Improved avatar generator

jobs/avatars/FileSystem.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bytes"
+	"image"
+	"io/ioutil"
+
+	"github.com/animenotifier/arn"
+)
+
+var fileSystemLog = avatarLog.NewChannel("SSD")
+
+// FileSystem loads avatar from the local filesystem.
+type FileSystem struct {
+	Directory string
+}
+
+// GetAvatar returns the local image for the user.
+func (source *FileSystem) GetAvatar(user *arn.User) *Avatar {
+	fullPath := arn.FindFileWithExtension(user.ID, source.Directory, arn.OriginalImageExtensions)
+
+	if fullPath == "" {
+		fileSystemLog.Error(user.Nick, "Not found on file system")
+		return nil
+	}
+
+	data, err := ioutil.ReadFile(fullPath)
+
+	if err != nil {
+		fileSystemLog.Error(user.Nick, err)
+		return nil
+	}
+
+	// Decode
+	img, format, decodeErr := image.Decode(bytes.NewReader(data))
+
+	if decodeErr != nil {
+		fileSystemLog.Error(user.Nick, decodeErr)
+		return nil
+	}
+
+	return &Avatar{
+		User:   user,
+		Image:  img,
+		Data:   data,
+		Format: format,
+	}
+}