infoscreen/src/components/Calendar.tsx
2022-01-03 00:03:53 +01:00

121 lines
4.5 KiB
TypeScript

import * as React from "react"
import { dowToString } from "../lib/utils";
import type { Event, SecretsCalendar } from "../lib/interfaces";
import * as styles from "../styles/containers/Calendar.module.css"
const CALENDAR_REFRESH_INTERVAL = 15 * 60 * 1000;
const CALENDAR_TOKEN_REFRESH_INTERVAL = 45 * 60 * 1000;
function daysDifference(date1: Date, date2: Date) {
if (date1.getTime() > date2.getTime()) {
let tmp = date2;
date2 = date1;
date1 = tmp;
}
return Math.ceil((date2.getTime() - date1.getTime()) / 1000 / 60 / 60 / 24);
}
const Calendar = ({ secrets }: { secrets: SecretsCalendar }) => {
const [token, setToken] = React.useState("")
const [events, setEvents] = React.useState([])
React.useEffect(() => {
requestToken().then(pullCalendar)
const calendarInterval = setInterval(pullCalendar, CALENDAR_REFRESH_INTERVAL);
const calendarTokenInterval = setInterval(requestToken, CALENDAR_TOKEN_REFRESH_INTERVAL);
return () => {
clearInterval(calendarInterval);
clearInterval(calendarTokenInterval);
}
}, [])
const processEventData = (events: Event[]) => {
const eventTable = [];
let lastDate = "";
let i = 0;
for (const event of events) {
const startDate = new Date(event.start.date ? event.start.date : event.start.dateTime)
const startDateString = `${startDate.getFullYear()}${startDate.getMonth()}${startDate.getDate()}`
if (startDateString !== lastDate) {
lastDate = startDateString;
const dayDiff = daysDifference(new Date(), startDate);
let dayDiffString: string;
switch (dayDiff) {
case 0: dayDiffString = "Heute"
break;
case 1: dayDiffString = "Morgen"
break;
default: dayDiffString = `${dayDiff} Tage`;
break;
}
eventTable.push(
<tr key={startDateString}><td colSpan={2} className={styles.calendarDateHeader}>
{dowToString(startDate.getDay())}, {startDate.getDate()}. {startDate.getMonth() + 1}
<span className={styles.calendarDateHeaderSub}>({dayDiffString})</span>
</td></tr>
);
}
if (event.start.date) {
eventTable.push(
<tr key={++i} className={styles.calendarEntry}><td colSpan={2}>{event.summary}</td></tr>
);
} else {
eventTable.push(
<tr key={++i} className={styles.calendarEntry}>
<td>{event.summary}</td>
<td>{startDate.getHours()}:{startDate.getMinutes().toString().padStart(2, "0")}</td>
</tr>
)
}
}
return eventTable;
}
const requestToken = async () => {
const response = await fetch("https://accounts.google.com/o/oauth2/token", {
method: "POST",
body: JSON.stringify({
grant_type: "refresh_token",
refresh_token: secrets.refreshToken,
client_id: secrets.clientId,
clientSecret: secrets.clientSecret
})
});
const token = await response.json();
setToken(token.access_token);
return token.access_token;
}
const pullCalendar = async (provToken: string) => {
const correctToken = provToken || token;
if (!correctToken || correctToken === "") return;
const timeMin = new Date();
timeMin.setHours(timeMin.getHours() - 1);
const params = new URLSearchParams({
orderBy: "startTime",
fields: "items(creator,start,summary)",
singleEvents: "true",
maxResults: "10",
timeMin: timeMin.toISOString(),
key: (secrets.apiKey as string)
});
const response = await fetch(`https://www.googleapis.com/calendar/v3/calendars/${secrets.calendarId}/events?${params.toString()}`, {
headers: { Authorization: `Bearer ${correctToken}` }
});
const events = await response.json();
setEvents(processEventData(events.items));
}
return <div className={`container ${styles.container}`}>
<table><tbody>
{events}
</tbody></table>
</div>
}
export default Calendar;