Auto-update fts index

Cargo.lock

@@ -1041,7 +1041,6 @@ dependencies = [
  "pile-toolbox",
  "serde",
  "signal-hook",
- "tantivy",
  "tokio",
  "toml",
  "tracing",
@@ -1084,8 +1083,11 @@ dependencies = [
  "jsonpath-rust",
  "pile-audio",
  "pile-config",
+ "pile-toolbox",
  "serde_json",
  "tantivy",
+ "thiserror",
+ "toml",
  "tracing",
  "walkdir",
 ]

Cargo.toml

@@ -42,7 +42,7 @@ str_to_string = "deny"
 string_add = "deny"
 implicit_clone = "deny"
 use_debug = "allow"
-verbose_file_reads = "deny"
+verbose_file_reads = "allow"
 large_types_passed_by_value = "deny"
 wildcard_dependencies = "deny"
 negative_feature_names = "deny"
@@ -58,7 +58,6 @@ unwrap_used = "warn"
 expect_used = "warn"
 type_complexity = "allow"
 
-
 #
 # MARK: dependencies
 #

crates/pile-audio/src/common/picturetype.rs

@@ -17,7 +17,7 @@ impl Display for PictureTypeError {
 impl std::error::Error for PictureTypeError {}
 
 /// A picture type according to the ID3v2 APIC frame
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum PictureType {
 	Other,

crates/pile-audio/src/common/vorbiscomment.rs

@@ -13,7 +13,7 @@ use crate::flac::blocks::{FlacMetablockDecode, FlacMetablockEncode, FlacPictureB
 use super::tagtype::TagType;
 
 #[derive(Debug)]
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 pub enum VorbisCommentDecodeError {
 	/// We encountered an IoError while processing a block
 	IoError(std::io::Error),
@@ -74,7 +74,7 @@ impl From<FromUtf8Error> for VorbisCommentDecodeError {
 }
 
 #[derive(Debug)]
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 pub enum VorbisCommentEncodeError {
 	/// We encountered an IoError while processing a block
 	IoError(std::io::Error),
@@ -132,39 +132,52 @@ impl VorbisComment {
 		let mut block = [0u8; 4];
 
 		let vendor = {
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut block)
-				.map_err(|_| VorbisCommentDecodeError::MalformedData)?;
+				.map_err(|_err| VorbisCommentDecodeError::MalformedData)?;
 
 			let length = u32::from_le_bytes(block);
-			let mut text = vec![0u8; length.try_into().unwrap()];
 
-			#[expect(clippy::map_err_ignore)]
+			#[expect(clippy::expect_used)]
+			let mut text = vec![
+				0u8;
+				length
+					.try_into()
+					.expect("vendor length does not fit into usize")
+			];
+
 			d.read_exact(&mut text)
-				.map_err(|_| VorbisCommentDecodeError::MalformedData)?;
+				.map_err(|_err| VorbisCommentDecodeError::MalformedData)?;
 
 			String::from_utf8(text)?
 		};
 
-		#[expect(clippy::map_err_ignore)]
 		d.read_exact(&mut block)
-			.map_err(|_| VorbisCommentDecodeError::MalformedData)?;
-		let n_comments: usize = u32::from_le_bytes(block).try_into().unwrap();
+			.map_err(|_err| VorbisCommentDecodeError::MalformedData)?;
+
+		#[expect(clippy::expect_used)]
+		let n_comments: usize = u32::from_le_bytes(block)
+			.try_into()
+			.expect("comment count does not fit into usize");
 
 		let mut comments = Vec::new();
 		let mut pictures = Vec::new();
 		for _ in 0..n_comments {
 			let comment = {
-				#[expect(clippy::map_err_ignore)]
 				d.read_exact(&mut block)
-					.map_err(|_| VorbisCommentDecodeError::MalformedData)?;
+					.map_err(|_err| VorbisCommentDecodeError::MalformedData)?;
 
 				let length = u32::from_le_bytes(block);
-				let mut text = vec![0u8; length.try_into().unwrap()];
 
-				#[expect(clippy::map_err_ignore)]
+				#[expect(clippy::expect_used)]
+				let mut text = vec![
+					0u8;
+					length
+						.try_into()
+						.expect("comment length does not fit into usize")
+				];
+
 				d.read_exact(&mut text)
-					.map_err(|_| VorbisCommentDecodeError::MalformedData)?;
+					.map_err(|_err| VorbisCommentDecodeError::MalformedData)?;
 
 				String::from_utf8(text)?
 			};
@@ -218,9 +231,10 @@ impl VorbisComment {
 
 impl VorbisComment {
 	/// Get the number of bytes that `encode()` will write.
+	#[expect(clippy::expect_used)]
 	pub fn get_len(&self) -> u32 {
 		let mut sum: u32 = 0;
-		sum += u32::try_from(self.vendor.len()).unwrap() + 4;
+		sum += u32::try_from(self.vendor.len()).expect("vendor length does not fit into u32") + 4;
 		sum += 4;
 
 		for (tagtype, value) in &self.comments {
@@ -244,7 +258,8 @@ impl VorbisComment {
 			.to_uppercase();
 
 			let str = format!("{tagtype_str}={value}");
-			sum += 4 + u32::try_from(str.len()).unwrap();
+			sum +=
+				4 + u32::try_from(str.len()).expect("comment string length does not fit into u32");
 		}
 
 		for p in &self.pictures {
@@ -271,13 +286,18 @@ impl VorbisComment {
 	}
 
 	/// Try to encode this vorbis comment
+	#[expect(clippy::expect_used)]
 	pub fn encode(&self, target: &mut impl Write) -> Result<(), VorbisCommentEncodeError> {
-		target.write_all(&u32::try_from(self.vendor.len()).unwrap().to_le_bytes())?;
+		target.write_all(
+			&u32::try_from(self.vendor.len())
+				.expect("vendor length does not fit into u32")
+				.to_le_bytes(),
+		)?;
 		target.write_all(self.vendor.as_bytes())?;
 
 		target.write_all(
 			&u32::try_from(self.comments.len() + self.pictures.len())
-				.unwrap()
+				.expect("total comment count does not fit into u32")
 				.to_le_bytes(),
 		)?;
 
@@ -302,7 +322,11 @@ impl VorbisComment {
 			.to_uppercase();
 
 			let str = format!("{tagtype_str}={value}");
-			target.write_all(&u32::try_from(str.len()).unwrap().to_le_bytes())?;
+			target.write_all(
+				&u32::try_from(str.len())
+					.expect("comment string length does not fit into u32")
+					.to_le_bytes(),
+			)?;
 			target.write_all(str.as_bytes())?;
 		}
 
@@ -318,7 +342,11 @@ impl VorbisComment {
 				&base64::prelude::BASE64_STANDARD.encode(&pic_data)
 			);
 
-			target.write_all(&u32::try_from(pic_string.len()).unwrap().to_le_bytes())?;
+			target.write_all(
+				&u32::try_from(pic_string.len())
+					.expect("picture string length does not fit into u32")
+					.to_le_bytes(),
+			)?;
 			target.write_all(pic_string.as_bytes())?;
 		}
 

crates/pile-audio/src/flac/blockread.rs

@@ -88,7 +88,7 @@ enum FlacBlockType {
 }
 
 #[derive(Debug)]
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 pub enum FlacBlock {
 	Streaminfo(FlacStreaminfoBlock),
 	Picture(FlacPictureBlock),
@@ -212,9 +212,16 @@ impl FlacBlockReader {
 		}
 
 		'outer: while last_read_size != 0 {
-			match self.current_block.as_mut().unwrap() {
+			#[expect(clippy::expect_used)]
+			match self
+				.current_block
+				.as_mut()
+				.expect("current_block is Some, checked above")
+			{
 				FlacBlockType::MagicBits { data, left_to_read } => {
-					last_read_size = buf.read(&mut data[4 - *left_to_read..4]).unwrap();
+					last_read_size = buf
+						.read(&mut data[4 - *left_to_read..4])
+						.map_err(FlacDecodeError::from)?;
 					*left_to_read -= last_read_size;
 
 					if *left_to_read == 0 {
@@ -235,7 +242,9 @@ impl FlacBlockReader {
 					data,
 					left_to_read,
 				} => {
-					last_read_size = buf.read(&mut data[4 - *left_to_read..4]).unwrap();
+					last_read_size = buf
+						.read(&mut data[4 - *left_to_read..4])
+						.map_err(FlacDecodeError::from)?;
 					*left_to_read -= last_read_size;
 
 					if *left_to_read == 0 {
@@ -253,13 +262,24 @@ impl FlacBlockReader {
 				}
 
 				FlacBlockType::MetaBlock { header, data } => {
+					#[expect(clippy::expect_used)]
+					{
 						last_read_size = buf
 							.by_ref()
-						.take(u64::from(header.length) - u64::try_from(data.len()).unwrap())
+							.take(
+								u64::from(header.length)
+									- u64::try_from(data.len())
+										.expect("data length does not fit into u64"),
+							)
 							.read_to_end(data)
-						.unwrap();
+							.map_err(FlacDecodeError::from)?;
+					}
 
