# ***************************************************************************
# *   Copyright (c) 2014 sliptonic <shopinthewoods@gmail.com>               *
# *   Copyright (c) 2021 shadowbane1000 <tyler@colberts.us>                 *
# *                                                                         *
# *   This file is part of the FreeCAD CAx development system.              *
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# ***************************************************************************/

import FreeCAD
from FreeCAD import Units
import Path
import argparse
import datetime
import shlex
import os.path
import Path.Post.Utils as PostUtils
import PathScripts.PathUtils as PathUtils
from builtins import open as pyopen

TOOLTIP = """
This is a postprocessor file for the Path workbench. It is used to
take a pseudo-G-code fragment outputted by a Path object, and output
real G-code suitable should be suitable for most Fanuc controllers.
It has only been tested on a 21i-MB controller on a 3 axis mill.
This postprocessor, once placed in the appropriate PathScripts folder,
can be used directly from inside FreeCAD, via the GUI importer or via
python scripts with:

import fanuc_post
fanuc_post.export(object,"/path/to/file.ncc","")
"""

now = datetime.datetime.now()

parser = argparse.ArgumentParser(prog="fanuc", add_help=False)
parser.add_argument("--no-header", action="store_true", help="suppress header output")
parser.add_argument("--no-comments", action="store_true", help="suppress comment output")
parser.add_argument("--line-numbers", action="store_true", help="prefix with line numbers")
parser.add_argument(
    "--no-show-editor",
    action="store_true",
    help="don't pop up editor before writing output",
)
parser.add_argument("--precision", default="3", help="number of digits of precision, default=3")
parser.add_argument(
    "--preamble",
    help='set commands to be issued before the first command, default="G17\nG90"',
)
parser.add_argument(
    "--postamble",
    help='set commands to be issued after the last command, default="M05\nG17 G90\nM2"',
)
parser.add_argument(
    "--inches", action="store_true", help="Convert output for US imperial mode (G20)"
)
parser.add_argument(
    "--no-modal",
    action="store_true",
    help="Don't output the Same G-command Name USE NonModal Mode",
)
parser.add_argument(
    "--no-axis-modal", action="store_true", help="Don't output the Same Axis Value Mode"
)
parser.add_argument(
    "--no-tlo",
    action="store_true",
    help="suppress tool length offset (G43) following tool changes",
)

TOOLTIP_ARGS = parser.format_help()

# These globals set common customization preferences
OUTPUT_COMMENTS = True
OUTPUT_HEADER = True
OUTPUT_LINE_NUMBERS = False
SHOW_EDITOR = True
MODAL = True  # if true commands are suppressed if the same as previous line.
USE_TLO = True  # if true G43 will be output following tool changes
OUTPUT_DOUBLES = (
    False  # if false duplicate axis values are suppressed if the same as previous line.
)
COMMAND_SPACE = " "
LINENR = 100  # line number starting value

# These globals will be reflected in the Machine configuration of the project
UNITS = "G21"  # G21 for metric, G20 for us standard
UNIT_SPEED_FORMAT = "mm/min"
UNIT_FORMAT = "mm"

MACHINE_NAME = "fanuc_BTZ"
CORNER_MIN = {"x": 0, "y": 0, "z": 0}
CORNER_MAX = {"x": 500, "y": 300, "z": 300}
PRECISION = 3

# this global is used to pass spindle speed from the tool command into the machining command for
# rigid tapping.
tapSpeed = 0

# Preamble text will appear at the beginning of the GCODE output file.
PREAMBLE = """G17 G54 G40 G49 G80 G90
"""

# Postamble text will appear following the last operation.
POSTAMBLE = """M05
G17 G54 G90 G80 G40
G53 G00 Z0
G53 G00 X0 Y0
M02
"""

# Pre operation text will be inserted before every operation
PRE_OPERATION = """"""

# Post operation text will be inserted after every operation
POST_OPERATION = """"""

# Tool Change commands will be inserted before a tool change
TOOL_CHANGE = """"""


def processArguments(argstring):
    global OUTPUT_HEADER
    global OUTPUT_COMMENTS
    global OUTPUT_LINE_NUMBERS
    global SHOW_EDITOR
    global PRECISION
    global PREAMBLE
    global POSTAMBLE
    global UNITS
    global UNIT_SPEED_FORMAT
    global UNIT_FORMAT
    global MODAL
    global USE_TLO
    global OUTPUT_DOUBLES

