adminroom: cmds to view room topic and room members

this will be extended more

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/admin/room/room_info_commands.rs

@@ -0,0 +1,93 @@
+use std::fmt::Write;
+
+use ruma::{events::room::message::RoomMessageEventContent, RoomId};
+use service::services;
+
+use super::RoomInfoCommand;
+use crate::{escape_html, Result};
+
+pub(crate) async fn process(command: RoomInfoCommand, body: Vec<&str>) -> Result<RoomMessageEventContent> {
+	match command {
+		RoomInfoCommand::ListJoinedMembers {
+			room_id,
+		} => list_joined_members(body, room_id).await,
+		RoomInfoCommand::ViewRoomTopic {
+			room_id,
+		} => view_room_topic(body, room_id).await,
+	}
+}
+
+async fn list_joined_members(_body: Vec<&str>, room_id: Box<RoomId>) -> Result<RoomMessageEventContent> {
+	let room_name = services()
+		.rooms
+		.state_accessor
+		.get_name(&room_id)
+		.ok()
+		.flatten()
+		.unwrap_or_else(|| room_id.to_string());
+
+	let members = services()
+		.rooms
+		.state_cache
+		.room_members(&room_id)
+		.filter_map(Result::ok);
+
+	let member_info = members
+		.into_iter()
+		.map(|user_id| {
+			(
+				user_id.clone(),
+				services()
+					.users
+					.displayname(&user_id)
+					.unwrap_or(None)
+					.unwrap_or_else(|| user_id.to_string()),
+			)
+		})
+		.collect::<Vec<_>>();
+
+	let output_plain = format!(
+		"{} Members in Room \"{}\":\n```\n{}\n```",
+		member_info.len(),
+		room_name,
+		member_info
+			.iter()
+			.map(|(mxid, displayname)| format!("{mxid} | {displayname}"))
+			.collect::<Vec<_>>()
+			.join("\n")
+	);
+
+	let output_html = format!(
+		"<table><caption>{} Members in Room \"{}\" </caption>\n<tr><th>MXID</th>\t<th>Display \
+		 Name</th></tr>\n{}</table>",
+		member_info.len(),
+		room_name,
+		member_info
+			.iter()
+			.fold(String::new(), |mut output, (mxid, displayname)| {
+				writeln!(
+					output,
+					"<tr><td>{}</td>\t<td>{}</td></tr>",
+					mxid,
+					escape_html(displayname.as_ref())
+				)
+				.expect("should be able to write to string buffer");
+				output
+			})
+	);
+
+	Ok(RoomMessageEventContent::text_html(output_plain, output_html))
+}
+
+async fn view_room_topic(_body: Vec<&str>, room_id: Box<RoomId>) -> Result<RoomMessageEventContent> {
+	let Some(room_topic) = services().rooms.state_accessor.get_room_topic(&room_id)? else {
+		return Ok(RoomMessageEventContent::text_plain("Room does not have a room topic set."));
+	};
+
+	let output_html = format!("<p>Room topic:</p>\n<hr>\n{}<hr>", escape_html(&room_topic));
+
+	Ok(RoomMessageEventContent::text_html(
+		format!("Room topic:\n\n```{room_topic}\n```"),
+		output_html,
+	))
+}