Refactoring with interfaces

Author: joshvoll

07-image-abstraction/main.go

@@ -1,3 +1,4 @@
+
 package main 
 
 import (
@@ -8,34 +9,55 @@ import (
 	"image/jpeg"
 )
 
-func main() {
-	// call to load the iages
-	img := loadImage("../images/78771293.jpg")
-
-	// loading all the data for images
-	r,g,b,a := img.At(0,0).RGBA()
-
-	// print the informaton
-	fmt.Printf("%d %d %d %d \n", r,g,b,a)
+type loadimage interface {
+	LoadImage() image.Image
+}
 
+type imagen struct {
+	filename string
 }
 
-func loadImage(filename string) image.Image {
-	
-	// get the files and return and images
-	f, err := os.Open(filename)
+func (fil imagen) LoadImage() image.Image {
+
+	fmt.Println("loading interfaces")
+	f, err := os.Open(fil.filename)
 
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	defer f.Close()
 
-	img, err := jpeg.Decode(f)
+	// get the information of the file
+	fi, _ := f.Stat()
+
+	fmt.Println("File name: \t\t", fi.Name())
+	fmt.Println("File Size: \t\t", fi.Size())
+	fmt.Println("File Mode: \t\t", fi.Mode())
+	fmt.Println("File ModTime: \t\t", fi.ModTime())
+	fmt.Println("File Is Directory: \t\t", fi.IsDir())
+	fmt.Println("File Sys: \t\t", fi.Sys())
+
+	imgn, err := jpeg.Decode(f)
 
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	return img
-}
+	return imgn
+}
+
+func main() {
+
+	// call to load the iages
+	img := imagen{ filename: "../images/78771293.jpg" }
+
+	 // loading all the data for images
+    r,g,b,a := img.LoadImage().At(0,0).RGBA()
+
+    // print the informaton
+    fmt.Printf("%d %d %d %d \n", r,g,b,a)
+
+}
+
+