-					if data.len() == usize::try_from(header.length).unwrap() {
+					#[expect(clippy::expect_used)]
+					if data.len()
+						== usize::try_from(header.length)
+							.expect("header length does not fit into usize")
+					{
 						// If we picked this block type, add it to the queue
 						if self.selector.should_pick_meta(header.block_type) {
 							let b = FlacBlock::decode(header.block_type, data)?;
@@ -283,7 +303,11 @@ impl FlacBlockReader {
 					// Limit the number of bytes we read at once, so we don't re-clone
 					// large amounts of data if `buf` contains multiple sync sequences.
 					// 5kb is a pretty reasonable frame size.
-					last_read_size = buf.by_ref().take(5_000).read_to_end(data).unwrap();
+					last_read_size = buf
+						.by_ref()
+						.take(5_000)
+						.read_to_end(data)
+						.map_err(FlacDecodeError::from)?;
 					if last_read_size == 0 {
 						continue 'outer;
 					}
@@ -335,9 +359,10 @@ impl FlacBlockReader {
 
 								// Backtrack to the first bit AFTER this new sync sequence
 								buf.seek(std::io::SeekFrom::Current(
-									-i64::try_from(data.len() - i).unwrap(),
+									-i64::try_from(data.len() - i)
+										.expect("seek offset does not fit into i64"),
 								))
-								.unwrap();
+								.map_err(FlacDecodeError::from)?;
 
 								self.current_block = Some(FlacBlockType::AudioData {
 									data: {
@@ -406,6 +431,7 @@ mod tests {
 		flac::tests::{FlacBlockOutput, FlacTestCase, VorbisCommentTestValue, manifest},
 	};
 
+	#[expect(clippy::unwrap_used)]
 	fn read_file(
 		test_case: &FlacTestCase,
 		fragment_size_range: Option<Range<usize>>,
@@ -447,6 +473,7 @@ mod tests {
 		return Ok(out_blocks);
 	}
 
+	#[expect(clippy::unwrap_used)]
 	fn test_identical(
 		test_case: &FlacTestCase,
 		fragment_size_range: Option<Range<usize>>,

crates/pile-audio/src/flac/blocks/application.rs

@@ -50,8 +50,11 @@ impl FlacMetablockDecode for FlacApplicationBlock {
 }
 
 impl FlacMetablockEncode for FlacApplicationBlock {
+	#[expect(clippy::expect_used)]
 	fn get_len(&self) -> u32 {
-		(self.data.len() + 4).try_into().unwrap()
+		(self.data.len() + 4)
+			.try_into()
+			.expect("application block size does not fit into u32")
 	}
 
 	fn encode(

crates/pile-audio/src/flac/blocks/cuesheet.rs

@@ -25,8 +25,12 @@ impl FlacMetablockDecode for FlacCuesheetBlock {
 }
 
 impl FlacMetablockEncode for FlacCuesheetBlock {
+	#[expect(clippy::expect_used)]
 	fn get_len(&self) -> u32 {
-		self.data.len().try_into().unwrap()
+		self.data
+			.len()
+			.try_into()
+			.expect("cuesheet size does not fit into u32")
 	}
 
 	fn encode(

crates/pile-audio/src/flac/blocks/header.rs

@@ -4,7 +4,7 @@ use std::fmt::Debug;
 use crate::flac::errors::{FlacDecodeError, FlacEncodeError};
 
 /// A type of flac metadata block
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum FlacMetablockType {
 	Streaminfo,

crates/pile-audio/src/flac/blocks/mod.rs

@@ -1,4 +1,4 @@
-//! Read and write impelementations for all flac block types
+//! Read and write implementations for all flac block types
 
 // Not metadata blocks
 mod header;

crates/pile-audio/src/flac/blocks/padding.rs

@@ -12,13 +12,17 @@ pub struct FlacPaddingBlock {
 }
 
 impl FlacMetablockDecode for FlacPaddingBlock {
+	#[expect(clippy::expect_used)]
 	fn decode(data: &[u8]) -> Result<Self, FlacDecodeError> {
 		if data.iter().any(|x| *x != 0u8) {
 			return Err(FlacDecodeError::MalformedBlock);
 		}
 
 		Ok(Self {
-			size: data.len().try_into().unwrap(),
+			size: data
+				.len()
+				.try_into()
+				.expect("padding size does not fit into u32"),
 		})
 	}
 }

crates/pile-audio/src/flac/blocks/picture.rs

@@ -63,16 +63,17 @@ impl FlacMetablockDecode for FlacPictureBlock {
 
 		// Image format
 		let mime = {
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut block)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
-			let mime_length = u32::from_be_bytes(block).try_into().unwrap();
+			#[expect(clippy::expect_used)]
+			let mime_length = u32::from_be_bytes(block)
+				.try_into()
+				.expect("mime length does not fit into usize");
 			let mut mime = vec![0u8; mime_length];
 
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut mime)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
 			String::from_utf8(mime)
 				.ok()
@@ -82,16 +83,17 @@ impl FlacMetablockDecode for FlacPictureBlock {
 
 		// Image description
 		let description = {
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut block)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
-			let desc_length = u32::from_be_bytes(block).try_into().unwrap();
+			#[expect(clippy::expect_used)]
+			let desc_length = u32::from_be_bytes(block)
+				.try_into()
+				.expect("description length does not fit into usize");
 			let mut desc = vec![0u8; desc_length];
 
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut desc)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
 			String::from_utf8(desc)?
 		};
@@ -122,16 +124,17 @@ impl FlacMetablockDecode for FlacPictureBlock {
 
 		// Image data length
 		let img_data = {
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut block)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
-			let data_length = u32::from_be_bytes(block).try_into().unwrap();
+			#[expect(clippy::expect_used)]
+			let data_length = u32::from_be_bytes(block)
+				.try_into()
+				.expect("image data length does not fit into usize");
 			let mut img_data = vec![0u8; data_length];
 
-			#[expect(clippy::map_err_ignore)]
 			d.read_exact(&mut img_data)
-				.map_err(|_| FlacDecodeError::MalformedBlock)?;
+				.map_err(|_err| FlacDecodeError::MalformedBlock)?;
 
 			img_data
 		};
@@ -150,13 +153,14 @@ impl FlacMetablockDecode for FlacPictureBlock {
 }
 
 impl FlacMetablockEncode for FlacPictureBlock {
+	#[expect(clippy::expect_used)]
 	fn get_len(&self) -> u32 {
 		(4 + (4 + self.mime.to_string().len())
 			+ (4 + self.description.len())
 			+ 4 + 4 + 4
 			+ 4 + (4 + self.img_data.len()))
 		.try_into()
-		.unwrap()
+		.expect("picture block size does not fit into u32")
 	}
 
 	fn encode(
@@ -176,12 +180,22 @@ impl FlacMetablockEncode for FlacPictureBlock {
 
 		target.write_all(&self.picture_type.to_idx().to_be_bytes())?;
 
+		#[expect(clippy::expect_used)]
+		{
 			let mime = self.mime.to_string();
-		target.write_all(&u32::try_from(mime.len()).unwrap().to_be_bytes())?;
+			target.write_all(
+				&u32::try_from(mime.len())
+					.expect("mime length does not fit into u32")
+					.to_be_bytes(),
+			)?;
 			target.write_all(self.mime.to_string().as_bytes())?;
 			drop(mime);
 
-		target.write_all(&u32::try_from(self.description.len()).unwrap().to_be_bytes())?;
+			target.write_all(
+				&u32::try_from(self.description.len())
+					.expect("description length does not fit into u32")
+					.to_be_bytes(),
+			)?;
 			target.write_all(self.description.as_bytes())?;
 
 			target.write_all(&self.width.to_be_bytes())?;
@@ -189,7 +203,12 @@ impl FlacMetablockEncode for FlacPictureBlock {
 			target.write_all(&self.bit_depth.to_be_bytes())?;
 			target.write_all(&self.color_count.to_be_bytes())?;
 
