#!/usr/bin/env python
#######################################
#
# Marlin 3D Printer Firmware
# Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
#
# Based on Sprinter and grbl.
# Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#######################################

#######################################
#
# Revision: 2.1.0
#
# Description: script to automate PlatformIO builds
# CLI:  python auto_build.py build_option
#    build_option (required)
#        build      executes ->  platformio run -e  target_env
#        clean      executes ->  platformio run --target clean -e  target_env
#        upload     executes ->  platformio run --target upload -e  target_env
#        traceback  executes ->  platformio run --target upload -e  target_env
#        program    executes ->  platformio run --target program -e  target_env
#        test       executes ->  platformio test upload -e  target_env
#        remote     executes ->  platformio remote run --target upload -e  target_env
#        debug      executes ->  platformio debug -e  target_env
#
# 'traceback' just uses the debug variant of the target environment if one exists
#
#######################################

#######################################
#
# General program flow
#
#  1. Scans Configuration.h for the motherboard name and Marlin version.
#  2. Scans pins.h for the motherboard.
#       returns the CPU(s) and platformio environment(s) used by the motherboard
#  3. If further info is needed then a popup gets it from the user.
#  4. The OUTPUT_WINDOW class creates a window to display the output of the PlatformIO program.
#  5. A thread is created by the OUTPUT_WINDOW class in order to execute the RUN_PIO function.
#  6. The RUN_PIO function uses a subprocess to run the CLI version of PlatformIO.
#  7. The "iter(pio_subprocess.stdout.readline, '')" function is used to stream the output of
#     PlatformIO back to the RUN_PIO function.
#  8. Each line returned from PlatformIO is formatted to match the color coding seen in the
#     PlatformIO GUI.
#  9. If there is a color change within a line then the line is broken at each color change
#     and sent separately.
# 10. Each formatted segment (could be a full line or a split line) is put into the queue
#     IO_queue as it arrives from the platformio subprocess.
# 11. The OUTPUT_WINDOW class periodically samples IO_queue.  If data is available then it
#     is written to the window.
# 12. The window stays open until the user closes it.
# 13. The OUTPUT_WINDOW class continues to execute as long as the window is open.  This allows
#     copying, saving, scrolling of the window.  A right click popup is available.
#
#######################################

from __future__ import print_function
from __future__ import division

import sys
import os

pwd = os.getcwd()  # make sure we're executing from the correct directory level
pwd = pwd.replace('\\', '/')
if 0 <= pwd.find('buildroot/share/atom'):
  pwd = pwd[:pwd.find('buildroot/share/atom')]
  os.chdir(pwd)
print('pwd: ', pwd)

num_args = len(sys.argv)
if num_args > 1:
  build_type = str(sys.argv[1])
else:
  print('Please specify build type')
  exit()

print('build_type:  ', build_type)

print('\nWorking\n')

python_ver = sys.version_info[0]  # major version - 2 or 3

print("python version " + str(sys.version_info[0]) + "." + str(sys.version_info[1]) + "." + str(sys.version_info[2]))

import platform
current_OS = platform.system()

#globals
target_env = ''
board_name = ''

from datetime import datetime, date, time

#########
#  Python 2 error messages:
#    Can't find a usable init.tcl in the following directories ...
#    error "invalid command name "tcl_findLibrary""
#
#  Fix for the above errors on my Win10 system:
#    search all init.tcl files for the line "package require -exact Tcl" that has the highest 8.5.x number
#    copy it into the first directory listed in the error messages
#    set the environmental variables TCLLIBPATH and TCL_LIBRARY to the directory where you found the init.tcl file
#    reboot
#########

##########################################################################################
#
# popup to get input from user
#
##########################################################################################

def get_answer(board_name, cpu_label_txt, cpu_a_txt, cpu_b_txt):

  if python_ver == 2:
    import Tkinter as tk
  else:
    import tkinter as tk

  def CPU_exit_3():  # forward declare functions
    CPU_exit_3_()

  def got_answer():
    got_answer_()

  def kill_session():
    kill_session_()

  root_get_answer = tk.Tk()
  root_get_answer.title('')
  #root_get_answer.withdraw()
  #root_get_answer.deiconify()
  root_get_answer.attributes("-topmost", True)

  def disable_event():
    pass

  root_get_answer.protocol("WM_DELETE_WINDOW", disable_event)
  root_get_answer.resizable(False, False)

  root_get_answer.radio_state = 1  # declare variables used by TK and enable

  global get_answer_val
  get_answer_val = 2  # return get_answer_val, set default to match radio_state default

  radio_state = tk.IntVar()
  radio_state.set(get_answer_val)

  l1 = tk.Label(text=board_name, fg="light green", bg="dark green",
                font="default 14 bold").grid(row=0, columnspan=2, sticky='EW', ipadx=2, ipady=2)

  l2 = tk.Label(text=cpu_label_txt).grid(row=1, pady=4, columnspan=2, sticky='EW')

  b4 = tk.Radiobutton(
    text=cpu_a_txt,
    fg="black",
    bg="lightgray",
    relief=tk.SUNKEN,
    selectcolor="green",
    variable=radio_state,
    value=1,
    indicatoron=0,
    command=CPU_exit_3
  ).grid(row=2, pady=1, ipady=2, ipadx=10, columnspan=2)

