import log from "loglevel";
import React from "react";
import styled from "styled-components";
import * as Sentry from "@sentry/react";
import { useSelector } from "react-redux";
import type { CanvasWidgetStructure } from "WidgetProvider/constants";
import useWidgetFocus from "utils/hooks/useWidgetFocus";
import { useFeatureFlag } from "utils/hooks/useFeatureFlag";
import { combinedPreviewModeSelector } from "selectors/editorSelectors";
import { getSelectedAppTheme } from "selectors/appThemingSelectors";
import { getViewportClassName } from "layoutSystems/autolayout/utils/AutoLayoutUtils";
import type { FontFamily } from "@design-system/theming";
import {
  ThemeProvider as WDSThemeProvider,
  useTheme,
} from "@design-system/theming";
import { getIsAppSettingsPaneWithNavigationTabOpen } from "selectors/appSettingsPaneSelectors";
import { CANVAS_ART_BOARD } from "constants/componentClassNameConstants";
import { renderAppsmithCanvas } from "layoutSystems/CanvasFactory";
import type { WidgetProps } from "widgets/BaseWidget";
import { LayoutSystemTypes } from "layoutSystems/types";
import { getLayoutSystemType } from "selectors/layoutSystemSelectors";
import { getAppThemeSettings } from "@appsmith/selectors/applicationSelectors";

interface CanvasProps {
  widgetsStructure: CanvasWidgetStructure;
  pageId: string;
  canvasWidth: number;
  enableMainCanvasResizer?: boolean;
}

const Wrapper = styled.section<{
  background: string;
  width: number;
  $enableMainCanvasResizer: boolean;
}>`
  background: ${({ background }) => background};
  width: ${({ $enableMainCanvasResizer, width }) =>
    $enableMainCanvasResizer ? `100%` : `${width}px`};
`;
const Canvas = (props: CanvasProps) => {
  const { canvasWidth } = props;
  const isPreviewMode = useSelector(combinedPreviewModeSelector);
  const isAppSettingsPaneWithNavigationTabOpen = useSelector(
    getIsAppSettingsPaneWithNavigationTabOpen,
  );
  const selectedTheme = useSelector(getSelectedAppTheme);
  const isWDSEnabled = useFeatureFlag("ab_wds_enabled");
  const layoutSystemType: LayoutSystemTypes = useSelector(getLayoutSystemType);

  const themeSetting = useSelector(getAppThemeSettings);
  const themeProps = {
    borderRadius: selectedTheme.properties.borderRadius.appBorderRadius,
    seedColor: selectedTheme.properties.colors.primaryColor,
    fontFamily: selectedTheme.properties.fontFamily.appFont as FontFamily,
  };
  const wdsThemeProps = {
    borderRadius: themeSetting.borderRadius,
    seedColor: themeSetting.accentColor,
    colorMode: themeSetting.colorMode.toLowerCase(),
    fontFamily: themeSetting.fontFamily as FontFamily,
    userSizing: themeSetting.sizing,
    userDensity: themeSetting.density,
  };
  const { theme } = useTheme(isWDSEnabled ? wdsThemeProps : themeProps);

  /**
   * background for canvas
   */
  let backgroundForCanvas: string;

  if (isPreviewMode || isAppSettingsPaneWithNavigationTabOpen) {
    backgroundForCanvas = "initial";
  } else {
    backgroundForCanvas = selectedTheme.properties.colors.backgroundColor;
  }

  const focusRef = useWidgetFocus();

  const marginHorizontalClass = props.enableMainCanvasResizer
    ? `mx-0`
    : `mx-auto`;
  const paddingBottomClass = props.enableMainCanvasResizer ? "" : "pb-52";

  const height = layoutSystemType === LayoutSystemTypes.ANVIL ? "h-full" : "";

  const renderChildren = () => {
    return (
      <Wrapper
        $enableMainCanvasResizer={!!props.enableMainCanvasResizer}
        background={isWDSEnabled ? "" : backgroundForCanvas}
        className={`relative t--canvas-artboard ${height} ${paddingBottomClass} transition-all duration-400  ${marginHorizontalClass} ${getViewportClassName(
          canvasWidth,
        )}`}
        data-testid={"t--canvas-artboard"}
        id={CANVAS_ART_BOARD}
        ref={isWDSEnabled ? undefined : focusRef}
        width={canvasWidth}
      >
        {props.widgetsStructure.widgetId &&
          renderAppsmithCanvas({
            ...props.widgetsStructure,
            classList:
              layoutSystemType === LayoutSystemTypes.ANVIL
                ? ["main-anvil-canvas"]
                : [],
          } as WidgetProps)}
      </Wrapper>
    );
  };

  try {
    if (isWDSEnabled) {
      return (
        <WDSThemeProvider theme={theme}>{renderChildren()}</WDSThemeProvider>
      );
    }

    return renderChildren();
  } catch (error) {
    log.error("Error rendering DSL", error);
    Sentry.captureException(error);
    return null;
  }
};

export default Canvas;
