import 'package:flutter/material.dart';
import 'package:get/get.dart';
import '../controllers/invoice_detail_controller.dart';

class InvoiceDetailView extends StatelessWidget {
  const InvoiceDetailView({super.key});

  @override
  Widget build(BuildContext context) {
    final controller = Get.put(InvoiceDetailController());
    final isDark = Theme.of(context).brightness == Brightness.dark;

    return Scaffold(
      backgroundColor: isDark ? const Color(0xFF121212) : const Color(0xFFF5F7FA),
      appBar: AppBar(
        title: const Text('تفاصيل الفاتورة', style: TextStyle(fontWeight: FontWeight.bold)),
        backgroundColor: isDark ? const Color(0xFF1E1E2E) : const Color(0xFF0F4C81),
        foregroundColor: Colors.white,
        elevation: 0,
      ),
      body: Obx(() {
        if (controller.isLoading.value) {
          return const Center(child: CircularProgressIndicator(color: Color(0xFF0F4C81)));
        }

        if (controller.invoice.isEmpty) {
          return const Center(child: Text('لم يتم العثور على الفاتورة'));
        }

        final inv = controller.invoice;
        final status = inv['status'] ?? 'pending';

        return SingleChildScrollView(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              // Header Card
              Container(
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: isDark ? const Color(0xFF1E1E2E) : Colors.white,
                  borderRadius: BorderRadius.circular(16),
                  border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
                ),
                child: Column(
                  children: [
                    Text(
                      inv['supplier_name'] ?? inv['company_name'] ?? 'بدون اسم',
                      style: TextStyle(
                        fontSize: 20,
                        fontWeight: FontWeight.bold,
                        color: isDark ? Colors.white : const Color(0xFF0F172A),
                      ),
                      textAlign: TextAlign.center,
                    ),
                    const SizedBox(height: 8),
                    Text(
                      'فاتورة ضريبية',
                      style: TextStyle(color: isDark ? Colors.white70 : Colors.grey.shade600),
                    ),
                    const SizedBox(height: 16),
                    Text(
                      '${double.tryParse(inv['grand_total']?.toString() ?? '0')?.toStringAsFixed(2) ?? '0.00'} JOD',
                      style: TextStyle(
                        fontSize: 32,
                        fontWeight: FontWeight.w900,
                        color: isDark ? const Color(0xFF5EEAD4) : const Color(0xFF0F4C81),
                        fontFamily: 'monospace',
                      ),
                    ),
                    const SizedBox(height: 16),
                    _buildStatusChip(status),
                  ],
                ),
              ),

              const SizedBox(height: 16),

              // Details Card
              Container(
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: isDark ? const Color(0xFF1E1E2E) : Colors.white,
                  borderRadius: BorderRadius.circular(16),
                  border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    const Text('المعلومات الأساسية', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
                    const SizedBox(height: 16),
                    _buildInfoRow('رقم الفاتورة', inv['invoice_number'] ?? '—', isDark),
                    const Divider(height: 24),
                    _buildInfoRow('تاريخ الإصدار', inv['invoice_date'] ?? '—', isDark),
                    const Divider(height: 24),
                    _buildInfoRow('الرقم الضريبي', inv['tax_number'] ?? '—', isDark),
                  ],
                ),
              ),

              const SizedBox(height: 16),

              // Amounts Card
              Container(
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: isDark ? const Color(0xFF1E1E2E) : Colors.white,
                  borderRadius: BorderRadius.circular(16),
                  border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    const Text('تفاصيل المبلغ', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
                    const SizedBox(height: 16),
                    _buildInfoRow('المبلغ الخاضع للضريبة', '${inv['subtotal'] ?? '0.00'} JOD', isDark),
                    const Divider(height: 24),
                    _buildInfoRow('قيمة الضريبة', '${inv['tax_amount'] ?? '0.00'} JOD', isDark),
                    const Divider(height: 24),
                    _buildInfoRow('الإجمالي', '${inv['grand_total'] ?? '0.00'} JOD', isDark, isBold: true),
                  ],
                ),
              ),

              const SizedBox(height: 32),

              // Action Buttons
              if (status == 'extracted') ...[
                SizedBox(
                  height: 52,
                  child: ElevatedButton.icon(
                    onPressed: () => controller.approveInvoice(),
                    style: ElevatedButton.styleFrom(
                      backgroundColor: const Color(0xFF10B981),
                      foregroundColor: Colors.white,
                      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
                    ),
                    icon: const Icon(Icons.check_circle_outline),
                    label: const Text('اعتماد الفاتورة نهائياً', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
                  ),
                ),
                const SizedBox(height: 12),
              ],

              SizedBox(
                height: 52,
                child: OutlinedButton.icon(
                  onPressed: () => controller.viewOriginalImage(),
                  style: OutlinedButton.styleFrom(
                    foregroundColor: const Color(0xFF0F4C81),
                    side: const BorderSide(color: Color(0xFF0F4C81)),
                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
                  ),
                  icon: const Icon(Icons.image_outlined),
                  label: const Text('عرض صورة الفاتورة الأصلية', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
                ),
              ),
              const SizedBox(height: 40),
            ],
          ),
        );
      }),
    );
  }

  Widget _buildStatusChip(String status) {
    Color color;
    String text;

    switch (status) {
      case 'approved': color = const Color(0xFF10B981); text = '✓ معتمدة'; break;
      case 'extracted': color = const Color(0xFF3B82F6); text = 'جاهزة للتدقيق'; break;
      default: color = const Color(0xFFF59E0B); text = 'قيد المعالجة';
    }

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      decoration: BoxDecoration(
        color: color.withOpacity(0.1),
        borderRadius: BorderRadius.circular(20),
        border: Border.all(color: color.withOpacity(0.2)),
      ),
      child: Text(text, style: TextStyle(color: color, fontWeight: FontWeight.bold, fontSize: 13)),
    );
  }

  Widget _buildInfoRow(String label, String value, bool isDark, {bool isBold = false}) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceBetween,
      children: [
        Text(label, style: TextStyle(fontSize: 14, color: isDark ? Colors.white70 : Colors.grey.shade600)),
        Text(
          value,
          style: TextStyle(
            fontWeight: isBold ? FontWeight.w900 : FontWeight.w600,
            fontSize: isBold ? 18 : 15,
            color: isDark ? Colors.white : Colors.black87,
            fontFamily: value.contains(RegExp(r'[0-9]')) ? 'monospace' : null,
          ),
        ),
      ],
    );
  }
}