schemes: cache schemes

scheme/gen-scheme.fish

@@ -8,10 +8,21 @@ test -f "$argv[1]" && set -l img (realpath "$argv[1]") || set -l img $C_STATE/wa
 contains -- "$argv[2]" light dark && set -l theme $argv[2] || set -l theme dark
 
 set -l variants vibrant tonalspot expressive fidelity fruitsalad rainbow neutral content monochrome
+set -l hash (sha1sum $img | cut -d ' ' -f 1)
 
-# Generate colours
-set -l colours ($src/score.py $img)
+# Cache schemes
+mkdir -p $C_CACHE/schemes
+if ! test -d $C_CACHE/schemes/$hash
+    # Generate colours
+    set -l colours ($src/score.py $img)
+    for variant in $variants
+        mkdir -p $C_CACHE/schemes/$hash/$variant
+        $src/autoadjust.py $theme $variant $colours | head -c -1 > $C_CACHE/schemes/$hash/$variant/$theme.txt
+    end
+end
+
+# Copy schemes from cache
 for variant in $variants
     mkdir -p $src/../data/schemes/dynamic/$variant
-    $src/autoadjust.py $theme $variant $colours | head -c -1 > $src/../data/schemes/dynamic/$variant/$theme.txt
+    cp $C_CACHE/schemes/$hash/$variant/$theme.txt $src/../data/schemes/dynamic/$variant/$theme.txt
 end