import 'package:flutter/material.dart';
import 'package:i18n_extension/i18n_widget.dart';

import '../models/documents/attribute.dart';
import '../models/themes/quill_custom_button.dart';
import '../models/themes/quill_dialog_theme.dart';
import '../models/themes/quill_icon_theme.dart';
import '../translations/toolbar.i18n.dart';
import '../utils/font.dart';
import 'controller.dart';
import 'embeds.dart';
import 'toolbar/arrow_indicated_button_list.dart';
import 'toolbar/clear_format_button.dart';
import 'toolbar/color_button.dart';
import 'toolbar/history_button.dart';
import 'toolbar/indent_button.dart';
import 'toolbar/link_style_button.dart';
import 'toolbar/quill_font_family_button.dart';
import 'toolbar/quill_font_size_button.dart';
import 'toolbar/quill_icon_button.dart';
import 'toolbar/search_button.dart';
import 'toolbar/select_alignment_button.dart';
import 'toolbar/select_header_style_button.dart';
import 'toolbar/toggle_check_list_button.dart';
import 'toolbar/toggle_style_button.dart';

export 'toolbar/clear_format_button.dart';
export 'toolbar/color_button.dart';
export 'toolbar/history_button.dart';
export 'toolbar/indent_button.dart';
export 'toolbar/link_style_button.dart';
export 'toolbar/quill_font_size_button.dart';
export 'toolbar/quill_icon_button.dart';
export 'toolbar/select_alignment_button.dart';
export 'toolbar/select_header_style_button.dart';
export 'toolbar/toggle_check_list_button.dart';
export 'toolbar/toggle_style_button.dart';

// The default size of the icon of a button.
const double kDefaultIconSize = 18;

// The factor of how much larger the button is in relation to the icon.
const double kIconButtonFactor = 1.77;

class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
  const QuillToolbar({
    required this.children,
    this.axis = Axis.horizontal,
    this.toolbarSize = 36,
    this.toolbarIconAlignment = WrapAlignment.center,
    this.toolbarIconCrossAlignment = WrapCrossAlignment.center,
    this.toolbarSectionSpacing = 4,
    this.multiRowsDisplay = true,
    this.color,
    this.customButtons = const [],
    this.locale,
    VoidCallback? afterButtonPressed,
    Key? key,
  }) : super(key: key);

  factory QuillToolbar.basic({
    required QuillController controller,
    Axis axis = Axis.horizontal,
    double toolbarIconSize = kDefaultIconSize,
    double toolbarSectionSpacing = 4,
    WrapAlignment toolbarIconAlignment = WrapAlignment.center,
    WrapCrossAlignment toolbarIconCrossAlignment = WrapCrossAlignment.center,
    bool showDividers = true,
    bool showFontFamily = true,
    bool showFontSize = true,
    bool showBoldButton = true,
    bool showItalicButton = true,
    bool showSmallButton = false,
    bool showUnderLineButton = true,
    bool showStrikeThrough = true,
    bool showInlineCode = true,
    bool showColorButton = true,
    bool showBackgroundColorButton = true,
    bool showClearFormat = true,
    bool showAlignmentButtons = false,
    bool showLeftAlignment = true,
    bool showCenterAlignment = true,
    bool showRightAlignment = true,
    bool showJustifyAlignment = true,
    bool showHeaderStyle = true,
    bool showListNumbers = true,
    bool showListBullets = true,
    bool showListCheck = true,
    bool showCodeBlock = true,
    bool showQuote = true,
    bool showIndent = true,
    bool showLink = true,
    bool showUndo = true,
    bool showRedo = true,
    bool multiRowsDisplay = true,
    bool showDirection = false,
    bool showSearchButton = true,
    List<QuillCustomButton> customButtons = const [],

    ///Map of font sizes in string
    Map<String, String>? fontSizeValues,

    ///Map of font families in string
    Map<String, String>? fontFamilyValues,

    /// Toolbar items to display for controls of embed blocks
    List<EmbedButtonBuilder>? embedButtons,

    ///The theme to use for the icons in the toolbar, uses type [QuillIconTheme]
    QuillIconTheme? iconTheme,

    ///The theme to use for the theming of the [LinkDialog()],
    ///shown when embedding an image, for example
    QuillDialogTheme? dialogTheme,

    /// Callback to be called after any button on the toolbar is pressed.
    /// Is called after whatever logic the button performs has run.
    VoidCallback? afterButtonPressed,

    /// The locale to use for the editor toolbar, defaults to system locale
    /// More at https://github.com/singerdmx/flutter-quill#translation
    Locale? locale,

    /// The color of the toolbar
    Color? color,
    Key? key,
  }) {
    final isButtonGroupShown = [
      showFontFamily ||
          showFontSize ||
          showBoldButton ||
          showItalicButton ||
          showSmallButton ||
          showUnderLineButton ||
          showStrikeThrough ||
          showInlineCode ||
          showColorButton ||
          showBackgroundColorButton ||
          showClearFormat ||
          embedButtons?.isNotEmpty == true,
      showAlignmentButtons || showDirection,
      showLeftAlignment,
      showCenterAlignment,
      showRightAlignment,
      showJustifyAlignment,
      showHeaderStyle,
      showListNumbers || showListBullets || showListCheck || showCodeBlock,
      showQuote || showIndent,
      showLink || showSearchButton
    ];

