# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========

from mirage.io.types import IOResult


def decode(value: bytes | None) -> str:
    if value is None:
        return ""
    return value.decode("utf-8", errors="replace")


def io_to_str(io: IOResult) -> str:
    stdout = decode(io.stdout if isinstance(io.stdout, bytes) else None)
    stderr = decode(io.stderr if isinstance(io.stderr, bytes) else None)
    if stderr:
        return f"{stdout}\n{stderr}" if stdout else stderr
    return stdout