"""Validation helpers for DDEX generation across supported versions."""

from soundrecording_utils.constants.ddex.constants import RuleService
from soundrecording_utils.ddex.utils.control_chars import remove_control_chars
from soundrecording_utils.ddex.v38.track import generate_track_display_artists as generate_track_display_artists_38
from soundrecording_utils.ddex.v43.track import generate_track_display_artists as generate_track_display_artists_43
from soundrecording_utils.metadata.types import Track


def base_validation(
    primary_track_metadata: Track,
    rule_service: RuleService,
    selected_version: str = '3.8'
):
    """Perform base validation for DDEX generation across versions and services.

    Args:
        primary_track_metadata (Track): Primary track metadata.
        rule_service: The RuleService (TIKTOK, YOUTUBE, etc.).
        selected_version (str): DDEX version to generate (e.g., '3.8' or '4.3')

    Raises:
        ValueError: If any required metadata is missing or invalid.
    """
    if rule_service == RuleService.TIKTOK:
        primary_track_name = remove_control_chars(primary_track_metadata.name)
        if (primary_track_name is None) or (primary_track_name == ''):
            raise ValueError('The primary track name cannot be an empty string or missing.')

        display_artists_generator = generate_track_display_artists_38 \
            if selected_version == '3.8' else generate_track_display_artists_43
        artists = display_artists_generator(primary_track_metadata)
        if len(artists) == 0:
            raise ValueError('The artists are missing.')