    //default font size values
    final fontSizes = fontSizeValues ??
        {
          'Small'.i18n: 'small',
          'Large'.i18n: 'large',
          'Huge'.i18n: 'huge',
          'Clear'.i18n: '0'
        };

    //default font family values
    final fontFamilies = fontFamilyValues ??
        {
          'Sans Serif': 'sans-serif',
          'Serif': 'serif',
          'Monospace': 'monospace',
          'Ibarra Real Nova': 'ibarra-real-nova',
          'SquarePeg': 'square-peg',
          'Nunito': 'nunito',
          'Pacifico': 'pacifico',
          'Roboto Mono': 'roboto-mono',
          'Clear'.i18n: 'Clear'
        };

    return QuillToolbar(
      key: key,
      axis: axis,
      color: color,
      toolbarSize: toolbarIconSize * 2,
      toolbarSectionSpacing: toolbarSectionSpacing,
      toolbarIconAlignment: toolbarIconAlignment,
      toolbarIconCrossAlignment: toolbarIconCrossAlignment,
      multiRowsDisplay: multiRowsDisplay,
      customButtons: customButtons,
      locale: locale,
      afterButtonPressed: afterButtonPressed,
      children: [
        if (showUndo)
          HistoryButton(
            icon: Icons.undo_outlined,
            iconSize: toolbarIconSize,
            controller: controller,
            undo: true,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showRedo)
          HistoryButton(
            icon: Icons.redo_outlined,
            iconSize: toolbarIconSize,
            controller: controller,
            undo: false,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showFontFamily)
          QuillFontFamilyButton(
            iconTheme: iconTheme,
            iconSize: toolbarIconSize,
            attribute: Attribute.font,
            controller: controller,
            items: [
              for (MapEntry<String, String> fontFamily in fontFamilies.entries)
                PopupMenuItem<String>(
                  key: ValueKey(fontFamily.key),
                  value: fontFamily.value,
                  child: Text(fontFamily.key.toString(),
                      style: TextStyle(
                          color:
                              fontFamily.value == 'Clear' ? Colors.red : null)),
                ),
            ],
            onSelected: (newFont) {
              controller.formatSelection(Attribute.fromKeyValue(
                  'font', newFont == 'Clear' ? null : newFont));
            },
            rawItemsMap: fontFamilies,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showFontSize)
          QuillFontSizeButton(
            iconTheme: iconTheme,
            iconSize: toolbarIconSize,
            attribute: Attribute.size,
            controller: controller,
            items: [
              for (MapEntry<String, String> fontSize in fontSizes.entries)
                PopupMenuItem<String>(
                  key: ValueKey(fontSize.key),
                  value: fontSize.value,
                  child: Text(fontSize.key.toString(),
                      style: TextStyle(
                          color: fontSize.value == '0' ? Colors.red : null)),
                ),
            ],
            onSelected: (newSize) {
              controller.formatSelection(Attribute.fromKeyValue(
                  'size', newSize == '0' ? null : getFontSize(newSize)));
            },
            rawItemsMap: fontSizes,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showBoldButton)
          ToggleStyleButton(
            attribute: Attribute.bold,
            icon: Icons.format_bold,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showItalicButton)
          ToggleStyleButton(
            attribute: Attribute.italic,
            icon: Icons.format_italic,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showSmallButton)
          ToggleStyleButton(
            attribute: Attribute.small,
            icon: Icons.format_size,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showUnderLineButton)
          ToggleStyleButton(
            attribute: Attribute.underline,
            icon: Icons.format_underline,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showStrikeThrough)
          ToggleStyleButton(
            attribute: Attribute.strikeThrough,
            icon: Icons.format_strikethrough,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showInlineCode)
          ToggleStyleButton(
            attribute: Attribute.inlineCode,
            icon: Icons.code,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showColorButton)
          ColorButton(
            icon: Icons.color_lens,
            iconSize: toolbarIconSize,
            controller: controller,
            background: false,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showBackgroundColorButton)
          ColorButton(
            icon: Icons.format_color_fill,
            iconSize: toolbarIconSize,
            controller: controller,
            background: true,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showClearFormat)
          ClearFormatButton(
            icon: Icons.format_clear,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (embedButtons != null)
          for (final builder in embedButtons)
            builder(controller, toolbarIconSize, iconTheme, dialogTheme),
        if (showDividers &&
            isButtonGroupShown[0] &&
            (isButtonGroupShown[1] ||
                isButtonGroupShown[2] ||
                isButtonGroupShown[3] ||
                isButtonGroupShown[4] ||
                isButtonGroupShown[5]))
          _dividerOnAxis(axis),
        if (showAlignmentButtons)
          SelectAlignmentButton(
            controller: controller,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            showLeftAlignment: showLeftAlignment,
            showCenterAlignment: showCenterAlignment,
            showRightAlignment: showRightAlignment,
            showJustifyAlignment: showJustifyAlignment,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showDirection)
          ToggleStyleButton(
            attribute: Attribute.rtl,
            controller: controller,
            icon: Icons.format_textdirection_r_to_l,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showDividers &&
            isButtonGroupShown[1] &&
            (isButtonGroupShown[2] ||
                isButtonGroupShown[3] ||
                isButtonGroupShown[4] ||
                isButtonGroupShown[5]))
          _dividerOnAxis(axis),
        if (showHeaderStyle)
          SelectHeaderStyleButton(
            controller: controller,
            axis: axis,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showDividers &&
            showHeaderStyle &&
            isButtonGroupShown[2] &&
            (isButtonGroupShown[3] ||
                isButtonGroupShown[4] ||
                isButtonGroupShown[5]))
          _dividerOnAxis(axis),
        if (showListNumbers)
          ToggleStyleButton(
            attribute: Attribute.ol,
            controller: controller,
            icon: Icons.format_list_numbered,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showListBullets)
          ToggleStyleButton(
            attribute: Attribute.ul,
            controller: controller,
            icon: Icons.format_list_bulleted,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showListCheck)
          ToggleCheckListButton(
            attribute: Attribute.unchecked,
            controller: controller,
            icon: Icons.check_box,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showCodeBlock)
          ToggleStyleButton(
            attribute: Attribute.codeBlock,
            controller: controller,
            icon: Icons.code,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showDividers &&
            isButtonGroupShown[3] &&
            (isButtonGroupShown[4] || isButtonGroupShown[5]))
          _dividerOnAxis(axis),
        if (showQuote)
          ToggleStyleButton(
            attribute: Attribute.blockQuote,
            controller: controller,
            icon: Icons.format_quote,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showIndent)
          IndentButton(
            icon: Icons.format_indent_increase,
            iconSize: toolbarIconSize,
            controller: controller,
            isIncrease: true,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showIndent)
          IndentButton(
            icon: Icons.format_indent_decrease,
            iconSize: toolbarIconSize,
            controller: controller,
            isIncrease: false,
            iconTheme: iconTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showDividers && isButtonGroupShown[4] && isButtonGroupShown[5])
          _dividerOnAxis(axis),
        if (showLink)
          LinkStyleButton(
            controller: controller,
            iconSize: toolbarIconSize,
            iconTheme: iconTheme,
            dialogTheme: dialogTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (showSearchButton)
          SearchButton(
            icon: Icons.search,
            iconSize: toolbarIconSize,
            controller: controller,
            iconTheme: iconTheme,
            dialogTheme: dialogTheme,
            afterButtonPressed: afterButtonPressed,
          ),
        if (customButtons.isNotEmpty)
          if (showDividers) _dividerOnAxis(axis),
        for (var customButton in customButtons)
          QuillIconButton(
            highlightElevation: 0,
            hoverElevation: 0,
            size: toolbarIconSize * kIconButtonFactor,
            icon: Icon(customButton.icon, size: toolbarIconSize),
            borderRadius: iconTheme?.borderRadius ?? 2,
            onPressed: customButton.onTap,
            afterPressed: afterButtonPressed,
          ),
      ],
    );
  }

