/*
 * Copyright (c) 2019 - 2020 Arnaud Vergnet.
 *
 * This file is part of Campus INSAT.
 *
 * Campus INSAT is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Campus INSAT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Campus INSAT.  If not, see <https://www.gnu.org/licenses/>.
 */

import React, { useState } from 'react';
import i18n from 'i18n-js';
import { Snackbar } from 'react-native-paper';
import {
  NativeScrollEvent,
  NativeSyntheticEvent,
  RefreshControl,
  SectionListData,
  SectionListRenderItemInfo,
  StyleSheet,
  View,
} from 'react-native';
import * as Animatable from 'react-native-animatable';
import ErrorView from './ErrorView';
import BasicLoadingScreen from './BasicLoadingScreen';
import { TAB_BAR_HEIGHT } from '../Tabbar/CustomTabBar';
import { ERROR_TYPE } from '../../utils/WebData';
import CollapsibleSectionList from '../Collapsible/CollapsibleSectionList';
import GENERAL_STYLES from '../../constants/Styles';
import RequestScreen from './RequestScreen';

export type SectionListDataType<ItemT> = Array<{
  title: string;
  icon?: string;
  data: Array<ItemT>;
  keyExtractor?: (data: ItemT) => string;
}>;

type Props<ItemT, RawData> = {
  request: () => Promise<RawData>;
  refreshOnFocus: boolean;
  renderItem: (data: SectionListRenderItemInfo<ItemT>) => React.ReactNode;
  createDataset: (
    data: RawData | undefined,
    isLoading: boolean
  ) => SectionListDataType<ItemT>;

  onScroll?: (event: NativeSyntheticEvent<NativeScrollEvent>) => void;
  showError?: boolean;
  itemHeight?: number | null;
  autoRefreshTime?: number;
  updateData?: number | string;
  renderListHeaderComponent?: (
    data?: RawData
  ) => React.ComponentType<any> | React.ReactElement | null;
  renderSectionHeader?: (
    data: { section: SectionListData<ItemT> },
    isLoading: boolean
  ) => React.ReactElement | null;
  stickyHeader?: boolean;
  cache?: RawData;
  onCacheUpdate?: (newCache: RawData) => void;
};

const styles = StyleSheet.create({
  container: {
    minHeight: '100%',
  },
});

/**
 * Component used to render a SectionList with data fetched from the web
 * To force the component to update, change the value of updateData.
 */
function WebSectionList<ItemT, RawData>(props: Props<ItemT, RawData>) {
  const [snackbarVisible, setSnackbarVisible] = useState(false);

  const showSnackBar = () => setSnackbarVisible(true);

  const hideSnackBar = () => setSnackbarVisible(false);

  const getItemLayout = (
    height: number,
    _data: Array<SectionListData<ItemT>> | null,
    index: number
  ): { length: number; offset: number; index: number } => {
    return {
      length: height,
      offset: height * index,
      index,
    };
  };

  const getRenderSectionHeader = (
    data: { section: SectionListData<ItemT> },
    loading: boolean
  ) => {
    const { renderSectionHeader } = props;
    if (renderSectionHeader) {
      return (
        <Animatable.View
          animation={'fadeInUp'}
          duration={500}
          useNativeDriver={true}
        >
          {renderSectionHeader(data, loading)}
        </Animatable.View>
      );
    }
    return null;
  };

  const getRenderItem = (data: SectionListRenderItemInfo<ItemT>) => {
    const { renderItem } = props;
    return (
      <Animatable.View
        animation={'fadeInUp'}
        duration={500}
        useNativeDriver={true}
      >
        {renderItem(data)}
      </Animatable.View>
    );
  };

  const onScroll = (event: NativeSyntheticEvent<NativeScrollEvent>) => {
    if (props.onScroll) {
      props.onScroll(event);
    }
  };

  const render = (
    data: RawData | undefined,
    loading: boolean,
    refreshData: (newRequest?: () => Promise<RawData>) => void
  ) => {
    const { itemHeight } = props;
    const dataset = props.createDataset(data, loading);
    if (!data && !loading) {
      showSnackBar();
    }
    return (
      <CollapsibleSectionList
        sections={dataset}
        extraData={props.updateData}
        paddedProps={(paddingTop) => ({
          refreshControl: (
            <RefreshControl
              progressViewOffset={paddingTop}
              refreshing={loading}
              onRefresh={refreshData}
            />
          ),
        })}
        renderSectionHeader={(info) => getRenderSectionHeader(info, loading)}
        renderItem={getRenderItem}
        stickySectionHeadersEnabled={props.stickyHeader}
        style={styles.container}
        ListHeaderComponent={
          props.renderListHeaderComponent != null
            ? props.renderListHeaderComponent(data)
            : null
        }
        ListEmptyComponent={
          loading ? (
            <BasicLoadingScreen />
          ) : (
            <ErrorView
              status={ERROR_TYPE.CONNECTION_ERROR}
              button={{
                icon: 'refresh',
                text: i18n.t('general.retry'),
                onPress: refreshData,
              }}
            />
          )
        }
        getItemLayout={
          itemHeight ? (d, i) => getItemLayout(itemHeight, d, i) : undefined
        }
        onScroll={onScroll}
        hasTab={true}
      />
    );
  };

  return (
    <View style={GENERAL_STYLES.flex}>
      <RequestScreen<RawData>
        request={props.request}
        render={render}
        showError={false}
        showLoading={false}
        autoRefreshTime={props.autoRefreshTime}
        refreshOnFocus={props.refreshOnFocus}
        cache={props.cache}
        onCacheUpdate={props.onCacheUpdate}
      />
      <Snackbar
        visible={snackbarVisible}
        onDismiss={hideSnackBar}
        action={{
          label: 'OK',
          onPress: hideSnackBar,
        }}
        duration={4000}
        style={{
          bottom: TAB_BAR_HEIGHT,
        }}
      >
        {i18n.t('general.listUpdateFail')}
      </Snackbar>
    </View>
  );
}

export default WebSectionList;