2023-01-12 09:48:39 +00:00
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import { useMemo } from "react";
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import { useSelector } from "react-redux"
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2023-01-17 10:47:00 +00:00
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import { HexKey, RawEvent } from "../nostr";
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2023-01-12 09:48:39 +00:00
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import ProfileImage from "../element/ProfileImage";
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import { hexToBech32 } from "../Util";
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2023-01-17 10:47:00 +00:00
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type DmChat = {
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pubkey: HexKey,
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unreadMessages: number,
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newestMessage: number
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}
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2023-01-12 09:48:39 +00:00
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export default function MessagesPage() {
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2023-01-17 10:47:00 +00:00
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const myPubKey = useSelector<any, string>(s => s.login.publicKey);
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2023-01-12 09:48:39 +00:00
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const dms = useSelector<any, RawEvent[]>(s => s.login.dms);
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2023-01-17 10:47:00 +00:00
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const chats = useMemo(() => {
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return extractChats(dms, myPubKey);
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2023-01-12 09:48:39 +00:00
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}, [dms]);
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2023-01-17 10:47:00 +00:00
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function person(chat: DmChat) {
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2023-01-12 09:48:39 +00:00
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return (
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2023-01-17 10:47:00 +00:00
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<div className="flex mb10" key={chat.pubkey}>
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<ProfileImage pubkey={chat.pubkey} className="f-grow" link={`/messages/${hexToBech32("npub", chat.pubkey)}`} />
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2023-01-12 09:48:39 +00:00
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<span className="pill">
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2023-01-17 10:47:00 +00:00
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{chat.unreadMessages}
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2023-01-12 09:48:39 +00:00
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</span>
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</div>
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)
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}
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return (
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<>
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<h3>Messages</h3>
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2023-01-17 10:47:00 +00:00
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{chats.sort((a, b) => b.newestMessage - a.newestMessage).map(person)}
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2023-01-12 09:48:39 +00:00
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</>
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)
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2023-01-17 10:47:00 +00:00
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}
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export function lastReadDm(pk: HexKey) {
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let k = `dm:seen:${pk}`;
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return parseInt(window.localStorage.getItem(k) ?? "0");
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}
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export function setLastReadDm(pk: HexKey) {
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const now = Math.floor(new Date().getTime() / 1000);
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let current = lastReadDm(pk);
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if (current >= now) {
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return;
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}
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let k = `dm:seen:${pk}`;
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window.localStorage.setItem(k, now.toString());
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}
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2023-01-17 11:30:42 +00:00
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export function isToSelf(e: RawEvent, pk: HexKey) {
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return e.pubkey === pk && e.tags.some(a => a[0] === "p" && a[1] === pk);
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}
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export function dmsInChat(dms: RawEvent[], pk: HexKey) {
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return dms.filter(a => a.pubkey === pk || a.tags.some(b => b[0] === "p" && b[1] === pk));
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}
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2023-01-17 10:47:00 +00:00
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export function totalUnread(dms: RawEvent[], myPubKey: HexKey) {
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return extractChats(dms, myPubKey).reduce((acc, v) => acc += v.unreadMessages, 0);
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}
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function unreadDms(dms: RawEvent[], myPubKey: HexKey, pk: HexKey) {
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if (pk === myPubKey) return 0;
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let lastRead = lastReadDm(pk);
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2023-01-17 11:30:42 +00:00
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return dmsInChat(dms, pk).filter(a => a.created_at >= lastRead && a.pubkey !== myPubKey).length;
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}
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function newestMessage(dms: RawEvent[], myPubKey: HexKey, pk: HexKey) {
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2023-01-17 11:30:42 +00:00
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return dmsInChat(dms, pk).reduce((acc, v) => acc = v.created_at > acc ? v.created_at : acc, 0);
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2023-01-17 10:47:00 +00:00
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}
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export function extractChats(dms: RawEvent[], myPubKey: HexKey) {
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const keys = dms.map(a => [a.pubkey, ...a.tags.filter(b => b[0] === "p").map(b => b[1])]).flat();
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const filteredKeys = Array.from(new Set<string>(keys));
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return filteredKeys.map(a => {
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return {
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pubkey: a,
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unreadMessages: unreadDms(dms, myPubKey, a),
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newestMessage: newestMessage(dms, myPubKey, a)
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} as DmChat;
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})
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2023-01-12 09:48:39 +00:00
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}
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