    try:
        args = parser.parse_args(shlex.split(argstring))
        if args.no_header:
            OUTPUT_HEADER = False
        if args.no_comments:
            OUTPUT_COMMENTS = False
        if args.line_numbers:
            OUTPUT_LINE_NUMBERS = True
        if args.no_show_editor:
            SHOW_EDITOR = False
        print("Show editor = %d" % SHOW_EDITOR)
        PRECISION = args.precision
        if args.preamble is not None:
            PREAMBLE = args.preamble
        if args.postamble is not None:
            POSTAMBLE = args.postamble
        if args.inches:
            UNITS = "G20"
            UNIT_SPEED_FORMAT = "in/min"
            UNIT_FORMAT = "in"
            PRECISION = 4
        if args.no_modal:
            MODAL = False
        if args.no_tlo:
            USE_TLO = False
        if args.no_axis_modal:
            OUTPUT_DOUBLES = True

    except Exception:
        return False

    return True


def export(objectslist, filename, argstring):
    if not processArguments(argstring):
        return None
    global UNITS
    global UNIT_FORMAT
    global UNIT_SPEED_FORMAT
    global HORIZRAPID
    global VERTRAPID

    for obj in objectslist:
        if not hasattr(obj, "Path"):
            print(
                "the object " + obj.Name + " is not a path. Please select only path and Compounds."
            )
            return None

    print("postprocessing...")
    gcode = ""

    # write header
    if OUTPUT_HEADER:
        gcode += "%\n"
        gcode += ";\n"
        gcode += (
            "("
            + os.path.split(filename)[-1]
            + "FREECAD-FILENAME-GOES-HERE"
            + ", "
            + "JOB-NAME-GOES-HERE"
            + ")\n"
        )
        gcode += linenumber() + "(" + filename.upper() + ",EXPORTED BY FREECAD!)\n"
        gcode += linenumber() + "(POST PROCESSOR: " + __name__.upper() + ")\n"
        gcode += linenumber() + "(OUTPUT TIME:" + str(now).upper() + ")\n"

    # Write the preamble
    if OUTPUT_COMMENTS:
        gcode += linenumber() + "(BEGIN PREAMBLE)\n"
    for line in PREAMBLE.splitlines(False):
        gcode += linenumber() + line + "\n"
    gcode += linenumber() + UNITS + "\n"

    for obj in objectslist:

        # Skip inactive operations
        if hasattr(obj, "Active"):
            if not obj.Active:
                continue
        if hasattr(obj, "Base") and hasattr(obj.Base, "Active"):
            if not obj.Base.Active:
                continue

        # do the pre_op
        if OUTPUT_COMMENTS:
            gcode += linenumber() + "(BEGIN OPERATION: %s)\n" % obj.Label.upper()
            gcode += linenumber() + "(MACHINE UNITS: %s)\n" % (UNIT_SPEED_FORMAT.upper())
        for line in PRE_OPERATION.splitlines(True):
            gcode += linenumber() + line

        # get coolant mode
        coolantMode = "None"
        if hasattr(obj, "CoolantMode") or hasattr(obj, "Base") and hasattr(obj.Base, "CoolantMode"):
            if hasattr(obj, "CoolantMode"):
                coolantMode = obj.CoolantMode
            else:
                coolantMode = obj.Base.CoolantMode

        # turn coolant on if required
        if OUTPUT_COMMENTS:
            if not coolantMode == "None":
                gcode += linenumber() + "(COOLANT ON:" + coolantMode.upper() + ")\n"
        if coolantMode == "Flood":
            gcode += linenumber() + "M8" + "\n"
        if coolantMode == "Mist":
            gcode += linenumber() + "M7" + "\n"

        # process the operation gcode
        gcode += parse(obj)

        # do the post_op
        if OUTPUT_COMMENTS:
            gcode += linenumber() + "(FINISH OPERATION: %s)\n" % obj.Label.upper()
        for line in POST_OPERATION.splitlines(True):
            gcode += linenumber() + line

        # turn coolant off if required
        if not coolantMode == "None":
            if OUTPUT_COMMENTS:
                gcode += linenumber() + "(COOLANT OFF:" + coolantMode.upper() + ")\n"
            gcode += linenumber() + "M9" + "\n"

    # do the post_amble
    if OUTPUT_COMMENTS:
        gcode += "(BEGIN POSTAMBLE)\n"
    for line in POSTAMBLE.splitlines(True):
        gcode += linenumber() + line
    gcode += "%\n"

    if FreeCAD.GuiUp and SHOW_EDITOR:
        dia = PostUtils.GCodeEditorDialog()
        dia.editor.setText(gcode)
        result = dia.exec_()
        if result:
            final = dia.editor.toPlainText()
        else:
            final = gcode
    else:
        final = gcode

    print("done postprocessing.")