-		target.write_all(&u32::try_from(self.img_data.len()).unwrap().to_be_bytes())?;
+			target.write_all(
+				&u32::try_from(self.img_data.len())
+					.expect("image data length does not fit into u32")
+					.to_be_bytes(),
+			)?;
+		}
 		target.write_all(&self.img_data)?;
 
 		return Ok(());

crates/pile-audio/src/flac/blocks/seektable.rs

@@ -25,8 +25,12 @@ impl FlacMetablockDecode for FlacSeektableBlock {
 }
 
 impl FlacMetablockEncode for FlacSeektableBlock {
+	#[expect(clippy::expect_used)]
 	fn get_len(&self) -> u32 {
-		self.data.len().try_into().unwrap()
+		self.data
+			.len()
+			.try_into()
+			.expect("seektable size does not fit into u32")
 	}
 
 	fn encode(

crates/pile-audio/src/flac/errors.rs

@@ -6,7 +6,7 @@ use crate::common::{
 use std::string::FromUtf8Error;
 use thiserror::Error;
 
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 #[derive(Debug, Error)]
 pub enum FlacDecodeError {
 	/// FLAC does not start with 0x66 0x4C 0x61 0x43
@@ -46,7 +46,7 @@ pub enum FlacDecodeError {
 	PictureTypeError(#[from] PictureTypeError),
 }
 
-#[allow(missing_docs)]
+#[expect(missing_docs)]
 #[derive(Debug, Error)]
 pub enum FlacEncodeError {
 	/// We encountered an i/o error while processing

crates/pile-audio/src/flac/mod.rs

@@ -213,6 +213,7 @@ mod tests {
 	}
 
 	/// A list of test files and their expected output
+	#[expect(clippy::unwrap_used)]
 	pub fn manifest() -> [FlacTestCase; 23] {
 		[
 			FlacTestCase::Error {

crates/pile-audio/src/flac/proc/metastrip.rs

@@ -88,7 +88,11 @@ impl FlacMetaStrip {
 		// We don't need to store audioframes in our last_block buffer,
 		// since they do not have an `is_last` flag.
 		if matches!(self.last_block, Some(FlacBlock::AudioFrame(_))) {
-			let x = self.last_block.take().unwrap();
+			#[expect(clippy::expect_used)]
+			let x = self
+				.last_block
+				.take()
+				.expect("last_block is Some(AudioFrame), just matched");
 			x.encode(false, true, target)?;
 		}
 
@@ -107,6 +111,7 @@ mod tests {
 		tests::manifest,
 	};
 
+	#[expect(clippy::unwrap_used)]
 	fn test_strip(
 		test_case: &FlacTestCase,
 		fragment_size_range: Option<std::ops::Range<usize>>,

crates/pile-audio/src/flac/proc/pictures.rs

@@ -90,6 +90,7 @@ mod tests {
 		tests::{FlacBlockOutput, FlacTestCase, manifest},
 	};
 
+	#[expect(clippy::unwrap_used)]
 	fn test_pictures(
 		test_case: &FlacTestCase,
 		fragment_size_range: Option<std::ops::Range<usize>>,

crates/pile-audio/src/nodes/extractcovers.rs

@@ -0,0 +1,112 @@
+use crate::flac::proc::pictures::FlacPictureReader;
+use std::{collections::BTreeMap, sync::Arc};
+use tracing::{debug, trace};
+
+pub struct ExtractCovers {}
+
+impl NodeBuilder for ExtractCovers {
+	fn build<'ctx>(&self) -> Box<dyn Node<'ctx>> {
+		Box::new(Self {})
+	}
+}
+
+// Inputs: "data" - Bytes
+#[async_trait]
+impl<'ctx> Node<'ctx> for ExtractCovers {
+	async fn run(
+		&self,
+		ctx: &CopperContext<'ctx>,
+		this_node: ThisNodeInfo,
+		params: NodeParameters,
+		mut input: BTreeMap<PortName, Option<PipeData>>,
+	) -> Result<BTreeMap<PortName, PipeData>, RunNodeError> {
+		//
+		// Extract parameters
+		//
+		params.err_if_not_empty()?;
+
+		//
+		// Extract arguments
+		//
+		let data = input.remove(&PortName::new("data"));
+		if data.is_none() {
+			return Err(RunNodeError::MissingInput {
+				port: PortName::new("data"),
+			});
+		}
+		if let Some((port, _)) = input.pop_first() {
+			return Err(RunNodeError::UnrecognizedInput { port });
+		}
+
+		trace!(
+			message = "Inputs ready, preparing reader",
+			node_id = ?this_node.id
+		);
+
+		let mut reader = match data.unwrap() {
+			None => {
+				return Err(RunNodeError::RequiredInputNull {
+					port: PortName::new("data"),
+				});
+			}
+
+			Some(PipeData::Blob { source, .. }) => source.build(ctx).await?,
+
+			_ => {
+				return Err(RunNodeError::BadInputType {
+					port: PortName::new("data"),
+				});
+			}
+		};
+
+		//
+		// Setup is done, extract covers
+		//
+		debug!(
+			message = "Extracting covers",
+			node_id = ?this_node.id
+		);
+		let mut picreader = FlacPictureReader::new();
+
+		while let Some(data) = reader.next_fragment().await? {
+			picreader
+				.push_data(&data)
+				.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+		}
+
+		picreader
+			.finish()
+			.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+
+		//
+		// Send the first cover we find
+		//
+
+		let mut output = BTreeMap::new();
+
+		if let Some(picture) = picreader.pop_picture() {
+			debug!(
+				message = "Found a cover, sending",
+				node_id = ?this_node.id,
+				picture = ?picture
+			);
+
+			output.insert(
+				PortName::new("cover_data"),
+				PipeData::Blob {
+					source: BytesProcessorBuilder::new(RawBytesSource::Array {
+						mime: picture.mime.clone(),
+						data: Arc::new(picture.img_data),
+					}),
+				},
+			);
+		} else {
+			debug!(
+				message = "Did not find a cover, sending None",
+				node_id = ?this_node.id
+			);
+		}
+
+		return Ok(output);
+	}
+}

