"""
Copyright  2014-2020 Vincent Texier <vit@free.fr>

DuniterPy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

DuniterPy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

from typing import Union, Any
from duniterpy.grammars.output import SIG, CSV, CLTV, XHX, Condition


def output_available(
    condition: Condition, comparison: Any, value: Union[str, int]
) -> bool:
    """
    Check if output source is available
    Currently only handle unique condition without composition

    operator.lt(a, b) is equivalent to a < b
    operator.le(a, b) is equivalent to a <= b
    operator.gt(a, b) is equivalent to a > b
    operator.ge(a, b) is equivalent to a >= b
    """
    if isinstance(condition.left, SIG):
        return comparison(condition.left.pubkey, value)
    if isinstance(condition.left, CSV):
        return comparison(int(condition.left.time), value)
    if isinstance(condition.left, CLTV):
        return comparison(int(condition.left.timestamp), value)
    if isinstance(condition.left, XHX):
        return comparison(condition.left.sha_hash, value)

    return False
