import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:siro_admin/constant/theme.dart';
import 'package:siro_admin/controller/admin/food_merchants_controller.dart';

/// إدارة المطاعم — قائمة، تصفية بالحالة، واعتماد/رفض الطلبات المعلّقة.
/// تتبع لغة تصميم شاشة الرحلات: أسطح محايدة واللون للمعنى وحده.
class FoodMerchantsPage extends StatelessWidget {
  const FoodMerchantsPage({super.key});

  @override
  Widget build(BuildContext context) {
    final cs = Theme.of(context).colorScheme;

    return Scaffold(
      backgroundColor: cs.surface,
      body: GetBuilder<FoodMerchantsController>(
        init: Get.isRegistered<FoodMerchantsController>()
            ? Get.find<FoodMerchantsController>()
            : FoodMerchantsController(),
        builder: (ctrl) => Column(
          children: [
            _buildHeader(ctrl, cs),
            _buildFilterBar(ctrl, cs),
            Expanded(
              child: ctrl.isLoading
                  ? Center(child: CircularProgressIndicator(color: cs.primary))
                  : _buildList(ctrl, cs),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildHeader(FoodMerchantsController ctrl, ColorScheme cs) {
    return Container(
      padding: const EdgeInsets.fromLTRB(16, 50, 16, 16),
      decoration: BoxDecoration(
        color: cs.surface,
        border: Border(bottom: BorderSide(color: cs.outline)),
      ),
      child: Row(
        children: [
          GestureDetector(
            onTap: () => Get.back(),
            child: Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: cs.surfaceContainerHighest,
                borderRadius: BorderRadius.circular(10),
                border: Border.all(color: cs.outline),
              ),
              child: Icon(Icons.arrow_back_ios_new_rounded,
                  color: cs.onSurfaceVariant, size: 16),
            ),
          ),
          const SizedBox(width: 12),
          Text('إدارة المطاعم',
              style: TextStyle(
                  color: cs.onSurface,
                  fontSize: 18,
                  fontWeight: FontWeight.w700)),
          const Spacer(),
          Text('${ctrl.merchants.length}',
              style: TextStyle(color: cs.onSurfaceVariant, fontSize: 12)),
          IconButton(
            icon: Icon(Icons.refresh_rounded, color: cs.onSurfaceVariant),
            onPressed: () => ctrl.fetchMerchants(),
          ),
        ],
      ),
    );
  }

  Widget _buildFilterBar(FoodMerchantsController ctrl, ColorScheme cs) {
    return SizedBox(
      height: 52,
      child: ListView(
        scrollDirection: Axis.horizontal,
        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
        children: FoodMerchantsController.statuses.entries.map((e) {
          final selected = ctrl.filter == e.key;
          return Padding(
            padding: const EdgeInsets.only(left: 8),
            child: GestureDetector(
              onTap: () => ctrl.changeFilter(e.key),
              child: Container(
                padding:
                    const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
                decoration: BoxDecoration(
                  color: selected
                      ? cs.primary.withValues(alpha: 0.12)
                      : cs.surfaceContainerHighest,
                  borderRadius: BorderRadius.circular(10),
                  border:
                      Border.all(color: selected ? cs.primary : cs.outline),
                ),
                child: Text(e.value,
                    style: TextStyle(
                      color: selected ? cs.primary : cs.onSurfaceVariant,
                      fontSize: 12,
                      fontWeight: FontWeight.w700,
                    )),
              ),
            ),
          );
        }).toList(),
      ),
    );
  }

  Widget _buildList(FoodMerchantsController ctrl, ColorScheme cs) {
    if (ctrl.merchants.isEmpty) {
      return Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(Icons.storefront_outlined,
                color: cs.onSurfaceVariant, size: 40),
            const SizedBox(height: 10),
            Text('لا توجد مطاعم في هذه الحالة',
                style: TextStyle(color: cs.onSurfaceVariant, fontSize: 13)),
          ],
        ),
      );
    }

    return ListView.builder(
      padding: const EdgeInsets.fromLTRB(12, 4, 12, 24),
      itemCount: ctrl.merchants.length,
      itemBuilder: (_, i) => _buildCard(ctrl, ctrl.merchants[i], cs),
    );
  }