    if not filename == "-":
        gfile = pyopen(filename, "w")
        gfile.write(final)
        gfile.close()

    return final


def linenumber():
    global LINENR
    if OUTPUT_LINE_NUMBERS is True:
        LINENR += 10
        return "N" + str(LINENR) + " "
    return ""


def parse(pathobj):
    global PRECISION
    global MODAL
    global OUTPUT_DOUBLES
    global UNIT_FORMAT
    global UNIT_SPEED_FORMAT
    global tapSpeed

    out = ""
    lastcommand = None
    precision_string = "." + str(PRECISION) + "f"
    currLocation = {}  # keep track for no doubles
    print("Startup!")

    # the order of parameters
    # arcs need work.  original code from mach3_4 doesn't want K properties on XY plane.  Not sure
    # what fanuc does here.
    params = [
        "X",
        "Y",
        "Z",
        "A",
        "B",
        "C",
        "I",
        "J",
        "F",
        "S",
        "T",
        "Q",
        "R",
        "L",
        "H",
        "D",
        "P",
    ]
    firstmove = Path.Command("G0", {"X": -1, "Y": -1, "Z": -1, "F": 0.0})
    currLocation.update(firstmove.Parameters)  # set First location Parameters

    if hasattr(pathobj, "Group"):  # We have a compound or project.
        # if OUTPUT_COMMENTS:
        #     out += linenumber() + "(compound: " + pathobj.Label + ")\n"
        for p in pathobj.Group:
            out += parse(p)
        return out
    else:  # parsing simple path

        # groups might contain non-path things like stock.
        if not hasattr(pathobj, "Path"):
            return out

        # if OUTPUT_COMMENTS:
        #     out += linenumber() + "(" + pathobj.Label + ")\n"

        adaptiveOp = False
        opHorizRapid = 0
        opVertRapid = 0

        if "Adaptive" in pathobj.Name:
            adaptiveOp = True
            if hasattr(pathobj, "ToolController"):
                if (
                    hasattr(pathobj.ToolController, "HorizRapid")
                    and pathobj.ToolController.HorizRapid > 0
                ):
                    opHorizRapid = Units.Quantity(
                        pathobj.ToolController.HorizRapid, FreeCAD.Units.Velocity
                    )
                else:
                    FreeCAD.Console.PrintWarning(
                        "Tool Controller Horizontal Rapid Values are unset" + "\n"
                    )

                if (
                    hasattr(pathobj.ToolController, "VertRapid")
                    and pathobj.ToolController.VertRapid > 0
                ):
                    opVertRapid = Units.Quantity(
                        pathobj.ToolController.VertRapid, FreeCAD.Units.Velocity
                    )
                else:
                    FreeCAD.Console.PrintWarning(
                        "Tool Controller Vertical Rapid Values are unset" + "\n"
                    )

        commands = PathUtils.getPathWithPlacement(pathobj).Commands
        for index, c in enumerate(commands):

            outstring = []
            command = c.Name
            if index + 1 == len(commands):
                nextcommand = ""
            else:
                nextcommand = commands[index + 1].Name

            if adaptiveOp and c.Name in ["G0", "G00"]:
                if opHorizRapid and opVertRapid:
                    command = "G1"
                else:
                    outstring.append("(TOOL CONTROLLER RAPID VALUES ARE UNSET)" + "\n")

            # suppress moves in fixture selection
            if pathobj.Label == "Fixture":
                if command == "G0":
                    continue

            # if it's a tap, we rigid tap, so don't start the spindle yet...
#            if command == "M03" or command == "M3":
#                if pathobj.Tool.ToolType == "Tap":
#                    tapSpeed = int(pathobj.SpindleSpeed)
#                    continue

            # convert drill cycles to tap cycles if tool is a tap
            if command == "G81" or command == "G83":
                if (
                    hasattr(pathobj, "ToolController")
#                    and pathobj.ToolController.Tool.ToolType == "Tap"
                ):
                    command = "G84"
                    out += linenumber() + "G95\n"
                    paramstring = ""
                    for param in ["X", "Y"]:
                        if param in c.Parameters:
                            if (
                                (not OUTPUT_DOUBLES)
                                and (param in currLocation)
                                and (currLocation[param] == c.Parameters[param])
                            ):
                                continue
                            else:
                                pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length)
                                paramstring += (
                                    " "
                                    + param
                                    + format(
                                        float(pos.getValueAs(UNIT_FORMAT)),
                                        precision_string,
                                    )
                                )
                    if paramstring != "":
                        out += linenumber() + "G00" + paramstring + "\n"

