From 65d98d3001591602397243d63e46682ee2d02809 Mon Sep 17 00:00:00 2001
From: guga kakhadze <guga.kakhadze12@gmail.com>
Date: Tue, 20 Jan 2026 08:36:21 +0400
Subject: [PATCH] initial version of the tags switching

---
 tags-switching/switch_tag_value_source.py | 139 ++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 tags-switching/switch_tag_value_source.py

diff --git a/tags-switching/switch_tag_value_source.py b/tags-switching/switch_tag_value_source.py
new file mode 100644
index 0000000..cdd0b63
--- /dev/null
+++ b/tags-switching/switch_tag_value_source.py
@@ -0,0 +1,139 @@
+import json
+import os
+import shutil
+from datetime import datetime
+
+# =========================================================
+# FIND INPUT JSON IN CURRENT DIRECTORY
+# =========================================================
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+
+json_files = [
+    f for f in os.listdir(SCRIPT_DIR)
+    if f.lower().endswith(".json")
+]
+
+if len(json_files) == 0:
+    raise RuntimeError("No JSON file found in script directory.")
+
+if len(json_files) > 1:
+    raise RuntimeError(
+        "Multiple JSON files found. Keep only ONE JSON file in the folder:\n"
+        + "\n".join(json_files)
+    )
+
+INPUT_JSON = os.path.join(SCRIPT_DIR, json_files[0])
+
+# Output and backup paths (same folder)
+timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+
+BACKUP_JSON = os.path.join(
+    SCRIPT_DIR,
+    "tag_export_backup_%s.json" % timestamp
+)
+
+OUTPUT_JSON = os.path.join(
+    SCRIPT_DIR,
+    "tag_export_modified_%s.json" % timestamp
+)
+
+# =========================================================
+# USER SELECTION
+# =========================================================
+
+print("")
+print("Select target tag source:")
+print("  1 = OPC")
+print("  2 = MEMORY")
+print("")
+
+choice = raw_input("Enter choice (1 or 2): ").strip()
+
+if choice == "1":
+    TARGET_MODE = "OPC"
+elif choice == "2":
+    TARGET_MODE = "MEMORY"
+else:
+    raise ValueError("Invalid selection. Must be 1 or 2.")
+
+print("Target mode:", TARGET_MODE)
+
+# =========================================================
+# BACKUP ORIGINAL FILE
+# =========================================================
+
+shutil.copy2(INPUT_JSON, BACKUP_JSON)
+
+print("Backup created:")
+print(" ", BACKUP_JSON)
+
+# =========================================================
+# JSON MODIFICATION LOGIC
+# =========================================================
+
+modified_count = 0
+
+def process_node(node):
+    global modified_count
+
+    if not isinstance(node, dict):
+        return
+
+    tag_type = node.get("tagType")
+    value_source = node.get("valueSource")
+
+    # Modify ONLY atomic tags
+    if tag_type == "AtomicTag":
+        if TARGET_MODE == "MEMORY":
+            if value_source != "memory":
+                node["valueSource"] = "memory"
+                node["opcItemPath"] = ""
+                modified_count += 1
+
+        elif TARGET_MODE == "OPC":
+            if value_source != "opc":
+                node["valueSource"] = "opc"
+                # opcItemPath preserved if it exists
+                modified_count += 1
+
+    # Recurse into child tags
+    for key in ("tags", "children"):
+        children = node.get(key)
+        if isinstance(children, list):
+            for child in children:
+                process_node(child)
+
+# =========================================================
+# LOAD → PROCESS → WRITE
+# =========================================================
+
+with open(INPUT_JSON, "r") as f:
+    data = json.load(f)
+
+if isinstance(data, list):
+    for root in data:
+        process_node(root)
+else:
+    process_node(data)
+
+with open(OUTPUT_JSON, "w") as f:
+    json.dump(data, f, indent=2)
+
+# =========================================================
+# SUMMARY
+# =========================================================
+
+print("")
+print("======================================")
+print(" Tag Source Update Complete")
+print("======================================")
+print(" Input File     :", INPUT_JSON)
+print(" Backup File    :", BACKUP_JSON)
+print(" Output File    :", OUTPUT_JSON)
+print(" Target Mode    :", TARGET_MODE)
+print(" Tags Modified  :", modified_count)
+print("======================================")
+
+if modified_count == 0:
+    print("⚠ WARNING: No tags were modified.")