use std::{env, path::Path};

use abi_generator::{
    abi::{ty::TypeWidth, AbiBuilder},
    syntax::UnwrapFancy,
    TargetEnv,
};

fn main() {
    println!("cargo:rerun-if-changed={}", "syscall.abi");
    let output_dir = env::var("OUT_DIR").unwrap();
    let output = Path::new(&output_dir);

    let abi = AbiBuilder::from_file(
        "syscall.abi",
        TargetEnv {
            thin_pointer_width: TypeWidth::U64,
            fat_pointer_width: TypeWidth::U128,
        },
    )
    .unwrap_fancy("syscall.abi");

    let types_file = prettyplease::unparse(
        &abi.emit_file(true, false)
            .unwrap_fancy("Could not emit generated types"),
    );
    let syscalls_file = prettyplease::unparse(
        &abi.emit_file(false, true)
            .unwrap_fancy("Could not emit generated syscalls"),
    );

    std::fs::write(output.join("generated_types.rs"), types_file).unwrap();
    std::fs::write(output.join("generated_syscalls.rs"), syscalls_file).unwrap();
}