  b5 = tk.Radiobutton(
    text=cpu_b_txt,
    fg="black",
    bg="lightgray",
    relief=tk.SUNKEN,
    selectcolor="green",
    variable=radio_state,
    value=2,
    indicatoron=0,
    command=CPU_exit_3
  ).grid(row=3, pady=1, ipady=2, ipadx=10, columnspan=2)  # use same variable but inverted so they will track

  b6 = tk.Button(text="Cancel", fg="red", command=kill_session).grid(row=4, column=0, padx=4, pady=4, ipadx=2, ipady=2)

  b7 = tk.Button(text="Continue", fg="green", command=got_answer).grid(row=4, column=1, padx=4, pady=4, ipadx=2, ipady=2)

  def got_answer_():
    root_get_answer.destroy()

  def CPU_exit_3_():
    global get_answer_val
    get_answer_val = radio_state.get()

  def kill_session_():
    raise SystemExit(0)  # kill everything

  root_get_answer.mainloop()

# end - get answer


#
# move custom board definitions from project folder to PlatformIO
#
def resolve_path(path):
  import os

  # turn the selection into a partial path

  if 0 <= path.find('"'):
    path = path[path.find('"'):]
    if 0 <= path.find(', line '):
      path = path.replace(', line ', ':')
    path = path.replace('"', '')

  # get line and column numbers
  line_num = 1
  column_num = 1
  line_start = path.find(':', 2)  # use 2 here so don't eat Windows full path
  column_start = path.find(':', line_start + 1)
  if column_start == -1:
    column_start = len(path)
  column_end = path.find(':', column_start + 1)
  if column_end == -1:
    column_end = len(path)
  if 0 <= line_start:
    line_num = path[line_start + 1:column_start]
    if line_num == '':
      line_num = 1
  if column_start != column_end:
    column_num = path[column_start + 1:column_end]
    if column_num == '':
      column_num = 0

  index_end = path.find(',')
  if 0 <= index_end:
    path = path[:index_end]  # delete comma and anything after
  index_end = path.find(':', 2)
  if 0 <= index_end:
    path = path[:path.find(':', 2)]  # delete the line number and anything after

  path = path.replace('\\', '/')

  if 1 == path.find(':') and current_OS == 'Windows':
    return path, line_num, column_num  # found a full path - no need for further processing
  elif 0 == path.find('/') and (current_OS == 'Linux' or current_OS == 'Darwin'):
    return path, line_num, column_num  # found a full path - no need for further processing

  else:

    # resolve as many '../' as we can
    while 0 <= path.find('../'):
      end = path.find('../') - 1
      start = path.find('/')
      while 0 <= path.find('/', start) and end > path.find('/', start):
        start = path.find('/', start) + 1
      path = path[0:start] + path[end + 4:]

  # this is an alternative to the above - it just deletes the '../' section
  # start_temp = path.find('../')
  # while 0 <= path.find('../',start_temp):
  #   start = path.find('../',start_temp)
  #   start_temp = start  + 1
  # if 0 <= start:
  #   path = path[start + 2 : ]

    start = path.find('/')
    if start != 0:  # make sure path starts with '/'
      while 0 == path.find(' '):  # eat any spaces at the beginning
        path = path[1:]
      path = '/' + path

    if current_OS == 'Windows':
      search_path = path.replace('/', '\\')  # os.walk uses '\' in Windows
    else:
      search_path = path

    start_path = os.path.abspath('')

    # search project directory for the selection
    found = False
    full_path = ''
    for root, directories, filenames in os.walk(start_path):
      for filename in filenames:
        if 0 <= root.find('.git'):  # don't bother looking in this directory
          break
        full_path = os.path.join(root, filename)
        if 0 <= full_path.find(search_path):
          found = True
          break
      if found:
        break

    return full_path, line_num, column_num

# end - resolve_path


#
# Open the file in the preferred editor at the line & column number
#   If the preferred editor isn't already running then it tries the next.
#   If none are open then the system default is used.
#
# Editor order:
#   1. Notepad++  (Windows only)
#   2. Sublime Text
#   3. Atom
#   4. System default (opens at line 1, column 1 only)
#
def open_file(path):
  import subprocess
  file_path, line_num, column_num = resolve_path(path)

  if file_path == '':
    return

  if current_OS == 'Windows':

    editor_note = subprocess.check_output('wmic process where "name=' + "'notepad++.exe'" + '" get ExecutablePath')
    editor_sublime = subprocess.check_output('wmic process where "name=' + "'sublime_text.exe'" + '" get ExecutablePath')
    editor_atom = subprocess.check_output('wmic process where "name=' + "'atom.exe'" + '" get ExecutablePath')

    if 0 <= editor_note.find('notepad++.exe'):
      start = editor_note.find('\n') + 1
      end = editor_note.find('\n', start + 5) - 4
      editor_note = editor_note[start:end]
      command = file_path, ' -n' + str(line_num), ' -c' + str(column_num)
      subprocess.Popen([editor_note, command])

