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// @flow
import type { DBThread } from 'shared/types';
import { signImageUrl } from 'shared/imgix';
const url = require('url');
const signBody = (body?: string, expires?: number): string => {
if (!body) {
return JSON.stringify({
blocks: [
{
key: 'foo',
text: '',
type: 'unstyled',
depth: 0,
inlineStyleRanges: [],
entityRanges: [],
data: {},
},
],
entityMap: {},
});
}
const returnBody = JSON.parse(body);
const imageKeys = Object.keys(returnBody.entityMap).filter(
key => returnBody.entityMap[key].type.toLowerCase() === 'image'
);
imageKeys.forEach((key, index) => {
if (!returnBody.entityMap[key]) return;
const { src } = returnBody.entityMap[key].data;
// transform the body inline with signed image urls
const imageUrlStoredAsSigned =
src &&
(src.indexOf('https://spectrum.imgix.net') >= 0 ||
src.indexOf('https://spectrum-proxy.imgix.net') >= 0);
// if the image was stored in the db as a signed url (eg. after the plaintext update to the thread editor)
// we need to remove all query params from the src, then re-sign in order to avoid duplicate signatures
// or sending down a url with an expired signature
if (imageUrlStoredAsSigned) {
const { pathname } = url.parse(src);
// always attempt to use the parsed pathname, but fall back to the original src
const sanitized = decodeURIComponent(
pathname ? pathname.replace(/^\//, '') : src
);
returnBody.entityMap[key].data.src = signImageUrl(sanitized, { expires });
} else {
returnBody.entityMap[key].data.src = signImageUrl(src, { expires });
}
});
return JSON.stringify(returnBody);
};
export const signThread = (thread: DBThread, expires?: number): DBThread => {
const { content, ...rest } = thread;
return {
...rest,
content: {
...content,
body: signBody(content.body, expires),
},
};
};
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