From e7b29509e56b1adadbe847e20870cbe406a81b08 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Sat, 20 Jun 2020 22:40:08 -0700
Subject: [PATCH] Use cache for thumbnail too.

---
 src/library.rs | 46 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 12 deletions(-)

diff --git a/src/library.rs b/src/library.rs
index 2a44d98..d257373 100644
--- a/src/library.rs
+++ b/src/library.rs
@@ -137,7 +137,10 @@ impl Library {
             let mut c = c.lock().unwrap();
             match c.get(media_items_id) {
                 Some(bytes) => {
-                    info!("saving local copy from cache {}", media_items_id);
+                    info!(
+                        "saving local copy of original from cache {}",
+                        media_items_id
+                    );
                     fs::write(&download_path, bytes)?;
                 }
                 None => {
@@ -220,17 +223,36 @@ impl Library {
             Ok(Some(bytes)) => Some(bytes),
             // Cache miss, fill cache and return.
             Ok(None) => {
-                info!("cache MISS {}", key);
-                let bytes = match self.generate_thumbnail(
-                    media_items_id,
-                    dimensions,
-                    FilterType::Builtin(imageops::FilterType::Lanczos3),
-                    fill,
-                ) {
-                    Ok(bytes) => bytes,
-                    Err(e) => {
-                        error!("Failed to generate thumbnail for {}: {}", media_items_id, e);
-                        return None;
+                // TODO(wathiede): use cache for thumbnail like download_image does.
+                let c = Arc::clone(&self.image_cache);
+                let mut c = c.lock().unwrap();
+                let bytes = match c.get(&key) {
+                    Some(bytes) => {
+                        info!(
+                            "saving local copy of thumbnail from cache {}",
+                            media_items_id
+                        );
+                        bytes
+                    }
+                    None => {
+                        info!("cache MISS {}", key);
+                        let bytes = match self.generate_thumbnail(
+                            media_items_id,
+                            dimensions,
+                            FilterType::Builtin(imageops::FilterType::Lanczos3),
+                            fill,
+                        ) {
+                            Ok(bytes) => bytes,
+                            Err(e) => {
+                                error!(
+                                    "Failed to generate thumbnail for {}: {}",
+                                    media_items_id, e
+                                );
+                                return None;
+                            }
+                        };
+                        c.set(&key, &bytes);
+                        bytes
                     }
                 };
                 match db.put(key.as_bytes(), &bytes) {