2021-12-01 16:36:52 +01:00
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const { URL, SITE_NAME, PROXY_URL, THUMBNAIL_HEIGHT, THUMBNAIL_WIDTH } = require('../../config.js');
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2021-11-30 03:27:56 +01:00
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const {
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2021-12-01 16:36:52 +01:00
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generateEmbedIframeData,
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generateEmbedUrl,
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getParameterByName,
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getThumbnailCdnUrl,
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} = require('../../ui/util/web');
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2021-11-30 03:27:56 +01:00
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const { lbryProxy: Lbry } = require('../lbry');
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2021-12-01 16:36:52 +01:00
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Lbry.setDaemonConnectionString(PROXY_URL);
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2021-11-30 03:27:56 +01:00
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// ****************************************************************************
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// Fetch claim info
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// ****************************************************************************
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async function getClaim(requestUrl) {
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const uri = requestUrl.replace(`${URL}/`, 'lbry://');
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let claim;
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let error;
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try {
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const response = await Lbry.resolve({ urls: [uri] });
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if (response && response[uri] && !response[uri].error) {
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claim = response[uri];
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}
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} catch {}
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if (!claim) {
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error = 'The URL is invalid or is not associated with any claim.';
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} else {
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const { value_type, value } = claim;
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if (value_type !== 'stream' || value.stream_type !== 'video') {
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error = 'The URL is not associated with a video claim.';
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}
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}
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return { claim, error };
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}
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// ****************************************************************************
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// Generate
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// ****************************************************************************
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2021-12-01 16:36:52 +01:00
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function generateOEmbedData(claim, referrerQuery) {
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2021-11-30 03:27:56 +01:00
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const { value, signing_channel: authorClaim } = claim;
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const claimTitle = value.title;
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const authorName = authorClaim ? authorClaim.value.title || authorClaim.name : 'Anonymous';
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2021-12-01 16:36:52 +01:00
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const authorUrlPath = authorClaim && authorClaim.canonical_url.replace('lbry://', '').replace('#', ':');
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const authorUrl = authorClaim ? `${URL}/${authorUrlPath}` : null;
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const thumbnailUrl = value && value.thumbnail && value.thumbnail.url && getThumbnailCdnUrl(value.thumbnail.url);
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2021-12-01 16:36:52 +01:00
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const videoUrl = generateEmbedUrl(claim.name, claim.claim_id) + (referrerQuery ? `r=${referrerQuery}` : '');
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const { html, width, height } = generateEmbedIframeData(videoUrl);
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2021-11-30 03:27:56 +01:00
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return {
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type: 'video',
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version: '1.0',
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title: claimTitle,
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author_name: authorName,
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author_url: authorUrl,
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provider_name: SITE_NAME,
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provider_url: URL,
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thumbnail_url: thumbnailUrl,
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thumbnail_width: THUMBNAIL_WIDTH,
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thumbnail_height: THUMBNAIL_HEIGHT,
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2021-12-01 16:36:52 +01:00
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html: html,
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width: width,
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height: height,
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2021-11-30 03:27:56 +01:00
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};
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}
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2021-12-01 16:36:52 +01:00
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function generateXmlData(oEmbedData) {
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const {
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type,
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version,
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title,
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author_name,
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author_url,
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provider_name,
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provider_url,
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thumbnail_url,
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thumbnail_width,
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thumbnail_height,
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html,
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width,
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height,
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} = oEmbedData;
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return (
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'<?xml version="1.0" encoding="utf-8"?>' +
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'<oembed>' +
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`<type>${type}</type>` +
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`<version>${version}</version>` +
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`<title>${title}</title>` +
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`<author_name>${author_name}</author_name>` +
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`<author_url>${author_url}</author_url>` +
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`<provider_name>${provider_name}</provider_name>` +
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`<provider_url>${provider_url}</provider_url>` +
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`<thumbnail_url>${thumbnail_url}</thumbnail_url>` +
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`<thumbnail_width>${thumbnail_width}</thumbnail_width>` +
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`<thumbnail_height>${thumbnail_height}</thumbnail_height>` +
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`<html>${html}</html>` +
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`<width>${width}</width>` +
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`<height>${height}</height>` +
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'<oembed>'
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);
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}
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async function getOEmbed(ctx) {
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const requestUrl = ctx.request.url;
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const urlQuery = getParameterByName('url', requestUrl);
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2021-11-30 03:27:56 +01:00
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2021-12-01 16:36:52 +01:00
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const { claim, error } = await getClaim(urlQuery);
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2021-11-30 03:27:56 +01:00
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if (error) return error;
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2021-12-01 16:36:52 +01:00
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const referrerQuery = getParameterByName('r', requestUrl);
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const oEmbedData = generateOEmbedData(claim, referrerQuery);
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const formatQuery = getParameterByName('format', requestUrl);
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if (formatQuery === 'xml') {
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ctx.set('Content-Type', 'application/xml');
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const xmlData = generateXmlData(oEmbedData);
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return xmlData;
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}
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ctx.set('Content-Type', 'application/json');
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2021-11-30 03:27:56 +01:00
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return oEmbedData;
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}
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module.exports = { getOEmbed };
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