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silverbullet/packages/plugs/mattermost/mattermost.ts
2022-04-28 11:55:38 +02:00

125 lines
3.7 KiB
TypeScript

import { Client4 } from "@mattermost/client";
import { applyQuery, QueryProviderEvent } from "../query/engine";
import { readPage } from "@silverbulletmd/plugos-silverbullet-syscall/space";
import { parseMarkdown } from "@silverbulletmd/plugos-silverbullet-syscall/markdown";
import { extractMeta } from "../query/data";
import { niceDate } from "../core/dates";
import { Post } from "@mattermost/types/lib/posts";
import { ServerChannel } from "@mattermost/types/lib/channels";
import { UserProfile } from "@mattermost/types/lib/users";
import { Team } from "@mattermost/types/lib/teams";
type AugmentedPost = Post & {
// Dates we can use to filter
createdAt: string;
updatedAt: string;
editedAt: string;
};
// https://community.mattermost.com/private-core/pl/rbp7a7jtr3f89nzsefo6ftqt3o
function mattermostDesktopUrlForPost(
url: string,
teamName: string,
postId: string
) {
return `${url.replace("https://", "mattermost://")}/${teamName}/pl/${postId}`;
}
type MattermostConfig = {
url: string;
token: string;
defaultTeam: string;
};
async function getConfig(): Promise<MattermostConfig> {
let { text } = await readPage("mattermost-config");
let parsedContent = await parseMarkdown(text);
let pageMeta = await extractMeta(parsedContent);
return pageMeta as MattermostConfig;
}
function augmentPost(post: AugmentedPost) {
if (post.create_at) {
post.createdAt = niceDate(new Date(post.create_at));
}
if (post.update_at) {
post.updatedAt = niceDate(new Date(post.update_at));
}
if (post.edit_at) {
post.editedAt = niceDate(new Date(post.edit_at));
}
}
class CachingClient4 {
constructor(public client: Client4) {}
private channelCache = new Map<string, ServerChannel>();
async getChannelCached(channelId: string): Promise<ServerChannel> {
let channel = this.channelCache.get(channelId);
if (channel) {
return channel;
}
channel = await this.client.getChannel(channelId);
this.channelCache.set(channelId, channel!);
return channel!;
}
private teamCache = new Map<string, Team>();
async getTeamCached(teamId: string): Promise<Team> {
let team = this.teamCache.get(teamId);
if (team) {
return team;
}
team = await this.client.getTeam(teamId);
this.teamCache.set(teamId, team!);
return team!;
}
private userCache = new Map<string, UserProfile>();
async getUserCached(userId: string): Promise<UserProfile> {
let user = this.userCache.get(userId);
if (user) {
return user;
}
user = await this.client.getUser(userId);
this.userCache.set(userId, user!);
return user!;
}
}
export async function savedPostsQueryProvider({
query,
}: QueryProviderEvent): Promise<any[]> {
let config = await getConfig();
let client = new Client4();
let cachingClient = new CachingClient4(client);
client.setUrl(config.url);
client.setToken(config.token);
let me = await client.getMe();
let postCollection = await client.getFlaggedPosts(me.id);
let savedPosts: AugmentedPost[] = [];
for (let order of postCollection.order) {
let post = postCollection.posts[order];
augmentPost(post);
savedPosts.push(post);
}
let resultSavedPosts = [];
savedPosts = applyQuery(query, savedPosts);
for (let savedPost of savedPosts) {
let channel = await cachingClient.getChannelCached(savedPost.channel_id);
let teamName = config.defaultTeam;
if (channel.team_id) {
let team = await cachingClient.getTeamCached(channel.team_id);
teamName = team.name;
}
resultSavedPosts.push({
...savedPost,
user: await cachingClient.getUserCached(savedPost.user_id),
channel: channel,
teamName: teamName,
url: mattermostDesktopUrlForPost(client.url, teamName, savedPost.id),
});
}
return resultSavedPosts;
}