Move FileId out of SpotifyId

core/src/file_id.rs

@@ -0,0 +1,55 @@
+use librespot_protocol as protocol;
+
+use std::fmt;
+
+use crate::spotify_id::to_base16;
+
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct FileId(pub [u8; 20]);
+
+impl FileId {
+    pub fn from_raw(src: &[u8]) -> FileId {
+        let mut dst = [0u8; 20];
+        dst.clone_from_slice(src);
+        FileId(dst)
+    }
+
+    pub fn to_base16(&self) -> String {
+        to_base16(&self.0, &mut [0u8; 40])
+    }
+}
+
+impl fmt::Debug for FileId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_tuple("FileId").field(&self.to_base16()).finish()
+    }
+}
+
+impl fmt::Display for FileId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.write_str(&self.to_base16())
+    }
+}
+
+impl From<&[u8]> for FileId {
+    fn from(src: &[u8]) -> Self {
+        Self::from_raw(src)
+    }
+}
+impl From<&protocol::metadata::Image> for FileId {
+    fn from(image: &protocol::metadata::Image) -> Self {
+        Self::from(image.get_file_id())
+    }
+}
+
+impl From<&protocol::metadata::AudioFile> for FileId {
+    fn from(file: &protocol::metadata::AudioFile) -> Self {
+        Self::from(file.get_file_id())
+    }
+}
+
+impl From<&protocol::metadata::VideoFile> for FileId {
+    fn from(video: &protocol::metadata::VideoFile) -> Self {
+        Self::from(video.get_file_id())
+    }
+}