    elif 0 <= editor_sublime.find('sublime_text.exe'):
      start = editor_sublime.find('\n') + 1
      end = editor_sublime.find('\n', start + 5) - 4
      editor_sublime = editor_sublime[start:end]
      command = file_path + ':' + line_num + ':' + column_num
      subprocess.Popen([editor_sublime, command])

    elif 0 <= editor_atom.find('atom.exe'):
      start = editor_atom.find('\n') + 1
      end = editor_atom.find('\n', start + 5) - 4
      editor_atom = editor_atom[start:end]
      command = file_path + ':' + str(line_num) + ':' + str(column_num)
      subprocess.Popen([editor_atom, command])

    else:
      os.startfile(resolve_path(path))  # open file with default app

  elif current_OS == 'Linux':

    command = file_path + ':' + str(line_num) + ':' + str(column_num)
    index_end = command.find(',')
    if 0 <= index_end:
      command = command[:index_end]  # sometimes a comma magically appears, don't want it
    running_apps = subprocess.Popen('ps ax -o cmd', stdout=subprocess.PIPE, shell=True)
    (output, err) = running_apps.communicate()
    temp = output.split('\n')

    def find_editor_linux(name, search_obj):
      for line in search_obj:
        if 0 <= line.find(name):
          path = line
          return True, path
      return False, ''

    (success_sublime, editor_path_sublime) = find_editor_linux('sublime_text', temp)
    (success_atom, editor_path_atom) = find_editor_linux('atom', temp)

    if success_sublime:
      subprocess.Popen([editor_path_sublime, command])

    elif success_atom:
      subprocess.Popen([editor_path_atom, command])

    else:
      os.system('xdg-open ' + file_path)

  elif current_OS == 'Darwin':  # MAC

    command = file_path + ':' + str(line_num) + ':' + str(column_num)
    index_end = command.find(',')
    if 0 <= index_end:
      command = command[:index_end]  # sometimes a comma magically appears, don't want it
    running_apps = subprocess.Popen('ps axwww -o command', stdout=subprocess.PIPE, shell=True)
    (output, err) = running_apps.communicate()
    temp = output.split('\n')

    def find_editor_mac(name, search_obj):
      for line in search_obj:
        if 0 <= line.find(name):
          path = line
          if 0 <= path.find('-psn'):
            path = path[:path.find('-psn') - 1]
          return True, path
      return False, ''

    (success_sublime, editor_path_sublime) = find_editor_mac('Sublime', temp)
    (success_atom, editor_path_atom) = find_editor_mac('Atom', temp)

    if success_sublime:
      subprocess.Popen([editor_path_sublime, command])

    elif success_atom:
      subprocess.Popen([editor_path_atom, command])

    else:
      os.system('open ' + file_path)

# end - open_file


# Get the last build environment
def get_build_last():
  env_last = ''
  DIR_PWD = os.listdir('.')
  if '.pio' in DIR_PWD:
    date_last = 0.0
    DIR__pioenvs = os.listdir('.pio')
    for name in DIR__pioenvs:
      if 0 <= name.find('.') or 0 <= name.find('-'):  # skip files in listing
        continue
      DIR_temp = os.listdir('.pio/build/' + name)
      for names_temp in DIR_temp:

        if 0 == names_temp.find('firmware.'):
          date_temp = os.path.getmtime('.pio/build/' + name + '/' + names_temp)
          if date_temp > date_last:
            date_last = date_temp
            env_last = name
  return env_last


# Get the board being built from the Configuration.h file
#   return: board name, major version of Marlin being used (1 or 2)
def get_board_name():
  board_name = ''
  # get board name

  with open('Marlin/Configuration.h', 'r') as myfile:
    Configuration_h = myfile.read()

  Configuration_h = Configuration_h.split('\n')
  Marlin_ver = 0  # set version to invalid number
  for lines in Configuration_h:
    if 0 == lines.find('#define CONFIGURATION_H_VERSION 01'):
      Marlin_ver = 1
    if 0 == lines.find('#define CONFIGURATION_H_VERSION 02'):
      Marlin_ver = 2
    board = lines.find(' BOARD_') + 1
    motherboard = lines.find(' MOTHERBOARD ') + 1
    define = lines.find('#define ')
    comment = lines.find('//')
    if (comment == -1 or comment > board) and \
      board > motherboard and \
      motherboard > define and \
      define >= 0 :
      spaces = lines.find(' ', board)  # find the end of the board substring
      if spaces == -1:
        board_name = lines[board:]
      else:
        board_name = lines[board:spaces]
      break

  return board_name, Marlin_ver


# extract first environment name found after the start position
#   return: environment name and position to start the next search from
def get_env_from_line(line, start_position):
  env = ''
  next_position = -1
  env_position = line.find('env:', start_position)
  if 0 < env_position:
    next_position = line.find(' ', env_position + 4)
    if 0 < next_position:
      env = line[env_position + 4:next_position]
    else:
      env = line[env_position + 4:]  # at the end of the line
  return env, next_position


