import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:marco/helpers/services/tenant_service.dart';
import 'package:marco/helpers/services/app_logger.dart';

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

  @override
  State<TenantCreateScreen> createState() => _TenantCreateScreenState();
}

class _TenantCreateScreenState extends State<TenantCreateScreen> {
  final _formKey = GlobalKey<FormState>();
  final _firstNameCtrl = TextEditingController();
  final _lastNameCtrl = TextEditingController();
  final _orgNameCtrl = TextEditingController();
  final _emailCtrl = TextEditingController();
  final _contactCtrl = TextEditingController();
  final _billingCtrl = TextEditingController();
  final _orgSizeCtrl = TextEditingController();
  final _referenceCtrl = TextEditingController();

  final TenantService _tenantService = TenantService();
  bool _loading = false;

  List<Map<String, dynamic>> _industries = [];
  String? _selectedIndustryId;
  bool _loadingIndustries = true;

  late final String planId;
  late final double amount;
  late final String planName;

  @override
  void initState() {
    super.initState();
    final args = (Get.arguments ?? {}) as Map<String, dynamic>;
    planId = args['planId'] ?? '';
    amount = (args['amount'] ?? 0).toDouble();
    planName = args['planName'] ?? 'Subscription';
    _fetchIndustries();
  }

  Future<void> _fetchIndustries() async {
    try {
      setState(() => _loadingIndustries = true);
      final list = await _tenantService.getIndustries();
      setState(() {
        _industries = (list ?? []).whereType<Map<String, dynamic>>().toList();
        _loadingIndustries = false;
      });
    } catch (e, s) {
      logSafe("❌ Failed to fetch industries: $e\n$s", level: LogLevel.error);
      setState(() => _loadingIndustries = false);
    }
  }

  @override
  void dispose() {
    _firstNameCtrl.dispose();
    _lastNameCtrl.dispose();
    _orgNameCtrl.dispose();
    _emailCtrl.dispose();
    _contactCtrl.dispose();
    _billingCtrl.dispose();
    _orgSizeCtrl.dispose();
    _referenceCtrl.dispose();
    super.dispose();
  }

  Future<void> _submit() async {
    if (!_formKey.currentState!.validate()) return;
    if (_selectedIndustryId == null || _selectedIndustryId!.isEmpty) {
      Get.snackbar("Error", "Please select industry",
          backgroundColor: Colors.red, colorText: Colors.white);
      return;
    }

    final payload = {
      "firstName": _firstNameCtrl.text.trim(),
      "lastName": _lastNameCtrl.text.trim(),
      "organizationName": _orgNameCtrl.text.trim(),
      "email": _emailCtrl.text.trim(),
      "contactNumber": _contactCtrl.text.trim(),
      "billingAddress": _billingCtrl.text.trim(),
      "organizationSize": _orgSizeCtrl.text.trim(),
      "industryId": _selectedIndustryId,
      "reference": _referenceCtrl.text.trim(),
    };

    setState(() => _loading = true);
    final resp = await _tenantService.createTenant(payload);
    if (!mounted) return;
    setState(() => _loading = false);

    if (resp == null || resp['success'] == false) {
      Get.snackbar("Error",
          resp?['message'] ?? "Failed to create tenant. Try again later.",
          backgroundColor: Colors.red, colorText: Colors.white);
      return;
    }

    final data = Map<String, dynamic>.from(resp['data'] ?? resp);
    final tenantEnquireId =
        data['tenantEnquireId'] ?? data['id'] ?? data['tenantId'];

    if (tenantEnquireId == null) {
      logSafe("❌ Missing tenant ID in response: $resp");
      return;
    }

