import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:uuid/uuid.dart';

import '../models/kauf_filament_model.dart';
import '../services/get_storage_services.dart';

class HomeController extends GetxController {
  static const storageKey = 'kauf_filamente';

  final storage = Get.find<GetStorageService>();
  final uuid = const Uuid();

  final filamente = <KaufFilamentModel>[].obs;

  final formKey = GlobalKey<FormState>();

  final haendlerController = TextEditingController();
  final farbeController = TextEditingController();
  final preisController = TextEditingController();
  final markeController = TextEditingController();
  final gewichtController = TextEditingController();

  final kaufdatum = DateTime.now().obs;
  final material = 'PLA'.obs;
  final editingId = RxnString();

  final materialien = [
    'PLA',
    'PLA+',
    'PLA light',
    'PLA-CF',
    'PLA+',
    'PETG',
    'PETG-CF',
    'ABS',
    'ASA',
    'TPU',
    'Sonstiges',
  ];

  @override
  void onInit() {
    super.onInit();
    loadFilamente();
  }

  void loadFilamente() {
    final data = storage.getModelList(storageKey);

    filamente.assignAll(
      data.map(KaufFilamentModel.fromJson),
    );

    sortFilamente();
  }

  void sortFilamente() {
    filamente.sort(
      (a, b) => b.kaufdatum.compareTo(a.kaufdatum),
    );
  }

  Future<void> persist() async {
    await storage.saveModelList(
      storageKey,
      filamente.map((f) => f.toJson()).toList(),
    );
  }

  Future<void> saveFilament() async {
    if (!formKey.currentState!.validate()) return;

    final preis = double.tryParse(
      preisController.text.trim().replaceAll(',', '.'),
    );

    if (preis == null || !preis.isFinite || preis < 0) {
      Get.snackbar('Ungültiger Preis', 'Bitte Preis überprüfen.');
      return;
    }

    final filament = KaufFilamentModel(
      filamentId: editingId.value ?? uuid.v4(),
      marke: markeController.text.trim(),
      kaufdatum: kaufdatum.value,
      haendler: haendlerController.text.trim(),
      material: material.value,
      preis: preis,
      farbe: farbeController.text.trim(),
      gewicht: gewichtController.text.trim().isEmpty
          ? '1kg'
          : gewichtController.text.trim(),
    );

    if (editingId.value == null) {
      filamente.add(filament);
    } else {
      final index = filamente.indexWhere(
        (f) => f.filamentId == editingId.value,
      );

      if (index < 0) {
        Get.snackbar('Fehler', 'Datensatz nicht gefunden.');
        return;
      }

      filamente[index] = filament;
    }

    sortFilamente();
    await persist();
    resetForm();
  }

  void editFilament(KaufFilamentModel filament) {
    editingId.value = filament.filamentId;
    kaufdatum.value = filament.kaufdatum;
    markeController.text = filament.marke;
    haendlerController.text = filament.haendler;
    material.value = filament.material;
    preisController.text = filament.preis.toStringAsFixed(2);
    farbeController.text = filament.farbe;
    gewichtController.text = filament.gewicht;
  }

  Future<void> duplicateFilament(
    KaufFilamentModel filament,
  ) async {
    filamente.add(
      filament.copyWith(filamentId: uuid.v4()),
    );

    sortFilamente();
    await persist();
  }

  Future<void> deleteFilament(String filamentId) async {
    filamente.removeWhere((f) => f.filamentId == filamentId);
    if (editingId.value == filamentId) resetForm();
    await persist();
  }

  void resetForm() {
    editingId.value = null;
    haendlerController.clear();
    markeController.clear();
    farbeController.clear();
    preisController.clear();
    kaufdatum.value = DateTime.now();
    material.value = 'PLA';
    gewichtController.clear();
    formKey.currentState?.reset();
    
  }

  @override
  void onClose() {
    haendlerController.dispose();
    markeController.dispose();
    farbeController.dispose();
    preisController.dispose();
    gewichtController.dispose();
    super.onClose();
  }
}