# scan pins.h for board name and return the environment(s) found
def get_starting_env(board_name_full, version):
  # get environment starting point

  if version == 1:
    path = 'Marlin/pins.h'
  if version == 2:
    path = 'Marlin/src/pins/pins.h'
  with open(path, 'r') as myfile:
    pins_h = myfile.read()

  env_A = ''
  env_B = ''
  env_C = ''

  board_name = board_name_full[6:]  # only use the part after "BOARD_" since we're searching the pins.h file
  pins_h = pins_h.split('\n')
  environment = ''
  board_line = ''
  cpu_A = ''
  cpu_B = ''
  i = 0
  list_start_found = False
  for lines in pins_h:
    i = i + 1  # i is always one ahead of the index into pins_h
    if 0 < lines.find("Unknown MOTHERBOARD value set in Configuration.h"):
      break  #  no more
    if 0 < lines.find('1280'):
      list_start_found = True
    if list_start_found == False:  # skip lines until find start of CPU list
      continue
    board = lines.find(board_name)
    comment_start = lines.find('// ')
    cpu_A_loc = comment_start
    cpu_B_loc = 0
    if board > 0:  # need to look at the next line for environment info
      cpu_line = pins_h[i]
      comment_start = cpu_line.find('// ')
      env_A, next_position = get_env_from_line(cpu_line, comment_start)  # get name of environment & start of search for next
      env_B, next_position = get_env_from_line(cpu_line, next_position)  # get next environment, if it exists
      env_C, next_position = get_env_from_line(cpu_line, next_position)  # get next environment, if it exists
      break
  return env_A, env_B, env_C


# Scan input string for CPUs that users may need to select from
#   return: CPU name
def get_CPU_name(environment):
  CPU_list = ('1280', '2560', '644', '1284', 'LPC1768', 'DUE')
  CPU_name = ''
  for CPU in CPU_list:
    if 0 < environment.find(CPU):
      return CPU


# get environment to be used for the build
#  return: environment
def get_env(board_name, ver_Marlin):

  def no_environment():
    print('ERROR - no environment for this board')
    print(board_name)
    raise SystemExit(0)  # no environment so quit

  def invalid_board():
    print('ERROR - invalid board')
    print(board_name)
    raise SystemExit(0)  # quit if unable to find board

  CPU_question = (('1280', '2560', '1280 or 2560 CPU?'), ('644', '1284', '644 or 1284 CPU?'))

  if 0 < board_name.find('MELZI'):
    get_answer(
      board_name, " Which flavor of Melzi? ", "Melzi (Optiboot bootloader)", "Melzi                                      "
    )
    if 1 == get_answer_val:
      target_env = 'melzi_optiboot'
    else:
      target_env = 'melzi'
  else:
    env_A, env_B, env_C = get_starting_env(board_name, ver_Marlin)

    if env_A == '':
      no_environment()
    if env_B == '':
      return env_A  # only one environment so finished

    CPU_A = get_CPU_name(env_A)
    CPU_B = get_CPU_name(env_B)

    for item in CPU_question:
      if CPU_A == item[0]:
        get_answer(board_name, item[2], item[0], item[1])
        if 2 == get_answer_val:
          target_env = env_B
        else:
          target_env = env_A
        return target_env

    if env_A == 'LPC1768':
      if build_type == 'traceback' or (build_type == 'clean' and get_build_last() == 'LPC1768_debug_and_upload'):
        target_env = 'LPC1768_debug_and_upload'
      else:
        target_env = 'LPC1768'
    elif env_A == 'DUE':
      target_env = 'DUE'
      if build_type == 'traceback' or (build_type == 'clean' and get_build_last() == 'DUE_debug'):
        target_env = 'DUE_debug'
      elif env_B == 'DUE_USB':
        get_answer(board_name, 'DUE Download Port?', '(Native) USB port', 'Programming port')
        if 1 == get_answer_val:
          target_env = 'DUE_USB'
        else:
          target_env = 'DUE'
    elif env_A == 'STM32F103RC_btt' or env_A == 'STM32F103RE_btt':
      if env_A == 'STM32F103RE_btt':
        get_answer(board_name, 'MCU Type?', 'STM32F103RC', 'STM32F103RE')
        if 1 == get_answer_val:
          env_A = 'STM32F103RC_btt'
      target_env = env_A
      if env_A == 'STM32F103RC_btt':
        get_answer(board_name, 'RCT6 Flash Size?', '512K', '256K')
        if 1 == get_answer_val:
          target_env += '_512K'
      get_answer(board_name, 'USB Support?', 'USB', 'No USB')
      if 1 == get_answer_val:
        target_env += '_USB'
    else:
      invalid_board()

  if build_type == 'traceback' and target_env != 'LPC1768_debug_and_upload' and target_env != 'DUE_debug' and Marlin_ver == 2:
    print("ERROR - this board isn't setup for traceback")
    print('board_name: ', board_name)
    print('target_env: ', target_env)
    raise SystemExit(0)

  return target_env

# end - get_env


# puts screen text into queue so that the parent thread can fetch the data from this thread
if python_ver == 2:
  import Queue as queue
else:
  import queue as queue
IO_queue = queue.Queue()


#PIO_queue = queue.Queue()    not used!
def write_to_screen_queue(text, format_tag='normal'):
  double_in = [text, format_tag]
  IO_queue.put(double_in, block=False)


