use core::panic::PanicInfo;
use core::fmt::Write;

extern "C" {
    fn done();
}

#[cfg(not(test))]
#[panic_handler]
fn panic(panic: &PanicInfo<'_>) -> ! {
    // unsafe { this breaks in ISR
    //     osal::stop_it();
    // }
    _ = writeln!(crate::fsrc::sif::Stderr {}, "");
    _ = writeln!(
        crate::fsrc::sif::Stderr {},
        "Thread '{}' {}",
        crate::fsrc::osal::thread::current().name(),
        panic
    );
    //TODO: stop RTOS, exit if hosted
    unsafe { done() };
    loop {}
}

#[no_mangle]
extern "C" fn rust_assert_called(ptr: *const core::ffi::c_char, line: core::ffi::c_ulong) {
    let file_name = unsafe {
        //TODO is from_ptr safe enough?
        let file_name = core::ffi::CStr::from_ptr(ptr);
        let file_name_utf8 = core::str::from_utf8(file_name.to_bytes());
        match file_name_utf8 {
            Ok(string) => string,
            Err(_) => "Schei� Encoding",
        }
    };

    panic!("assertion failed at {file_name}:{line}");
}

#[no_mangle]
extern "C" fn rust_alloc_failed() {
    panic!("allocation failed!");
}