import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:http/http.dart' as http;

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

  @override
  State<TambahDusunPage> createState() => _TambahDusunPageState();
}

class _TambahDusunPageState extends State<TambahDusunPage> {
  final _namaDusun = TextEditingController();
  bool _loading = false;

  List desaList = [];
  String? selectedDesaId;

  final String url = "http://ta.myhost.id/E31230549/mposyandu_api/dusun/tambah_dusun.php";
  final String urlDesa = "http://ta.myhost.id/E31230549/mposyandu_api/desa/get_desa.php";

  @override
  void initState() {
    super.initState();
    _fetchDesa();
  }

  Future<void> _fetchDesa() async {
    try {
      final res = await http.get(Uri.parse(urlDesa));
      if (!mounted) return;
      final data = json.decode(res.body);
      if (data["success"] == true) {
        setState(() => desaList = data["data"]);
      }
    } catch (e) {
      debugPrint("DESA ERROR: $e");
    }
  }

  bool _isValid() {
    if (selectedDesaId == null) {
      _snack("Desa wajib dipilih");
      return false;
    }
    if (_namaDusun.text.isEmpty) {
      _snack("Nama dusun wajib diisi");
      return false;
    }
    return true;
  }

  Future<void> _simpan() async {
    if (!_isValid()) return;

    setState(() => _loading = true);

    try {
      final res = await http.post(
        Uri.parse(url),
        headers: {"Content-Type": "application/x-www-form-urlencoded"},
        body: {
          "desa_id": selectedDesaId!,
          "nama_dusun": _namaDusun.text,
        },
      );

      if (!mounted) return; // Penting untuk menghilangkan garis kuning

      final data = json.decode(res.body);

      if (data["success"] == true) {
        _snack("Berhasil tambah dusun");
        Navigator.pop(context, true);
      } else {
        _snack(data["message"] ?? "Gagal");
      }
    } catch (e) {
      if (mounted) _snack("Error koneksi");
    } finally {
      if (mounted) setState(() => _loading = false);
    }
  }

  // PERBAIKAN: Menambahkan pengecekan mounted agar tidak bergaris kuning
  void _snack(String msg) {
    if (!mounted) return;
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Text(
          msg,
          style: GoogleFonts.poppins(fontSize: 12),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: const Color(0xfff5f6fa),
      appBar: AppBar(
        leading: const BackButton(color: Colors.white),
        title: Text(
          "",
          style: GoogleFonts.poppins(color: Colors.white, fontSize: 14),
        ),
        backgroundColor: Colors.blue,
      ),
      body: Center(
        child: SingleChildScrollView(
          child: Container(
            width: 500,
            margin: const EdgeInsets.all(16),
            padding: const EdgeInsets.all(24),
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.circular(16),
              boxShadow: const [
                BoxShadow(color: Colors.black12, blurRadius: 12)
              ],
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                _label("Pilih Desa"),
                _dropdownDesa(),
                const SizedBox(height: 16),
                _label("Nama Dusun"),
                _input(_namaDusun),
                const SizedBox(height: 24),
                SizedBox(
                  width: double.infinity,
                  child: OutlinedButton(
                    onPressed: _loading ? null : _simpan,
                    style: OutlinedButton.styleFrom(
                      backgroundColor: Colors.white,
                      side: const BorderSide(color: Colors.blue, width: 1.5),
                      padding: const EdgeInsets.symmetric(vertical: 14),
                      shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(10)),
                    ),
                    child: _loading
                        ? const SizedBox(
                            width: 20,
                            height: 20,
                            child: CircularProgressIndicator(
                                strokeWidth: 2, color: Colors.blue),
                          )
                        : Text(
                            "Simpan",
                            style: GoogleFonts.poppins(
                              color: Colors.blue,
                              fontWeight: FontWeight.bold,
                              fontSize: 12,
                            ),
                          ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  Widget _label(String text) => Padding(
        padding: const EdgeInsets.only(bottom: 6),
        child: Text(
          text,
          style: GoogleFonts.poppins(fontWeight: FontWeight.w600, fontSize: 12),
        ),
      );

  Widget _input(TextEditingController c) => TextField(
        controller: c,
        style: GoogleFonts.poppins(fontSize: 12),
        decoration: InputDecoration(
          hintText: "Masukkan nama dusun...",
          hintStyle: GoogleFonts.poppins(fontSize: 12, color: Colors.grey),
          contentPadding:
              const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
          border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
        ),
      );

  Widget _dropdownDesa() => DropdownButtonFormField<String>(
        value: selectedDesaId,
        style: GoogleFonts.poppins(fontSize: 12, color: Colors.black),
        items: desaList.map<DropdownMenuItem<String>>((e) {
          return DropdownMenuItem<String>(
            value: e["id"].toString(),
            child: Text(
              e["nama_desa"] ?? "",
              style: GoogleFonts.poppins(fontSize: 12),
            ),
          );
        }).toList(),
        onChanged: (v) => setState(() => selectedDesaId = v),
        decoration: InputDecoration(
          hintText: "Pilih desa",
          hintStyle: GoogleFonts.poppins(fontSize: 12),
          contentPadding:
              const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
          border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
        ),
      );
}