#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import datetime
import fileinput
import re
import sys
import serial
import time
import xmodem
import os
import binascii
from log import myprint
from log import log_init
from bin_to_hex import bin_to_hex_file


def init_send(s_port:serial.Serial, send_str):
    s_info = bytearray()
    while True:
        s_port.write(send_str)
        time.sleep(0.1)
        s_info += s_port.read(1)
        bytes2read = s_port.in_waiting
        tmp = s_port.read(bytes2read)
        s_info += tmp
        if(s_info.find(b"Recieving RAM-IMAGE in xmodem : C")>=0):
            m_ram=True
        else:
            m_ram=False

        if m_ram:
            myprint ("Program enters transmission mode...")
            break


def burn_ram_bin(x_modem:xmodem.XMODEM, r_file):
    global trans_time_0
    stime = datetime.datetime.now()
    myprint ("Transferring %s..." % r_file)
    try:
        stream = open(r_file, 'rb')
    except Exception:
        myprint("Cannot load file, please check the file path and retry. Press <enter> to exit")
        sys.exit()

    xmodem_send = x_modem.send(stream, callback=download_callback)
    etime = datetime.datetime.now()
    trans_time_0 = (etime - stime).seconds
    myprint ("\nTransferring %s result: %s, consuming time: %s s \n" % (r_file, xmodem_send, trans_time_0))

def burn_flash_bin(s_port:serial.Serial, x_modem:xmodem.XMODEM, f_file):
    global trans_time_1
    s_info = bytearray()
    while True:
        bytes2read = s_port.in_waiting
        tmp = s_port.read(bytes2read)
        if(len(tmp)==0):
            continue
        print_device_str(tmp)
        s_info += tmp
        if(s_info.find(b'C')>=0 and bytes2read==1):
            m_flash=True
        else:
            m_flash=False
        if(s_info.find(b"Updating done, PLS reboot the device...")>=0):
            m_done=True
        else:
            m_done=False

        if m_flash:
            myprint (r"Recieving FLASH-IMAGE in xmodem : C")
            s_info = bytearray()
            stime = datetime.datetime.now()
            myprint ("Transferring %s..." % f_file)
            try:
                stream = open(f_file, 'rb')
            except Exception:
                myprint("Cannot load file, please check the file path and retry. Press <enter> to exit")
                sys.exit()

            xmodem_send = x_modem.send(stream, quiet=True, callback=download_callback)
            etime = datetime.datetime.now()
            trans_time_1 = (etime - stime).seconds
            myprint ("\nTransferring %s result: %s, consuming time: %d s \n" % (f_file,xmodem_send, trans_time_1))
        elif m_done:
            myprint("Update done.")
            break
        else:
            pass


def upload_callback(total_packets, success_count, error_count, packet_size):
    if total_packets % 10 == 0:
        sys.stdout.write('.')
        sys.stdout.flush()


def download_callback(total_packets, success_count, error_count):
    if total_packets % 10 == 0:
        sys.stdout.write('.')
        sys.stdout.flush()

# 打印串口收到的字符
def print_device_str(data:bytearray):
    data:list[bytearray]=data.split(b"\r\n")
    for item in data:
        try:
            d=item.decode('utf-8')
            myprint(d.strip())
        except Exception as e:
            myprint(f" {item.hex()}")

# 上传固件
def upload_bin(x_modem:xmodem.XMODEM, w_file):
    global trans_time_0
    stime = datetime.datetime.now()
    myprint ("Transferring %s..." % w_file)
    try:
        stream = open(w_file, 'wb+')
    except Exception:
        myprint("Cannot load file, please check the file path and retry. Press <enter> to exit")
        sys.exit()

    xmodem_send = x_modem.recv(stream, callback=upload_callback)
    etime = datetime.datetime.now()
    trans_time_0 = (etime - stime).seconds
    myprint ("\nTransferring ram.bin result: %s, consuming time: %s s \n" % (xmodem_send, trans_time_0))




def getc(size, timeout=1):
    data=ser.read(size)
    return data or None


def putc(data, timeout=1):
    ser.write(data)
    time.sleep(0.03)






