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