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

mod object_pool;
mod last_error;
mod cstr_ffi;
mod wrapper;

// region: Error

/// Error occurs in this crate.
#[derive(Debug, TeError)]
enum Error {
    /// Error when operating Schema.
    #[error("{0}")]
    Schema(#[from] wfassoc::highlevel::SchemaError),
    /// Error when parsing Schema into Program.
    #[error("{0}")]
    ParseProgram(#[from] wfassoc::highlevel::ParseProgramError),
    /// Error when operating Program.
    #[error("{0}")]
    Program(#[from] wfassoc::highlevel::ProgramError),

    /// Error when manipulating with C-style string.
    #[error("{0}")]
    CStrFfi(#[from] cstr_ffi::Error),
}

/// 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 {
    true
}

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

#[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::win32::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;
}