'''
rectangle.py

Copyright (C) 2020 - 2024 Phillip A Carter
Copyright (C) 2020 - 2024 Gregory D Carl

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 2 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
'''

import os
import sys
import math
import gettext

for f in sys.path:
    if '/lib/python' in f:
        if '/usr' in f:
            localeDir = 'usr/share/locale'
        else:
            localeDir = os.path.join(f'{f.split("/lib")[0]}', 'share', 'locale')
        break
gettext.install("linuxcnc", localedir=localeDir)


# Conv is the upstream calling module
def preview(Conv, fTmp, fNgc, fNgcBkp,
            matNumber, matName,
            preAmble, postAmble,
            leadinLength, leadoutLength,
            isCenter, xOffset, yOffset,
            kerfWidth, isExternal,
            width, height, angle,
            styleR1, styleR2, styleR3, styleR4,
            radiusR1, radiusR2, radiusR3, radiusR4,
            textR1, textR2, textR3, textR4):
    error = ''
    msg1 = _('entry is invalid')
    valid, xOffset = Conv.conv_is_float(xOffset)
    if not valid and xOffset:
        msg0 = _('X ORIGIN')
        error += 'f{msg0} {msg1}\n\n'
    valid, yOffset = Conv.conv_is_float(yOffset)
    if not valid and yOffset:
        msg0 = _('Y ORIGIN')
        error += 'f{msg0} {msg1}\n\n'
    valid, leadinLength = Conv.conv_is_float(leadinLength)
    if not valid and leadinLength:
        msg0 = _('LEAD IN')
        error += 'f{msg0} {msg1}\n\n'
    valid, leadoutLength = Conv.conv_is_float(leadoutLength)
    if not valid and leadoutLength:
        msg0 = _('LEAD OUT')
        error += 'f{msg0} {msg1}\n\n'
    valid, width = Conv.conv_is_float(width)
    if not valid and width:
        msg0 = _('WIDTH')
        error += 'f{msg0} {msg1}\n\n'
    valid, height = Conv.conv_is_float(height)
    if not valid and height:
        msg0 = _('HEIGHT')
        error += 'f{msg0} {msg1}\n\n'
    valid, angle = Conv.conv_is_float(angle)
    if not valid and angle:
        msg0 = _('ANGLE')
        error += 'f{msg0} {msg1}\n\n'
    valid, radius1 = Conv.conv_is_float(radiusR1)
    if not valid and radiusR1:
        error += f'{textR1} {msg1}\n\n'
    valid, radius2 = Conv.conv_is_float(radiusR2)
    if not valid and radiusR2:
        error += f'{textR2} {msg1}\n\n'
    valid, radius3 = Conv.conv_is_float(radiusR3)
    if not valid and radiusR3:
        error += f'{textR3} {msg1}\n\n'
    valid, radius4 = Conv.conv_is_float(radiusR4)
    if not valid and radiusR4:
        error += f'{textR4} {msg1}\n\n'
    valid, kerfWidth = Conv.conv_is_float(kerfWidth)
    if not valid:
        msg = _('Kerf Width entry in material is invalid')
        error += f'{msg}\n\n'
    if error:
        return error
    if width == 0:
        msg = _('WIDTH cannot be zero')
        error += f'{msg}\n\n'
    if height == 0:
        msg = _('HEIGHT cannot be zero')
        error += f'{msg}\n\n'
    if width and height:
        msg0 = _('cannot be greater than')
        if isExternal:
            maxH = height
            maxW = width
        else:
            maxH = height + kerfWidth * -1
            maxW = width + kerfWidth * -1
        max = min(maxW / 2, maxH)
        if radius1 > max:
            error += f'{textR1} {msg0} {max}\n\n'
        if radius2 > max:
            error += f'{textR2} {msg0} {max}\n\n'
        if radius3 > maxH:
            error += f'{textR3} {msg0} {maxH}\n\n'
        if radius4 > maxH:
            error += f'{textR4} {msg0} {maxH}\n\n'
        if radius3 + radius4 > maxW:
            error += f'{textR3} + {textR4} {msg0} {maxW}\n\n'
        if radius1 + radius3 > maxH:
            error += f'{textR1} + {textR3} {msg0} {maxH}\n\n'
        if radius2 + radius4 > maxH:
            error += f'{textR2} + {textR4} {msg0} {maxH}\n\n'
    radii = [None, radius1, radius2, radius3, radius4]
    texts = [None, textR1, textR2, textR3, textR4]
    for r in range(1, 5):
        if radii[r] and radii[r] < kerfWidth / 2:
            msg0 = _('can not be less than kerf radius')
            error += f'{texts[r]} {msg0}\n\n'
    if error:
        return error
    angle = math.radians(angle)
    leadInOffset = math.sin(math.radians(45)) * leadinLength
    leadOutOffset = math.sin(math.radians(45)) * leadoutLength
    kOffset = kerfWidth / 2
    if isExternal:
        width = width + kerfWidth
        height = height + kerfWidth
    else:
        width = width - kerfWidth
        height = height - kerfWidth
    right = math.radians(0)
    up = math.radians(90)
    left = math.radians(180)
    down = math.radians(270)
    if isExternal:
        if radius1:
            if styleR1 == 'extRadius':
                radius1 += kOffset
            elif styleR1 == 'chamfer':
                radius1 += kOffset * math.tan(math.radians(22.5))
        if radius2:
            if styleR2 == 'extRadius':
                radius2 += kOffset
            elif styleR2 == 'chamfer':
                radius2 += kOffset * math.tan(math.radians(22.5))
        if radius3:
            if styleR3 == 'extRadius':
                radius3 += kOffset
            elif styleR3 == 'chamfer':
                radius3 += kOffset * math.tan(math.radians(22.5))
        if radius4:
            if styleR4 == 'extRadius':
                radius4 += kOffset
            elif styleR4 == 'chamfer':
