import ctypes
import os

# 加載共享函式庫
# 請將 'libpostprocess.so' 替換為您實際編譯的檔案名稱 (例如: 'libpostprocess.dll' 或 'libpostprocess.dylib')
lib_path = "postprocess.so"
lib = ctypes.CDLL(lib_path)


# 設定函式參數和回傳值的資料型別
# postprocess_c 函式接收兩個 C 字串並回傳一個 C 字串
lib.postprocess_c.argtypes = [ctypes.c_char_p, ctypes.c_char_p]
lib.postprocess_c.restype = ctypes.c_char_p

def call_postprocess(query, pred_class):
    """
    呼叫 C++ postprocess 函式並處理回傳結果。
    """
    # 將 Python 字串編碼為 bytes，以符合 C++ 的 char* 參數要求
    query_bytes = query.encode('utf-8')
    pred_class_bytes = pred_class.encode('utf-8')
    
    # 呼叫 C++ 函式
    result_ptr = lib.postprocess_c(query_bytes, pred_class_bytes)
    
    # 將回傳的 C 字串解碼為 Python 字串
    if result_ptr:
        result_str = result_ptr.decode('utf-8')
        # 釋放 C++ 函式動態分配的記憶體
        return result_str
    else:
        return None

# --- 測試案例 ---

# 測試 1: 查詢空調溫度
query_1 = "請開始關頂棚遮陽簾"
pred_class_1 = "POWER_SUNSHADE"
output_1 = call_postprocess(query_1, pred_class_1)
print(f"查詢: {query_1}")
print(f"預測類別: {pred_class_1}")
print(f"結果:\n{output_1}\n")

query_1 = "麻煩關閉第一排左座前除霜"
pred_class_1 = "HVAC_DEFROSTER%false"
output_1 = call_postprocess(query_1, pred_class_1)
print(f"查詢: {query_1}")
print(f"預測類別: {pred_class_1}")
print(f"結果:\n{output_1}\n")

query_1 = "麻煩關掉遮陽簾"
pred_class_1 = "POWER_SUNSHADE"
output_1 = call_postprocess(query_1, pred_class_1)
print(f"查詢: {query_1}")
print(f"預測類別: {pred_class_1}")
print(f"結果:\n{output_1}\n")

# # 測試 1: 查詢空調溫度
# query_1 = "冷到一直打噴嚏"
# pred_class_1 = "HVAC_TEMPERATURE_SET"
# output_1 = call_postprocess(query_1, pred_class_1)
# print(f"查詢: {query_1}")
# print(f"預測類別: {pred_class_1}")
# print(f"結果:\n{output_1}\n")