import os

fru_file="frudata.txt"
internal = []
chassis = []
board = []
product = []

def array_to_string(arr):
    result = ""
    for element in arr:
        result += chr(element)
    return result

def parse_internal():
    pass

def parse_chassis():
    pass

def parse_board():
    print("")
    print("Board Field")
    board_mfg_time = board[3:5]
    
    cnt=5
    board_manufactor_length=board[cnt+1]-192
    cnt+=2
    board_manufactor=board[cnt:cnt+board_manufactor_length]
    cnt=cnt+board_manufactor_length
    
    board_product_name_length=board[cnt]-192
    cnt+=1
    board_product_name=board[cnt:cnt+board_product_name_length]
    cnt=cnt+board_product_name_length
    
    board_sn_length=board[cnt]-192
    cnt+=1
    board_sn=board[cnt:cnt+board_sn_length]
    cnt=cnt+board_sn_length
    
    board_pn_length=board[cnt]-192
    cnt+=1
    board_pn=board[cnt:cnt+board_pn_length]
    cnt=cnt+board_pn_length
    
    board_id_length=board[cnt]-192
    cnt+=1
    board_id=board[cnt:cnt+board_id_length]
    cnt=cnt+board_id_length
    
    print("Board Manufacturer : " + array_to_string(board_manufactor))
    print("Board Product Name : " + array_to_string(board_product_name))
    print("Board Serial Number: " + array_to_string(board_sn))
    print("Board Part Number  : " + array_to_string(board_pn))
    print("Board Fru File ID  : " + array_to_string(board_id))
    
    while board[cnt] != 193:
        board_OEM_length=board[cnt]-192
        cnt+=1
        board_oem=board[cnt:cnt+board_OEM_length]
        cnt=cnt+board_OEM_length
        print("Board Extra        : " + array_to_string(board_oem))

def parse_product():
    print("")
    print("Product Field")
    
    cnt=3
    
    product_manu_name_len = product[cnt] - 192
    cnt+=1
    product_manu_name=product[cnt:cnt+product_manu_name_len]
    cnt=cnt+product_manu_name_len
    
    product_product_name_len = product[cnt] - 192
    cnt+=1
    product_product_name=product[cnt:cnt+product_product_name_len]
    cnt=cnt+product_product_name_len
    
    product_pn_len = product[cnt] - 192
    cnt+=1
    product_pn=product[cnt:cnt+product_pn_len]
    cnt=cnt+product_pn_len
    
    product_version_len = product[cnt] - 192
    cnt+=1
    product_version=product[cnt:cnt+product_version_len]
    cnt=cnt+product_version_len
    
    product_sn_len = product[cnt] - 192
    cnt+=1
    product_sn=product[cnt:cnt+product_sn_len]
    cnt=cnt+product_sn_len
    
    product_asset_len = product[cnt] - 192
    cnt+=1
    product_asset=product[cnt:cnt+product_asset_len]
    cnt=cnt+product_asset_len
    
    product_id_len = product[cnt] - 192
    cnt+=1
    product_id=product[cnt:cnt+product_id_len]
    cnt=cnt+product_id_len
    
    print("Product Manufacturer : " + array_to_string(product_manu_name))
    print("Product Name         : " + array_to_string(product_product_name))
    print("Product Part Number  : " + array_to_string(product_pn))
    print("Product Version      : " + array_to_string(product_version))
    print("Product Serial Numebr: " + array_to_string(product_sn))
    print("Product Asset Tag    : " + array_to_string(product_asset))
    print("Product Fru File ID  : " + array_to_string(product_id))
    
    while product[cnt] != 193:
        product_OEM_length=product[cnt]-192
        cnt+=1
        product_oem=product[cnt:cnt+product_OEM_length]
        cnt=cnt+product_OEM_length
        print("Product Extra        : " + array_to_string(product_oem))


def parse_fru_data():
    print("===> Start Parse Fru data")
    if len(internal) > 0:
        parse_internal()
    
    if len(chassis) > 0:
        parse_chassis()
        
    if len(board) > 0:
        parse_board()
        
    if len(product) > 0:
        parse_product()

def split_fru_data(data):
    print("===> Start split fru data")
    header = data[0:8]
    internal_offset = header[1] * 8
    chassis_offset = header[2] * 8
    board_offset = header[3] * 8
    product_offset = header[4] * 8
    
    if internal_offset > 0:
        internal_data_length = data[internal_offset+1]*8
        global internal
        internal = data[internal_offset : internal_offset+internal_data_length]
    
    if chassis_offset > 0:
        chassis_data_length = data[chassis_offset+1]*8
        global chassis
        chassis = data[chassis_offset : chassis_offset+chassis_data_length ]
    
    if board_offset > 0:
        board_data_length = data[board_offset+1]*8
        global board
        board = data[board_offset : board_offset+board_data_length]
        print("board data")
        print(board)
        
    if product_offset > 0:
        product_data_length = data[product_offset+1]*8
        global product
        product = data[product_offset : product_offset+product_data_length]
        print("product data")
        print(product)
    
    print("<=== Complete split fru data")
    

def load_fru_txt_file():
    if os.path.exists(fru_file):
        print(f"{fru_file} exists.")
    else:
        print(f"{fru_file} does not exist.")
        exit(1)
    
    print("===> Start load fru file")
    result = []
    with open(fru_file, 'r') as file:
        lines = file.readlines()
        for line in lines:
            hex_numbers = line.strip().split()
            for hex_num in hex_numbers:
                decimal_num = int(hex_num, 16)
                result.append(decimal_num)
    print(result)
    print("<=== Complete load fru data")
    return result

if __name__ == "__main__":
    fru_data = load_fru_txt_file()
    split_fru_data(fru_data)
    parse_fru_data()