# ========= 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.accessor.gsheets import GSheetsAccessor
from mirage.cache.index import IndexCacheStore
from mirage.core.gsheets.client import TokenManager, google_get, sheets_base
from mirage.core.gsheets.readdir import readdir
from mirage.core.gsheets.scope import detect_scope
from mirage.core.hierarchy.probe import resolve_entry
from mirage.core.hierarchy.read import make_read
from mirage.core.hierarchy.scope import ScopeMatch
from mirage.core.render.json import compact_json_bytes
from mirage.types import PathSpec
from mirage.utils.errors import enoent

GRID_DATA_PARAM = "true"


async def read_spreadsheet(token_manager: TokenManager,
                           spreadsheet_id: str) -> bytes:
    """Fetch full spreadsheet JSON, cell values included.

    `spreadsheets.get` returns no grid data unless asked, so without
    `includeGridData` the rendered `.gsheet.json` is tab metadata and
    nothing an agent can read a cell from.

    Args:
        token_manager (TokenManager): manages OAuth2 tokens.
        spreadsheet_id (str): Google Sheets spreadsheet ID.

    Returns:
        bytes: JSON response as bytes.
    """
    url = f"{sheets_base(token_manager)}/spreadsheets/{spreadsheet_id}"
    data = await google_get(token_manager, url,
                            {"includeGridData": GRID_DATA_PARAM})
    return compact_json_bytes(data)


async def read_values(token_manager: TokenManager, spreadsheet_id: str,
                      range_: str) -> bytes:
    """Read cell values via Values API. Returns JSON array.

    Args:
        token_manager (TokenManager): manages OAuth2 tokens.
        spreadsheet_id (str): Google Sheets spreadsheet ID.
        range_ (str): A1 notation range.

    Returns:
        bytes: JSON response as bytes.
    """
    base = sheets_base(token_manager)
    url = f"{base}/spreadsheets/{spreadsheet_id}/values/{range_}"
    data = await google_get(token_manager, url)
    return compact_json_bytes(data)


async def _read_file(accessor: GSheetsAccessor, match: ScopeMatch,
                     path: PathSpec, index: IndexCacheStore) -> bytes:
    entry = await resolve_entry(readdir, accessor, path, index)
    if entry is None:
        raise enoent(path.virtual)
    return await read_spreadsheet(accessor.token_manager, entry.id)


read = make_read(detect_scope, readers={"file": _read_file})
