"""Generate Meta ERN DDEX."""

from typing import cast
from typing import Optional

from lxml import etree

from .deal import generate_release_deal
from .e import E
from .header import generate_header
from .release import generate_release
from .sound_recording import generate_sound_recording_resource

from soundrecording_utils.metadata.types import Asset
from soundrecording_utils.metadata.types import OrchardSoundRecording


def generate_ern_srr(
    sound_recording_metadata: OrchardSoundRecording,
    upload_asset: Optional[Asset],
    execution_meta
) -> str:
    """Generate DDEX ERN SRR for Meta."""
    # TODO replace root attribs here with the correct one for ern srr
    root_attribs = {
        etree.QName(
            'http://www.w3.org/2001/XMLSchema-instance',
            'schemaLocation'
        ): ' '.join([
            'http://ddex.net/xml/ern/382',
            'http://ddex.net/xml/ern/382/release-notification.xsd',
        ]),
        'MessageSchemaVersionId': 'ern/382',
        'ReleaseProfileVersionId':
            'CommonReleaseTypes/14/SingleResourceRelease',
        'LanguageAndScriptCode': 'en',
    }

    sound_recording_release = generate_sound_recording_resource(
        'A1',
        sound_recording_metadata,
        upload_asset
    )

    release = generate_release(
        'R1',
        'A1',
        sound_recording_metadata,
    )

    deal = generate_release_deal(
        'R1',
        sound_recording_metadata,
    )

    root = E(
        '{http://ddex.net/xml/ern/382}NewReleaseMessage',
        root_attribs,
        generate_header(execution_meta),
        E(
            'ResourceList',
            sound_recording_release,
        ),
        E(
            'ReleaseList',
            release,
        ),
        E(
            'DealList',
            deal,
        ),
    )

    etree.indent(root, space='    ')
    document_buffer = etree.tostring(
        root,
        encoding='utf-8',
        doctype='<?xml version="1.0" encoding="utf-8"?>',
        pretty_print=True,
    )

    return cast(bytes, document_buffer).decode('utf-8')