// Generated by `wit-bindgen-wrpc-go` 0.1.1. DO NOT EDIT!
package handler

import (
	context "context"
	errors "errors"
	fmt "fmt"
	wrpc "github.com/wrpc/wrpc/go"
	io "io"
	slog "log/slog"
	utf8 "unicode/utf8"
)

func Hello(ctx__ context.Context, wrpc__ wrpc.Invoker) (r0__ string, close__ func() error, err__ error) {
	if err__ = wrpc__.Invoke(ctx__, "wrpc-examples:hello/handler", "hello", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error {
		close__ = r__.Close
		_, err__ = w__.Write(nil)
		if err__ != nil {
			return fmt.Errorf("failed to write empty parameters: %w", err__)
		}
		r0__, err__ = func(r interface {
			io.ByteReader
			io.Reader
		}) (string, error) {
			var x uint32
			var s uint8
			for i := 0; i < 5; i++ {
				slog.Debug("reading string length byte", "i", i)
				b, err := r.ReadByte()
				if err != nil {
					if i > 0 && err == io.EOF {
						err = io.ErrUnexpectedEOF
					}
					return "", fmt.Errorf("failed to read string length byte: %w", err)
				}
				if s == 28 && b > 0x0f {
					return "", errors.New("string length overflows a 32-bit integer")
				}
				if b < 0x80 {
					x = x | uint32(b)<<s
					buf := make([]byte, x)
					slog.Debug("reading string bytes", "len", x)
					_, err = r.Read(buf)
					if err != nil {
						return "", fmt.Errorf("failed to read string bytes: %w", err)
					}
					if !utf8.Valid(buf) {
						return string(buf), errors.New("string is not valid UTF-8")
					}
					return string(buf), nil
				}
				x |= uint32(b&0x7f) << s
				s += 7
			}
			return "", errors.New("string length overflows a 32-bit integer")
		}(r__)
		if err__ != nil {
			return fmt.Errorf("failed to read result 0: %w", err__)
		}
		return nil
	}); err__ != nil {
		err__ = fmt.Errorf("failed to invoke `hello`: %w", err__)
		return
	}
	return
}