use std::cell::RefCell;
use std::ffi::{CString, c_char};
use thiserror::Error as TeError;

mod last_error;
mod string_cache;
mod wrapper;

// region: Error

/// Error occurs in this crate.
#[derive(Debug, TeError)]
enum Error {
    /// Error occurs in wfassoc core.
    #[error("{0}")]
    Core(#[from] wfassoc::Error),

    #[error("error occurs when parsing into C/C++ string")]
    CastIntoCStr(#[from] std::ffi::NulError),
    #[error("error occurs when parsing from C/C++ string")]
    CastFromCStr(#[from] std::ffi::IntoStringError),
}

/// Result type used in this crate.
type Result<T> = std::result::Result<T, Error>;

// endregion

// region: Macros


// endregion

#[unsafe(no_mangle)]
pub extern "C" fn WFStartup() -> bool {
    false
}

#[unsafe(no_mangle)]
pub extern "C" fn WFShutdown() -> bool {
    false
}

#[unsafe(no_mangle)]
pub extern "C" fn WFGetLastError() -> *const c_char {
    last_error::get_last_error()
}

#[unsafe(no_mangle)]
pub extern "C" fn WFHasPrivilege() -> bool {
    wfassoc::utilities::has_privilege()
}

#[unsafe(no_mangle)]
pub extern "C" fn WFAdd(left: u32, right: u32, rv: *mut u32) -> bool {
    unsafe { *rv = left + right; }
    return true;
}