max / makenotwork

2.3 KB · 64 lines History Blame Raw

1	use std::collections::hash_map::DefaultHasher;
2	use std::hash::{Hash, Hasher};
3	use std::process::Command;
4	use std::{fs, path::Path};
5
6	fn main() {
7	// Set GIT_HASH env var for compile-time inclusion via option_env!()
8	let hash = Command::new("git")
9	.args(["rev-parse", "--short", "HEAD"])
10	.output()
11	.ok()
12	.filter(\|o\| o.status.success())
13	.and_then(\|o\| String::from_utf8(o.stdout).ok())
14	.map(\|s\| s.trim().to_string())
15	.unwrap_or_default();
16
17	println!("cargo::rustc-env=GIT_HASH={}", hash);
18	// Only re-run when HEAD changes
19	println!("cargo::rerun-if-changed=.git/HEAD");
20
21	// --- Static asset fingerprinting ---
22	// Hash the content of key static files to produce a version suffix.
23	// When any watched file changes, URLs in templates get a new ?v= param,
24	// busting browser caches automatically.
25	let static_files = [
26	"static/style.css",
27	"static/htmx.min.js",
28	"static/upload.js",
29	"static/passkey.js",
30	"static/insertions.js",
31	];
32
33	let mut hasher = DefaultHasher::new();
34	for path in &static_files {
35	println!("cargo::rerun-if-changed={}", path);
36	if let Ok(content) = fs::read(path) {
37	content.hash(&mut hasher);
38	}
39	}
40	let static_hash = format!("{:016x}", hasher.finish());
41	let version = &static_hash[..8];
42
43	// Generate a template partial with versioned asset URLs.
44	// base.html includes this via {% include "_head_assets.html" %}
45	let partial = format!(
46	r#" <link rel="preload" href="/static/fonts/Lato-Regular.woff2" as="font" type="font/woff2" crossorigin>
47	<link rel="preload" href="/static/fonts/ysrf.woff2" as="font" type="font/woff2" crossorigin>
48	<link rel="stylesheet" href="/static/style.css?v={v}">
49	<link rel="icon" href="/static/images/favicon.ico" type="image/x-icon">
50	<script src="/static/htmx.min.js"></script>
51	<script src="/static/upload.js?v={v}"></script>"#,
52	v = version,
53	);
54
55	let out_path = Path::new("templates/_head_assets.html");
56	// Only write if content changed (avoids unnecessary recompilation)
57	let needs_write = fs::read_to_string(out_path)
58	.map(\|existing\| existing != partial)
59	.unwrap_or(true);
60	if needs_write {
61	fs::write(out_path, &partial).expect("failed to write _head_assets.html");
62	}
63	}
64