import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:fnotes/note.dart';
import 'package:fnotes/persistent_notes_bloc.dart';
import 'package:fnotes/theme_bloc.dart';

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

  @override
  State<NotesApp> createState() => _NotesAppState();
}

class _NotesAppState extends State<NotesApp> {
  final phraseController = TextEditingController();

  @override
  void initState() {
    context.read<PersistentNotesBloc>().add(LoadNotesEvent());
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Your notes:'),
        actions: [
          IconButton(
            icon: const Icon(Icons.light_mode),
            onPressed: () {
              context.read<PersistedThemeBloc>().add(ThemeChangedEvent());
            },
          )
        ],
      ),
      body: BlocBuilder<PersistentNotesBloc, PersistentNotesState>(
          builder: (context, notesState) {
        return ListView.builder(
          itemCount: notesState.notes.length,
          itemBuilder: (context, index) {
            return Dismissible(
              onDismissed: (direction) {
                context.read<PersistentNotesBloc>().add(NoteDismissed(
                    Note.withId(
                        id: notesState.notes[index].id,
                        content: notesState.notes[index].content)));
              },
              key: ValueKey(notesState.notes[index]),
              child: Card(
                elevation: 5,
                child: SizedBox(
                  height: 50,
                  child: Padding(
                    padding: const EdgeInsets.only(left: 20),
                    child: Align(
                        alignment: Alignment.centerLeft,
                        child: Text(notesState.notes[index].content)),
                  ),
                ),
              ),
            );
          },
        );
      }),
      floatingActionButton: FloatingActionButton(
          onPressed: () {
            final newNote = showEnterItemDialog(context);
            newNote.then(
              (value) {
                if (value != null && value.isNotEmpty) {
                  context
                      .read<PersistentNotesBloc>()
                      .add(NoteEntered(Note(content: value)));
                }
              },
            );
          },
          child: const Icon(Icons.add)),
    );
  }

  Future<String?> showEnterItemDialog(BuildContext context) {
    return showDialog<String>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('New list item'),
          content: TextField(
            onSubmitted: (val) {
              Navigator.pop(context, val);
              phraseController.clear();
            },
            autofocus: true,
            controller: phraseController,
            decoration: InputDecoration(
                hintText: 'Remember me!',
                suffixIcon: IconButton(
                  onPressed: () {
                    Navigator.pop(context, phraseController.value.text);
                    phraseController.clear();
                  },
                  icon: const Icon(Icons.check),
                )),
          ),
          actions: <Widget>[
            TextButton(
              child: const Text('Cancel'),
              onPressed: () {
                Navigator.pop(context);
              },
            ),
          ],
        );
      },
    );
  }
}