"""
Data export functionality
"""

import json
import csv
from datetime import datetime


class DataExporter:
    def __init__(self, output_dir='exports'):
        self.output_dir = output_dir

    def export_to_json(self, data, filename=None):
        """Export data to JSON format"""
        if filename is None:
            filename = f"tracker_data_{datetime.now().strftime('%Y%m%d_%H%M%S')}.json"

        filepath = f"{self.output_dir}/{filename}"

        with open(filepath, 'w') as f:
            json.dump(data, f, indent=2)

        return filepath

    def export_to_csv(self, data, filename=None):
        """Export data to CSV format"""
        if filename is None:
            filename = f"tracker_data_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"

        filepath = f"{self.output_dir}/{filename}"

        if isinstance(data, list) and len(data) > 0:
            keys = data[0].keys()
            with open(filepath, 'w', newline='') as f:
                writer = csv.DictWriter(f, fieldnames=keys)
                writer.writeheader()
                writer.writerows(data)

        return filepath