import 'package:flutter/material.dart';
import 'package:flutter_widget_from_html_core/flutter_widget_from_html_core.dart';
import 'package:go_router/go_router.dart';
import 'package:logging/logging.dart';
import 'package:provider/provider.dart';

import '../controls/padding.dart';
import '../controls/timeline/status_header_control.dart';
import '../models/timeline_entry.dart';
import '../services/timeline_manager.dart';
import '../utils/snackbar_builder.dart';

class EditorScreen extends StatefulWidget {
  final String id;
  final String parentId;

  const EditorScreen({super.key, this.id = '', this.parentId = ''});

  @override
  State<EditorScreen> createState() => _EditorScreenState();
}

class _EditorScreenState extends State<EditorScreen> {
  static final _logger = Logger('$EditorScreen');
  final contentController = TextEditingController();
  final spoilerController = TextEditingController();
  TimelineEntry? parentEntry;

  bool get isComment => widget.parentId.isNotEmpty;

  String get statusType => widget.parentId.isEmpty ? 'Post' : 'Comment';

  @override
  void initState() {
    if (!isComment) {
      return;
    }

    final manager = context.read<TimelineManager>();
    manager.getEntryById(widget.parentId).match(onSuccess: (entry) {
      spoilerController.text = entry.spoilerText;
      parentEntry = entry;
    }, onError: (error) {
      _logger.finest('Error trying to get parent entry: $error');
    });
  }

  Future<void> createStatus(
      BuildContext context, TimelineManager manager) async {
    if (contentController.text.isEmpty) {
      buildSnackbar(context, "Can't submit an empty post/comment");
      return;
    }
    final result = await manager.createNewStatus(
      contentController.text,
      spoilerText: spoilerController.text,
      inReplyToId: widget.parentId,
    );

    if (result.isFailure) {
      buildSnackbar(context, 'Error posting: ${result.error}');
      return;
    }
    context.pop();
  }

  @override
  Widget build(BuildContext context) {
    print('Build editor $isComment $parentEntry');
    final manager = context.read<TimelineManager>();

    return Scaffold(
      appBar: AppBar(
        automaticallyImplyLeading: false,
        title: Text(widget.id.isEmpty ? 'New $statusType' : 'Edit $statusType'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Center(
          child: SingleChildScrollView(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisAlignment: MainAxisAlignment.start,
              children: [
                if (isComment && parentEntry != null)
                  buildCommentPreview(context, parentEntry!),
                TextFormField(
                  controller: spoilerController,
                  decoration: InputDecoration(
                    labelText: '$statusType Spoiler Text (optional)',
                    border: OutlineInputBorder(
                      borderSide: BorderSide(
                        color: Theme.of(context).backgroundColor,
                      ),
                      borderRadius: BorderRadius.circular(5.0),
                    ),
                  ),
                ),
                const VerticalPadding(),
                TextFormField(
                  maxLines: 10,
                  controller: contentController,
                  decoration: InputDecoration(
                    labelText: '$statusType Content',
                    alignLabelWithHint: true,
                    border: OutlineInputBorder(
                      borderSide: BorderSide(
                        color: Theme.of(context).backgroundColor,
                      ),
                      borderRadius: BorderRadius.circular(5.0),
                    ),
                  ),
                ),
                const VerticalPadding(),
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    ElevatedButton(
                      onPressed: () async => createStatus(context, manager),
                      child: const Text('Submit'),
                    ),
                    const HorizontalPadding(),
                    ElevatedButton(
                      onPressed: () {
                        context.pop();
                      },
                      child: const Text('Cancel'),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  Widget buildCommentPreview(BuildContext context, TimelineEntry entry) {
    print('Build preview');
    return Column(
      mainAxisAlignment: MainAxisAlignment.start,
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          'Comment for status: ',
          style: Theme.of(context).textTheme.bodyLarge,
        ),
        Card(
          child: Padding(
            padding: const EdgeInsets.all(8.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                StatusHeaderControl(
                  entry: entry,
                  showActionBar: false,
                ),
                const VerticalPadding(height: 3),
                if (entry.spoilerText.isNotEmpty) ...[
                  Text(
                    'Content Summary: ${entry.spoilerText}',
                    style: Theme.of(context).textTheme.bodyLarge,
                  ),
                  const VerticalPadding(height: 3)
                ],
                HtmlWidget(entry.body),
              ],
            ),
          ),
        ),
        const VerticalPadding(),
      ],
    );
  }
}