split organize pipeline helpers

internal/service/organize_pipeline_scan.go

@@ -0,0 +1,78 @@
+package service
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+func organizeScanRoot(res *OrganizeResult, path string) string {
+	if res == nil {
+		if strings.TrimSpace(path) == "" {
+			return ""
+		}
+		return filepath.Dir(path)
+	}
+	var root string
+	for _, item := range res.Items {
+		if !organizeItemNeedsVisibilitySync(item) {
+			continue
+		}
+		target := strings.TrimSpace(item.Target)
+		if target == "" {
+			continue
+		}
+		dir := filepath.Dir(target)
+		if root == "" {
+			root = dir
+			continue
+		}
+		root = commonPathRoot(root, dir)
+	}
+	if root != "" {
+		return root
+	}
+	if strings.TrimSpace(path) != "" {
+		return filepath.Dir(path)
+	}
+	return strings.TrimSpace(res.DestPath)
+}
+
+func organizeItemNeedsVisibilitySync(item OrganizePreviewItem) bool {
+	switch item.Action {
+	case "organize", "replace", "reclassify", "cleanup":
+		return true
+	case "skip":
+		switch item.Reason {
+		case organizeSkipAlreadyOrganized, organizeSkipTargetExists, "duplicate exists", "target exists":
+			return true
+		}
+	}
+	return false
+}
+
+func commonPathRoot(a, b string) string {
+	a = filepath.Clean(strings.TrimSpace(a))
+	b = filepath.Clean(strings.TrimSpace(b))
+	if a == "" || a == "." {
+		return b
+	}
+	if b == "" || b == "." {
+		return a
+	}
+	if pathWithin(a, b) {
+		return b
+	}
+	if pathWithin(b, a) {
+		return a
+	}
+	for {
+		parent := filepath.Dir(a)
+		if parent == a || parent == "." {
+			return parent
+		}
+		if pathWithin(b, parent) {
+			return parent
+		}
+		a = parent
+	}
+}