HKSingleParty/03_source/mobile/src/pages/About.tsx

import React, { useState } from 'react';
import {
  IonHeader,
  IonToolbar,
  IonContent,
  IonPage,
  IonButtons,
  IonMenuButton,
  IonButton,
  IonIcon,
  IonDatetime,
  IonSelectOption,
  IonList,
  IonItem,
  IonLabel,
  IonSelect,
  IonPopover,
  IonText,
} from '@ionic/react';
import './About.scss';
import { ellipsisHorizontal, ellipsisVertical } from 'ionicons/icons';
import AboutPopover from '../components/AboutPopover';
import { format, parseISO } from 'date-fns';

interface AboutProps {}

const About: React.FC<AboutProps> = () => {
  const [showPopover, setShowPopover] = useState(false);
  const [popoverEvent, setPopoverEvent] = useState<MouseEvent>();
  const [location, setLocation] = useState<
    'madison' | 'austin' | 'chicago' | 'seattle'
  >('madison');
  const [conferenceDate, setConferenceDate] = useState(
    '2047-05-17T00:00:00-05:00'
  );

  const selectOptions = {
    header: 'Select a Location',
  };

  const presentPopover = (e: React.MouseEvent) => {
    setPopoverEvent(e.nativeEvent);
    setShowPopover(true);
  };

  function displayDate(date: string, dateFormat: string) {
    return format(parseISO(date), dateFormat);
  }

  return (
    <IonPage id="about-page">
      <IonContent>
        <IonHeader className="ion-no-border">
          <IonToolbar>
            <IonButtons slot="start">
              <IonMenuButton></IonMenuButton>
            </IonButtons>
            <IonButtons slot="end">
              <IonButton onClick={presentPopover}>
                <IonIcon
                  slot="icon-only"
                  ios={ellipsisHorizontal}
                  md={ellipsisVertical}
                ></IonIcon>
              </IonButton>
            </IonButtons>
          </IonToolbar>
        </IonHeader>

        <div className="about-header">
          {/* Instead of loading an image each time the select changes, use opacity to transition them */}
          <div
            className="about-image madison"
            style={{ opacity: location === 'madison' ? '1' : undefined }}
          ></div>
          <div
            className="about-image austin"
            style={{ opacity: location === 'austin' ? '1' : undefined }}
          ></div>
          <div
            className="about-image chicago"
            style={{ opacity: location === 'chicago' ? '1' : undefined }}
          ></div>
          <div
            className="about-image seattle"
            style={{ opacity: location === 'seattle' ? '1' : undefined }}
          ></div>
        </div>
        <div className="about-info">
          <h3 className="ion-padding-top ion-padding-start">About</h3>

          <p className="ion-padding-start ion-padding-end">
            The Ionic Conference is a one-day event happening on {' '}
            {displayDate(conferenceDate, 'MMM dd, yyyy')}, featuring talks from the
            Ionic team. The conference focuses on building applications with Ionic
            Framework, including topics such as app migration to the latest version,
            React best practices, Webpack, Sass, and other technologies
            commonly used in the Ionic ecosystem. Tickets are completely sold out,
            and we're expecting over 1,000 developers — making this the largest
            Ionic conference to date!
          </p>

          <h3 className="ion-padding-top ion-padding-start">Details</h3>

          <IonList lines="none">
            <IonItem>
              <IonSelect
                label="Location"
                value={location}
                interfaceOptions={selectOptions}
                onIonChange={(e) => setLocation(e.detail.value as any)}
              >
                <IonSelectOption value="madison">Madison, WI</IonSelectOption>
                <IonSelectOption value="austin">Austin, TX</IonSelectOption>
                <IonSelectOption value="chicago">Chicago, IL</IonSelectOption>
                <IonSelectOption value="seattle">Seattle, WA</IonSelectOption>
              </IonSelect>
            </IonItem>
            <IonItem button={true} id="open-date-input">
              <IonLabel>Date</IonLabel>
              <IonText slot="end">
                {displayDate(conferenceDate, 'MMM dd, yyyy')}
              </IonText>
              <IonPopover
                id="date-input-popover"
                trigger="open-date-input"
                showBackdrop={false}
                side="top"
                alignment="end"
              >
                <IonDatetime
                  max="2056"
                  value={conferenceDate}
                  onIonChange={(e) =>
                    setConferenceDate(e.detail.value! as string)
                  }
                  presentation="date"
                ></IonDatetime>
              </IonPopover>
            </IonItem>
          </IonList>

          <h3 className="ion-padding-top ion-padding-start">Internet</h3>

          <IonList lines="none">
            <IonItem>
              <IonLabel>Wifi network</IonLabel>
              <IonLabel className="ion-text-end">
                ica{displayDate(conferenceDate, 'y')}
              </IonLabel>
            </IonItem>
            <IonItem>
              <IonLabel>Password</IonLabel>
              <IonLabel className="ion-text-end">makegoodthings</IonLabel>
            </IonItem>
          </IonList>
        </div>
      </IonContent>

      <IonPopover
        isOpen={showPopover}
        event={popoverEvent}
        onDidDismiss={() => setShowPopover(false)}
      >
        <AboutPopover dismiss={() => setShowPopover(false)} />
      </IonPopover>
    </IonPage>
  );
};

export default React.memo(About);