crates/pile-audio/src/nodes/extracttags.rs

@@ -0,0 +1,164 @@
+use crate::{
+	common::tagtype::TagType,
+	flac::blockread::{FlacBlock, FlacBlockReader, FlacBlockSelector},
+};
+use async_trait::async_trait;
+use copper_piper::{
+	base::{Node, NodeBuilder, NodeParameterValue, PortName, RunNodeError, ThisNodeInfo},
+	data::PipeData,
+	helpers::NodeParameters,
+	CopperContext,
+};
+use std::{collections::BTreeMap, sync::Arc};
+use tracing::{debug, trace};
+
+/// Extract tags from audio metadata
+pub struct ExtractTags {}
+
+impl NodeBuilder for ExtractTags {
+	fn build<'ctx>(&self) -> Box<dyn Node<'ctx>> {
+		Box::new(Self {})
+	}
+}
+
+// Inputs: "data" - Bytes
+// Outputs: variable, depends on tags
+#[async_trait]
+impl<'ctx> Node<'ctx> for ExtractTags {
+	async fn run(
+		&self,
+		ctx: &CopperContext<'ctx>,
+		this_node: ThisNodeInfo,
+		mut params: NodeParameters,
+		mut input: BTreeMap<PortName, Option<PipeData>>,
+	) -> Result<BTreeMap<PortName, PipeData>, RunNodeError> {
+		//
+		// Extract parameters
+		//
+
+		let tags = {
+			let mut tags: BTreeMap<PortName, TagType> = BTreeMap::new();
+			let val = params.pop_val("tags")?;
+
+			match val {
+				NodeParameterValue::List(list) => {
+					for t in list {
+						match t {
+							NodeParameterValue::String(s) => {
+								tags.insert(PortName::new(s.as_str()), s.as_str().into());
+							}
+							_ => {
+								return Err(RunNodeError::BadParameterType {
+									parameter: "tags".into(),
+								})
+							}
+						}
+					}
+				}
+				_ => {
+					return Err(RunNodeError::BadParameterType {
+						parameter: "tags".into(),
+					})
+				}
+			};
+
+			tags
+		};
+
+		params.err_if_not_empty()?;
+
+		//
+		// Extract arguments
+		//
+		let data = input.remove(&PortName::new("data"));
+		if data.is_none() {
+			return Err(RunNodeError::MissingInput {
+				port: PortName::new("data"),
+			});
+		}
+		if let Some((port, _)) = input.pop_first() {
+			return Err(RunNodeError::UnrecognizedInput { port });
+		}
+
+		trace!(
+			message = "Inputs ready, preparing reader",
+			node_id = ?this_node.id
+		);
+
+		let mut reader = match data.unwrap() {
+			None => {
+				return Err(RunNodeError::RequiredInputNull {
+					port: PortName::new("data"),
+				})
+			}
+
+			Some(PipeData::Blob { source, .. }) => source.build(ctx).await?,
+
+			_ => {
+				return Err(RunNodeError::BadInputType {
+					port: PortName::new("data"),
+				})
+			}
+		};
+
+		//
+		// Setup is done, extract tags
+		//
+		debug!(
+			message = "Extracting tags",
+			node_id = ?this_node.id
+		);
+
+		let mut block_reader = FlacBlockReader::new(FlacBlockSelector {
+			pick_vorbiscomment: true,
+			..Default::default()
+		});
+
+		while let Some(data) = reader.next_fragment().await? {
+			block_reader
+				.push_data(&data)
+				.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+		}
+
+		block_reader
+			.finish()
+			.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+
+		//
+		// Return tags
+		//
+
+		let mut output = BTreeMap::new();
+
+		while block_reader.has_block() {
+			let b = block_reader.pop_block().unwrap();
+			match b {
+				FlacBlock::VorbisComment(comment) => {
+					for (port, tag_type) in tags.iter() {
+						if let Some((_, tag_value)) =
+							comment.comment.comments.iter().find(|(t, _)| t == tag_type)
+						{
+							let x = output.insert(
+								port.clone(),
+								PipeData::Text {
+									value: tag_value.clone(),
+								},
+							);
+
+							// Each insertion should be new
+							assert!(x.is_none());
+						}
+					}
+				}
+
+				// `reader` filters blocks for us
+				_ => unreachable!(),
+			}
+
+			// We should only have one comment block
+			assert!(!block_reader.has_block());
+		}
+
+		return Ok(output);
+	}
+}

crates/pile-audio/src/nodes/mod.rs

@@ -0,0 +1,36 @@
+//! Pipeline nodes for processing audio files
+use copper_piper::base::{NodeDispatcher, RegisterNodeError};
+use std::collections::BTreeMap;
+
+mod extractcovers;
+mod extracttags;
+mod striptags;
+
+/// Register all nodes in this module into the given dispatcher
+pub fn register(dispatcher: &mut NodeDispatcher) -> Result<(), RegisterNodeError> {
+	dispatcher
+		.register_node(
+			"StripTags",
+			BTreeMap::new(),
+			Box::new(striptags::StripTags {}),
+		)
+		.unwrap();
+
+	dispatcher
+		.register_node(
+			"ExtractCovers",
+			BTreeMap::new(),
+			Box::new(extractcovers::ExtractCovers {}),
+		)
+		.unwrap();
+
+	dispatcher
+		.register_node(
+			"ExtractTags",
+			BTreeMap::new(),
+			Box::new(extracttags::ExtractTags {}),
+		)
+		.unwrap();
+
+	return Ok(());
+}

crates/pile-audio/src/nodes/striptags.rs

@@ -0,0 +1,181 @@
+//! Strip all tags from an audio file
+
+use crate::flac::proc::metastrip::FlacMetaStrip;
+use async_trait::async_trait;
+use copper_piper::{
+	base::{Node, NodeBuilder, NodeId, PortName, RunNodeError, ThisNodeInfo},
+	data::PipeData,
+	helpers::{
+		processor::{StreamProcessor, StreamProcessorBuilder},
+		NodeParameters,
+	},
+	CopperContext,
+};
+use copper_util::MimeType;
+use smartstring::{LazyCompact, SmartString};
+use std::{collections::BTreeMap, sync::Arc};
+use tokio::sync::mpsc::{Receiver, Sender};
+use tracing::debug;
+
+/// Strip all metadata from an audio file
+pub struct StripTags {}
+
+impl NodeBuilder for StripTags {
+	fn build<'ctx>(&self) -> Box<dyn Node<'ctx>> {
+		Box::new(Self {})
+	}
+}
+
+// Input: "data" - Blob
+// Output: "out" - Blob
+#[async_trait]
+impl<'ctx> Node<'ctx> for StripTags {
+	async fn run(
+		&self,
+		_ctx: &CopperContext<'ctx>,
+		this_node: ThisNodeInfo,
+		params: NodeParameters,
+		mut input: BTreeMap<PortName, Option<PipeData>>,
+	) -> Result<BTreeMap<PortName, PipeData>, RunNodeError> {
+		//
+		// Extract parameters
+		//
+		params.err_if_not_empty()?;
+
+		//
+		// Extract arguments
+		//
+		let data = input.remove(&PortName::new("data"));
+		if data.is_none() {
+			return Err(RunNodeError::MissingInput {
+				port: PortName::new("data"),
+			});
+		}
+		if let Some((port, _)) = input.pop_first() {
+			return Err(RunNodeError::UnrecognizedInput { port });
+		}
+
+		let source = match data.unwrap() {
+			None => {
+				return Err(RunNodeError::RequiredInputNull {
+					port: PortName::new("data"),
+				})
+			}
+
+			Some(PipeData::Blob { source, .. }) => source,
+
+			_ => {
+				return Err(RunNodeError::BadInputType {
+					port: PortName::new("data"),
+				})
+			}
+		};
+
+		debug!(
+			message = "Setup done, stripping tags",
+			node_id = ?this_node.id
+		);
+
+		let mut output = BTreeMap::new();
+
+		output.insert(
+			PortName::new("out"),
+			PipeData::Blob {
+				source: source.add_processor(Arc::new(TagStripProcessor {
+					node_id: this_node.id.clone(),
+					node_type: this_node.node_type.clone(),
+				})),
+			},
+		);
+
+		return Ok(output);
+	}
+}
+
+#[derive(Debug, Clone)]
+struct TagStripProcessor {
+	node_id: NodeId,
+	node_type: SmartString<LazyCompact>,
+}
+
+impl StreamProcessorBuilder for TagStripProcessor {
+	fn build(&self) -> Box<dyn StreamProcessor> {
+		Box::new(self.clone())
+	}
+}
+
+#[async_trait]
+impl StreamProcessor for TagStripProcessor {
+	fn mime(&self) -> &MimeType {
+		return &MimeType::Flac;
+	}
+
+	fn name(&self) -> &'static str {
+		"TagStripProcessor"
+	}
+
+	fn source_node_id(&self) -> &NodeId {
+		&self.node_id
+	}
+
+	/// Return the type of the node that created this processor
+	fn source_node_type(&self) -> &str {
+		&self.node_type
+	}
+
+	async fn run(
+		&self,
+		mut source: Receiver<Arc<Vec<u8>>>,
+		sink: Sender<Arc<Vec<u8>>>,
+		max_buffer_size: usize,
+	) -> Result<(), RunNodeError> {
+		//
+		// Strip tags
+		//
+
+		let mut strip = FlacMetaStrip::new();
+		let mut out_bytes = Vec::new();
+
+		while let Some(data) = source.recv().await {
+			strip
+				.push_data(&data)
+				.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+
+			strip
+				.read_data(&mut out_bytes)
+				.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+
+			if out_bytes.len() >= max_buffer_size {
+				let x = std::mem::take(&mut out_bytes);
+
+				match sink.send(Arc::new(x)).await {
+					Ok(()) => {}
+
+					// Not an error, our receiver was dropped.
+					// Exit early if that happens!
+					Err(_) => return Ok(()),
+				};
+			}
+		}
+
+		strip
+			.finish()
+			.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+
+		while strip.has_data() {
+			strip
+				.read_data(&mut out_bytes)
+				.map_err(|e| RunNodeError::Other(Arc::new(e)))?;
+		}
+
+		match sink.send(Arc::new(out_bytes)).await {
+			Ok(()) => {}
+
+			// Not an error, our receiver was dropped.
+			// Exit early if that happens!
+			Err(_) => return Ok(()),
+		};
+
+		return Ok(());
+	}
+}

crates/pile-config/src/config.toml

@@ -8,7 +8,7 @@ name = "dataset"
 #
 # working_dir = ".pile"
 
