import React, { useState, useEffect } from 'react';
import { useStore } from 'App/mstore';
import { Loader, NavPrompt } from 'UI';
import WidgetPreview from '../WidgetPreview';
import WidgetSessions from '../WidgetSessions';
import { observer } from 'mobx-react-lite';
import { dashboardMetricDetails, metricDetails, withSiteId } from 'App/routes';
import Breadcrumb from 'Shared/Breadcrumb';
import { FilterKey } from 'Types/filter/filterType';
import { useNavigate, useLocation } from 'react-router';
import {
  TIMESERIES,
  TABLE,
  HEATMAP,
  FUNNEL,
  INSIGHTS,
  USER_PATH,
  RETENTION
} from 'App/constants/card';
import CardUserList from '../CardUserList/CardUserList';
import WidgetViewHeader from 'Components/Dashboard/components/WidgetView/WidgetViewHeader';
import WidgetFormNew from 'Components/Dashboard/components/WidgetForm/WidgetFormNew';
import { Space, Segmented, Tooltip } from 'antd';
import { renderClickmapThumbnail } from 'Components/Dashboard/components/WidgetForm/renderMap';
import Widget from 'App/mstore/types/widget';
import { LayoutPanelTop, LayoutPanelLeft } from 'lucide-react';
import cn from 'classnames';
import { CARD_LIST, CardType } from 'Components/Dashboard/components/DashboardList/NewDashModal/ExampleCards';
import FilterSeries from '@/mstore/types/filterSeries';

interface Props {
  match: any;
  siteId: any;
}

const LAYOUT_KEY = '$__metric_form__layout__$';

function getDefaultState() {
  return localStorage.getItem(LAYOUT_KEY) || 'flex-row';
}

function WidgetView({ match: { params: { siteId, dashboardId, metricId } } }: Props) {
  const [layout, setLayout] = useState(getDefaultState);
  const { metricStore, dashboardStore, settingsStore } = useStore();
  const widget = metricStore.instance;
  const loading = metricStore.isLoading;
  const [expanded] = useState(!metricId || metricId === 'create');
  const hasChanged = widget.hasChanged;
  const dashboard = dashboardStore.dashboards.find((d: any) => d.dashboardId == dashboardId);
  const dashboardName = dashboard ? dashboard.name : null;
  const [metricNotFound, setMetricNotFound] = useState(false);
  const navigate = useNavigate();
  const location = useLocation();
  const [initialInstance, setInitialInstance] = useState();
  const isClickMap = widget.metricType === HEATMAP;

  useEffect(() => {
    if (!metricId || metricId === 'create') {
      const params = new URLSearchParams(location.search);
      const mk = params.get('mk');
      if (mk) {
        metricStore.init();
        const selectedCard = CARD_LIST.find(c => c.key === mk) as CardType;
        if (selectedCard) {
          const cardData: any = {
            metricType: selectedCard.cardType,
            name: selectedCard.title,
            metricOf: selectedCard.metricOf,
            category: mk,
            viewType:
              selectedCard.viewType
              ? selectedCard.viewType
              : selectedCard.cardType === FUNNEL ? 'chart' : 'lineChart',
          };
          if (selectedCard.filters) {
            cardData.series = [
              new FilterSeries().fromJson({
                name: 'Series 1',
                filter: { filters: selectedCard.filters }
              })
            ];
          }
          if (selectedCard.cardType === FUNNEL) {
            cardData.series = [new FilterSeries()];
            cardData.series[0].filter.addFunnelDefaultFilters();
            cardData.series[0].filter.eventsOrder = 'then';
            cardData.series[0].filter.eventsOrderSupport = ['then'];
          }
          metricStore.merge(cardData);
        }
      }
    }
  }, [metricId, location.search, metricStore]);

