Improved background jobs

jobs/avatars/Avatar.go

@@ -1,9 +1,14 @@
 package main
 
-import "image"
+import (
+	"image"
+
+	"github.com/animenotifier/arn"
+)
 
 // Avatar represents a single image and the name of the format.
 type Avatar struct {
+	User   *arn.User
 	Image  image.Image
 	Data   []byte
 	Format string

jobs/avatars/AvatarOriginalFileOutput.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"bytes"
+	"errors"
+	"image/gif"
+	"image/jpeg"
+	"image/png"
+	"io/ioutil"
+
+	"github.com/animenotifier/arn"
+	"github.com/nfnt/resize"
+)
+
+// AvatarOriginalFileOutput ...
+type AvatarOriginalFileOutput struct {
+	Directory string
+	Size      int
+}
+
+// SaveAvatar writes the original avatar to the file system.
+func (output *AvatarOriginalFileOutput) SaveAvatar(avatar *Avatar) error {
+	// Determine file extension
+	extension := ""
+
+	switch avatar.Format {
+	case "jpg", "jpeg":
+		extension = ".jpg"
+	case "png":
+		extension = ".png"
+	case "gif":
+		extension = ".gif"
+	default:
+		return errors.New("Unknown format: " + avatar.Format)
+	}
+
+	// Resize if needed
+	data := avatar.Data
+	img := avatar.Image
+
+	if img.Bounds().Dx() != output.Size {
+		img = resize.Resize(arn.AvatarSmallSize, 0, img, resize.Lanczos3)
+		buffer := new(bytes.Buffer)
+
+		var err error
+		switch extension {
+		case ".jpg":
+			err = jpeg.Encode(buffer, img, nil)
+		case ".png":
+			err = png.Encode(buffer, img)
+		case ".gif":
+			err = gif.Encode(buffer, img, nil)
+		}
+
+		if err != nil {
+			return err
+		}
+
+		data = buffer.Bytes()
+	}
+
+	// Write to file
+	fileName := output.Directory + avatar.User.ID + extension
+	return ioutil.WriteFile(fileName, data, 0644)
+}

jobs/avatars/AvatarWebPFileOutput.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"github.com/animenotifier/arn"
+	"github.com/nfnt/resize"
+)
+
+// AvatarWebPFileOutput ...
+type AvatarWebPFileOutput struct {
+	Directory string
+	Size      int
+	Quality   float32
+}
+
+// SaveAvatar writes the avatar in WebP format to the file system.
+func (output *AvatarWebPFileOutput) SaveAvatar(avatar *Avatar) error {
+	img := avatar.Image
+
+	// Resize if needed
+	if img.Bounds().Dx() != output.Size {
+		img = resize.Resize(arn.AvatarSmallSize, 0, img, resize.Lanczos3)
+	}
+
+	// Write to file
+	fileName := output.Directory + avatar.User.ID + ".webp"
+	return arn.SaveWebP(img, fileName, output.Quality)
+}

jobs/avatars/AvatarWriter.go

@@ -1,6 +1,6 @@
 package main
 
-// AvatarWriter represents a system that saves an avatar locally (in database or as a file, e.g.)
-type AvatarWriter interface {
+// AvatarOutput represents a system that saves an avatar locally (in database or as a file, e.g.)
+type AvatarOutput interface {
 	SaveAvatar(*Avatar) error
 }

jobs/avatars/FSWriter.go

@@ -1 +0,0 @@
-package main

jobs/avatars/Gravatar.go

@@ -38,6 +38,7 @@ func (source *Gravatar) GetAvatar(user *arn.User) *Avatar {
 	}
 
 	return &Avatar{
+		User:   user,
 		Image:  img,
 		Data:   data,
 		Format: format,

jobs/avatars/download.go

@@ -1,79 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io/ioutil"
-
-	"github.com/animenotifier/arn"
-	"github.com/fatih/color"
-	"github.com/parnurzeal/gorequest"
-	gravatar "github.com/ungerik/go-gravatar"
-)
-
-func findOriginalAvatar(user *arn.User) string {
-	return arn.FindFileWithExtension(
-		user.ID,
-		avatarsDirectoryOriginal,
-		[]string{
-			".jpg",
-			".png",
-			".gif",
-		},
-	)
-}
-
-func downloadAvatar(user *arn.User) bool {
-	if user.Email == "" {
-		return false
-	}
-
-	directory := avatarsDirectoryOriginal
-	fileName := directory + user.ID
-
-	// Build URL
-	url := gravatar.Url(user.Email) + "?s=" + fmt.Sprint(arn.AvatarMaxSize) + "&d=404&r=pg"
-
-	// Skip existing avatars
-	if findOriginalAvatar(user) != "" {
-		color.Yellow(user.Nick)
-		return true
-	}
-
-	// Download
-	response, data, err := gorequest.New().Get(url).EndBytes()
-
-	if err != nil {
-		color.Red(user.Nick)
-		return false
-	}
-
-	contentType := response.Header.Get("content-type")
-
-	if response.StatusCode != 200 {
-		color.Red(user.Nick)
-		return false
-	}
-
-	// Determine file extension
-	extension := ""
-
-	switch contentType {
-	case "image/jpeg":
-		extension = ".jpg"
-	case "image/png":
-		extension = ".png"
-	case "image/gif":
-		extension = ".gif"
-	case "image/webp":
-		extension = ".webp"
-	}
-
-	fileName += extension
-
-	// Write to disk
-	ioutil.WriteFile(fileName, data, 0644)
-
-	color.Green(user.Nick)
-
-	return true
-}

jobs/avatars/main.go

@@ -3,21 +3,25 @@ package main
 import (
 	"fmt"
 	"os"
+	"reflect"
 	"runtime"
 	"time"
 
