rudeshark.net/src/server/api/endpoints/notes/context.ts

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/**
* Module dependencies
*/
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import $ from 'cafy';
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import Note, { pack } from '../../../../models/note';
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/**
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* Show a context of a note
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*
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* @param {any} params
* @param {any} user
* @return {Promise<any>}
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*/
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module.exports = (params, user) => new Promise(async (res, rej) => {
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// Get 'noteId' parameter
const [noteId, noteIdErr] = $(params.noteId).id().$;
if (noteIdErr) return rej('invalid noteId param');
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// Get 'limit' parameter
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const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
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if (limitErr) return rej('invalid limit param');
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// Get 'offset' parameter
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const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
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if (offsetErr) return rej('invalid offset param');
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// Lookup note
const note = await Note.findOne({
_id: noteId
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});
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if (note === null) {
return rej('note not found');
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}
const context = [];
let i = 0;
async function get(id) {
i++;
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const p = await Note.findOne({ _id: id });
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if (i > offset) {
context.push(p);
}
if (context.length == limit) {
return;
}
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if (p.replyId) {
await get(p.replyId);
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}
}
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if (note.replyId) {
await get(note.replyId);
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}
// Serialize
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res(await Promise.all(context.map(async note =>
await pack(note, user))));
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});