"""DDEX Header generation."""

from .e import E
from ..constants import ddex as constants


def generate_header(execution_meta):
    """Generate DDEX MessageHeader from execution meta."""
    return E(
        'MessageHeader',
        E('MessageThreadId', execution_meta['message_thread_id']),
        E('MessageId', execution_meta['message_id']),
        E(
            'MessageSender',
            E('PartyId', constants.ORCHARD_PARTY_ID, IsDPID='true'),
            E(
                'PartyName',
                E('FullName', constants.ORCHARD_PARTY_NAME),
            ),
            E('TradingName', constants.ORCHARD_TRADING_ID),
        ),
        E(
            'MessageRecipient',
            E('PartyId', constants.META_PARTY_ID, IsDPID='true'),
            E(
                'PartyName',
                E('FullName', constants.META_PARTY_NAME),
            ),
        ),
        E(
            'MessageCreatedDateTime',
            execution_meta['timestamp'].strftime('%Y-%m-%dT%H:%M:%SZ'),
        ),
    )