notesnook/apps/mobile/app/components/list/empty.js

/* This file is part of the Notesnook project (https://notesnook.com/)
 *
 * Copyright (C) 2022 Streetwriters (Private) Limited
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import React from "react";
import { ActivityIndicator, useWindowDimensions, View } from "react-native";
import { useSafeAreaInsets } from "react-native-safe-area-context";
import { useThemeStore } from "../../stores/use-theme-store";
import { useSettingStore } from "../../stores/use-setting-store";
import { useTip } from "../../services/tip-manager";
import { COLORS_NOTE } from "../../utils/color-scheme";
import { SIZE } from "../../utils/size";
import { Button } from "../ui/button";
import Seperator from "../ui/seperator";
import { Tip } from "../tip";
import Heading from "../ui/typography/heading";
import Paragraph from "../ui/typography/paragraph";
import { notesnook } from "../../../e2e/test.ids";

export const Empty = React.memo(
  function Empty({
    loading = true,
    placeholderData,
    headerProps,
    type,
    screen
  }) {
    const colors = useThemeStore((state) => state.colors);
    const insets = useSafeAreaInsets();
    const { height } = useWindowDimensions();
    const introCompleted = useSettingStore(
      (state) => state.settings.introCompleted
    );

    const tip = useTip(
      screen === "Notes" && introCompleted
        ? "first-note"
        : placeholderData.type || type,
      screen === "Notes" ? "notes" : null
    );

    return (
      <View
        style={[
          {
            height: height - (140 + insets.top),
            width: "80%",
            justifyContent: "center",
            alignSelf: "center"
          }
        ]}
      >
        {!loading ? (
          <>
            <Tip
              color={
                COLORS_NOTE[headerProps.color?.toLowerCase()]
                  ? headerProps.color
                  : "accent"
              }
              tip={tip || { text: placeholderData.paragraph }}
              style={{
                backgroundColor: "transparent",
                paddingHorizontal: 0
              }}
            />
            {placeholderData.button && (
              <Button
                testID={notesnook.buttons.add}
                type="grayAccent"
                title={placeholderData.button}
                iconPosition="right"
                icon="arrow-right"
                onPress={placeholderData.action}
                accentColor={
                  COLORS_NOTE[headerProps.color?.toLowerCase()]
                    ? headerProps.color
                    : "accent"
                }
                accentText="light"
                style={{
                  alignSelf: "flex-start",
                  borderRadius: 5,
                  height: 40
                }}
              />
            )}
          </>
        ) : (
          <>
            <View
              style={{
                alignSelf: "center",
                alignItems: "flex-start",
                width: "100%"
              }}
            >
              <Heading>{placeholderData.heading}</Heading>
              <Paragraph size={SIZE.sm} textBreakStrategy="balanced">
                {placeholderData.loading}
              </Paragraph>
              <Seperator />
              <ActivityIndicator
                size={SIZE.lg}
                color={
                  COLORS_NOTE[headerProps.color?.toLowerCase()] || colors.accent
                }
              />
            </View>
          </>
        )}
      </View>
    );
  },
  (prev, next) => {
    if (prev.loading === next.loading) return true;
    return false;
  }
);

/**
 * Make a tips manager.
 * The tip manager stores many tips. Each tip has following values
 * 1. Text
 * 2. contexts: An array of context strings. // Places where the tip can be shown
 * 3. Button if any.
 * 4. Image/Gif asset.
 *
 * Tip manager adds the following methods -> get(context). Returns a random tip for the following context.
 *
 * Tips can be shown in a sheet or in a list. For sheets, GeneralSheet can be used to
 * render tips.
 *
 * Where can the tips be shown and how?
 * 1. When transitioning, show tips in a sheet. Make sure its useful
 * 2. Replace placeholders with tips.
 * 3. Show tips in editor placeholder.
 * 4. Show tips between list items?
 *
 * Tooltips.
 * Small tooltips can be shown in initial render first time.
 * Especially for items that are not shown on blank page. Should be
 * in places where it makes sense and does not interrupt the user.
 *
 * Can also be shown when first time entering a screen that
 * has something that the user might not know of. Like sorting and side menu.
 *
 * Todo:
 * 1. Make a tip manager.
 * 2. Make a list of tips.
 * 3. Add images for those tips.
 * 4. Show tips
 */