#
#  send one line to the terminal screen with syntax highlighting
#
# input: unformatted text, flags from previous run
# return: formatted text ready to go to the terminal, flags from this run
#
# This routine remembers the status from call to call because previous
# lines can affect how the current line is highlighted
#

# 'static' variables - init here and then keep updating them from within print_line
warning = False
warning_FROM = False
error = False
standard = True
prev_line_COM = False
next_line_warning = False
warning_continue = False
line_counter = 0


def line_print(line_input):

  global warning
  global warning_FROM
  global error
  global standard
  global prev_line_COM
  global next_line_warning
  global warning_continue
  global line_counter

  # all '0' elements must precede all '1' elements or they'll be skipped
  platformio_highlights = [
    ['Environment', 0, 'highlight_blue'], ['[SKIP]', 1, 'warning'], ['[IGNORED]', 1, 'warning'], ['[ERROR]', 1, 'error'],
    ['[FAILED]', 1, 'error'], ['[SUCCESS]', 1, 'highlight_green']
  ]

  def write_to_screen_with_replace(text, highlights):  # search for highlights & split line accordingly
    did_something = False
    for highlight in highlights:
      found = text.find(highlight[0])
      if did_something == True:
        break
      if found >= 0:
        did_something = True
        if 0 == highlight[1]:
          found_1 = text.find(' ')
          found_tab = text.find('\t')
          if found_1 < 0 or found_1 > found_tab:
            found_1 = found_tab
          write_to_screen_queue(text[:found_1 + 1])
          for highlight_2 in highlights:
            if highlight[0] == highlight_2[0]:
              continue
            found = text.find(highlight_2[0])
            if found >= 0:
              found_space = text.find(' ', found_1 + 1)
              found_tab = text.find('\t', found_1 + 1)
              if found_space < 0 or found_space > found_tab:
                found_space = found_tab
              found_right = text.find(']', found + 1)
              write_to_screen_queue(text[found_1 + 1:found_space + 1], highlight[2])
              write_to_screen_queue(text[found_space + 1:found + 1])
              write_to_screen_queue(text[found + 1:found_right], highlight_2[2])
              write_to_screen_queue(text[found_right:] + '\n')
              break
          break
        if 1 == highlight[1]:
          found_right = text.find(']', found + 1)
          write_to_screen_queue(text[:found + 1])
          write_to_screen_queue(text[found + 1:found_right], highlight[2])
          write_to_screen_queue(text[found_right:] + '\n' + '\n')
        break
    if did_something == False:
      r_loc = text.find('\r') + 1
      if r_loc > 0 and r_loc < len(text):  # need to split this line
        text = text.split('\r')
        for line in text:
          if line != '':
            write_to_screen_queue(line + '\n')
      else:
        write_to_screen_queue(text + '\n')

  # end - write_to_screen_with_replace

# scan the line
  line_counter = line_counter + 1
  max_search = len(line_input)
  if max_search > 3:
    max_search = 3
  beginning = line_input[:max_search]

  # set flags
  if 0 < line_input.find(': warning: '):  # start of warning block
    warning = True
    warning_FROM = False
    error = False
    standard = False
    prev_line_COM = False
    prev_line_COM = False
    warning_continue = True
  if 0 < line_input.find('Thank you') or 0 < line_input.find('SUMMARY'):
    warning = False  #standard line found
    warning_FROM = False
    error = False
    standard = True
    prev_line_COM = False
    warning_continue = False
  elif beginning == 'War' or \
    beginning == '#er' or \
    beginning == 'In ' or \
    (beginning != 'Com' and prev_line_COM == True and not(beginning == 'Arc' or beginning == 'Lin'  or beginning == 'Ind') or \
    next_line_warning == True):
    warning = True  #warning found
    warning_FROM = False
    error = False
    standard = False
    prev_line_COM = False
  elif beginning == 'Com' or \
    beginning == 'Ver' or \
    beginning == ' [E' or \
    beginning == 'Rem' or \
    beginning == 'Bui' or \
    beginning == 'Ind' or \
    beginning == 'PLA':
    warning = False  #standard line found
    warning_FROM = False
    error = False
    standard = True
    prev_line_COM = False
    warning_continue = False
  elif beginning == '***':
    warning = False  # error found
    warning_FROM = False
    error = True
    standard = False
    prev_line_COM = False
  elif 0 < line_input.find(': error:') or \
    0 < line_input.find(': fatal error:'):       # start of warning /error block
    warning = False  # error found
    warning_FROM = False
    error = True
    standard = False
    prev_line_COM = False
    warning_continue = True
  elif beginning == 'fro' and warning == True or \
    beginning == '.pi' :                             # start of warning /error block
    warning_FROM = True
    prev_line_COM = False
    warning_continue = True
  elif warning_continue == True:
    warning = True
    warning_FROM = False  # keep the warning status going until find a standard line or an error
    error = False
    standard = False
    prev_line_COM = False
    warning_continue = True

  else:
    warning = False  # unknown so assume standard line
    warning_FROM = False
    error = False
    standard = True
    prev_line_COM = False
    warning_continue = False

  if beginning == 'Com':
    prev_line_COM = True

# print based on flags
  if standard == True:
    write_to_screen_with_replace(line_input, platformio_highlights)  #print white on black with substitutions
  if warning == True:
    write_to_screen_queue(line_input + '\n', 'warning')
  if error == True:
    write_to_screen_queue(line_input + '\n', 'error')

