re_web_viewer_server 0.7.0

#![allow(clippy::unwrap_used)]

fn rerun_if_changed(path: &str) {
    // Make sure the file exists, otherwise we'll be rebuilding all the time.
    assert!(std::path::Path::new(path).exists(), "Failed to find {path}");
    println!("cargo:rerun-if-changed={path}");
}

fn get_and_track_env_var(env_var_name: &str) -> Result<String, std::env::VarError> {
    println!("cargo:rerun-if-env-changed={env_var_name}");
    std::env::var(env_var_name)
}

fn is_tracked_env_var_set(env_var_name: &str) -> bool {
    let var = get_and_track_env_var(env_var_name).map(|v| v.to_lowercase());
    var == Ok("1".to_owned()) || var == Ok("yes".to_owned()) || var == Ok("true".to_owned())
}

fn main() {
    if !is_tracked_env_var_set("IS_IN_RERUN_WORKSPACE") {
        // Only run if we are in the rerun workspace, not on users machines.
        return;
    }
    if is_tracked_env_var_set("RERUN_IS_PUBLISHING") {
        // We don't need to rebuild - we should have done so beforehand!
        // See `RELEASES.md`
        return;
    }

    // Rebuild the web-viewer Wasm,
    // because the web_server library bundles it with `include_bytes!`.

    rerun_if_changed("../../web_viewer/favicon.svg");
    rerun_if_changed("../../web_viewer/index.html");
    rerun_if_changed("../../web_viewer/sw.js");

    // We implicitly depend on re_viewer, which means we also implicitly depend on
    // all of its direct and indirect dependencies (which are potentially in-workspace
    // or patched!).
    re_build_build_info::rebuild_if_crate_changed("re_viewer");

    if get_and_track_env_var("CARGO_FEATURE___CI").is_ok() {
        // If the `__ci` feature is set we skip building the web viewer wasm, saving a lot of time.
        // This feature is set on CI (hence the name), but also with `--all-features`, which is set by rust analyzer, bacon, etc.
        eprintln!("__ci feature detected: Skipping building of web viewer wasm.");
    } else {
        let release = std::env::var("PROFILE").unwrap() == "release";
        if let Err(err) =
            re_build_web_viewer::build(release, is_tracked_env_var_set("RERUN_BUILD_WEBGPU"))
        {
            panic!("Failed to build web viewer: {}", re_error::format(err));
        }
    }
}