-# Data sources avaliable in this dataset
+# Data sources available in this dataset
 source."music" = { type = "flac", path = ["music", "music-2"] }
 
 
@@ -19,7 +19,7 @@ source."music" = { type = "flac", path = ["music", "music-2"] }
 #
 # "field-name" = {
 #   # The type of data this field contains.
-#   # only text is supportedin this verison.
+#   # only text is supported in this version.
 #   type = "text",
 #
 #   # An array of jsonpaths (rfc9535) used to extract this field from each source entry.

crates/pile-config/src/lib.rs

@@ -10,8 +10,9 @@ pub use misc::*;
 pub static INIT_DB_TOML: &str = include_str!("./config.toml");
 
 #[test]
+#[expect(clippy::unwrap_used)]
 fn init_db_toml_valid() {
-	toml::from_str::<ConfigToml>(INIT_DB_TOML).unwrap();
+	toml::from_str::<ConfigToml>(INIT_DB_TOML).expect("INIT_DB_TOML should be valid TOML");
 }
 
 #[derive(Debug, Clone, Deserialize)]

crates/pile-config/src/misc.rs

@@ -22,7 +22,7 @@ impl<T: Debug + Clone> OneOrMany<T> {
 
 	pub fn as_slice(&self) -> &[T] {
 		match self {
-			Self::One(x) => slice::from_ref(&x),
+			Self::One(x) => slice::from_ref(x),
 			Self::Many(x) => &x[..],
 		}
 	}

crates/pile-config/src/post.rs

@@ -62,7 +62,7 @@ impl FieldSpecPost {
 				Value::Bool(_) | Value::Number(_) => Value::String(val.to_string()),
 
 				Value::String(x) => {
-					Value::String(x.strip_suffix(trim_suffix).unwrap_or(&x).to_owned())
+					Value::String(x.strip_suffix(trim_suffix).unwrap_or(x).to_owned())
 				}
 
 				Value::Array(x) => {
@@ -73,7 +73,7 @@ impl FieldSpecPost {
 					x.iter()
 						.map(|x| {
 							(
-								x.0.strip_suffix(trim_suffix).unwrap_or(&x.0).to_owned(),
+								x.0.strip_suffix(trim_suffix).unwrap_or(x.0).to_owned(),
 								self.apply(x.1),
 							)
 						})
@@ -88,7 +88,7 @@ impl FieldSpecPost {
 				Value::Bool(_) | Value::Number(_) => Value::String(val.to_string()),
 
 				Value::String(x) => {
-					Value::String(x.strip_prefix(trim_prefix).unwrap_or(&x).to_owned())
+					Value::String(x.strip_prefix(trim_prefix).unwrap_or(x).to_owned())
 				}
 
 				Value::Array(x) => {

crates/pile-dataset/Cargo.toml

@@ -10,6 +10,7 @@ workspace = true
 [dependencies]
 pile-config = { workspace = true }
 pile-audio = { workspace = true }
+pile-toolbox = { workspace = true }
 
 serde_json = { workspace = true }
 itertools = { workspace = true }
@@ -18,3 +19,5 @@ tantivy = { workspace = true }
 tracing = { workspace = true }
 jsonpath-rust = { workspace = true }
 chrono = { workspace = true }
+toml = { workspace = true }
+thiserror = { workspace = true }

crates/pile-dataset/src/dataset.rs

@@ -0,0 +1,231 @@
+use chrono::{DateTime, Utc};
+use pile_config::{ConfigToml, Source};
+use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
+use std::{io::ErrorKind, path::PathBuf, sync::Arc};
+use tantivy::{Executor, Index, IndexWriter, TantivyError, collector::TopDocs};
+use thiserror::Error;
+use tracing::{info, trace, warn};
+
+use crate::{
+	DataSource,
+	index::{DbFtsIndex, FtsLookupResult},
+	path_ts_earliest,
+	source::DirDataSource,
+};
+
+#[derive(Debug, Error)]
+pub enum DatasetError {
+	#[error("{0}")]
+	IoError(#[from] std::io::Error),
+
+	#[error("{0}")]
+	TantivyError(#[from] TantivyError),
+
+	#[error("this dataset does not have an fts index")]
+	NoFtsIndex,
+}
+
+pub struct Dataset {
+	pub path_config: PathBuf,
+	pub path_parent: PathBuf,
+	pub path_workdir: PathBuf,
+
+	pub config: ConfigToml,
+}
+
+impl Dataset {
+	pub fn open(config: impl Into<PathBuf>) -> Result<Self, std::io::Error> {
+		let path_config = config.into();
+		let path_parent = path_config
+			.parent()
+			.ok_or(std::io::Error::new(
+				ErrorKind::NotADirectory,
+				format!("Config file {} has no parent", path_config.display()),
+			))?
+			.to_owned();
+
+		let config = {
+			let config = std::fs::read_to_string(&path_config)?;
+			let config: Result<ConfigToml, _> = toml::from_str(&config);
+
+			match config {
+				Ok(config) => {
+					trace!(message = "Loaded config", ?config);
+					config
+				}
+
+				Err(error) => {
+					return Err(std::io::Error::new(
+						ErrorKind::InvalidData,
+						format!("{} is invalid:\n{error}", path_config.display()),
+					));
+				}
+			}
+		};
+
+		let path_workdir = config
+			.dataset
+			.working_dir
+			.clone()
+			.unwrap_or(path_parent.join(".pile"))
+			.join(config.dataset.name.as_str());
+
+		return Ok(Self {
+			path_config,
+			path_parent,
+			path_workdir,
+			config,
+		});
+	}
+
+	//
+	// MARK: fts
+	//
+
+	/// Refresh this dataset's fts index
+	pub fn fts_refresh(
+		&self,
+		flag: Option<CancelFlag>,
+	) -> Result<(), CancelableTaskError<DatasetError>> {
+		let fts_tmp_dir = self.path_workdir.join(".tmp-fts");
+		let fts_dir = self.path_workdir.join("fts");
+
+		if fts_tmp_dir.is_dir() {
+			warn!("Removing temporary index in {}", fts_dir.display());
+			std::fs::remove_dir_all(&fts_tmp_dir).map_err(DatasetError::from)?;
+		}
+		if fts_dir.is_dir() {
+			warn!("Removing existing index in {}", fts_dir.display());
+			std::fs::remove_dir_all(&fts_dir).map_err(DatasetError::from)?;
+		}
+
+		std::fs::create_dir_all(&fts_tmp_dir).map_err(DatasetError::from)?;
+
+		let mut sources = Vec::new();
+		for (name, source) in &self.config.dataset.source {
+			match source {
+				Source::Flac { path: dir } => {
+					let source = DirDataSource::new(name, dir.clone().to_vec());
+					sources.push(source);
+				}
+			}
+		}
+
+		let db_index = DbFtsIndex::new(&fts_tmp_dir, &self.config);
+		let mut index = Index::create_in_dir(&fts_tmp_dir, db_index.schema.clone())
+			.map_err(DatasetError::from)?;
+		index.set_executor(Executor::multi_thread(10, "build-fts").map_err(DatasetError::from)?);
+		let mut index_writer: IndexWriter =
+			index.writer(50 * 1024 * 1024).map_err(DatasetError::from)?;
+
+		for s in sources {
+			info!("Processing source {:?}", s.name);
+
+			for i in s.iter() {
+				let (k, v) = i.map_err(DatasetError::from)?;
+
+				let doc = match db_index.entry_to_document(&*v) {
+					Ok(Some(x)) => x,
+					Ok(None) => {
+						warn!("Skipping {k:?}, document is empty");
+						continue;
+					}
+					Err(err) => {
+						warn!("Could not read {k:?}, skipping. {err}");
+						continue;
+					}
+				};
+				index_writer.add_document(doc).map_err(DatasetError::from)?;
+
+				if let Some(flag) = flag.as_ref()
+					&& flag.is_cancelled()
+				{
+					return Err(CancelableTaskError::Cancelled);
+				}
+			}
+		}
+
+		info!("Committing index");
+		index_writer.commit().map_err(DatasetError::from)?;
+		std::fs::rename(&fts_tmp_dir, &fts_dir).map_err(DatasetError::from)?;
+
+		return Ok(());
+	}
+
+	pub fn fts_lookup(
+		&self,
+		query: &str,
+		top_n: usize,
+	) -> Result<Vec<FtsLookupResult>, DatasetError> {
+		let fts_dir = self.path_workdir.join("fts");
+
+		if !fts_dir.exists() {
+			return Err(DatasetError::NoFtsIndex);
+		}
+		if !fts_dir.is_dir() {
+			return Err(std::io::Error::new(
+				ErrorKind::NotADirectory,
+				format!("fts index {} is not a directory", fts_dir.display()),
+			)
+			.into());
+		}
+
+		let db_index = DbFtsIndex::new(&fts_dir, &self.config);
+		let results = db_index.lookup(query, Arc::new(TopDocs::with_limit(top_n)))?;
+		return Ok(results);
+	}
+
+	/// Time at which fts was created
+	pub fn ts_fts(&self) -> Result<Option<DateTime<Utc>>, std::io::Error> {
+		let fts_dir = self.path_workdir.join("fts");
+
+		if !fts_dir.exists() {
+			return Ok(None);
+		}
+		if !fts_dir.is_dir() {
+			return Err(std::io::Error::new(
+				ErrorKind::NotADirectory,
+				format!("fts index {} is not a directory", fts_dir.display()),
+			));
+		}
+
+		return path_ts_earliest(&fts_dir);
+	}
+
+	/// Time at which data was last modified
+	pub fn ts_data(&self) -> Result<Option<DateTime<Utc>>, std::io::Error> {
+		let mut ts: Option<DateTime<Utc>> = None;
+
+		for (label, source) in &self.config.dataset.source {
+			match source {
+				Source::Flac { path } => {
+					let s = DirDataSource::new(label, path.clone().to_vec());
+					match (ts, s.latest_change()?) {
+						(_, None) => continue,
+						(None, Some(new)) => ts = Some(new),
+						(Some(old), Some(new)) => ts = Some(old.max(new)),
+					};
+				}
+			}
+		}
+
+		return Ok(ts);
+	}
+
+	/// Returns true if we do not have an fts index,
+	/// or if our fts index is older than our data.
+	pub fn needs_fts(&self) -> Result<bool, std::io::Error> {
+		let ts_fts = self.ts_fts()?;
+		let ts_data = self.ts_data()?;
+
+		match (ts_fts, ts_data) {
+			(None, Some(_)) => return Ok(true),
+			(None, None) | (Some(_), None) => {
+				warn!("Could not determine data age");
+				return Ok(false);
+			}
+
+			(Some(ts_fts), Some(ts_data)) => return Ok(ts_data > ts_fts),
+		}
+	}
+}

