add internal/app/ship.go

internal/app/ship.go

@@ -0,0 +1,33 @@
+package app
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+// scpArgs builds the scp command line. Files are uploaded in the given order;
+// callers pass the playlist LAST so stream links never 404 before the files.
+func scpArgs(files []string, target, keyPath string) []string {
+	args := []string{"-o", "StrictHostKeyChecking=accept-new", "-q"}
+	if keyPath != "" {
+		args = append(args, "-i", keyPath)
+	}
+	args = append(args, files...)
+	args = append(args, target)
+	return args
+}
+
+// Ship uploads files to target (user@host:/path/) via scp.
+func Ship(files []string, target, keyPath string) error {
+	if len(files) == 0 {
+		return nil
+	}
+	if target == "" {
+		return fmt.Errorf("ship target not configured")
+	}
+	out, err := exec.Command("scp", scpArgs(files, target, keyPath)...).CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("scp to %s: %w: %s", target, err, out)
+	}
+	return nil
+}