# end - line_print


##########################################################################
#                                                                        #
# run Platformio                                                         #
#                                                                        #
##########################################################################

#  build      platformio run -e  target_env
#  clean      platformio run --target clean -e  target_env
#  upload     platformio run --target upload -e  target_env
#  traceback  platformio run --target upload -e  target_env
#  program    platformio run --target program -e  target_env
#  test       platformio test upload -e  target_env
#  remote     platformio remote run --target upload -e  target_env
#  debug      platformio debug -e  target_env


def sys_PIO():

  ##########################################################################
  #                                                                        #
  # run Platformio inside the same shell as this Python script             #
  #                                                                        #
  ##########################################################################

  global build_type
  global target_env

  import os

  print('build_type: ', build_type)
  print('starting platformio')

  if build_type == 'build':
    # pio_result = os.system("echo -en '\033c'")
    pio_result = os.system('platformio run -e ' + target_env)
  elif build_type == 'clean':
    pio_result = os.system('platformio run --target clean -e ' + target_env)
  elif build_type == 'upload':
    pio_result = os.system('platformio run --target upload -e ' + target_env)
  elif build_type == 'traceback':
    pio_result = os.system('platformio run --target upload -e ' + target_env)
  elif build_type == 'program':
    pio_result = os.system('platformio run --target program -e ' + target_env)
  elif build_type == 'test':
    pio_result = os.system('platformio test upload -e ' + target_env)
  elif build_type == 'remote':
    pio_result = os.system('platformio remote run --target program -e ' + target_env)
  elif build_type == 'debug':
    pio_result = os.system('platformio debug -e ' + target_env)
  else:
    print('ERROR - unknown build type:  ', build_type)
    raise SystemExit(0)  # kill everything

  # stream output from subprocess and split it into lines
  #for line in iter(pio_subprocess.stdout.readline, ''):
  #      line_print(line.replace('\n', ''))

  # append info used to run PlatformIO
  #  write_to_screen_queue('\nBoard name: ' + board_name  + '\n')  # put build info at the bottom of the screen
  #  write_to_screen_queue('Build type: ' + build_type  + '\n')
  #  write_to_screen_queue('Environment used: ' + target_env  + '\n')
  #  write_to_screen_queue(str(datetime.now()) + '\n')

# end - sys_PIO


def run_PIO(dummy):

  global build_type
  global target_env
  global board_name
  print('build_type:  ', build_type)

  import subprocess
  import sys

  print('starting platformio')

  if build_type == 'build':
    # platformio run -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'run', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'clean':
    # platformio run --target clean -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'run', '--target', 'clean', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'upload':
    # platformio run --target upload -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'run', '--target', 'upload', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'traceback':
    # platformio run --target upload -e  target_env  - select the debug environment if there is one
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'run', '--target', 'upload', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'program':
    # platformio run --target program -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'run', '--target', 'program', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'test':
    #platformio test upload -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'test', 'upload', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  elif build_type == 'remote':
    # platformio remote run --target upload -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'remote', 'run', '--target', 'program', '-e', target_env],
      stdout=subprocess.PIPE,
      stderr=subprocess.STDOUT
    )

  elif build_type == 'debug':
    # platformio debug -e  target_env
    # combine stdout & stderr so all compile messages are included
    pio_subprocess = subprocess.Popen(
      ['platformio', 'debug', '-e', target_env], stdout=subprocess.PIPE, stderr=subprocess.STDOUT
    )

  else:
    print('ERROR - unknown build type:  ', build_type)
    raise SystemExit(0)  # kill everything

# stream output from subprocess and split it into lines
  if python_ver == 2:
    for line in iter(pio_subprocess.stdout.readline, ''):
      line_print(line.replace('\n', ''))
  else:
    for line in iter(pio_subprocess.stdout.readline, b''):
      line = line.decode('utf-8')
      line_print(line.replace('\n', ''))

# append info used to run PlatformIO
  write_to_screen_queue('\nBoard name: ' + board_name + '\n')  # put build info at the bottom of the screen
  write_to_screen_queue('Build type: ' + build_type + '\n')
  write_to_screen_queue('Environment used: ' + target_env + '\n')
  write_to_screen_queue(str(datetime.now()) + '\n')

# end - run_PIO

########################################################################

import time
import threading
if python_ver == 2:
  import Tkinter as tk
  import Queue as queue
  import ttk
  from Tkinter import Tk, Frame, Text, Scrollbar, Menu
  #from tkMessageBox import askokcancel      this is not used: removed
  import tkFileDialog as fileDialog
else:
  import tkinter as tk
  import queue as queue
  from tkinter import ttk, Tk, Frame, Text, Menu
import subprocess
import sys
que = queue.Queue()
#IO_queue = queue.Queue()


class output_window(Text):
  # based on Super Text
  global continue_updates
  continue_updates = True

  global search_position
  search_position = ''  # start with invalid search position

  global error_found
  error_found = False  # are there any errors?