crates/pile-dataset/src/index/index_fts.rs

@@ -27,8 +27,8 @@ pub struct DbFtsIndex {
 
 impl DbFtsIndex {
 	fn fts_cfg(&self) -> &DatasetFts {
-		static DEFAULT: LazyLock<DatasetFts> = LazyLock::new(|| DatasetFts::default());
-		&self.cfg.fts.as_ref().unwrap_or(&DEFAULT)
+		static DEFAULT: LazyLock<DatasetFts> = LazyLock::new(DatasetFts::default);
+		self.cfg.fts.as_ref().unwrap_or(&DEFAULT)
 	}
 }
 
@@ -47,9 +47,9 @@ impl DbFtsIndex {
 			let fields = &cfg.fts.as_ref().unwrap_or(&default).fields;
 			for (name, field) in fields {
 				if field.tokenize {
-					schema_builder.add_text_field(&name, schema::TEXT);
+					schema_builder.add_text_field(name, schema::TEXT);
 				} else {
-					schema_builder.add_text_field(&name, schema::STRING);
+					schema_builder.add_text_field(name, schema::STRING);
 				}
 			}
 
@@ -70,19 +70,23 @@ impl DbFtsIndex {
 	) -> Result<Option<TantivyDocument>, TantivyError> {
 		let mut doc = TantivyDocument::default();
 
-		{
-			let f_ptr = self.schema.get_field("_meta_source")?;
-			doc.add_text(f_ptr, item.source_name());
+		let key = match item.key().to_string() {
+			Some(x) => x,
+			None => {
+				warn!(
+					message = "Item key cannot be converted to a string, skipping",
+					key = ?item.key(),
+				);
+				return Ok(None);
 			}
+		};
 
-		{
-			let f_ptr = self.schema.get_field("_meta_key")?;
-			doc.add_text(f_ptr, item.key().to_string());
-		}
+		doc.add_text(self.schema.get_field("_meta_source")?, item.source_name());
+		doc.add_text(self.schema.get_field("_meta_key")?, key);
 
-		let json = item.json().unwrap();
+		let json = item.json()?;
 		let mut empty = true;
-		for (name, _field) in &self.fts_cfg().fields {
+		for name in self.fts_cfg().fields.keys() {
 			let val = match self.get_field(&json, name)? {
 				Some(x) => x,
 				None => continue,
@@ -118,7 +122,7 @@ impl DbFtsIndex {
 
 		// Try paths in order, using the first value we find
 		'outer: for path in field.path.as_slice() {
-			let val = match json.query(&path) {
+			let val = match json.query(path) {
 				Ok(mut x) => {
 					if x.len() > 1 {
 						warn!(
@@ -168,6 +172,7 @@ impl DbFtsIndex {
 
 			loop {
 				val = match val {
+					#[expect(clippy::unwrap_used)]
 					Value::Array(ref mut x) => {
 						if x.len() == 1 {
 							x.pop().unwrap()

crates/pile-dataset/src/item/flac.rs

@@ -6,13 +6,14 @@ use std::{
 };
 
 use pile_audio::flac::blockread::{FlacBlock, FlacBlockReader, FlacBlockSelector};
+use pile_config::Label;
 use serde_json::{Map, Value};
 
 use crate::Item;
 
 pub struct FlacItem {
 	pub(crate) path: PathBuf,
-	pub(crate) source_name: String,
+	pub(crate) source_name: Label,
 }
 
 impl Debug for FlacItem {
@@ -47,8 +48,10 @@ impl Item for FlacItem {
 		let mut data = Vec::new();
 		file.read_to_end(&mut data)?;
 
-		block_reader.push_data(&data).unwrap();
-		block_reader.finish().unwrap();
+		block_reader
+			.push_data(&data)
+			.map_err(std::io::Error::other)?;
+		block_reader.finish().map_err(std::io::Error::other)?;
 
 		//
 		// Return tags
@@ -56,9 +59,8 @@ impl Item for FlacItem {
 
 		let mut output = Map::new();
 
-		while block_reader.has_block() {
-			let b = block_reader.pop_block().unwrap();
-			match b {
+		while let Some(block) = block_reader.pop_block() {
+			match block {
 				FlacBlock::VorbisComment(comment) => {
 					for (k, v) in comment.comment.comments {
 						let k = k.to_string();
@@ -67,9 +69,11 @@ impl Item for FlacItem {
 
 						match e {
 							None => {
-								output.insert(k.to_string(), Value::Array(vec![v]));
+								output.insert(k.clone(), Value::Array(vec![v]));
 							}
 							Some(e) => {
+								// We always insert an array
+								#[expect(clippy::unwrap_used)]
 								e.as_array_mut().unwrap().push(v);
 							}
 						}

crates/pile-dataset/src/lib.rs

@@ -4,6 +4,9 @@ pub use traits::*;
 mod misc;
 pub use misc::*;
 
+mod dataset;
+pub use dataset::*;
+
 pub mod index;
 pub mod item;
 pub mod source;

crates/pile-dataset/src/misc.rs

@@ -2,41 +2,65 @@ use chrono::{DateTime, Utc};
 use std::fs;
 use std::path::Path;
 
-/// Returns the age of a path as a chrono DateTime.
-/// - If the path doesn't exist, returns None
+/// Returns the age of a path as a [DateTime].
+/// - If the path doesn't exist, returns [None]
 /// - If it's a file, returns the modified time
 /// - If it's a directory, returns the LATEST modified time of all files within
-pub fn path_age(path: impl AsRef<Path>) -> Option<DateTime<Utc>> {
+pub fn path_ts_latest(path: impl AsRef<Path>) -> Result<Option<DateTime<Utc>>, std::io::Error> {
 	let path = path.as_ref();
-
-	// Check if path exists
 	if !path.exists() {
-		return None;
+		return Ok(None);
 	}
 