_work_dir='work'
if not os.path.exists(_work_dir):
    os.mkdir(_work_dir)


def calc_log_file_name():
    log_file=sys.argv[1].split('.')[0]+'.log'
    return os.path.join(_work_dir,log_file)

def calc_upload_name():
    name=sys.argv[1]
    return os.path.join(_work_dir,name)

def calc_hex_name():
    name=sys.argv[1]+'.txt'
    return os.path.join(_work_dir,name)

def calc_flash_info_name():
    name=sys.argv[1].split('.')[0]+'.info'
    return os.path.join(_work_dir,name)




# 上传固件
def upload_fun():
    # 显示flash信息
    ser.write(b"f i\n")
    time.sleep(0.5)
    ser_read_data=ser.read(4096)
    print_device_str(ser_read_data)
    with open(calc_flash_info_name(),mode='w+',encoding='utf-8') as f:
        f.writelines(ser_read_data.decode('utf-8').split('\r\n'))
    # 显示image信息
    ser.write(b"f s\n")
    time.sleep(0.5)
    ser_read_data=ser.read(4096)
    print_device_str(ser_read_data)
    with open(calc_flash_info_name(),mode='a+',encoding='utf-8') as f:
        f.writelines(ser_read_data.decode('utf-8').split('\r\n'))
    # 上传整个镜像
    ser.write(b"fw u d all\n")
    time.sleep(0.5)
    myprint(ser.read(4096).decode('utf-8'))
    upload_bin(modem,calc_upload_name())

    myprint ("Total transmission time: %s s" % str(trans_time_0+trans_time_1))
    myprint("Start transform bin to hex.")
    bin_to_hex_file(calc_upload_name(), calc_hex_name())
    myprint("Transform to hex end.")


# 烧录固件
def burn_fun():
    time.sleep(3)
    ser_read_data=ser.read(4096)
    print_device_str(ser_read_data)
    ser.baudrate=nb_rate

    burn_flash_bin(ser, modem, iot_flash_file)
    myprint ("Total transmission time: %s s" % str(trans_time_0+trans_time_1))
    time.sleep(3)
    ser_read_data=ser.read(4096)
    print_device_str(ser_read_data)




# kunlun.py [upload.bin]
if __name__ == '__main__':
    if(len(sys.argv)<2):
        print("param too less")
        exit(-1)

    log_init(calc_log_file_name())
    exit_flag = 0
    trans_time_0, trans_time_1 = 0, 0
    config_file = r"xmodem_config.txt"
    init_str, sp_num, b_rate, nb_rate, ram_file, iot_flash_file, ser = None, None, None, None, None, None, None
    for eachline in fileinput.FileInput(config_file):
        m_info = re.match(r"(\w+)\s*=\s*(.+)", eachline)
        if m_info:
            if m_info.group(1) == "init_str":
                init_str = m_info.group(2)
            elif m_info.group(1) == "serial_port_num":
                sp_num = int(m_info.group(2))
            elif m_info.group(1) == "baud_rate":
                b_rate = int(m_info.group(2))
            elif m_info.group(1) == "new_baud_rate":
                nb_rate = int(m_info.group(2))
            elif m_info.group(1) == "ram_file":
                ram_file = m_info.group(2)
            elif m_info.group(1) == "iot_flash_file":
                iot_flash_file = m_info.group(2)
            else:
                pass

    try:
        ser = serial.Serial(port='COM' + str(sp_num), baudrate=b_rate, timeout=0.3)
    except Exception:
        myprint("Serial Port COM%s Conflicts!!! Press <enter> to Close it and retry..." % str(sp_num))
        sys.exit()
    modem = xmodem.XMODEM(getc, putc, mode='xmodem1k')

    # 发送启动字符让设备进入xmodem模式
    init_send(ser, init_str.encode("utf-8"))
    burn_ram_bin(modem, ram_file)
    # burn_ram_bin(modem, "kl3_ram_build.bin")

    upload_fun()
    # burn_fun()