import 'package:adaptive_scrollbar/adaptive_scrollbar.dart';
import 'package:dde_gesture_manager/constants/constants.dart';
import 'package:dde_gesture_manager/extensions.dart';
import 'package:dde_gesture_manager/models/content_layout.provider.dart';
import 'package:dde_gesture_manager/models/scheme.dart';
import 'package:dde_gesture_manager/models/scheme.provider.dart';
import 'package:dde_gesture_manager/models/settings.provider.dart';
import 'package:dde_gesture_manager/utils/helper.dart';
import 'package:dde_gesture_manager/utils/keyboard_mapper.dart';
import 'package:dde_gesture_manager/widgets/dde_button.dart';
import 'package:dde_gesture_manager/widgets/dde_data_table.dart';
import 'package:dde_gesture_manager/widgets/table_cell_shortcut_listener.dart';
import 'package:dde_gesture_manager/widgets/table_cell_text_field.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

const double _headingRowHeight = 56;
const double _scrollBarWidth = 14;

class GestureEditor extends StatelessWidget {
  const GestureEditor({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    var layoutProvider = context.watch<ContentLayoutProvider>();
    var schemeProvider = context.watch<SchemeProvider>();
    final horizontalCtrl = ScrollController();
    final verticalCtrl = ScrollController();

    return Flexible(
      child: Padding(
        padding: const EdgeInsets.all(10),
        child: Container(
          decoration: BoxDecoration(
            color: context.t.backgroundColor,
            borderRadius: BorderRadius.circular(10),
          ),
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 8.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              mainAxisSize: MainAxisSize.max,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Visibility(
                      visible: layoutProvider.localManagerOpened == false,
                      child: DButton(
                        width: defaultButtonHeight,
                        onTap: () => H.openPanel(context, PanelType.local_manager),
                        child: Icon(
                          CupertinoIcons.square_list,
                        ),
                      ),
                    ),
                    Text(
                      LocaleKeys.gesture_editor_label,
                      textAlign: TextAlign.center,
                      style: TextStyle(
                        fontWeight: FontWeight.bold,
                      ),
                    ).tr(),
                    Visibility(
                      visible: layoutProvider.marketOpened == false,
                      child: DButton(
                        width: defaultButtonHeight,
                        onTap: () => H.openPanel(context, PanelType.market),
                        child: Icon(
                          CupertinoIcons.cart,
                        ),
                      ),
                    ),
                  ],
                ),
                Container(height: 10),
                Expanded(
                  child: GestureDetector(
                    onTap: () {
                      context.read<GesturePropProvider>().setProps(editMode: false);
                    },
                    child: Container(
                      decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(defaultBorderRadius),
                        border: Border.all(
                          width: .2,
                          color: context.t.dividerColor,
                        ),
                      ),
                      width: double.infinity,
                      clipBehavior: Clip.antiAlias,
                      child: LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {
                        return AdaptiveScrollbar(
                          controller: verticalCtrl,
                          underColor: Colors.transparent,
                          sliderDecoration: BoxDecoration(
                            borderRadius: BorderRadius.circular(_scrollBarWidth / 2),
                            color: Colors.grey.withOpacity(.4),
                          ),
                          sliderActiveDecoration: BoxDecoration(
                            borderRadius: BorderRadius.circular(_scrollBarWidth / 2),
                            color: Colors.grey.withOpacity(.6),
                          ),
                          position: ScrollbarPosition.right,
                          underSpacing: EdgeInsets.only(top: _headingRowHeight),
                          width: _scrollBarWidth,
                          child: AdaptiveScrollbar(
                            width: _scrollBarWidth,
                            underColor: Colors.transparent,
                            sliderDecoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(_scrollBarWidth / 2),
                              color: Colors.grey.withOpacity(.4),
                            ),
                            sliderActiveDecoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(_scrollBarWidth / 2),
                              color: Colors.grey.withOpacity(.6),
                            ),
                            controller: horizontalCtrl,
                            position: ScrollbarPosition.bottom,
                            child: SingleChildScrollView(
                              scrollDirection: Axis.horizontal,
                              controller: horizontalCtrl,
                              child: ConstrainedBox(
                                constraints: BoxConstraints(minWidth: constraints.maxWidth),
                                child: DDataTable(
                                  showBottomBorder: true,
                                  headingRowHeight: _headingRowHeight,
                                  showCheckboxColumn: true,
                                  headerBackgroundColor: context.t.dialogBackgroundColor,
                                  verticalScrollController: verticalCtrl,
                                  dataRowColor: MaterialStateProperty.resolveWith<Color?>((Set<MaterialState> states) {
                                    if (states.contains(MaterialState.hovered)) return context.t.dialogBackgroundColor;
                                    if (states.contains(MaterialState.selected))
                                      return context.read<SettingsProvider>().currentActiveColor;
                                    return null;
                                  }),
                                  columns: [
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_fingers.tr()), center: true),
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_gesture.tr()), center: true),
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_direction.tr()), center: true),
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_type.tr()), center: true),
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_command.tr())),
                                    DDataColumn(label: Text(LocaleKeys.gesture_editor_remark.tr())),
                                  ],
                                  rows: _buildDataRows(schemeProvider.gestures, context),
                                ),
                              ),
                            ),
                          ),
                        );
                      }),
                    ),
                  ),
                ),
                Container(height: 10),
                Container(
                  height: 300,
                  decoration: BoxDecoration(
                    borderRadius: BorderRadius.circular(defaultBorderRadius),
                    border: Border.all(
                      width: .2,
                      color: context.t.dividerColor,
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