    Get.toNamed('/payment', arguments: {
      'amount': amount,
      'description': 'Subscription for ${_orgNameCtrl.text}',
      'tenantEnquireId': tenantEnquireId,
      'planId': planId,
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: true, // ensures scroll works with keyboard
      appBar: AppBar(
        title: const Text(
          "Create Tenant",
          style: TextStyle(fontWeight: FontWeight.bold, color: Colors.black),
        ),
        centerTitle: true,
        elevation: 0,
      ),
      body: SafeArea(
        child: LayoutBuilder(
          builder: (context, constraints) {
            return SingleChildScrollView(
              physics: const BouncingScrollPhysics(),
              padding: const EdgeInsets.all(20),
              child: ConstrainedBox(
                constraints: BoxConstraints(minHeight: constraints.maxHeight),
                child: IntrinsicHeight(
                  child: Form(
                    key: _formKey,
                    child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          const Text("Personal Info",
                              style: TextStyle(
                                  fontSize: 18, fontWeight: FontWeight.w600)),
                          const Divider(height: 20),
                          _buildTextField(
                              _firstNameCtrl, "First Name *", Icons.person,
                              validator: (v) => v!.isEmpty ? "Required" : null),
                          _buildTextField(_lastNameCtrl, "Last Name *",
                              Icons.person_outline,
                              validator: (v) => v!.isEmpty ? "Required" : null),
                          const SizedBox(height: 12),
                          const Text("Organization",
                              style: TextStyle(
                                  fontSize: 18, fontWeight: FontWeight.w600)),
                          const Divider(height: 20),
                          _buildTextField(_orgNameCtrl, "Organization Name *",
                              Icons.business,
                              validator: (v) => v!.isEmpty ? "Required" : null),
                          const SizedBox(height: 8),
                          _loadingIndustries
                              ? const Center(
                                  child: Padding(
                                  padding: EdgeInsets.all(16.0),
                                  child: CircularProgressIndicator(),
                                ))
                              : Container(
                                  decoration: BoxDecoration(
                                    borderRadius: BorderRadius.circular(10),
                                    border:
                                        Border.all(color: Colors.grey.shade400),
                                  ),
                                  padding: const EdgeInsets.symmetric(
                                      horizontal: 12, vertical: 2),
                                  child: DropdownButtonFormField<String>(
                                    isExpanded: true,
                                    borderRadius: BorderRadius.circular(10),
                                    dropdownColor: Colors.white,
                                    icon: const Icon(
                                        Icons.keyboard_arrow_down_rounded),
                                    value: _selectedIndustryId,
                                    decoration: const InputDecoration(
                                      prefixIcon:
                                          Icon(Icons.apartment_outlined),
                                      labelText: "Industry *",
                                      border: InputBorder.none,
                                    ),
                                    items: _industries.map((itm) {
                                      final id = itm['id']?.toString() ?? '';
                                      final name = itm['name'] ??
                                          itm['displayName'] ??
                                          'Unknown';
                                      return DropdownMenuItem(
                                          value: id, child: Text(name));
                                    }).toList(),
                                    onChanged: (v) =>
                                        setState(() => _selectedIndustryId = v),
                                    validator: (v) => v == null || v.isEmpty
                                        ? "Select industry"
                                        : null,
                                  ),
                                ),
                          const SizedBox(height: 16),
                          const Text("Contact Details",
                              style: TextStyle(
                                  fontSize: 18, fontWeight: FontWeight.w600)),
                          const Divider(height: 20),
                          _buildTextField(
                              _emailCtrl, "Email *", Icons.email_outlined,
                              validator: (v) => v == null || !v.contains('@')
                                  ? "Invalid email"
                                  : null),
                          _buildTextField(
                              _contactCtrl, "Contact Number", Icons.phone),
                          const SizedBox(height: 16),
                          const Text("Additional Info",
                              style: TextStyle(
                                  fontSize: 18, fontWeight: FontWeight.w600)),
                          const Divider(height: 20),
                          _buildTextField(_billingCtrl, "Billing Address",
                              Icons.home_outlined),
                          _buildTextField(_orgSizeCtrl, "Organization Size",
                              Icons.people_alt_outlined),
                          _buildTextField(_referenceCtrl, "Reference",
                              Icons.note_alt_outlined),
                          const Spacer(),
                          const SizedBox(height: 24),
                          Center(
                            child: SizedBox(
                              width: double.infinity,
                              child: ElevatedButton(
                                onPressed: _loading ? null : _submit,
                                style: ElevatedButton.styleFrom(
                                  padding:
                                      const EdgeInsets.symmetric(vertical: 14),
                                  shape: RoundedRectangleBorder(
                                      borderRadius: BorderRadius.circular(10)),
                                  backgroundColor: Colors.deepPurple,
                                ),
                                child: _loading
                                    ? const CircularProgressIndicator(
                                        color: Colors.white)
                                    : const Text("Create Tenant & Continue",
                                        style: TextStyle(fontSize: 16)),
                              ),
                            ),
                          ),
                        ]),
                  ),
                ),
              ),
            );
          },
        ),
      ),
    );
  }

  Widget _buildTextField(
      TextEditingController controller, String label, IconData icon,
      {String? Function(String?)? validator}) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 12),
      child: TextFormField(
        controller: controller,
        validator: validator,
        decoration: InputDecoration(
          prefixIcon: Icon(icon),
          labelText: label,
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10),
          ),
        ),
      ),
    );
  }
}