76 lines
1.4 KiB
Go
76 lines
1.4 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"embed"
|
|
"image"
|
|
"image/jpeg"
|
|
"log"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
|
|
"github.com/artyom/smartcrop"
|
|
"github.com/edwvee/exiffix"
|
|
"github.com/gofiber/fiber/v2"
|
|
)
|
|
|
|
//go:embed index.html
|
|
|
|
var content embed.FS
|
|
|
|
var imageDirectory = os.Getenv("IMAGE_DIRECTORY")
|
|
|
|
func main() {
|
|
app := fiber.New()
|
|
|
|
app.Get("/", func(c *fiber.Ctx) error {
|
|
body, _ := content.ReadFile("index.html")
|
|
c.Type("html")
|
|
return c.Send(body)
|
|
})
|
|
|
|
app.Get("/image", func(c *fiber.Ctx) error {
|
|
photos, _ := filepath.Glob(filepath.Join(imageDirectory, "*.jpg"))
|
|
width, _ := strconv.Atoi(c.Query("width", "1280"))
|
|
height, _ := strconv.Atoi(c.Query("height", "800"))
|
|
|
|
img := cropImage(photos[rand.Intn(len(photos))], width, height)
|
|
|
|
buf := new(bytes.Buffer)
|
|
jpeg.Encode(buf, img, &jpeg.Options{Quality: 100})
|
|
|
|
c.Type("jpg")
|
|
return c.SendStream(buf, buf.Len())
|
|
})
|
|
|
|
app.Listen(":3000")
|
|
}
|
|
|
|
func cropImage(imgSrc string, width, height int) image.Image {
|
|
f, err := os.Open(imgSrc)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
img, _, err := exiffix.Decode(f)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
topCrop, err := smartcrop.Crop(img, width, height)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
type subImager interface {
|
|
SubImage(image.Rectangle) image.Image
|
|
}
|
|
if si, ok := img.(subImager); ok {
|
|
return si.SubImage(topCrop)
|
|
}
|
|
return nil
|
|
}
|