added route /guilds/:id/prune GET count and POST prune.

Edited Member entity to include last_message_id to avoid searching for every members last message when pruning
When a message is sent through /channels/:id/messages last_message_id of sending Member is updated.

api/src/routes/channels/#channel_id/messages/index.ts

@@ -10,7 +10,8 @@ import {
 	getPermission,
 	Message,
 	MessageCreateEvent,
-	uploadFile
+	uploadFile,
+	Member,
 } from "@fosscord/util";
 import { HTTPError } from "lambert-server";
 import { handleMessage, postHandleMessage, route } from "@fosscord/api";
@@ -188,6 +189,13 @@ router.post(
 
 		await channel.assign({ last_message_id: message.id }).save();
 
+		//gosh
+		var member = await Member.findOneOrFail({
+			where: { id: req.user_id },
+		});
+		await member.assign({ last_message_id: message.id })
+		await member.save();	//why does member.assign here return void?
+
 		if (channel.isDm()) {
 			const channel_dto = await DmChannelDTO.from(channel);
 

api/src/routes/guilds/#guild_id/prune.ts

@@ -0,0 +1,74 @@
+import { Router, Request, Response } from "express";
+import { Guild, Member, Snowflake } from "@fosscord/util";
+import { HTTPError } from "lambert-server";
+import { LessThan } from "typeorm";
+import { route } from "@fosscord/api";
+const router = Router();
+
+//Returns all inactive members, respecting role hierarchy
+export const inactiveMembers = async (guild_id: string, user_id: string, days: number, roles: string[] = []) => {
+	var date = new Date();
+	date.setDate(date.getDate() - days);
+	//Snowflake should have `generateFromTime` method? Or similar?
+	var minId = BigInt(date.valueOf() - Snowflake.EPOCH) << BigInt(22);
+
+	var members = await Member.find({
+		where: [
+			{
+				guild_id,
+				last_message_id: LessThan(minId.toString()),
+			},
+		],
+		relations: ["roles"]
+	});
+	if (!members.length) return [];
+
+	//I'm sure I can do this in the above db query ( and it would probably be better to do so ), but oh well.
+	if (roles.length && members.length)
+		members = members.filter(user => user.roles?.some(role => roles.includes(role.id)));
+
+	const me = await Member.findOne({ id: user_id, guild_id }, { relations: ["roles"] });
+	if (!me) throw new HTTPError("You are not member of this guild", 403);
+	const myHighestRole = Math.max(...(me.roles?.map(x => x.position) || []))
+
+	const guild = await Guild.findOneOrFail({ where: { id: guild_id } })
+
+	members = members.filter(member =>
+		member.id !== guild.owner_id &&			//can't kick owner
+		member.roles?.some(role =>
+			role.position < myHighestRole ||	//roles higher than me can't be kicked
+			me.id === guild.owner_id			//owner can kick anyone
+		)
+	)
+
+	return members;
+}
+
+router.get("/", async (req: Request, res: Response) => {
+	const days = parseInt(req.query.days as string);
+
+	var roles = req.query.include_roles;
+	if (typeof roles === 'string') roles = [roles]; //express will return array otherwise
+
+	const members = await inactiveMembers(req.params.guild_id, req.user_id, days, roles as string[]);
+
+	res.send({ pruned: members.length });
+});
+
+router.post("/", route({ permission: "KICK_MEMBERS" }), async (req: Request, res: Response) => {
+	const days = parseInt(req.body.days);
+
+	var roles = req.query.include_roles;
+	if (typeof roles === 'string') roles = [roles];
+
+	const { guild_id } = req.params;
+	const members = await inactiveMembers(guild_id, req.user_id, days, roles as string[]);
+
+	for (var curr of members) {
+		await Member.removeFromGuild(curr.id, guild_id);
+	}
+
+	res.send({ purged: members.length });
+})
+
+export default router;

util/src/entities/Member.ts

@@ -84,6 +84,9 @@ export class Member extends BaseClassWithoutId {
 	@Column({ type: "simple-json" })
 	settings: UserGuildSettings;
 
+	@Column()
+	last_message_id: string;
+
 	// TODO: update
 	// @Column({ type: "simple-json" })
 	// read_state: ReadState;
@@ -230,6 +233,7 @@ export class Member extends BaseClassWithoutId {
 			deaf: false,
 			mute: false,
 			pending: false,
+			last_message_id: "",
 		};
 
 		await Promise.all([