// file: crates/ksp-app-wallet-desk/src/main.rs
// version: 1

//! Binary entry point for the KSP wallet desktop application.

#![forbid(unsafe_code)]
#![deny(unreachable_pub)]
#![warn(missing_docs)]
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

use fs2::FileExt; // rust-rules: trait-import

fn main() -> std::process::ExitCode {
    let working_directory = configure_runtime_working_directory();
    if let std::result::Result::Err(error) = working_directory {
        eprintln!("cannot configure Wallet Desk runtime working directory: {error}");
        return std::process::ExitCode::FAILURE;
    }
    let mut lock_path = std::env::temp_dir();
    lock_path.push("com_sasedev_ksp_app_wallet_desk.lock");
    let lock_file = match std::fs::OpenOptions::new().read(true).write(true).create(true).truncate(false).open(&lock_path) {
        std::result::Result::Ok(file) => file,
        std::result::Result::Err(error) => {
            eprintln!("cannot create application lock '{}': {error}", lock_path.display());
            return std::process::ExitCode::FAILURE;
        },
    };
    if let std::result::Result::Err(error) = lock_file.try_lock_exclusive() {
        if error.kind() == std::io::ErrorKind::WouldBlock {
            eprintln!("another ksp-app-wallet-desk instance is already running");
            return std::process::ExitCode::FAILURE;
        }
        eprintln!("cannot acquire application lock '{}': {error}", lock_path.display());
        return std::process::ExitCode::FAILURE;
    }
    let _lock_file = lock_file;
    let arguments = std::env::args_os().collect::<std::vec::Vec<std::ffi::OsString>>();
    let run_result = ksp_app_wallet_desk_lib::run(arguments.as_slice());
    return match run_result {
        std::result::Result::Ok(()) => std::process::ExitCode::SUCCESS,
        std::result::Result::Err(error) => {
            eprintln!("application error: {error}");
            std::process::ExitCode::FAILURE
        },
    };
}

fn configure_runtime_working_directory() -> std::io::Result<()> {
    #[cfg(debug_assertions)]
    {
        let workspace_root = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("../..");
        return std::env::set_current_dir(workspace_root);
    }
    #[cfg(not(debug_assertions))]
    {
        return std::result::Result::Ok(());
    }
}