  def __init__(self):

    self.root = tk.Tk()
    self.root.attributes("-topmost", True)
    self.frame = tk.Frame(self.root)
    self.frame.pack(fill='both', expand=True)

    # text widget
    #self.text = tk.Text(self.frame, borderwidth=3, relief="sunken")
    Text.__init__(self, self.frame, borderwidth=3, relief="sunken")
    self.config(tabs=(400, ))  # configure Text widget tab stops
    self.config(background='black', foreground='white', font=("consolas", 12), wrap='word', undo='True')
    #self.config(background = 'black', foreground = 'white', font= ("consolas", 12), wrap = 'none', undo = 'True')
    self.config(height=24, width=100)
    self.config(insertbackground='pale green')  # keyboard insertion point
    self.pack(side='left', fill='both', expand=True)

    self.tag_config('normal', foreground='white')
    self.tag_config('warning', foreground='yellow')
    self.tag_config('error', foreground='red')
    self.tag_config('highlight_green', foreground='green')
    self.tag_config('highlight_blue', foreground='cyan')
    self.tag_config('error_highlight_inactive', background='dim gray')
    self.tag_config('error_highlight_active', background='light grey')

    self.bind_class("Text", "<Control-a>", self.select_all)  # required in windows, works in others
    self.bind_all("<Control-Shift-E>", self.scroll_errors)
    self.bind_class("<Control-Shift-R>", self.rebuild)

    # scrollbar

    scrb = tk.Scrollbar(self.frame, orient='vertical', command=self.yview)
    self.config(yscrollcommand=scrb.set)
    scrb.pack(side='right', fill='y')

    #self.scrb_Y = tk.Scrollbar(self.frame, orient='vertical', command=self.yview)
    #self.scrb_Y.config(yscrollcommand=self.scrb_Y.set)
    #self.scrb_Y.pack(side='right', fill='y')

    #self.scrb_X = tk.Scrollbar(self.frame, orient='horizontal', command=self.xview)
    #self.scrb_X.config(xscrollcommand=self.scrb_X.set)
    #self.scrb_X.pack(side='bottom', fill='x')

    #scrb_X = tk.Scrollbar(self, orient=tk.HORIZONTAL, command=self.xview)  # tk.HORIZONTAL now have a horizsontal scroll bar BUT... shrinks it to a postage stamp and hides far right behind the vertical scroll bar
    #self.config(xscrollcommand=scrb_X.set)
    #scrb_X.pack(side='bottom', fill='x')

    #scrb= tk.Scrollbar(self, orient='vertical', command=self.yview)
    #self.config(yscrollcommand=scrb.set)
    #scrb.pack(side='right', fill='y')

    #self.config(height  = 240, width = 1000)            # didn't get the size baCK TO NORMAL
    #self.pack(side='left', fill='both', expand=True)    # didn't get the size baCK TO NORMAL

    # pop-up menu
    self.popup = tk.Menu(self, tearoff=0)

    self.popup.add_command(label='Copy', command=self._copy)
    self.popup.add_command(label='Paste', command=self._paste)
    self.popup.add_separator()
    self.popup.add_command(label='Cut', command=self._cut)
    self.popup.add_separator()
    self.popup.add_command(label='Select All', command=self._select_all)
    self.popup.add_command(label='Clear All', command=self._clear_all)
    self.popup.add_separator()
    self.popup.add_command(label='Save As', command=self._file_save_as)
    self.popup.add_separator()
    #self.popup.add_command(label='Repeat Build(CTL-shift-r)', command=self._rebuild)
    self.popup.add_command(label='Repeat Build', command=self._rebuild)
    self.popup.add_separator()
    self.popup.add_command(label='Scroll Errors (CTL-shift-e)', command=self._scroll_errors)
    self.popup.add_separator()
    self.popup.add_command(label='Open File at Cursor', command=self._open_selected_file)

    if current_OS == 'Darwin':  # MAC
      self.bind('<Button-2>', self._show_popup)  # macOS only
    else:
      self.bind('<Button-3>', self._show_popup)  # Windows & Linux

# threading & subprocess section

  def start_thread(self, ):
    global continue_updates
    # create then start a secondary thread to run an arbitrary function
    #  must have at least one argument
    self.secondary_thread = threading.Thread(target=lambda q, arg1: q.put(run_PIO(arg1)), args=(que, ''))
    self.secondary_thread.start()
    continue_updates = True
    # check the Queue in 50ms
    self.root.after(50, self.check_thread)
    self.root.after(50, self.update)

  def check_thread(self):  # wait for user to kill the window
    global continue_updates
    if continue_updates == True:
      self.root.after(10, self.check_thread)

  def update(self):
    global continue_updates
    if continue_updates == True:
      self.root.after(10, self.update)  #method is called every 50ms
    temp_text = ['0', '0']
    if IO_queue.empty():
      if not (self.secondary_thread.is_alive()):
        continue_updates = False  # queue is exhausted and thread is dead so no need for further updates
    else:
      try:
        temp_text = IO_queue.get(block=False)
      except Queue.Empty:
        continue_updates = False  # queue is exhausted so no need for further updates
      else:
        self.insert('end', temp_text[0], temp_text[1])
        self.see("end")  # make the last line visible (scroll text off the top)

