metadata: Move file info and format to metadata

src/metadata/file.rs

@@ -0,0 +1,38 @@
+use crate::deps::*;
+
+pub struct FileInfo {
+    pub(super) display_name: glib::GString,
+    pub(super) file_size: Option<u64>,
+    pub(super) mime_type: Option<glib::GString>,
+    pub(super) created: Option<glib::DateTime>,
+    pub(super) modified: Option<glib::DateTime>,
+}
+
+impl FileInfo {
+    pub async fn new(file: &gio::File) -> anyhow::Result<Self> {
+        let file_info = crate::util::query_attributes_future(
+            file,
+            vec![
+                gio::FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
+                gio::FILE_ATTRIBUTE_STANDARD_SIZE,
+                gio::FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
+                gio::FILE_ATTRIBUTE_TIME_CREATED,
+                gio::FILE_ATTRIBUTE_TIME_MODIFIED,
+            ],
+        )
+        .await?;
+
+        let size = file_info.size();
+        let file_size = if size > 0 { Some(size as u64) } else { None };
+
+        Ok(Self {
+            display_name: file_info.display_name(),
+            file_size,
+            mime_type: file_info
+                .content_type()
+                .and_then(|x| gio::content_type_get_mime_type(&x)),
+            created: file_info.creation_date_time(),
+            modified: file_info.modification_date_time(),
+        })
+    }
+}