-	let metadata = fs::metadata(path).ok()?;
+	let metadata = fs::metadata(path)?;
 
 	if metadata.is_file() {
-		// For files, return the modified time
-		let modified = metadata.modified().ok()?;
-		Some(modified.into())
+		let modified = metadata.modified()?;
+		Ok(Some(modified.into()))
 	} else if metadata.is_dir() {
-		// For directories, find the latest modified time of all files
 		find_latest_modified(path)
 	} else {
-		None
+		Ok(None)
 	}
 }
 
-fn find_latest_modified(dir: &Path) -> Option<DateTime<Utc>> {
+/// Returns the age of a path as a [DateTime].
+/// - If the path doesn't exist, returns [None]
+/// - If it's a file, returns the modified time
+/// - If it's a directory, returns the EARLIEST modified time of all files within
+pub fn path_ts_earliest(path: impl AsRef<Path>) -> Result<Option<DateTime<Utc>>, std::io::Error> {
+	let path = path.as_ref();
+	if !path.exists() {
+		return Ok(None);
+	}
+
+	let metadata = fs::metadata(path)?;
+
+	if metadata.is_file() {
+		let modified = metadata.modified()?;
+		Ok(Some(modified.into()))
+	} else if metadata.is_dir() {
+		find_earliest_modified(path)
+	} else {
+		Ok(None)
+	}
+}
+
+fn find_latest_modified(dir: &Path) -> Result<Option<DateTime<Utc>>, std::io::Error> {
 	let mut latest: Option<DateTime<Utc>> = None;
 
-	// Read directory entries
-	let entries = fs::read_dir(dir).ok()?;
+	// Include the directory's own modification time
+	let dir_metadata = fs::metadata(dir)?;
+	if let Ok(modified) = dir_metadata.modified() {
+		let dt: DateTime<Utc> = modified.into();
+		latest = Some(dt);
+	}
+
+	let entries = fs::read_dir(dir)?;
 
 	for entry in entries.flatten() {
 		let path = entry.path();
-		let metadata = entry.metadata().ok()?;
+		let metadata = entry.metadata()?;
 
 		if metadata.is_file() {
 			if let Ok(modified) = metadata.modified() {
@@ -46,16 +70,50 @@ fn find_latest_modified(dir: &Path) -> Option<DateTime<Utc>> {
 					_ => dt,
 				});
 			}
-		} else if metadata.is_dir() {
-			// Recursively check subdirectories
-			if let Some(dir_latest) = find_latest_modified(&path) {
+		} else if metadata.is_dir()
+			&& let Some(dir_latest) = find_latest_modified(&path)? {
 				latest = Some(match latest {
 					Some(prev) if prev > dir_latest => prev,
 					_ => dir_latest,
 				});
 			}
 	}
+
+	return Ok(latest);
+}
+
+fn find_earliest_modified(dir: &Path) -> Result<Option<DateTime<Utc>>, std::io::Error> {
+	let mut earliest: Option<DateTime<Utc>> = None;
+
+	// Include the directory's own modification time
+	let dir_metadata = fs::metadata(dir)?;
+	if let Ok(modified) = dir_metadata.modified() {
+		let dt: DateTime<Utc> = modified.into();
+		earliest = Some(dt);
 	}
 
-	latest
+	let entries = fs::read_dir(dir)?;
+
+	for entry in entries.flatten() {
+		let path = entry.path();
+		let metadata = entry.metadata()?;
+
+		if metadata.is_file() {
+			if let Ok(modified) = metadata.modified() {
+				let dt: DateTime<Utc> = modified.into();
+				earliest = Some(match earliest {
+					Some(prev) if prev < dt => prev,
+					_ => dt,
+				});
+			}
+		} else if metadata.is_dir()
+			&& let Some(dir_earliest) = find_earliest_modified(&path)? {
+				earliest = Some(match earliest {
+					Some(prev) if prev < dir_earliest => prev,
+					_ => dir_earliest,
+				});
+			}
+	}
+
+	return Ok(earliest);
 }

crates/pile-dataset/src/source/dir.rs

@@ -1,19 +1,21 @@
+use chrono::{DateTime, Utc};
 use itertools::Itertools;
-use std::{io::ErrorKind, path::PathBuf};
+use pile_config::Label;
+use std::path::PathBuf;
 use walkdir::WalkDir;
 
-use crate::{DataSource, Item, item::FlacItem};
+use crate::{DataSource, Item, item::FlacItem, path_ts_latest};
 
 #[derive(Debug)]
 pub struct DirDataSource {
-	pub name: String,
+	pub name: Label,
 	pub dirs: Vec<PathBuf>,
 }
 
 impl DirDataSource {
-	pub fn new(name: impl Into<String>, dirs: Vec<PathBuf>) -> Self {
+	pub fn new(name: &Label, dirs: Vec<PathBuf>) -> Self {
 		Self {
-			name: name.into(),
+			name: name.clone(),
 			dirs,
 		}
 	}
@@ -40,16 +42,12 @@ impl DataSource for DirDataSource {
 		return self
 			.dirs
 			.iter()
-			.map(|x| WalkDir::new(x).into_iter().map_ok(move |d| (x, d)))
-			.flatten()
-			.into_iter()
-			.filter_ok(|(_, entry)| entry.file_type().is_file())
+			.flat_map(|x| WalkDir::new(x).into_iter().map_ok(move |d| (x, d)))
+			.filter_ok(|(_, entry)| !entry.file_type().is_dir())
 			.map(|x| match x {
 				Err(err) => {
 					let msg = format!("other walkdir error: {err:?}");
-					Err(err
-						.into_io_error()
-						.unwrap_or(std::io::Error::new(ErrorKind::Other, msg)))
+					Err(err.into_io_error().unwrap_or(std::io::Error::other(msg)))
 				}
 				Ok((_, entry)) => {
 					let path = entry.into_path();
@@ -63,4 +61,23 @@ impl DataSource for DirDataSource {
 				}
 			});
 	}
+
+	fn latest_change(&self) -> Result<Option<DateTime<Utc>>, Self::Error> {
+		let mut ts: Option<DateTime<Utc>> = None;
+
+		for path in &self.dirs {
+			if !path.exists() {
+				continue;
+			}
+
+			let new = path_ts_latest(path)?;
+			match (ts, new) {
+				(_, None) => continue,
+				(None, Some(new)) => ts = Some(new),
+				(Some(old), Some(new)) => ts = Some(old.max(new)),
+			};
+		}
+
+		return Ok(ts);
+	}
 }

crates/pile-dataset/src/traits.rs

@@ -1,3 +1,4 @@
+use chrono::{DateTime, Utc};
 use std::{error::Error, fmt::Debug, path::PathBuf};
 
 /// A read-only set of [Item]s.
@@ -15,6 +16,9 @@ pub trait DataSource {
 	fn iter(
 		&self,
 	) -> impl Iterator<Item = Result<(Self::Key, Box<dyn Item<Key = Self::Key>>), Self::Error>>;
+
+	/// Return the time of the latest change to the data in this source
+	fn latest_change(&self) -> Result<Option<DateTime<Utc>>, Self::Error>;
 }
 
 pub trait Item: Debug + Send + Sync + 'static {
@@ -34,7 +38,10 @@ pub trait Item: Debug + Send + Sync + 'static {
 //
 
 pub trait Key: Debug + Clone + Send + Sync + 'static {
-	fn to_string(&self) -> String;
+	/// Convert this key to a string, returning `None`
+	/// if we encounter any kind of error.
+	fn to_string(&self) -> Option<String>;
+
 	fn from_string(str: &str) -> Option<Self>;
 }
 
@@ -43,7 +50,7 @@ impl Key for PathBuf {
 		str.parse().ok()
 	}
 
-	fn to_string(&self) -> String {
-		self.to_str().expect("path is not a string").to_owned()
+	fn to_string(&self) -> Option<String> {
+		self.to_str().map(|x| x.to_owned())
 	}
 }

crates/pile/Cargo.toml

@@ -24,4 +24,3 @@ tracing-indicatif = { workspace = true }
 signal-hook = { workspace = true }
 anstyle = { workspace = true }
 toml = { workspace = true }
-tantivy = { workspace = true }

crates/pile/src/command/check.rs

@@ -1,9 +1,10 @@
 use anyhow::{Context, Result, anyhow};
 use clap::Args;
 use pile_config::ConfigToml;
+use pile_dataset::Dataset;
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
 use std::{fmt::Debug, path::PathBuf};
-use tracing::{debug, error, info};
+use tracing::{debug, error, info, warn};
 
 use crate::{CliCmd, GlobalContext};
 