# text editing section

  def _scroll_errors(self):
    global search_position
    global error_found
    if search_position == '':  # first time so highlight all errors
      countVar = tk.IntVar()
      search_position = '1.0'
      search_count = 0
      while search_position != '' and search_count < 100:
        search_position = self.search("error", search_position, stopindex="end", count=countVar, nocase=1)
        search_count = search_count + 1
        if search_position != '':
          error_found = True
          end_pos = '{}+{}c'.format(search_position, 5)
          self.tag_add("error_highlight_inactive", search_position, end_pos)
          search_position = '{}+{}c'.format(search_position, 1)  # point to the next character for new search
        else:
          break

    if error_found:
      if search_position == '':
        search_position = self.search("error", '1.0', stopindex="end", nocase=1)  # new search
      else:  # remove active highlight
        end_pos = '{}+{}c'.format(search_position, 5)
        start_pos = '{}+{}c'.format(search_position, -1)
        self.tag_remove("error_highlight_active", start_pos, end_pos)
      search_position = self.search(
        "error", search_position, stopindex="end", nocase=1
      )  # finds first occurrence AGAIN on the first time through
      if search_position == "":  # wrap around
        search_position = self.search("error", '1.0', stopindex="end", nocase=1)
      end_pos = '{}+{}c'.format(search_position, 5)
      self.tag_add("error_highlight_active", search_position, end_pos)  # add active highlight
      self.see(search_position)
      search_position = '{}+{}c'.format(search_position, 1)  # point to the next character for new search

  def scroll_errors(self, event):
    self._scroll_errors()

  def _rebuild(self):
    #global board_name
    #global Marlin_ver
    #global target_env
    #board_name, Marlin_ver = get_board_name()
    #target_env = get_env(board_name, Marlin_ver)
    self.start_thread()

  def rebuild(self, event):
    print("event happened")
    self._rebuild()

  def _open_selected_file(self):
    current_line = self.index('insert')
    line_start = current_line[:current_line.find('.')] + '.0'
    line_end = current_line[:current_line.find('.')] + '.200'
    self.mark_set("path_start", line_start)
    self.mark_set("path_end", line_end)
    path = self.get("path_start", "path_end")
    from_loc = path.find('from ')
    colon_loc = path.find(': ')
    if 0 <= from_loc and ((colon_loc == -1) or (from_loc < colon_loc)):
      path = path[from_loc + 5:]
    if 0 <= colon_loc:
      path = path[:colon_loc]
    if 0 <= path.find('\\') or 0 <= path.find('/'):  # make sure it really contains a path
      open_file(path)

  def _file_save_as(self):
    self.filename = fileDialog.asksaveasfilename(defaultextension='.txt')
    f = open(self.filename, 'w')
    f.write(self.get('1.0', 'end'))
    f.close()

  def copy(self, event):
    try:
      selection = self.get(*self.tag_ranges('sel'))
      self.clipboard_clear()
      self.clipboard_append(selection)
    except TypeError:
      pass

  def cut(self, event):
    try:
      selection = self.get(*self.tag_ranges('sel'))
      self.clipboard_clear()
      self.clipboard_append(selection)
      self.delete(*self.tag_ranges('sel'))
    except TypeError:
      pass

  def _show_popup(self, event):
    '''right-click popup menu'''

    if self.root.focus_get() != self:
      self.root.focus_set()

    try:
      self.popup.tk_popup(event.x_root, event.y_root, 0)
    finally:
      self.popup.grab_release()

  def _cut(self):
    try:
      selection = self.get(*self.tag_ranges('sel'))
      self.clipboard_clear()
      self.clipboard_append(selection)
      self.delete(*self.tag_ranges('sel'))
    except TypeError:
      pass

  def cut(self, event):
    self._cut()

  def _copy(self):

    try:
      selection = self.get(*self.tag_ranges('sel'))
      self.clipboard_clear()
      self.clipboard_append(selection)
    except TypeError:
      pass

  def copy(self, event):
    self._copy()

  def _paste(self):
    self.insert('insert', self.selection_get(selection='CLIPBOARD'))

  def _select_all(self):
    self.tag_add('sel', '1.0', 'end')

  def select_all(self, event):
    self.tag_add('sel', '1.0', 'end')

  def _clear_all(self):
    #'''erases all text'''
    #
    #isok = askokcancel('Clear All', 'Erase all text?', frame=self,
    #                   default='ok')
    #if isok:
    #    self.delete('1.0', 'end')
    self.delete('1.0', 'end')

# end - output_window


def main():

  ##########################################################################
  #                                                                        #
  # main program                                                           #
  #                                                                        #
  ##########################################################################

  global build_type
  global target_env
  global board_name

  board_name, Marlin_ver = get_board_name()

  target_env = get_env(board_name, Marlin_ver)

  # Re-use the VSCode terminal, if possible
  if os.environ.get('PLATFORMIO_CALLER', '') == 'vscode':
    sys_PIO()
  else:
    auto_build = output_window()
    auto_build.start_thread()  # executes the "run_PIO" function

    auto_build.root.mainloop()


if __name__ == '__main__':

  main()