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use std::os::raw::c_char;

use crate::str_to_gostr;
use crate::util::go_type::{GoString, FFIError};
use crate::util::util::c_char_to_str;

extern "C" {
    fn ffi_gophernize(name: GoString) -> *const c_char;
}

#[derive(PartialEq, Debug)]
pub enum GophernizeError {
    Utf8Error(std::str::Utf8Error),
    NulError(std::ffi::NulError),
}

pub fn gophernize(name: &str) -> Result<String, FFIError> {
    str_to_gostr!(name => input);
    let result = unsafe { ffi_gophernize(input) };
    c_char_to_str(result)
}

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

    #[test]
    fn gophernize_works() {
        let result = gophernize("test string");
        assert_eq!(Ok("test string ʕ ◔ϖ◔ʔ".to_string()), result);
    }
}