random name for back alley

src/build/mod.rs

@@ -11,6 +11,7 @@ use color_eyre::{eyre::Context, Result};
 use crate::Config;
 
 pub fn assemble_website(
+    rng: &mut rand::rngs::StdRng,
     config: &Config,
     statics: &Path,
     submodules: &Path,
@@ -24,7 +25,7 @@ pub fn assemble_website(
     )
     .wrap_err("building slides")?;
 
-    statics::build(&config.slides, statics, dist).wrap_err("building root files")?;
+    statics::build(rng, &config.slides, statics, dist).wrap_err("building root files")?;
 
     add_cname(dist)?;
 

src/build/statics.rs

@@ -4,6 +4,7 @@ use std::{fs, path::Path};
 
 use askama::Template;
 use color_eyre::{eyre::WrapErr, Result};
+use rand::seq::SliceRandom;
 
 use crate::{utils, SlidesConfig, Talk};
 
@@ -13,9 +14,33 @@ struct Slides {
     talks: Vec<Talk>,
 }
 
-pub fn build(config: &SlidesConfig, statics: &Path, dist: &Path) -> Result<()> {
+pub fn build(
+    rng: &mut rand::rngs::StdRng,
+    config: &SlidesConfig,
+    statics: &Path,
+    dist: &Path,
+) -> Result<()> {
+    let back_alley_name = b"abcdefghijklmnopqrstuvwxyz"
+        .choose_multiple(rng, 6)
+        .map(|&c| char::from_u32(c.into()).unwrap())
+        .collect::<String>();
+
+    let back_alley_name = format!("back-alley-{back_alley_name}.html");
+
     utils::cp_content(&statics.join("root"), dist).wrap_err("copying root files")?;
 
+    let back_alley = dist.join("back-alley.html");
+    std::fs::copy(&back_alley, dist.join(&back_alley_name)).wrap_err("copying back-alley.html")?;
+    fs::remove_file(back_alley).wrap_err("deleting normal back-alley.html")?;
+
+    let index_html = dist.join("index.html");
+    let index = fs::read_to_string(&index_html).wrap_err("reading index.html")?;
+    fs::write(
+        index_html,
+        index.replace("back-alley.html", &back_alley_name),
+    )
+    .wrap_err("writing back index.html")?;
+
     let slide_html = Slides {
         talks: config.talks.clone(),
     }

src/main.rs

@@ -16,6 +16,7 @@ use color_eyre::{
     Result,
 };
 use notify::{RecursiveMode, Watcher};
+use rand::SeedableRng;
 use serde::Deserialize;
 use tracing::level_filters::LevelFilter;
 use tracing_subscriber::EnvFilter;
@@ -74,14 +75,18 @@ fn main() -> Result<()> {
             Ok(())
         }
         Some("watch") => watch(root),
-        Some("build") => build(root),
+        Some("build") => build(&mut rand::rngs::StdRng::from_entropy(), root),
         Some(cmd) => bail!("invalid subcommand {cmd}"),
         None => bail!("no subcommand provided"),
     }
 }
 
 fn watch(root: &'static Path) -> Result<()> {
-    build(root).wrap_err("initial build")?;
+    let seed: u64 = rand::random();
+
+    let rng = move || rand::rngs::StdRng::seed_from_u64(seed);
+
+    build(&mut rng(), root).wrap_err("initial build")?;
     let (send, recv) = std::sync::mpsc::sync_channel(1);
     let mut watcher = notify::recommended_watcher(move |res| match res {
         Ok(_) => {
@@ -130,7 +135,7 @@ fn watch(root: &'static Path) -> Result<()> {
 
             last = now;
             info!("Received update, rebuilding");
-            if let Err(e) = build(root) {
+            if let Err(e) = build(&mut rng(), root) {
                 error!(?e);
             }
         }
@@ -139,7 +144,7 @@ fn watch(root: &'static Path) -> Result<()> {
     .map_err(|_| eyre!("build thread panicked"))
 }
 
-fn build(root: &Path) -> Result<()> {
+fn build(rng: &mut rand::rngs::StdRng, root: &Path) -> Result<()> {
     let config =
         std::fs::read_to_string(root.join("config.toml")).wrap_err("reading config.toml")?;
     let config = toml::from_str::<Config>(&config).wrap_err("parsing config.toml")?;
@@ -152,7 +157,13 @@ fn build(root: &Path) -> Result<()> {
     submodule::sync(&submodules_path, &sub_config).wrap_err("syncing subtrees")?;
 
     let dist_path = root.join("dist");
-    build::assemble_website(&config, &root.join("static"), &submodules_path, &dist_path)?;
+    build::assemble_website(
+        rng,
+        &config,
+        &root.join("static"),
+        &submodules_path,
+        &dist_path,
+    )?;
 
     Ok(())
 }