"""Unified export service - shared between CLI and HTTP API.

This module provides export functionality for listings in various formats.
"""
from dataclasses import dataclass
from pathlib import Path
from typing import Any

from models.listing import QueryParameters
from repositories.listing_repository import ListingRepository


@dataclass
class ExportResult:
    """Result of an export operation."""
    success: bool
    output_path: str | None  # For file exports
    data: Any | None  # For in-memory exports (GeoJSON)
    record_count: int
    message: str


async def export_to_csv(
    repository: ListingRepository,
    output_path: Path,
    query_parameters: QueryParameters | None = None,
) -> ExportResult:
    """Export listings to CSV file.

    Used by:
    - CLI: export-csv
    - API: (could be added as download endpoint)
    """
    from csv_exporter import export_to_csv as _export_csv

    await _export_csv(repository, output_path, query_parameters)

    listings = await repository.get_listings(query_parameters=query_parameters)
    return ExportResult(
        success=True,
        output_path=str(output_path),
        data=None,
        record_count=len(listings),
        message=f"Exported {len(listings)} listings to {output_path}",
    )


async def export_to_geojson(
    repository: ListingRepository,
    query_parameters: QueryParameters | None = None,
    output_path: Path | None = None,
    limit: int | None = None,
) -> ExportResult:
    """Export listings to GeoJSON format.

    Args:
        repository: Database repository
        query_parameters: Filtering parameters
        output_path: If provided, write to file. Otherwise return data.
        limit: Maximum number of listings to export

    Used by:
    - CLI: export-immoweb
    - API: GET /api/listing_geojson
    """
    from ui_exporter import export_immoweb

    geojson_data = await export_immoweb(
        repository,
        output_file=str(output_path) if output_path else None,
        query_parameters=query_parameters,
        limit=limit,
    )

    feature_count = len(geojson_data.get("features", [])) if geojson_data else 0

    if output_path:
        return ExportResult(
            success=True,
            output_path=str(output_path),
            data=None,
            record_count=feature_count,
            message=f"Exported {feature_count} listings to {output_path}",
        )

    return ExportResult(
        success=True,
        output_path=None,
        data=geojson_data,
        record_count=feature_count,
        message=f"Generated GeoJSON with {feature_count} features",
    )