  static Widget _dividerOnAxis(Axis axis) {
    if (axis == Axis.horizontal) {
      return const VerticalDivider(
        indent: 12,
        endIndent: 12,
        color: Colors.grey,
      );
    } else {
      return const Divider(
        indent: 12,
        endIndent: 12,
        color: Colors.grey,
      );
    }
  }

  final List<Widget> children;
  final Axis axis;
  final double toolbarSize;
  final double toolbarSectionSpacing;
  final WrapAlignment toolbarIconAlignment;
  final WrapCrossAlignment toolbarIconCrossAlignment;
  final bool multiRowsDisplay;

  /// The color of the toolbar.
  ///
  /// Defaults to [ThemeData.canvasColor] of the current [Theme] if no color
  /// is given.
  final Color? color;

  /// The locale to use for the editor toolbar, defaults to system locale
  /// More https://github.com/singerdmx/flutter-quill#translation
  final Locale? locale;

  /// List of custom buttons
  final List<QuillCustomButton> customButtons;

  @override
  Size get preferredSize => axis == Axis.horizontal
      ? Size.fromHeight(toolbarSize)
      : Size.fromWidth(toolbarSize);

  @override
  Widget build(BuildContext context) {
    return I18n(
      initialLocale: locale,
      child: multiRowsDisplay
          ? Wrap(
              direction: axis,
              alignment: toolbarIconAlignment,
              crossAxisAlignment: toolbarIconCrossAlignment,
              runSpacing: 4,
              spacing: toolbarSectionSpacing,
              children: children,
            )
          : Container(
              constraints: BoxConstraints.tightFor(
                height: axis == Axis.horizontal ? toolbarSize : null,
                width: axis == Axis.vertical ? toolbarSize : null,
              ),
              color: color ?? Theme.of(context).canvasColor,
              child: ArrowIndicatedButtonList(
                axis: axis,
                buttons: children,
              ),
            ),
    );
  }
}