use std::os::raw::{c_char, c_void};

/// # TIFF Warning Handler Definition
pub type TIFFWarningHandler = Option<unsafe extern "C" fn(module: *const c_char, fmt: *const c_char, ap: *mut c_void)>;

/// # TIFF Ignore Warnings Handle
unsafe extern "C" fn tiff_ignore_warning_handle(_module: *const c_char, _fmt: *const c_char, _ap: *mut std::ffi::c_void) {
    // Do nothing
}

#[link(name = "tiff")]
unsafe extern "C" {
    pub fn TIFFSetWarningHandler(handler: TIFFWarningHandler) -> TIFFWarningHandler;
}

/// # Ignore TIFF Warnings
pub fn tiff_ignore_warnings() {
    unsafe {
        let _ = TIFFSetWarningHandler(Some(tiff_ignore_warning_handle));
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        assert_eq!(0, 0);
    }

    #[test]
    fn ignore_warning_test() {
        tiff_ignore_warnings();
        assert_eq!(1, 1);
    }
}