import 'package:flutter/material.dart';

/// Display copy + color for maintenance `days_until_due` from the API.
class MaintenanceDueDisplay {
  const MaintenanceDueDisplay({
    required this.label,
    required this.color,
  });

  final String label;
  final Color color;

  /// Green/neutral upcoming, amber due today, red overdue.
  static MaintenanceDueDisplay? fromDaysUntilDue(int? daysUntilDue) {
    if (daysUntilDue == null) return null;

    if (daysUntilDue > 0) {
      return MaintenanceDueDisplay(
        label:
            'Due in $daysUntilDue day${daysUntilDue == 1 ? '' : 's'}',
        color: const Color(0xFF16A34A),
      );
    }

    if (daysUntilDue == 0) {
      return const MaintenanceDueDisplay(
        label: 'Due today',
        color: Color(0xFFD97706),
      );
    }

    final overdueBy = daysUntilDue.abs();
    return MaintenanceDueDisplay(
      label: 'Overdue by $overdueBy day${overdueBy == 1 ? '' : 's'}',
      color: const Color(0xFFDC2626),
    );
  }
}