+	_ "image/gif"
+	_ "image/jpeg"
+	_ "image/png"
+
 	"github.com/animenotifier/arn"
 	"github.com/fatih/color"
 )
 
 const (
 	networkRateLimit = 100 * time.Millisecond
-	avatarsDirectoryOriginal = "images/avatars/large/original/"
-	avatarsDirectoryWebP     = "images/avatars/large/webp/"
+	webPQuality      = 80
 )
 
 var avatarSources []AvatarSource
-var avatarWriters []AvatarWriter
+var avatarOutputs []AvatarOutput
 
 // Main
 func main() {
@@ -29,6 +33,28 @@ func main() {
 		&Gravatar{},
 	}
 
+	// Define the avatar outputs
+	avatarOutputs = []AvatarOutput{
+		&AvatarOriginalFileOutput{
+			Directory: "images/avatars/large/original/",
+			Size:      arn.AvatarMaxSize,
+		},
+		&AvatarOriginalFileOutput{
+			Directory: "images/avatars/small/original/",
+			Size:      arn.AvatarSmallSize,
+		},
+		&AvatarWebPFileOutput{
+			Directory: "images/avatars/large/webp/",
+			Size:      arn.AvatarMaxSize,
+			Quality:   webPQuality,
+		},
+		&AvatarWebPFileOutput{
+			Directory: "images/avatars/small/webp/",
+			Size:      arn.AvatarSmallSize,
+			Quality:   webPQuality,
+		},
+	}
+
 	// Stream of all users
 	users, _ := arn.AllUsers()
 
@@ -58,29 +84,29 @@ func StartWorkers(queue chan *arn.User, rateLimit time.Duration, work func(*arn.
 
 // Work handles a single user.
 func Work(user *arn.User) {
+	user.Avatar = ""
+
 	for _, source := range avatarSources {
 		avatar := source.GetAvatar(user)
 
 		if avatar == nil {
-			fmt.Println(color.RedString("✘"), user.Nick)
+			fmt.Println(color.RedString("✘"), reflect.TypeOf(source).Elem().Name(), user.Nick)
 			continue
 		}
 
+		for _, writer := range avatarOutputs {
+			err := writer.SaveAvatar(avatar)
+
+			if err != nil {
+				color.Red(err.Error())
+			}
+		}
+
 		fmt.Println(color.GreenString("✔"), user.Nick, "|", avatar.Format, avatar.Image.Bounds().Dx(), avatar.Image.Bounds().Dy())
-
-		for _, writer := range avatarWriters {
-			writer.SaveAvatar(avatar)
+		user.Avatar = "/+" + user.Nick + "/avatar"
+		break
 	}
 
-		return
-	}
-
-	// if downloadAvatar(user) {
-	// 	makeWebPAvatar(user)
-	// 	user.Avatar = "/+" + user.Nick + "/avatar"
-	// } else {
-	// 	user.Avatar = ""
-	// }
-
-	// user.Save()
+	// Save avatar data
+	user.Save()
 }

jobs/avatars/webp.go

@@ -1,51 +0,0 @@
-package main
-
-import (
-	_ "image/gif"
-	_ "image/jpeg"
-	_ "image/png"
-	"strings"
-
-	"github.com/animenotifier/arn"
-	"github.com/fatih/color"
-	"github.com/nfnt/resize"
-)
-
-func makeWebPAvatar(user *arn.User) {
-	baseName := findOriginalAvatar(user)
-
-	if baseName == "" {
-		return
-	}
-
-	original := avatarsDirectoryOriginal + baseName
-	outFile := avatarsDirectoryWebP + user.ID + ".webp"
-
-	err := avatarToWebP(original, outFile, 80)
-
-	if err != nil {
-		color.Red(user.Nick + " [WebP]")
-	} else {
-		color.Green(user.Nick + " [WebP]")
-	}
-}
-
-func avatarToWebP(in string, out string, quality float32) error {
-	img, _, loadErr := arn.LoadImage(in)
-
-	if loadErr != nil {
-		return loadErr
-	}
-
-	// Big avatar
-	saveErr := arn.SaveWebP(img, out, quality)
-
-	if saveErr != nil {
-		return saveErr
-	}
-
-	// Small avatar
-	smallImg := resize.Resize(arn.AvatarSmallSize, 0, img, resize.Lanczos3)
-	saveErr = arn.SaveWebP(smallImg, strings.Replace(out, "large/", "small/", 1), quality)
-	return saveErr
-}