From 991e95f02e01c33df6a7542186bb3fa9567f7d46 Mon Sep 17 00:00:00 2001
From: celogeek <65178+celogeek@users.noreply.github.com>
Date: Sat, 14 Jan 2023 16:39:03 +0100
Subject: [PATCH] move filters

---
 internal/epub/filters/autorotate.go | 31 +++++++++++++++++++++++++++++
 internal/epub/image_filters.go      | 25 ++---------------------
 2 files changed, 33 insertions(+), 23 deletions(-)
 create mode 100644 internal/epub/filters/autorotate.go

diff --git a/internal/epub/filters/autorotate.go b/internal/epub/filters/autorotate.go
new file mode 100644
index 0000000..cd7e14b
--- /dev/null
+++ b/internal/epub/filters/autorotate.go
@@ -0,0 +1,31 @@
+package filters
+
+import (
+	"image"
+	"image/draw"
+
+	"github.com/disintegration/gift"
+)
+
+func AutoRotate() *autoRotateFilter {
+	return &autoRotateFilter{}
+}
+
+type autoRotateFilter struct{}
+
+func (p *autoRotateFilter) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
+	if srcBounds.Dx() > srcBounds.Dy() {
+		dstBounds = gift.Rotate90().Bounds(srcBounds)
+	} else {
+		dstBounds = srcBounds
+	}
+	return
+}
+
+func (p *autoRotateFilter) Draw(dst draw.Image, src image.Image, options *gift.Options) {
+	if src.Bounds().Dx() > src.Bounds().Dy() {
+		gift.Rotate90().Draw(dst, src, options)
+	} else {
+		draw.Draw(dst, dst.Bounds(), src, src.Bounds().Min, draw.Src)
+	}
+}
diff --git a/internal/epub/image_filters.go b/internal/epub/image_filters.go
index edfebe6..5345c77 100644
--- a/internal/epub/image_filters.go
+++ b/internal/epub/image_filters.go
@@ -1,9 +1,7 @@
 package epub
 
 import (
-	"image"
-	"image/draw"
-
+	"github.com/celogeek/go-comic-converter/internal/epub/filters"
 	"github.com/disintegration/gift"
 )
 
@@ -12,7 +10,7 @@ func NewGift(options *ImageOptions) *gift.GIFT {
 	g.SetParallelization(false)
 
 	if options.AutoRotate {
-		g.Add(&autoRotateFilter{})
+		g.Add(filters.AutoRotate())
 	}
 	if options.Contrast != 0 {
 		g.Add(gift.Contrast(float32(options.Contrast)))
@@ -25,22 +23,3 @@ func NewGift(options *ImageOptions) *gift.GIFT {
 	)
 	return g
 }
-
-type autoRotateFilter struct{}
-
-func (p *autoRotateFilter) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
-	if srcBounds.Dx() > srcBounds.Dy() {
-		dstBounds = gift.Rotate90().Bounds(srcBounds)
-	} else {
-		dstBounds = srcBounds
-	}
-	return
-}
-
-func (p *autoRotateFilter) Draw(dst draw.Image, src image.Image, options *gift.Options) {
-	if src.Bounds().Dx() > src.Bounds().Dy() {
-		gift.Rotate90().Draw(dst, src, options)
-	} else {
-		draw.Draw(dst, dst.Bounds(), src, src.Bounds().Min, draw.Src)
-	}
-}