Resize Image sequentially

resize_sequential.go

package resizesequential

import (
	"Exercise/ResizeImage/lib/resizer"
	"Exercise/ResizeImage/lib/types"
	"flag"
	"fmt"
	"os"
	"time"
)

// ResizeSequential - Resize sequentially a file input, to several sizes
func ResizeSequential(input string, sizes []types.Size) {
	start := time.Now()
	if input == "" {
		fmt.Printf("No input file \n")
		flag.Usage()
		os.Exit(0)
	}

	for _, size := range sizes {
		resized, error := resizer.ResizeImage(
			input,
			size.Width,
			size.Height,
		)
		if error != nil {
			fmt.Printf("\nError happens %v", error)
			os.Exit(0)
		}
		fmt.Printf("\nImage resized %v\n", resized)
	}
	fmt.Println("\nResizeSequential time: ", time.Since(start))
}