emus/games/management/commands/export_gamelist_xml_file.py

import xml.etree.ElementTree as ET

from django.core.management.base import BaseCommand, CommandError

from dateutil import parser
from games.models import Developer, Game, GameSystem, Genre, Publisher


def export_gamelist_file_to_path_for_system(file_path, game_system):
    exported_games = []
    root = ET.Element("gameList")

    tree = ET.ElementTree(root)
    tree.write("filename.xml")
    games = Game.objects.filter(game_system=game_system)
    for game in games:
        game_node = ET.SubElement(root, "game")

        genre_str = ", ".join(game.genre.all().values_list("name", flat=True))
        release_date_str = ""
        if game.release_date:
            release_date_str = game.release_date.strftime("%Y%m%dT00000")
        ET.SubElement(game_node, "path").text = (
            game.rom_file.path if game.rom_file else ""
        )
        ET.SubElement(game_node, "name").text = game.name
        ET.SubElement(game_node, "thumbnail").text = ""
        ET.SubElement(game_node, "image").text = (
            game.screenshot.path if game.screenshot else ""
        )
        ET.SubElement(game_node, "marquee").text = (
            game.marquee.path if game.marquee else ""
        )
        ET.SubElement(game_node, "video").text = game.video.path if game.video else ""
        ET.SubElement(game_node, "rating").text = str(game.rating)
        ET.SubElement(game_node, "desc").text = game.description
        ET.SubElement(game_node, "releasedate").text = release_date_str
        ET.SubElement(game_node, "developer").text = str(game.developer)
        ET.SubElement(game_node, "publisher").text = str(game.publisher)
        ET.SubElement(game_node, "genre").text = genre_str
        ET.SubElement(game_node, "players").text = str(game.players)
        if game.kid_game:
            ET.SubElement(game_node, "kidgame").text = "true"

        exported_games.append(game)
    tree = ET.ElementTree(root)
    tree.write(file_path, xml_declaration=True, encoding="utf-8")

    return exported_games


class Command(BaseCommand):
    help = "Export all games found to a given gamelist XML file"

    def add_arguments(self, parser):
        parser.add_argument("file_path", nargs="+", type=str)
        parser.add_argument("system", nargs="+", type=str)

    def handle(self, *args, **options):
        game_system = GameSystem.objects.get(retropie_slug=options["system"][0])
        games = export_gamelist_file_to_path_for_system(
            options["file_path"][0],
            game_system,
        )
        self.stdout.write(self.style.SUCCESS(f"Successfully exported {len(games)}"))