  useEffect(() => {
    if (metricId && metricId !== 'create') {
      metricStore.fetch(metricId, dashboardStore.period).catch(e => {
        if (e.response.status === 404 || e.response.status === 422) {
          setMetricNotFound(true);
        }
      });
    } else if (!metricStore.instance) {
      metricStore.init();
    }
    const wasCollapsed = settingsStore.menuCollapsed;
    settingsStore.updateMenuCollapsed(true);
    return () => {
      if (!wasCollapsed) settingsStore.updateMenuCollapsed(false);
    };
  }, [metricId, metricStore, dashboardStore.period, settingsStore]);

  useEffect(() => {
    if (metricNotFound) {
      navigate(withSiteId('/metrics', siteId), { replace: true });
    }
  }, [metricNotFound, siteId]);

  const undoChanges = () => {
    const w = new Widget();
    metricStore.merge(w.fromJson(initialInstance), false);
  };

  const onSave = async () => {
    const wasCreating = !widget.exists();
    if (isClickMap) {
      try {
        widget.thumbnail = await renderClickmapThumbnail();
      } catch (e) {
        console.error(e);
      }
    }
    const savedMetric = await metricStore.save(widget);
    setInitialInstance(widget.toJson());
    if (wasCreating) {
      if (parseInt(dashboardId, 10) > 0) {
        navigate(
          withSiteId(dashboardMetricDetails(dashboardId, savedMetric.metricId), siteId)
        , { replace: true });
        void dashboardStore.addWidgetToDashboard(
          dashboardStore.getDashboard(parseInt(dashboardId, 10))!,
          [savedMetric.metricId]
        );
      } else {
        navigate(withSiteId(metricDetails(savedMetric.metricId), siteId), { replace: true });
      }
    }
  };

  const updateLayout = (val: string) => {
    localStorage.setItem(LAYOUT_KEY, val);
    setLayout(val);
  };

  return (
    <Loader loading={loading}>
      <NavPrompt
        when={hasChanged}
        message={(loc: any) =>
          loc.pathname.includes('/metrics/') || loc.pathname.includes('/metric/')
            ? true
            : 'You have unsaved changes. Are you sure you want to leave?'
        }
      />
      <div style={{ maxWidth: '1360px', margin: 'auto' }}>
        <Breadcrumb
          items={[
            {
              label: dashboardName || 'Cards',
              to: dashboardId
                ? withSiteId('/dashboard/' + dashboardId, siteId)
                : withSiteId('/metrics', siteId)
            },
            { label: widget.name }
          ]}
        />
        <Space direction="vertical" className="w-full" size={14}>
          <WidgetViewHeader
            onSave={onSave}
            undoChanges={undoChanges}
            layoutControl={
              <Segmented
                size="small"
                value={layout}
                onChange={updateLayout}
                options={[
                  {
                    value: 'flex-row',
                    icon: (
                      <Tooltip title="Filters on Left">
                        <LayoutPanelLeft size={16} />
                      </Tooltip>
                    )
                  },
                  {
                    value: 'flex-col',
                    icon: (
                      <Tooltip title="Filters on Top">
                        <LayoutPanelTop size={16} />
                      </Tooltip>
                    )
                  },
                  {
                    value: 'flex-row-reverse',
                    icon: (
                      <Tooltip title="Filters on Right">
                        <div className="rotate-180">
                          <LayoutPanelLeft size={16} />
                        </div>
                      </Tooltip>
                    )
                  }
                ]}
              />
            }
          />
          <div className={cn('flex gap-4', layout)}>
            <div className={layout.startsWith('flex-row') ? 'w-1/3' : 'w-full'}>
              <WidgetFormNew layout={layout} />
            </div>
            <div className={layout.startsWith('flex-row') ? 'w-2/3' : 'w-full'}>
              <WidgetPreview name={widget.name} isEditing={expanded} />
              {widget.metricOf !== FilterKey.SESSIONS &&
                widget.metricOf !== FilterKey.ERRORS &&
                ([TABLE, TIMESERIES, HEATMAP, INSIGHTS, FUNNEL, USER_PATH].includes(widget.metricType) ? (
                  <WidgetSessions />
                ) : null)}
              {widget.metricType === RETENTION && <CardUserList />}
            </div>
          </div>
        </Space>
      </div>
    </Loader>
  );
}

export default observer(WidgetView);