adds support for file exteions and directory ignores to the local scanner

still some todos left

internal/app/app.go

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
+ * Copyright (C) 2020 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
  * This application is licensed under GPLv2. See the LICENSE file in the root directory of the project.
  */
 
@@ -36,7 +36,12 @@ func Run() {
 		logErrorAndExit(err, 2)
 	}
 
-	filesystemNodes, err := localFileStructure.ScanLocalFileStructure(context.localRootPath)
+	//TODO: make params here as flags
+	supportedExtensions := make([]string, 0)
+	supportedExtensions = append(supportedExtensions, "jpg")
+	supportedExtensions = append(supportedExtensions, "png")
+
+	filesystemNodes, err := localFileStructure.ScanLocalFileStructure(context.localRootPath, supportedExtensions, make([]string,0))
 	if err != nil {
 		logErrorAndExit(err, 3)
 	}

internal/pkg/localFileStructure/ScanLocalFileStructure_test.go

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
+ * Copyright (C) 2020 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
  * This application is licensed under GPLv2. See the LICENSE file in the root directory of the project.
  */
 
@@ -8,20 +8,67 @@ package localFileStructure
 import "testing"
 
 func Test_ScanLocalFileStructure_should_find_testfile(t *testing.T) {
+	supportedExtensions := make([]string, 0)
+	supportedExtensions = append(supportedExtensions, "jpg")
 
-	images, err := ScanLocalFileStructure("../../../test/")
+	images, err := ScanLocalFileStructure("../../../test/", supportedExtensions, make([]string, 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(images) != 2 { // 1x folder, 1x image
+		t.Error("Did not find expected testfiles. Expected at least one!")
+	}
+
+	containsTestImage := false
+	for _, img := range images {
+		if img.Name == "testimage.jpg" {
+			containsTestImage = true
+		}
+	}
+
+	if !containsTestImage {
+		t.Errorf("Did not find the expected testimage.")
+	}
+}
+
+func Test_ScanLocalFileStructure_should_ignore_test_directory(t *testing.T) {
+	supportedExtensions := make([]string, 0)
+	supportedExtensions = append(supportedExtensions, "jpg")
+
+	ignores := make([]string, 0)
+	ignores = append(ignores, "images")
+	images, err := ScanLocalFileStructure("../../../test/", supportedExtensions, ignores)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(images) != 0 {
+		t.Error("Did find expected testfiles. Expected no files as test folder is excluded!")
+	}
+}
+
+func Test_ScanLocalFileStructure_should_not_find_jpg_when_only_png_supported(t *testing.T) {
+	supportedExtensions := make([]string, 0)
+	supportedExtensions = append(supportedExtensions, "png")
+
+	images, err := ScanLocalFileStructure("../../../test/", supportedExtensions, make([]string, 0))
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	if len(images) != 1 {
-		t.Error("Did not find expected testfiles. Expected at least one!")
+		t.Error("Did find expected testfiles. Expected no files as extension is not supported!")
 	}
 
+	containsTestImage := false
 	for _, img := range images {
-		if img.Name != "testimage.jpg" {
-			t.Errorf("Did not find the expected testimage.")
+		if img.Name == "testimage.jpg" {
+			containsTestImage = true
 		}
 	}
 
+	if containsTestImage {
+		t.Errorf("Did find the testimage. This should not happen as png is searched but jpg found")
+	}
 }

internal/pkg/localFileStructure/filesystemScanner.go

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
+ * Copyright (C) 2020 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
  * This application is licensed under GPLv2. See the LICENSE file in the root directory of the project.
  */
 
@@ -26,12 +26,22 @@ func (n *FilesystemNode) String() string {
 	return fmt.Sprintf("FilesystemNode: %s", n.Path)
 }
 
-func ScanLocalFileStructure(path string) (map[string]*FilesystemNode, error) {
+func ScanLocalFileStructure(path string, extensions []string, ignoreFolders []string) (map[string]*FilesystemNode, error) {
 	fullPathRoot, err := filepath.Abs(path)
 	if err != nil {
 		return nil, err
 	}
 
+	ignoredDirectoriesMap := make(map[string]struct{}, len(ignoreFolders))
+	for _, ignoredFolder := range ignoreFolders {
+		ignoredDirectoriesMap[strings.ToLower(ignoredFolder)] = struct{}{}
+	}
+
+	extensionsMap := make(map[string]struct{}, len(extensions))
+	for _, extension := range extensions {
+		extensionsMap["."+strings.ToLower(extension)] = struct{}{}
+	}
+
 	logrus.Infof("Scanning %s for images...", fullPathRoot)
 
 	fileMap := make(map[string]*FilesystemNode)
@@ -49,11 +59,19 @@ func ScanLocalFileStructure(path string) (map[string]*FilesystemNode, error) {
 			return nil
 		}
 
+		_, FolderIsIgnored := ignoredDirectoriesMap[strings.ToLower(info.Name())]
+		if FolderIsIgnored && info.IsDir() {
+			logrus.Tracef("Skipping ignored directory %s", path)
+			return filepath.SkipDir
+		}
+
 		extension := strings.ToLower(filepath.Ext(path))
-		if extension != ".jpg" && extension != ".png" && !info.IsDir() {
+		_, extensionSupported := extensionsMap[extension]
+		if !extensionSupported && !info.IsDir() {
 			return nil
 		}
 
+		//TODO: Add code to strip directories at the end of the path (e.g. /rootdir/eventname/png/file.png -> eventname/file.png
 		key := strings.Replace(path, fullPathReplace, "", 1)
 
 		fileMap[path] = &FilesystemNode{