add globals iterators/getters for admin query cmd, improve structure a bit

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

src/service/admin/query/globals.rs

@@ -0,0 +1,96 @@
+use clap::Subcommand;
+use ruma::{events::room::message::RoomMessageEventContent, ServerName};
+
+use crate::{services, Result};
+
+#[cfg_attr(test, derive(Debug))]
+#[derive(Subcommand)]
+/// All the getters and iterators from src/database/key_value/globals.rs
+pub(crate) enum Globals {
+	DatabaseVersion,
+
+	CurrentCount,
+
+	LastCheckForUpdatesId,
+
+	LoadKeypair,
+
+	/// - This returns an empty `Ok(BTreeMap<..>)` when there are no keys found
+	///   for the server.
+	SigningKeysFor {
+		origin: Box<ServerName>,
+	},
+}
+
+/// All the getters and iterators from src/database/key_value/globals.rs
+pub(crate) async fn globals(subcommand: Globals) -> Result<RoomMessageEventContent> {
+	match subcommand {
+		Globals::DatabaseVersion => {
+			let timer = tokio::time::Instant::now();
+			let results = services().globals.db.database_version();
+			let query_time = timer.elapsed();
+
+			Ok(RoomMessageEventContent::text_html(
+				format!("Query completed in {query_time:?}:\n\n```\n{:?}```", results),
+				format!(
+					"<p>Query completed in {query_time:?}:</p>\n<pre><code>{:?}\n</code></pre>",
+					results
+				),
+			))
+		},
+		Globals::CurrentCount => {
+			let timer = tokio::time::Instant::now();
+			let results = services().globals.db.current_count();
+			let query_time = timer.elapsed();
+
+			Ok(RoomMessageEventContent::text_html(
+				format!("Query completed in {query_time:?}:\n\n```\n{:?}```", results),
+				format!(
+					"<p>Query completed in {query_time:?}:</p>\n<pre><code>{:?}\n</code></pre>",
+					results
+				),
+			))
+		},
+		Globals::LastCheckForUpdatesId => {
+			let timer = tokio::time::Instant::now();
+			let results = services().globals.db.last_check_for_updates_id();
+			let query_time = timer.elapsed();
+
+			Ok(RoomMessageEventContent::text_html(
+				format!("Query completed in {query_time:?}:\n\n```\n{:?}```", results),
+				format!(
+					"<p>Query completed in {query_time:?}:</p>\n<pre><code>{:?}\n</code></pre>",
+					results
+				),
+			))
+		},
+		Globals::LoadKeypair => {
+			let timer = tokio::time::Instant::now();
+			let results = services().globals.db.load_keypair();
+			let query_time = timer.elapsed();
+
+			Ok(RoomMessageEventContent::text_html(
+				format!("Query completed in {query_time:?}:\n\n```\n{:?}```", results),
+				format!(
+					"<p>Query completed in {query_time:?}:</p>\n<pre><code>{:?}\n</code></pre>",
+					results
+				),
+			))
+		},
+		Globals::SigningKeysFor {
+			origin,
+		} => {
+			let timer = tokio::time::Instant::now();
+			let results = services().globals.db.signing_keys_for(&origin);
+			let query_time = timer.elapsed();
+
+			Ok(RoomMessageEventContent::text_html(
+				format!("Query completed in {query_time:?}:\n\n```\n{:?}```", results),
+				format!(
+					"<p>Query completed in {query_time:?}:</p>\n<pre><code>{:?}\n</code></pre>",
+					results
+				),
+			))
+		},
+	}
+}