&
i.attributes.type === 'text/html' &&
typeof i.attributes.href !== 'undefined';
});
if (typeof htmlUrlElement === 'undefined') throw new Error('no html url');
const htmlUrl = htmlUrlElement.attributes.href;
const id = getElementTextByTagNames(entry, ['id']);
const published = getElementTextByTagNames(entry, ['published']);
const summary = getElementTextByTagNames(entry, ['summary']);
const title = getElementTextByTagNames(entry, ['title']);
const updated = getElementTextByTagNames(entry, ['updated']);
return {
authorName,
content,
contentType,
draft,
editUrl,
edited,
formattedContent,
htmlUrl,
id,
published,
summary,
title,
updated
};
};