Extract epub covers

crates/pile-value/src/extract/item/epub/mod.rs

@@ -1,6 +1,9 @@
 use pile_config::Label;
 use std::sync::Arc;
 
+mod epub_cover;
+pub use epub_cover::*;
+
 mod epub_meta;
 pub use epub_meta::*;
 
@@ -15,6 +18,7 @@ use crate::{
 pub struct EpubExtractor {
 	text: Arc<EpubTextExtractor>,
 	meta: Arc<EpubMetaExtractor>,
+	cover: Arc<EpubCoverExtractor>,
 }
 
 impl EpubExtractor {
@@ -22,6 +26,7 @@ impl EpubExtractor {
 		Self {
 			text: Arc::new(EpubTextExtractor::new(item)),
 			meta: Arc::new(EpubMetaExtractor::new(item)),
+			cover: Arc::new(EpubCoverExtractor::new(item)),
 		}
 	}
 }
@@ -43,6 +48,7 @@ impl ObjectExtractor for EpubExtractor {
 			)),
 
 			("meta", None) => Ok(Some(PileValue::ObjectExtractor(self.meta.clone()))),
+			("cover", None) => self.cover.get(state).await,
 			_ => Ok(None),
 		}
 	}
@@ -52,6 +58,7 @@ impl ObjectExtractor for EpubExtractor {
 		Ok(vec![
 			Label::new("text").unwrap(),
 			Label::new("meta").unwrap(),
+			Label::new("cover").unwrap(),
 		])
 	}
 
@@ -78,6 +85,18 @@ impl ObjectExtractor for EpubExtractor {
 				continue;
 			}
 
+			if k.as_str() == "cover" {
+				let summary = match &v {
+					PileValue::Blob { mime, bytes } => {
+						format!("<Blob ({}, {} bytes)>", mime, bytes.len())
+					}
+					PileValue::Null => "<null>".to_owned(),
+					_ => "<cover>".to_owned(),
+				};
+				map.insert(k.to_string(), serde_json::Value::String(summary));
+				continue;
+			}
+
 			map.insert(k.to_string(), Box::pin(v.to_json(state)).await?);
 		}