1import { exec } from "child_process";
2import { Platform } from "obsidian";
3
4const XATTR_PREFIX = "com.sublimated.";
5const XATTR_SUFFIX = "#PS";
6
7export interface FileMetadata {
8	version: string | null;
9	commit: string | null;
10	url: string | null;
11	contentHash: string | null;
12	id: string | null;
13	createdBy: string | null;
14	modifiedBy: string | null;
15	modifiedByType: string | null;
16	syncStatus: string | null;
17	space: string | null;
18	branch: string | null;
19	modifiedAt: string | null;
20	visibility: string | null;
21}
22
23const ATTRS: (keyof FileMetadata)[] = [
24	"version",
25	"commit",
26	"url",
27	"contentHash",
28	"id",
29	"createdBy",
30	"modifiedBy",
31	"modifiedByType",
32	"syncStatus",
33	"space",
34	"branch",
35	"modifiedAt",
36];
37
38function attrToXattrName(attr: string): string {
39	// camelCase → kebab-case: contentHash → content-hash
40	const kebab = attr.replace(/[A-Z]/g, (c) => "-" + c.toLowerCase());
41	return `${XATTR_PREFIX}${kebab}${XATTR_SUFFIX}`;
42}
43
44function readXattr(path: string, xattrName: string): Promise<string | null> {
45	return new Promise((resolve) => {
46		exec(
47			`xattr -p ${JSON.stringify(xattrName)} ${JSON.stringify(path)}`,
48			{ timeout: 2000 },
49			(err, stdout) => {
50				if (err) {
51					resolve(null);
52					return;
53				}
54				resolve(stdout.trim() || null);
55			}
56		);
57	});
58}
59
60export async function readFileMetadata(
61	path: string
62): Promise<FileMetadata | null> {
63	if (!Platform.isMacOS) return null;
64
65	const results = await Promise.all(
66		ATTRS.map((attr) => readXattr(path, attrToXattrName(attr)))
67	);
68
69	// If no xattrs found at all, this isn't a sublimated file
70	if (results.every((r) => r === null)) return null;
71
72	const meta: FileMetadata = {
73		version: null, commit: null, url: null, contentHash: null,
74		id: null, createdBy: null, modifiedBy: null, modifiedByType: null,
75		syncStatus: null, space: null, branch: null, modifiedAt: null,
76	};
77	ATTRS.forEach((attr, i) => {
78		meta[attr] = results[i];
79	});
80	return meta;
81}
82
83export function isMacOS(): boolean {
84	return Platform.isMacOS;
85}