@@ -34,7 +35,6 @@ impl CliCmd for CheckCommand {
 			Ok(config) => {
 				info!("Config in {} is valid", self.config.display());
 				debug!("{config:#?}");
-				return Ok(0);
 			}
 
 			Err(error) => {
@@ -42,5 +42,29 @@ impl CliCmd for CheckCommand {
 				return Ok(1);
 			}
 		}
+
+		let ds = Dataset::open(&self.config)
+			.with_context(|| format!("while opening dataset for {}", self.config.display()))?;
+
+		let ts_fts = ds.ts_fts().context("while determining fts age")?;
+		let ts_data = ds.ts_data().context("while determining data age")?;
+
+		match (ts_fts, ts_data) {
+			(None, Some(_)) => warn!("Could not determine fts age"),
+			(None, None) | (Some(_), None) => warn!("Could not determine data age"),
+			(Some(ts_fts), Some(ts_data)) => {
+				let delta_secs = ((ts_data - ts_fts).as_seconds_f64() * 100.0).round() / 100.0;
+				if ts_data > ts_fts {
+					info!(
+						message = "FTS index is out-of-date and should be regenerated",
+						?delta_secs,
+					);
+				} else {
+					debug!(message = "FTS index is up-to-date", ?delta_secs);
+				}
+			}
+		}
+
+		return Ok(0);
 	}
 }

crates/pile/src/command/index.rs

@@ -1,11 +1,8 @@
-use anyhow::{Context, Result, anyhow};
+use anyhow::{Context, Result};
 use clap::Args;
-use pile_config::{ConfigToml, Source};
-use pile_dataset::{DataSource, index::DbFtsIndex, source::DirDataSource};
+use pile_dataset::Dataset;
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
 use std::{fmt::Debug, path::PathBuf};
-use tantivy::{Executor, Index, IndexWriter};
-use tracing::{error, info, trace, warn};
 
 use crate::{CliCmd, GlobalContext};
 
@@ -22,88 +19,17 @@ impl CliCmd for IndexCommand {
 		_ctx: GlobalContext,
 		flag: CancelFlag,
 	) -> Result<i32, CancelableTaskError<anyhow::Error>> {
-		let parent = self
-			.config
-			.parent()
-			.with_context(|| format!("Config file {} has no parent", self.config.display()))?;
+		let ds = Dataset::open(&self.config)
+			.with_context(|| format!("while opening dataset for {}", self.config.display()))?;
 
-		if !self.config.exists() {
-			return Err(anyhow!("{} does not exist", self.config.display()).into());
-		}
-
-		let config = {
-			let config = std::fs::read_to_string(&self.config)
-				.with_context(|| format!("while reading {}", self.config.display()))?;
-			let config: Result<ConfigToml, _> = toml::from_str(&config);
-
-			match config {
-				Ok(config) => {
-					trace!(message = "Loaded config", ?config);
-					config
-				}
-
-				Err(error) => {
-					error!("{} is invalid:\n{error}", self.config.display());
-					return Ok(1);
-				}
-			}
-		};
-
-		let working_dir = config
-			.dataset
-			.working_dir
-			.clone()
-			.unwrap_or(parent.join(".pile"))
-			.join(&config.dataset.name.as_str());
-		let fts_dir = working_dir.join("fts");
-
-		if fts_dir.is_dir() {
-			warn!("Removing existing index in {}", fts_dir.display());
-			std::fs::remove_dir_all(&fts_dir)
-				.with_context(|| format!("while removing {}", fts_dir.display()))?;
-		}
-
-		std::fs::create_dir_all(&fts_dir)
-			.with_context(|| format!("while creating dir {}", fts_dir.display()))?;
-
-		let mut sources = Vec::new();
-		for (name, source) in &config.dataset.source {
-			match source {
-				Source::Flac { path: dir } => {
-					let source = DirDataSource::new(name.as_str(), dir.clone().to_vec());
-					sources.push(source);
-				}
-			}
-		}
-
-		let db_index = DbFtsIndex::new(&fts_dir, &config);
-		let mut index = Index::create_in_dir(&fts_dir, db_index.schema.clone()).unwrap();
-		index.set_executor(Executor::multi_thread(10, "build-fts").unwrap());
-		let mut index_writer: IndexWriter = index.writer(15_000_000).unwrap();
-
-		for s in sources {
-			info!("Processing source {:?}", s.name);
-
-			for i in s.iter() {
-				let (k, v) = i.unwrap();
-
-				let doc = match db_index.entry_to_document(&*v).unwrap() {
-					Some(x) => x,
-					None => {
-						warn!("Skipping {k:?}, document is empty");
-						continue;
-					}
-				};
-				index_writer.add_document(doc).unwrap();
-
-				if flag.is_cancelled() {
-					return Err(CancelableTaskError::Cancelled);
-				}
-			}
-		}
-
-		info!("Committing index");
-		index_writer.commit().unwrap();
+		ds.fts_refresh(Some(flag)).map_err(|x| {
+			x.map_err(|x| {
+				anyhow::Error::from(x).context(format!(
+					"while refreshing fts for {}",
+					self.config.display()
+				))
+			})
+		})?;
 
 		return Ok(0);
 	}

crates/pile/src/command/lookup.rs

@@ -1,11 +1,9 @@
-use anyhow::{Context, Result, anyhow};
+use anyhow::{Context, Result};
 use clap::Args;
-use pile_config::ConfigToml;
-use pile_dataset::index::DbFtsIndex;
+use pile_dataset::Dataset;
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
-use std::{fmt::Debug, path::PathBuf, sync::Arc};
-use tantivy::collector::TopDocs;
-use tracing::{error, trace};
+use std::{fmt::Debug, path::PathBuf};
+use tracing::info;
 
 use crate::{CliCmd, GlobalContext};
 
@@ -24,57 +22,37 @@ pub struct LookupCommand {
 	/// Path to dataset config
 	#[arg(long, short = 'c', default_value = "./pile.toml")]
 	config: PathBuf,
+
+	/// If provided, do not refresh fts
+	#[arg(long)]
+	no_refresh: bool,
 }
 
 impl CliCmd for LookupCommand {
+	#[expect(clippy::print_stdout)]
 	async fn run(
 		self,
 		_ctx: GlobalContext,
-		_flag: CancelFlag,
+		flag: CancelFlag,
 	) -> Result<i32, CancelableTaskError<anyhow::Error>> {
-		let parent = self
-			.config
-			.parent()
-			.with_context(|| format!("Config file {} has no parent", self.config.display()))?;
+		let ds = Dataset::open(&self.config)
+			.with_context(|| format!("while opening dataset for {}", self.config.display()))?;
 
-		if !self.config.exists() {
-			return Err(anyhow!("{} does not exist", self.config.display()).into());
+		if ds.needs_fts().context("while checking dataset fts")? {
+			info!("FTS index is missing or out-of-date, regenerating");
+			ds.fts_refresh(Some(flag)).map_err(|x| {
+				x.map_err(|x| {
+					anyhow::Error::from(x).context(format!(
+						"while refreshing fts for {}",
+						self.config.display()
+					))
+				})
+			})?;
 		}
 
-		let config = {
-			let config = std::fs::read_to_string(&self.config)
-				.with_context(|| format!("while reading {}", self.config.display()))?;
-			let config: Result<ConfigToml, _> = toml::from_str(&config);
-
-			match config {
-				Ok(config) => {
-					trace!(message = "Loaded config", ?config);
-					config
-				}
-
-				Err(error) => {
-					error!("{} is invalid:\n{error}", self.config.display());
-					return Ok(1);
-				}
-			}
-		};
-
-		let working_dir = config
-			.dataset
-			.working_dir
-			.clone()
-			.unwrap_or(parent.join(".pile"))
-			.join(&config.dataset.name.as_str());
-		let fts_dir = working_dir.join("fts");
-
-		if !fts_dir.is_dir() {
-			return Err(anyhow!("fts index does not exist").into());
-		}
-
-		let db_index = DbFtsIndex::new(&fts_dir, &config);
-		let results = db_index
-			.lookup(self.query, Arc::new(TopDocs::with_limit(self.topn)))
-			.unwrap();
+		let results = ds
+			.fts_lookup(&self.query, self.topn)
+			.context("while running fts lookup")?;
 
 		if self.score {
 			for res in results {