//! ref: composer/bin/composer

use shirabe_php_shim::{PHP_ENV, PHP_SERVER};

fn main() {
    // TODO(phase-c): PHP: `$xdebug = new XdebugHandler('Composer'); $xdebug->check(); unset($xdebug);`
    // (restart the process without Xdebug loaded, for performance) is not ported. Since no
    // XdebugHandler is ever constructed, `self::$name` never gets set, so the
    // COMPOSER_ORIGINAL_INIS-env-var branch of XdebugHandler::getAllIniFiles() (see
    // shirabe-external-packages' xdebug_handler.rs and shirabe/src/util/ini_helper.rs) is
    // unreachable in this port, not merely unexercised by current tests.

    // Take the $_ENV / $_SERVER snapshots before any putenv() mutates the real environment.
    // See `docs/dev/env-vars-porting.md` for details.
    std::sync::LazyLock::force(&PHP_ENV);
    std::sync::LazyLock::force(&PHP_SERVER);

    // The single process-wide tokio Runtime. `shirabe::run` and everything under it
    // (Command::execute and friends) is still synchronous top to bottom; entering the runtime
    // here (rather than driving `run` via `.block_on`) just makes it ambiently available via
    // `Handle::try_current()` for `util::sync_executor::block_on`'s many scattered call sites,
    // which ride it through `tokio::task::block_in_place` instead of each spinning up (or
    // busy-spin-polling without) their own. See sync_executor.rs for the TODO(phase-e) tracking
    // the eventual goal of propagating `async fn` all the way up to here instead.
    let runtime = tokio::runtime::Builder::new_multi_thread()
        .enable_all()
        .build()
        .expect("failed to build the top-level tokio runtime");
    let _runtime_guard = runtime.enter();

    let result = shirabe::run(std::env::args().collect());
    let exit_code = match result {
        Ok(exit_code) => exit_code,
        Err(e) => {
            eprintln!("{}", e);
            1
        }
    };
    std::process::exit(exit_code.min(255));
}