add --dry-run option

main.go

@@ -77,6 +77,7 @@ func main() {
 	var logout bool = false
 	var deleteFullVod bool = false
 	var forceUpload bool = false
+	var dryRun bool = false
 	var directory string = "."
 
 	for i, arg := range os.Args {
@@ -110,6 +111,9 @@ func main() {
 			case "--force":
 				forceUpload = true
 
+			case "--dry-run":
+				dryRun = true
+
 			default:
 				fmt.Fprintf(os.Stderr, "Unknown option `%s`\n", arg)
 				os.Exit(1)
@@ -273,11 +277,11 @@ func main() {
 		)
 	}
 
-	// concatenate VOD segments into full VOD
+	if (!dryRun) {
-	fullVodExists := func () bool {
 		// check if full VOD already exists with expected duration
+		fullVodExists := false
 		fullVodProbe, err := scanner.ProbeSegment(video.Filepath)
-		if err != nil { return false }
+		if err == nil {
 			video.SizeBytes = fullVodProbe.Format.Size
 			var totalLength float64 = 0
 
@@ -286,17 +290,23 @@ func main() {
 				if err != nil { continue }
 				totalLength += probe.Format.Duration
 			}
-		return math.Abs(fullVodProbe.Format.Duration - totalLength) < float64(0.1)
+			// full VOD may exist, but not be complete (interrupted concat)
-	}()
+			fullVodExists = math.Abs(fullVodProbe.Format.Duration - totalLength) < float64(0.1)
+		}
+
 		if fullVodExists {
 			log.Print("Full VOD appears to already exist- uploading this file...")
 		} else {
+			// concatenate VOD segments into full VOD
 			video.SizeBytes, err = vid.ConcatVideo(video, vodFiles, verbose)
 			if err != nil {
 				log.Fatalf("Failed to concatenate VOD segments: %v", err)
 				os.Exit(1)
 			}
 		}
+	} else {
+		log.Print("Dry run: Skipping VOD concatenation")
+	}
 
 	// youtube oauth flow
 	ctx := context.Background()
@@ -329,6 +339,7 @@ func main() {
 		log.Fatalf("Failed to save OAuth token: %v", err)
 	}
 
+	if (!dryRun) {
 		// okay actually upload now!
 		ytVideo, err := yt.UploadVideo(ctx, tokenSource, video, thumbnail, templates)
 		if err != nil {
@@ -359,6 +370,9 @@ func main() {
 				log.Fatalf("Failed to delete full VOD: %v", err)
 			}
 		}
+	} else {
+		log.Print("Dry run: Skipping video upload")
+	}
 }
 
 func initialiseDirectory(directory string) error {

res/help.txt

@@ -8,6 +8,7 @@ OPTIONS:
     --init: Initialise `directory` as a VOD directory.
     --logout: Logs out of the current YouTube account.
     -d, --deleteAfter: Deletes the full VOD after upload.
+    --dry-run: Don't upload or modify any files (Useful with -v)
     -f, --force: Force uploading the VOD, even if it already exists.
 
 SOURCE: https://codeberg.org/arimelody/vodular