misskey/packages/backend/src/server/api/endpoints/notes/show.ts

import $ from 'cafy';
import { ID } from '@/misc/cafy-id';
import define from '../../define';
import { getNote } from '../../common/getters';
import { ApiError } from '../../error';
import { Notes } from '@/models/index';

export const meta = {
	tags: ['notes'],

	requireCredential: false as const,

	params: {
		noteId: {
			validator: $.type(ID),
		},
	},

	res: {
		type: 'object' as const,
		optional: false as const, nullable: false as const,
		ref: 'Note',
	},

	errors: {
		noSuchNote: {
			message: 'No such note.',
			code: 'NO_SUCH_NOTE',
			id: '24fcbfc6-2e37-42b6-8388-c29b3861a08d',
		},
	},
};

export default define(meta, async (ps, user) => {
	const note = await getNote(ps.noteId).catch(e => {
		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
		throw e;
	});

	return await Notes.pack(note, user, {
		detail: true,
	});
});