import 'package:flutter/material.dart';

import '../core/app_colors.dart';
import '../core/app_design_tokens.dart';

class EnterpriseStat {
  final String label;
  final String value;
  final IconData? icon;

  const EnterpriseStat({required this.label, required this.value, this.icon});
}

class EnterpriseHeader extends StatelessWidget {
  final String title;
  final String subtitle;
  final IconData icon;
  final Color color;
  final Color accent;
  final List<EnterpriseStat> stats;
  final Widget? trailing;
  final bool showIcon;

  const EnterpriseHeader({
    super.key,
    required this.title,
    required this.subtitle,
    required this.icon,
    required this.color,
    required this.accent,
    this.stats = const [],
    this.trailing,
    this.showIcon = true,
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: AppSpacing.panel,
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: AppRadius.xlBorder,
        border: Border.all(color: AppColors.border, width: 1.1),
        boxShadow: AppShadows.soft,
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              if (showIcon) ...[
                Container(
                  width: 46,
                  height: 46,
                  decoration: BoxDecoration(
                    gradient: LinearGradient(
                      begin: Alignment.topLeft,
                      end: Alignment.bottomRight,
                      colors: [color, accent],
                    ),
                    borderRadius: BorderRadius.circular(14),
                  ),
                  child: Icon(icon, color: Colors.white, size: 25),
                ),
                const SizedBox(width: 12),
              ],
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      title,
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                      style: AppTextStyles.summaryTitle,
                    ),
                    const SizedBox(height: 3),
                    Text(
                      subtitle,
                      maxLines: 2,
                      overflow: TextOverflow.ellipsis,
                      style: AppTextStyles.summarySubtitle,
                    ),
                  ],
                ),
              ),
              if (trailing != null) ...[const SizedBox(width: 10), trailing!],
            ],
          ),
          if (stats.isNotEmpty) ...[
            const SizedBox(height: 14),
            Row(
              children: [
                for (var i = 0; i < stats.length; i++) ...[
                  Expanded(
                    child: _HeaderStat(
                      stat: stats[i],
                      color: i.isEven ? color : accent,
                      accent: i.isEven ? accent : color,
                    ),
                  ),
                  if (i != stats.length - 1) const SizedBox(width: 8),
                ],
              ],
            ),
          ],
        ],
      ),
    );
  }
}

class _HeaderStat extends StatelessWidget {
  final EnterpriseStat stat;
  final Color color;
  final Color accent;

  const _HeaderStat({
    required this.stat,
    required this.color,
    required this.accent,
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      constraints: const BoxConstraints(minHeight: 66),
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 11),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [
            color.withValues(alpha: 0.10),
            accent.withValues(alpha: 0.06),
          ],
        ),
        borderRadius: AppRadius.smBorder,
        border: Border.all(color: AppColors.borderLight, width: 1.1),
      ),
      child: Row(
        children: [
          if (stat.icon != null) ...[
            Icon(stat.icon, color: color, size: 19),
            const SizedBox(width: 8),
          ],
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  stat.value,
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: const TextStyle(
                    color: AppColors.textPrimary,
                    fontSize: 17,
                    fontWeight: FontWeight.w900,
                  ),
                ),
                const SizedBox(height: 2),
                Text(
                  stat.label,
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: const TextStyle(
                    color: AppColors.textSecondary,
                    fontSize: 12,
                    fontWeight: FontWeight.w800,
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}