import 'package:flutter/material.dart';

import 'package:appflowy/generated/flowy_svgs.g.dart';
import 'package:appflowy/generated/locale_keys.g.dart';
import 'package:appflowy/plugins/base/emoji/emoji_picker.dart';
import 'package:appflowy_backend/protobuf/flowy-folder/icon.pbenum.dart';
import 'package:appflowy_editor/appflowy_editor.dart';
import 'package:easy_localization/easy_localization.dart';
import 'package:flowy_infra_ui/flowy_infra_ui.dart';
import 'package:flowy_infra_ui/style_widget/hover.dart';

extension ToProto on FlowyIconType {
  ViewIconTypePB toProto() {
    switch (this) {
      case FlowyIconType.emoji:
        return ViewIconTypePB.Emoji;
      case FlowyIconType.icon:
        return ViewIconTypePB.Icon;
      case FlowyIconType.custom:
        return ViewIconTypePB.Url;
    }
  }
}

enum FlowyIconType {
  emoji,
  icon,
  custom;
}

class EmojiPickerResult {
  factory EmojiPickerResult.none() =>
      const EmojiPickerResult(FlowyIconType.icon, '');

  factory EmojiPickerResult.emoji(String emoji) =>
      EmojiPickerResult(FlowyIconType.emoji, emoji);

  const EmojiPickerResult(
    this.type,
    this.emoji,
  );

  final FlowyIconType type;
  final String emoji;
}

class FlowyIconPicker extends StatelessWidget {
  const FlowyIconPicker({
    super.key,
    required this.onSelected,
  });

  final void Function(EmojiPickerResult result) onSelected;

  @override
  Widget build(BuildContext context) {
    // ONLY supports emoji picker for now
    return DefaultTabController(
      length: 1,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Row(
            children: [
              _buildTabs(context),
              const Spacer(),
              _RemoveIconButton(
                onTap: () => onSelected(EmojiPickerResult.none()),
              ),
            ],
          ),
          const Divider(height: 2),
          Expanded(
            child: TabBarView(
              children: [
                FlowyEmojiPicker(
                  emojiPerLine: _getEmojiPerLine(context),
                  onEmojiSelected: (_, emoji) =>
                      onSelected(EmojiPickerResult.emoji(emoji)),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildTabs(BuildContext context) {
    return Align(
      alignment: Alignment.centerLeft,
      child: TabBar(
        indicatorSize: TabBarIndicatorSize.label,
        isScrollable: true,
        overlayColor: MaterialStatePropertyAll(
          Theme.of(context).colorScheme.secondary,
        ),
        padding: EdgeInsets.zero,
        tabs: [
          FlowyHover(
            style: const HoverStyle(borderRadius: BorderRadius.zero),
            child: Padding(
              padding: const EdgeInsets.symmetric(
                horizontal: 12.0,
                vertical: 8.0,
              ),
              child: FlowyText(LocaleKeys.emoji_emojiTab.tr()),
            ),
          ),
        ],
      ),
    );
  }

  int _getEmojiPerLine(BuildContext context) {
    if (PlatformExtension.isDesktopOrWeb) {
      return 9;
    }
    final width = MediaQuery.of(context).size.width;
    return width ~/ 46.0; // the size of the emoji
  }
}

class _RemoveIconButton extends StatelessWidget {
  const _RemoveIconButton({required this.onTap});

  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 28,
      child: FlowyButton(
        onTap: onTap,
        useIntrinsicWidth: true,
        text: FlowyText.small(
          LocaleKeys.document_plugins_cover_removeIcon.tr(),
        ),
        leftIcon: const FlowySvg(FlowySvgs.delete_s),
      ),
    );
  }
}