#!/usr/bin/env python

r"""
Flash the WiPy (format, update service pack and program).

Example:

> python uniflash.py -u "C:\ti\uniflash_3.2\uniflashCLI.bat" -c "C:\VirtualBoxShared\GitHub\wipy_uniflash.usf" -p 8 -s "C:\ti\CC31xx_CC32xx_ServicePack_1.0.0.10.0\servicepack_1.0.0.10.0.bin"

or:

> python uniflash.py -u "C:\ti\uniflash_3.2\uniflashCLI.bat" -c "C:\VirtualBoxShared\GitHub\launchxl_uniflash.usf" -p 8 -s "C:\ti\CC31xx_CC32xx_ServicePack_1.0.0.10.0\servicepack_1.0.0.10.0.bin"

"""

import sys
import argparse
import subprocess


def print_exception(e):
    print("Exception: {}, on line {}".format(e, sys.exc_info()[-1].tb_lineno))


def execute(command):
    process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    cmd_log = ""

    # Poll process for new output until finished
    while True:
        nextline = process.stdout.readline()
        if nextline == "" and process.poll() != None:
            break
        sys.stdout.write(nextline)
        sys.stdout.flush()
        cmd_log += nextline

    output = process.communicate()[0]
    exitCode = process.returncode

    if exitCode == 0:
        return cmd_log
    else:
        raise ProcessException(command, exitCode, output)


def main():
    cmd_parser = argparse.ArgumentParser(
        description="Flash the WiPy and optionally run a small test on it."
    )
    cmd_parser.add_argument(
        "-u", "--uniflash", default=None, help="the path to the uniflash cli executable"
    )
    cmd_parser.add_argument(
        "-c", "--config", default=None, help="the path to the uniflash config file"
    )
    cmd_parser.add_argument("-p", "--port", default=8, help="the com serial port")
    cmd_parser.add_argument(
        "-s", "--servicepack", default=None, help="the path to the servicepack file"
    )
    args = cmd_parser.parse_args()

    output = ""
    com_port = "com=" + str(args.port)
    servicepack_path = "spPath=" + args.servicepack

    try:
        if args.uniflash == None or args.config == None:
            raise ValueError("uniflash path and config path are mandatory")
        if args.servicepack == None:
            output += execute(
                [
                    args.uniflash,
                    "-config",
                    args.config,
                    "-setOptions",
                    com_port,
                    "-operations",
                    "format",
                    "program",
                ]
            )
        else:
            output += execute(
                [
                    args.uniflash,
                    "-config",
                    args.config,
                    "-setOptions",
                    com_port,
                    servicepack_path,
                    "-operations",
                    "format",
                    "servicePackUpdate",
                    "program",
                ]
            )
    except Exception as e:
        print_exception(e)
        output = ""
    finally:
        if "Finish Executing operation: program" in output:
            print("======================================")
            print("Board programmed OK")
            print("======================================")
            sys.exit(0)
        else:
            print("======================================")
            print("ERROR: Programming failed!")
            print("======================================")
            sys.exit(1)


if __name__ == "__main__":
    main()