import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:http/http.dart' as http;
import 'package:image_picker/image_picker.dart';
import 'package:sefer_admin1/constant/colors.dart';
import 'package:sefer_admin1/constant/links.dart';
import 'package:sefer_admin1/views/widgets/my_scafold.dart';
import 'package:sefer_admin1/views/widgets/my_textField.dart';

import '../../constant/box_name.dart';
import '../../constant/info.dart';
import '../../controller/functions/encrypt_decrypt.dart';
import '../../main.dart';

class AddInvoicePage extends StatefulWidget {
  const AddInvoicePage({super.key});

  @override
  State<AddInvoicePage> createState() => _AddInvoicePageState();
}

class _AddInvoicePageState extends State<AddInvoicePage> {
  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
  final TextEditingController _itemNameController = TextEditingController();
  final TextEditingController _amountController = TextEditingController();
  File? _imageFile;
  bool _isLoading = false;

  String generateInvoiceNumber() {
    final now = DateTime.now();
    return "INV-${now.year}${now.month.toString().padLeft(2, '0')}${now.day.toString().padLeft(2, '0')}-${now.microsecond}";
  }

  Future<void> uploadInvoice() async {
    if (!_formKey.currentState!.validate()) return;

    final driverID = '123'; // ← عدّله حسب نظامك
    final invoiceNumber = generateInvoiceNumber();
    final amount = _amountController.text.trim();
    final itemName = _itemNameController.text.trim();
    final date = DateTime.now().toIso8601String().split('T').first;

    setState(() => _isLoading = true);

    try {
      final headers = {
        'Authorization':
            'Bearer ${r(box.read(BoxName.jwt)).split(AppInformation.addd)[0]}',
        'X-HMAC-Auth': '${box.read(BoxName.hmac)}',
      };
      final uri = Uri.parse(AppLink.addInvoice);
      final request = http.MultipartRequest('POST', uri)
        ..fields['driverID'] = driverID
        ..fields['invoiceNumber'] = invoiceNumber
        ..fields['amount'] = amount
        ..fields['name'] = itemName
        ..fields['date'] = date
        ..headers.addAll(headers);

      if (_imageFile != null) {
        final imageName = _imageFile!.path.split('/').last;
        final imageStream = http.ByteStream(_imageFile!.openRead());
        final imageLength = await _imageFile!.length();

        request.files.add(http.MultipartFile(
          'image',
          imageStream,
          imageLength,
          filename: imageName,
        ));
      } else {}

      final response = await request.send();
      final respStr = await response.stream.bytesToString();

      final data = jsonDecode(respStr);

      if (data['status'] == 'success') {
        Get.snackbar('تم الحفظ', 'تم حفظ الفاتورة بنجاح',
            backgroundColor: Colors.green.shade100);

        _itemNameController.clear();
        _amountController.clear();
        setState(() => _imageFile = null);
        Get.back(); // العودة للصفحة السابقة
      } else {
        Get.snackbar('خطأ', data['message'],
            backgroundColor: Colors.red.shade100);
      }
    } catch (e, stacktrace) {
      Get.snackbar('فشل الإرسال', e.toString(),
          backgroundColor: Colors.red.shade100);
    } finally {
      setState(() => _isLoading = false);
    }
  }

  Future<void> pickInvoiceImage() async {
    final picker = ImagePicker();
    final picked = await picker.pickImage(source: ImageSource.gallery);
    if (picked != null) {
      setState(() => _imageFile = File(picked.path));
    }
  }

  @override
  void dispose() {
    _itemNameController.dispose();
    _amountController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MyScafolld(
      title: 'إضافة فاتورة جديدة',
      body: [
        Padding(
          padding: const EdgeInsets.all(16.0),
          child: Form(
            key: _formKey,
            child: ListView(
              children: [
                MyTextForm(
                  controller: _itemNameController,
                  label: 'اسم البضاعة',
                  hint: 'مثال: قطع غيار',
                  type: TextInputType.text,
                  // validator: (val) =>
                  //     val!.isEmpty ? 'الرجاء إدخال اسم البضاعة' : null,
                ),
                const SizedBox(height: 16),
                MyTextForm(
                  controller: _amountController,
                  label: 'قيمة الفاتورة',
                  hint: 'مثال: 150.75',
                  type: TextInputType.numberWithOptions(decimal: true),
                  // validator: (val) =>
                  //     val!.isEmpty ? 'الرجاء إدخال المبلغ' : null,
                ),
                const SizedBox(height: 20),
                Text('صورة الفاتورة (اختياري)',
                    style: Theme.of(context).textTheme.titleMedium),
                const SizedBox(height: 10),
                Container(
                  height: 180,
                  decoration: BoxDecoration(
                    color: Colors.grey.shade200,
                    border: Border.all(color: Colors.grey.shade400),
                    borderRadius: BorderRadius.circular(10),
                  ),
                  child: _imageFile != null
                      ? ClipRRect(
                          borderRadius: BorderRadius.circular(10),
                          child: Image.file(_imageFile!, fit: BoxFit.cover),
                        )
                      : const Center(child: Text('لم يتم اختيار صورة')),
                ),
                const SizedBox(height: 12),
                ElevatedButton.icon(
                  onPressed: pickInvoiceImage,
                  icon: const Icon(Icons.image),
                  label: const Text('اختيار صورة'),
                ),
                const SizedBox(height: 30),
                ElevatedButton(
                  onPressed: _isLoading ? null : uploadInvoice,
                  style: ElevatedButton.styleFrom(
                    padding: const EdgeInsets.symmetric(vertical: 16),
                    backgroundColor: AppColor.primaryColor,
                  ),
                  child: _isLoading
                      ? const CircularProgressIndicator(color: Colors.white)
                      : const Text(
                          'حفظ الفاتورة',
                          style: TextStyle(color: Colors.white),
                        ),
                ),
              ],
            ),
          ),
        ),
      ],
      isleading: true,
    );
  }
}