List<DDataRow> _buildDataRows(List<GestureProp>? gestures, BuildContext context) => (gestures ?? []).map((gesture) {
      var gesturePropProvider = context.watch<GesturePropProvider>();
      bool editing = gesturePropProvider == gesture && gesturePropProvider.editMode == true;
      bool selected = gesturePropProvider == gesture && !editing;
      return DDataRow(
        onSelectChanged: (selected) {
          var provider = context.read<GesturePropProvider>();
          if (selected == true) {
            provider.setProps(
              editMode: false,
            );
            Future.microtask(() => provider.setProps(
                  id: gesture.id,
                ));
          } else if (selected == false) {
            provider.onEditEnd = (prop) {
              var schemeProvider = context.read<SchemeProvider>();
              var newGestures = List<GestureProp>.of(schemeProvider.gestures!);
              var index = newGestures.indexWhere((element) => element == prop);
              newGestures[index].copyFrom(prop);
              context.read<SchemeProvider>().setProps(
                    gestures: newGestures..sort(),
                  );
            };
            provider.copyFrom(
              gesture..editMode = true,
            );
          }
        },
        selected: selected,
        cells: editing ? _buildRowCellsEditing(context, gesture) : _buildRowCellsNormal(context, selected, gesture),
      );
    }).toList();

List<DDataCell> _buildRowCellsEditing(BuildContext context, GestureProp gesture) => [
      DButton.dropdown(
        enabled: true,
        child: DropdownButton<int>(
          icon: Icon(Icons.keyboard_arrow_down_rounded),
          items: [3, 4, 5]
              .map(
                (e) => DropdownMenuItem<int>(
                  child: Text('$e'),
                  value: e,
                ),
              )
              .toList(),
          value: context.watch<GesturePropProvider>().fingers,
          onChanged: (value) => context.read<GesturePropProvider>().setProps(
                fingers: value,
                editMode: true,
              ),
          isExpanded: true,
        ),
      ),
      DButton.dropdown(
        enabled: true,
        width: 60.0,
        child: DropdownButton<Gesture>(
          icon: Icon(Icons.keyboard_arrow_down_rounded),
          items: Gesture.values
              .map(
                (e) => DropdownMenuItem<Gesture>(
                  child: Text(
                    '${LocaleKeys.gesture_editor_gestures}.${H.getGestureName(e)}',
                    textScaleFactor: .8,
                  ).tr(),
                  value: e,
                ),
              )
              .toList(),
          value: context.watch<GesturePropProvider>().gesture,
          onChanged: (value) => context.read<GesturePropProvider>().setProps(
                gesture: value,
                editMode: true,
              ),
          isExpanded: true,
        ),
      ),
      DButton.dropdown(
        enabled: true,
        width: 100.0,
        child: DropdownButton<GestureDirection>(
          icon: Icon(Icons.keyboard_arrow_down_rounded),
          items: GestureDirection.values
              .map(
                (e) => DropdownMenuItem<GestureDirection>(
                  child: Text(
                    '${LocaleKeys.gesture_editor_directions}.${H.getGestureDirectionName(e)}',
                    textScaleFactor: .8,
                  ).tr(),
                  value: e,
                ),
              )
              .toList(),
          value: context.watch<GesturePropProvider>().direction,
          onChanged: (value) => context.read<GesturePropProvider>().setProps(
                direction: value,
                editMode: true,
              ),
          isExpanded: true,
        ),
      ),
      DButton.dropdown(
        enabled: true,
        width: 100.0,
        child: DropdownButton<GestureType>(
          icon: Icon(Icons.keyboard_arrow_down_rounded),
          items: GestureType.values
              .map(
                (e) => DropdownMenuItem<GestureType>(
                  child: Text(
                    '${LocaleKeys.gesture_editor_types}.${H.getGestureTypeName(e)}',
                    textScaleFactor: .8,
                  ).tr(),
                  value: e,
                ),
              )
              .toList(),
          value: context.watch<GesturePropProvider>().type,
          onChanged: (value) => context.read<GesturePropProvider>().setProps(
                type: value,
                command: '',
                editMode: true,
              ),
          isExpanded: true,
        ),
      ),
      _buildCommandCellsEditing(context),
      TableCellTextField(
        initText: gesture.remark,
        hint: 'pls input cmd',
        onComplete: (value) => context.read<GesturePropProvider>().setProps(
              remark: value,
              editMode: true,
            ),
      ),
    ].map((e) => DDataCell(e)).toList();

