from __future__ import annotations

import json
from pathlib import Path

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

from scouting.importers.hoopdata_demo import (
    HoopDataDemoCompetitionImporter,
    ImportValidationError,
)


class Command(BaseCommand):
    help = "Import the first real-data MVP snapshot for the hoopdata_demo source (single competition scope)."

    def add_arguments(self, parser):
        parser.add_argument(
            "--input",
            default=str(
                Path(settings.BASE_DIR)
                / "scouting"
                / "sample_data"
                / "imports"
                / "hoopdata_demo_serie_a2_2025_2026.json"
            ),
            help="Path to a hoopdata_demo competition snapshot JSON file.",
        )

    def handle(self, *args, **options):
        input_path = Path(options["input"])
        if not input_path.exists():
            raise CommandError(f"Input file does not exist: {input_path}")

        try:
            payload = json.loads(input_path.read_text(encoding="utf-8"))
            summary = HoopDataDemoCompetitionImporter(payload).run()
        except json.JSONDecodeError as exc:
            raise CommandError(f"Invalid JSON payload: {exc}") from exc
        except ImportValidationError as exc:
            raise CommandError(f"Import validation failed: {exc}") from exc

        self.stdout.write(
            self.style.SUCCESS(
                "Imported hoopdata_demo competition snapshot successfully. "
                f"Players +{summary.players_created}/~{summary.players_updated}, "
                f"Teams +{summary.teams_created}/~{summary.teams_updated}, "
                f"Contexts +{summary.contexts_created}/~{summary.contexts_updated}."
            )
        )
        self.stdout.write(f"Source file: {input_path}")