// * Widget for recording wildlife track findings during excursions
// * Features:
// * - Track presence recording
// * - Track length measurement
// * - Animal count estimation
// * - Confidence level indication
// * - Separate tracking for cubs/pups
// * - Nested visibility based on selections

import 'package:flutter/material.dart';
import 'package:fforte/l10n/app_localizations.dart';

/// Widget for managing wildlife track findings and measurements
/// Includes options for both adult and cub/pup tracks
class SpurGefunden extends StatefulWidget {
  /// Controller for track presence status
  final TextEditingController spurFund;
  /// Controller for total track length
  final TextEditingController spurLang;
  /// Controller for estimated number of animals
  final TextEditingController spurTiere;
  /// Controller for track identification confidence
  final TextEditingController spSicher;
  /// Controller for cub/pup track length
  final TextEditingController welpenSp;
  /// Controller for estimated number of cubs/pups
  final TextEditingController welpenAnz;
  /// Controller for cub/pup track identification confidence
  final TextEditingController wpSicher;

  const SpurGefunden({
    super.key,
    required this.spurFund,
    required this.spurLang,
    required this.spurTiere,
    required this.spSicher,
    required this.welpenSp,
    required this.welpenAnz,
    required this.wpSicher,
  });

  @override
  State<SpurGefunden> createState() => _SpurGefundenState();
}

/// State class for the track findings widget
class _SpurGefundenState extends State<SpurGefunden> {
  /// Whether any tracks were found
  late bool _spurFundChecked;
  /// Whether adult track identification is confident
  bool _spSicher = false;
  /// Whether cub/pup track identification is confident
  bool _wpSicher = false;
  /// Whether cub/pup tracks were found
  late bool _welpenSpFundChecked;

  @override
  void initState() {
    // Initialize track finding states
    if (widget.spurFund.text == "") {
      _spurFundChecked = false;
      _welpenSpFundChecked = false;
    } else {
      _spurFundChecked = true;
      _welpenSpFundChecked = true;
      if (widget.wpSicher.text != "") {
        _wpSicher = true;
      }
      if (widget.spSicher.text != "") {
        _spSicher = true;
      }
    }
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        // Track presence checkbox
        Row(
          children: [
            Text(AppLocalizations.of(context)!.spurGefunden),
            Checkbox(
              value: _spurFundChecked,
              onChanged: (val) {
                setState(() {
                  _spurFundChecked = val ?? false;
                  widget.spurFund.text = val ?? false ? "Spur" : "";
                });
              },
            ),
          ],
        ),
        // Track details section (visible when tracks found)
        Visibility(
          visible: _spurFundChecked,
          child: Column(
            children: [
              // Total track length input
              Row(
                children: [
                  Expanded(
                    flex: 7,
                    child: Align(
                      alignment: Alignment.bottomLeft,
                      child: Text(
                        AppLocalizations.of(context)!.gesLaengeAllerDokSpuren,
                      ),
                    ),
                  ),
                  Expanded(
                    flex: 2,
                    child: TextField(
                      keyboardType: TextInputType.number,
                      controller: widget.spurLang,
                    ),
                  ),
                ],
              ),
              // Estimated animal count input
              Row(
                children: [
                  Expanded(
                    flex: 7,
                    child: Align(
                      alignment: Alignment.bottomLeft,
                      child: Text(
                        AppLocalizations.of(
                          context,
                        )!.maxAnzahlZusGefaehrdeterTiere,
                      ),
                    ),
                  ),
                  Expanded(
                    flex: 2,
                    child: TextField(
                      keyboardType: TextInputType.number,
                      controller: widget.spurTiere,
                    ),
                  ),
                ],
              ),
              // Track identification confidence
              Row(
                children: [
                  Text(AppLocalizations.of(context)!.sicher),
                  Checkbox(
                    value: _spSicher,
                    onChanged: (val) {
                      setState(() {
                        _spSicher = val ?? false;
                        widget.spSicher.text =
                            _spSicher ? "sicher" : "unsicher";
                      });
                    },
                  ),
                ],
              ),
              // Cub/pup track presence checkbox
              Row(
                children: [
                  Text(AppLocalizations.of(context)!.welpenSpurGefunden),
                  Checkbox(
                    value: _welpenSpFundChecked,
                    onChanged: (val) {
                      setState(() {
                        _welpenSpFundChecked = val ?? false;
                      });
                    },
                  ),
                ],
              ),
              // Cub/pup track details section
              Visibility(
                visible: _welpenSpFundChecked,
                child: Column(
                  children: [
                    // Cub/pup track length input
                    Row(
                      children: [
                        Expanded(
                          flex: 7,
                          child: Align(
                            alignment: Alignment.bottomLeft,
                            child: Text(
                              AppLocalizations.of(
                                context,
                              )!.gesLaengeAllerDokWelpenSpuren,
                            ),
                          ),
                        ),
                        Expanded(
                          flex: 2,
                          child: TextField(
                            keyboardType: TextInputType.number,
                            controller: widget.welpenSp,
                          ),
                        ),
                      ],
                    ),
                    // Estimated cub/pup count input
                    Row(
                      children: [
                        Expanded(
                          flex: 7,
                          child: Align(
                            alignment: Alignment.bottomLeft,
                            child: Text(
                              AppLocalizations.of(
                                context,
                              )!.maxAnzahlZusGefaehrdeterTiere,
                            ),
                          ),
                        ),
                        Expanded(
                          flex: 2,
                          child: TextField(
                            keyboardType: TextInputType.number,
                            controller: widget.welpenAnz,
                          ),
                        ),
                      ],
                    ),
                    // Cub/pup track identification confidence
                    Row(
                      children: [
                        Text(AppLocalizations.of(context)!.sicher),
                        Checkbox(
                          value: _wpSicher,
                          onChanged: (val) {
                            setState(() {
                              _wpSicher = val ?? false;
                              widget.spSicher.text =
                                  _spSicher ? "sicher" : "unsicher";
                            });
                          },
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }
}