add interface to get file metadata w/ admin command

Signed-off-by: Jason Volk <jason@zemos.net>

src/admin/media/commands.rs

@@ -257,3 +257,11 @@ pub(super) async fn delete_all_from_server(
 		"Deleted {deleted_count} total files.",
 	)))
 }
+
+#[admin_command]
+pub(super) async fn get_file_info(&self, mxc: OwnedMxcUri) -> Result<RoomMessageEventContent> {
+	let mxc: Mxc<'_> = mxc.as_str().try_into()?;
+	let metadata = self.services.media.get_metadata(&mxc);
+
+	Ok(RoomMessageEventContent::notice_markdown(format!("```\n{metadata:#?}\n```")))
+}

src/admin/media/mod.rs

@@ -2,7 +2,7 @@ mod commands;
 
 use clap::Subcommand;
 use conduit::Result;
-use ruma::{EventId, MxcUri, ServerName};
+use ruma::{EventId, MxcUri, OwnedMxcUri, ServerName};
 
 use crate::admin_command_dispatch;
 
@@ -55,4 +55,9 @@ pub(super) enum MediaCommand {
 		#[arg(short, long)]
 		force: bool,
 	},
+
+	GetFileInfo {
+		/// The MXC URL to lookup info for.
+		mxc: OwnedMxcUri,
+	},
 }

src/service/media/mod.rs

@@ -31,7 +31,7 @@ pub struct FileMeta {
 
 pub struct Service {
 	url_preview_mutex: MutexMap<String, ()>,
-	pub(crate) db: Data,
+	pub(super) db: Data,
 	services: Services,
 }
 
@@ -347,6 +347,18 @@ impl Service {
 		Ok(file)
 	}
 
+	#[inline]
+	pub fn get_metadata(&self, mxc: &Mxc<'_>) -> Option<FileMeta> {
+		self.db
+			.search_file_metadata(mxc, 0, 0)
+			.map(|metadata| FileMeta {
+				content_disposition: metadata.content_disposition,
+				content_type: metadata.content_type,
+				content: None,
+			})
+			.ok()
+	}
+
 	#[inline]
 	#[must_use]
 	pub fn get_media_file(&self, key: &[u8]) -> PathBuf { self.get_media_file_sha256(key) }