import json
import os
import glob
import csv

def main():
    uploads_dir = "backend/uploads"
    if not os.path.exists(uploads_dir):
        uploads_dir = "uploads"

    csv_path = os.path.join(uploads_dir, "sku_master.csv")
    if not os.path.exists(csv_path):
        print(f"Error: sku_master.csv not found at {csv_path}")
        return

    # Load SKU map
    sku_map = {}
    with open(csv_path, "r", encoding="utf-8") as f:
        reader = csv.reader(f)
        header = next(reader, None) # skip header
        for row in reader:
            if len(row) >= 2:
                sku_map[row[0].strip()] = row[1].strip()

    print(f"Loaded {len(sku_map)} SKU mappings from master list.")

    manual_pattern = os.path.join(uploads_dir, "manual_label_*.json")
    manual_files = glob.glob(manual_pattern)
    modified_files = 0
    filled_items = 0

    for mf in manual_files:
        try:
            with open(mf, "r", encoding="utf-8") as f:
                data = json.load(f)

            is_modified = False
            items = data.get("items", [])
            for item in items:
                sku = item.get("kodeBarang", "").strip()
                name = item.get("namaBarang", "").strip()
                
                # If name is empty, try to fill it
                if not name and sku:
                    master_name = sku_map.get(sku)
                    if master_name:
                        item["namaBarang"] = master_name
                        is_modified = True
                        filled_items += 1

            if is_modified:
                with open(mf, "w", encoding="utf-8") as f:
                    json.dump(data, f, indent=2, ensure_ascii=False)
                modified_files += 1

        except Exception as e:
            print(f"Error processing manual label {mf}: {e}")

    print(f"Finished item name fill process.")
    print(f"Files updated: {modified_files}")
    print(f"Item names filled: {filled_items}")

if __name__ == "__main__":
    main()