  Widget _buildCard(FoodMerchantsController ctrl, dynamic m, ColorScheme cs) {
    final status = '${m['status'] ?? ''}';
    final color = switch (status) {
      'active' => cs.success,
      'pending_approval' => cs.warning,
      'rejected' || 'suspended' => cs.danger,
      _ => cs.onSurfaceVariant,
    };
    final id = int.tryParse('${m['id']}') ?? 0;
    final busy = ctrl.busyId == id;
    final ratingCount = int.tryParse('${m['rating_count'] ?? 0}') ?? 0;

    return Container(
      margin: const EdgeInsets.only(bottom: 10),
      padding: const EdgeInsets.all(14),
      decoration: BoxDecoration(
        color: cs.surfaceContainerHighest,
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: cs.outline),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Container(
                padding: const EdgeInsets.all(8),
                decoration: BoxDecoration(
                  color: color.withValues(alpha: 0.12),
                  borderRadius: BorderRadius.circular(10),
                ),
                child: Icon(Icons.storefront_rounded, color: color, size: 18),
              ),
              const SizedBox(width: 10),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text('${m['name_ar'] ?? m['name_en'] ?? 'بلا اسم'}',
                        style: TextStyle(
                            color: cs.onSurface,
                            fontSize: 14,
                            fontWeight: FontWeight.w700)),
                    const SizedBox(height: 2),
                    Text(
                      '${m['city'] ?? ''}${m['category'] != null ? ' · ${m['category']}' : ''}',
                      style: TextStyle(
                          color: cs.onSurfaceVariant, fontSize: 11),
                    ),
                  ],
                ),
              ),
              Container(
                padding:
                    const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
                decoration: BoxDecoration(
                  color: color.withValues(alpha: 0.12),
                  borderRadius: BorderRadius.circular(8),
                  border: Border.all(color: color.withValues(alpha: 0.3)),
                ),
                child: Text(
                    FoodMerchantsController.statuses[status] ?? status,
                    style: TextStyle(
                        color: color,
                        fontSize: 11,
                        fontWeight: FontWeight.w700)),
              ),
            ],
          ),
          const SizedBox(height: 10),
          Row(
            children: [
              Icon(Icons.percent_rounded,
                  size: 13, color: cs.onSurfaceVariant),
              const SizedBox(width: 4),
              Text('عمولة ${m['commission_percent'] ?? 0}%',
                  style:
                      TextStyle(color: cs.onSurfaceVariant, fontSize: 11)),
              const SizedBox(width: 14),
              Icon(Icons.star_rounded, size: 13, color: cs.warning),
              const SizedBox(width: 4),
              // بلا تقييمات نعرض شرطة بدل 0.0 حتى لا يُقرأ كتقييم سيئ
              Text(
                ratingCount == 0
                    ? 'لا تقييمات'
                    : '${m['rating_avg'] ?? 0} ($ratingCount)',
                style: TextStyle(color: cs.onSurfaceVariant, fontSize: 11),
              ),
            ],
          ),
          if (status == 'pending_approval') ...[
            const SizedBox(height: 12),
            Row(
              children: [
                _action(ctrl, id, 'approve', 'اعتماد', cs.success, busy),
                const SizedBox(width: 8),
                _action(ctrl, id, 'reject', 'رفض', cs.danger, busy),
              ],
            ),
          ],
        ],
      ),
    );
  }

  Widget _action(FoodMerchantsController ctrl, int id, String action,
      String label, Color color, bool busy) {
    return Expanded(
      child: GestureDetector(
        onTap: busy ? null : () => ctrl.decide(id, action),
        child: Container(
          padding: const EdgeInsets.symmetric(vertical: 9),
          alignment: Alignment.center,
          decoration: BoxDecoration(
            color: color.withValues(alpha: busy ? 0.05 : 0.12),
            borderRadius: BorderRadius.circular(10),
            border: Border.all(
                color: color.withValues(alpha: busy ? 0.15 : 0.35)),
          ),
          child: busy
              ? SizedBox(
                  width: 14,
                  height: 14,
                  child:
                      CircularProgressIndicator(strokeWidth: 2, color: color),
                )
              : Text(label,
                  style: TextStyle(
                      color: color,
                      fontSize: 12,
                      fontWeight: FontWeight.w700)),
        ),
      ),
    );
  }
}