                    if "S" in c.Parameters:
                        tapSpeed = int(c.Parameters["S"])
                    out += "M29 S" + str(tapSpeed) + "\n"

                    for param in ["Z", "R"]:
                        if param in c.Parameters:
                            if (
                                (not OUTPUT_DOUBLES)
                                and (param in currLocation)
                                and (currLocation[param] == c.Parameters[param])
                            ):
                                continue
                            else:
                                pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length)
                                paramstring += (
                                    " "
                                    + param
                                    + format(
                                        float(pos.getValueAs(UNIT_FORMAT)),
                                        precision_string,
                                    )
                                )
                    # in this mode, F is the distance per revolution of the thread (pitch)
                    # P is the dwell time in seconds at the bottom of the thread
                    # Q is the peck depth of the threading operation
                    for param in ["F", "P", "Q"]:
                        if param in c.Parameters:
                            value = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length)
                            paramstring += (
                                " "
                                + param
                                + format(
                                    float(value.getValueAs(UNIT_FORMAT)),
                                    precision_string,
                                )
                            )

                    out += linenumber() + "G84" + paramstring + "\n"
                    out += linenumber() + "G80\n"
                    out += linenumber() + "G94\n"
                    continue

            outstring.append(command)

            # if modal: suppress the command if it is the same as the last one
            if MODAL is True:
                if command == lastcommand:
                    outstring.pop(0)

            # suppress a G80 between two identical command
            if command == "G80" and lastcommand == nextcommand:
                continue

            if c.Name[0] == "(" and not OUTPUT_COMMENTS:  # command is a comment
                continue

            # Now add the remaining parameters in order
            for param in params:
                if param in c.Parameters:
                    if param == "F" and (
                        currLocation[param] != c.Parameters[param] or OUTPUT_DOUBLES
                    ):
                        if c.Name not in [
                            "G0",
                            "G00",
                        ]:  # fanuc doesn't use rapid speeds
                            speed = Units.Quantity(c.Parameters["F"], FreeCAD.Units.Velocity)
                            if speed.getValueAs(UNIT_SPEED_FORMAT) > 0.0:
                                outstring.append(
                                    param
                                    + format(
                                        float(speed.getValueAs(UNIT_SPEED_FORMAT)),
                                        precision_string,
                                    )
                                )
                            else:
                                continue
                    elif param == "T":
                        outstring.append(param + str(int(c.Parameters["T"])))
                    elif param == "H":
                        outstring.append(param + str(int(c.Parameters["H"])))
                    elif param == "D":
                        outstring.append(param + str(int(c.Parameters["D"])))
                    elif param == "S":
                        outstring.append(param + str(int(c.Parameters["S"])))
                    else:
                        if (
                            (not OUTPUT_DOUBLES)
                            and (param in currLocation)
                            and (currLocation[param] == c.Parameters[param])
                        ):
                            continue
                        else:
                            pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length)
                            outstring.append(
                                param + format(float(pos.getValueAs(UNIT_FORMAT)), precision_string)
                            )

            if adaptiveOp and c.Name in ["G0", "G00"]:
                if opHorizRapid and opVertRapid:
                    if "Z" not in c.Parameters:
                        outstring.append(
                            "F"
                            + format(
                                float(opHorizRapid.getValueAs(UNIT_SPEED_FORMAT)),
                                precision_string,
                            )
                        )
                    else:
                        outstring.append(
                            "F"
                            + format(
                                float(opVertRapid.getValueAs(UNIT_SPEED_FORMAT)),
                                precision_string,
                            )
                        )

            # store the latest command
            lastcommand = command
            currLocation.update(c.Parameters)

            # Check for Tool Change:
            if command == "M6":
                # stop the spindle
                out += linenumber() + "M5\n"
                for line in TOOL_CHANGE.splitlines(True):
                    out += linenumber() + line

                # add height offset
                if USE_TLO:
                    tool_height = "\nG43 H" + str(int(c.Parameters["T"]))
                    outstring.append(tool_height)

            if command == "message":
                if OUTPUT_COMMENTS is False:
                    out = []
                else:
                    outstring.pop(0)  # remove the command

            # prepend a line number and append a newline
            if len(outstring) >= 1:
                if OUTPUT_LINE_NUMBERS:
                    outstring.insert(0, (linenumber()))

                # append the line to the final output
                for w in outstring:
                    out += w.upper() + COMMAND_SPACE
                out = out.strip() + "\n"

        return out


# print(__name__ + " gcode postprocessor loaded.")