Widget _buildCommandCellsEditing(BuildContext context) {
  var gesture = context.read<GesturePropProvider>();
  switch (gesture.type) {
    case GestureType.commandline:
      return TableCellTextField(
        initText: gesture.command,
        hint: 'pls input cmd',
        onComplete: (value) => context.read<GesturePropProvider>().setProps(
              command: value,
              editMode: true,
            ),
      );
    case GestureType.built_in:
      return DButton.dropdown(
        enabled: true,
        width: 250.0,
        child: DropdownButton<String>(
          icon: Icon(Icons.keyboard_arrow_down_rounded),
          items: builtInCommands
              .map(
                (e) => DropdownMenuItem<String>(
                  child: Text(
                    e,
                    textScaleFactor: .8,
                  ),
                  value: e,
                ),
              )
              .toList(),
          value: builtInCommands.contains(gesture.command) ? gesture.command : builtInCommands.first,
          onChanged: (value) => context.read<GesturePropProvider>().setProps(
                command: value,
                editMode: true,
              ),
          isExpanded: true,
        ),
      );
    case GestureType.shortcut:
      return TableCellShortcutListener(
        width: 250.0,
        initShortcut: gesture.command ?? '',
        onComplete: (value) => context.read<GesturePropProvider>().setProps(
              command: value,
              editMode: true,
            ),
      );
    default:
      throw Exception('Unknown gesture command type.');
  }
}

List<DDataCell> _buildRowCellsNormal(BuildContext context, bool selected, GestureProp gesture) => [
      Center(
        child: Text(
          '${gesture.fingers}',
        ),
      ),
      Center(
        child: Text(
          '${LocaleKeys.gesture_editor_gestures}.${H.getGestureName(gesture.gesture)}',
        ).tr(),
      ),
      Center(
          child: Text(
        '${LocaleKeys.gesture_editor_directions}.${H.getGestureDirectionName(gesture.direction)}',
      ).tr()),
      Center(
          child: Text(
        '${LocaleKeys.gesture_editor_types}.${H.getGestureTypeName(gesture.type)}',
      ).tr()),
      gesture.type == GestureType.shortcut
          ? Row(
              mainAxisAlignment: MainAxisAlignment.start,
              children: (gesture.command ?? '').split('+').map(
                (e) {
                  var keyNames = getPhysicalKeyNamesByRealName(e);
                  return Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 2.0),
                    child: Container(
                      decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(defaultBorderRadius / 2),
                        color: context.t.dialogBackgroundColor,
                        border: Border.all(
                          width: 1,
                          color: Color(0xff565656),
                        ),
                      ),
                      child: Padding(
                        padding: const EdgeInsets.symmetric(horizontal: 5.0),
                        child: Text(
                          keyNames != null ? keyNames.displayName : LocaleKeys.str_null.tr(),
                          style: TextStyle(
                            color: context.watch<SettingsProvider>().currentActiveColor,
                          ),
                        ),
                      ),
                    ),
                  );
                },
              ).toList(),
            )
          : Text(
              gesture.command ?? '',
            ),
      Text(
        gesture.remark ?? '',
      ),
    ]
        .map(
          (ele) => DDataCell(DefaultTextStyle(
              style: context.t.textTheme.bodyText2!.copyWith(
                color: selected ? Colors.white : null,
              ),
              child: ele)),
        )
        .toList();