                radius4 += kOffset * math.tan(math.radians(22.5))
    else:
        if radius1:
            if styleR1 == 'extRadius':
                radius1 -= kOffset
            elif styleR1 == 'chamfer':
                radius1 -= kOffset * math.tan(math.radians(22.5))
        if radius2:
            if styleR2 == 'extRadius':
                radius2 -= kOffset
            elif styleR2 == 'chamfer':
                radius2 -= kOffset * math.tan(math.radians(22.5))
        if radius3:
            if styleR3 == 'extRadius':
                radius3 -= kOffset
            elif styleR3 == 'chamfer':
                radius3 -= kOffset * math.tan(math.radians(22.5))
        if radius4:
            if styleR4 == 'extRadius':
                radius4 -= kOffset
            elif styleR4 == 'chamfer':
                radius4 -= kOffset * math.tan(math.radians(22.5))
    xLB = width - (radius3 + radius4)
    xLT = width - (radius1 + radius2)
    xC = width / 2
    yLR = height - (radius2 + radius4)
    yLL = height - (radius1 + radius3)
    yC = height / 2
    blLength = math.sqrt(xC ** 2 + (yC * 2) ** 2)
    blAngle = math.atan((yC * 2) / xC)
    if isCenter:
        if isExternal:
            xS = xOffset + ((yC - radius2) * math.cos(angle + up)) + (xC * math.cos(angle + right))
            yS = yOffset + ((yC - radius2) * math.sin(angle + up)) + (xC * math.sin(angle + right))
        else:
            xS = xOffset + yC * math.cos(angle + up)
            yS = yOffset + yC * math.sin(angle + up)
    else:
        if isExternal:
            xS = xOffset + (width * math.cos(angle + up)) + (width * math.cos(angle + right))
            yS = yOffset + ((height - radius2) * math.sin(angle + up)) + (width * math.sin(angle + right))
        else:
            xS = xOffset + (blLength * math.cos(angle + right + blAngle))
            yS = yOffset + (blLength * math.sin(angle + right + blAngle))
    outTmp = open(fTmp, 'w')
    outNgc = open(fNgc, 'w')
    inWiz = open(fNgcBkp, 'r')
    for line in inWiz:
        line = line.strip()
        if line and line[0] not in ';':
            if '(new conversational file)' in line:
                if('\\n') in preAmble:
                    outNgc.write('(preamble)\n')
                    for l in preAmble.split('\\n'):
                        outNgc.write(f'{l}\n')
                else:
                    outNgc.write(f'\n{preAmble} (preamble)\n')
                break
            elif '(postamble)' in line:
                break
            elif 'M2' in line.upper() or 'M02' in line.upper() or 'M30' in line.upper():
                continue
        outNgc.write(f"{line}\n")
    outTmp.write('\n(conversational rectangle)\n')
    outTmp.write(f';using material #{matNumber}: {matName}\n')
    outTmp.write(f'M190 P{matNumber}\n')
    outTmp.write('M66 P3 L3 Q1\n')
    outTmp.write('F#<_hal[plasmac.cut-feed-rate]>\n')
    if isExternal:
        if leadInOffset > 0:
            xlCentre = xS + (leadInOffset * math.cos(angle + right))
            ylCentre = yS + (leadInOffset * math.sin(angle + right))
            xlStart = xlCentre + (leadInOffset * math.cos(angle + up))
            ylStart = ylCentre + (leadInOffset * math.sin(angle + up))
            outTmp.write(f'G00 X{xlStart:.6f} Y{ylStart:.6f}\n')
            outTmp.write('M03 $0 S1\n')
            outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xlCentre - xlStart:.6f} J{ylCentre - ylStart:.6f}\n')
        else:
            outTmp.write(f'G00 X{xS:.6f} Y{yS:.6f}\n')
            outTmp.write('M03 $0 S1\n')
        x1 = xS + yLR * math.cos(angle + down)
        y1 = yS + yLR * math.sin(angle + down)
        outTmp.write(f'G01 X{x1:.6f} Y{y1:.6f}\n')
        if radius4:
            if styleR4 == 'intRadius':
                xrCentre = x1 + (radius4 * math.cos(angle + down))
                yrCentre = y1 + (radius4 * math.sin(angle + down))
                xrEnd = xrCentre + (radius4 * math.cos(angle + left))
                yrEnd = yrCentre + (radius4 * math.sin(angle + left))
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
            else:
                xrCentre = x1 + (radius4 * math.cos(angle + left))
                yrCentre = y1 + (radius4 * math.sin(angle + left))
                xrEnd = xrCentre + (radius4 * math.cos(angle + down))
                yrEnd = yrCentre + (radius4 * math.sin(angle + down))
            if styleR4 == 'extRadius':
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x2 = xrEnd + xLB * math.cos(angle + left)
            y2 = yrEnd + xLB * math.sin(angle + left)
        else:
            x2 = x1 + xLB * math.cos(angle + left)
            y2 = y1 + xLB * math.sin(angle + left)
        outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n')
        if radius3:
            if styleR3 == 'intRadius':
                xrCentre = x2 + (radius3 * math.cos(angle + left))
                yrCentre = y2 + (radius3 * math.sin(angle + left))
                xrEnd = xrCentre + (radius3 * math.cos(angle + up))
                yrEnd = yrCentre + (radius3 * math.sin(angle + up))
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
            else:
                xrCentre = x2 + (radius3 * math.cos(angle + up))
                yrCentre = y2 + (radius3 * math.sin(angle + up))
                xrEnd = xrCentre + (radius3 * math.cos(angle + left))
                yrEnd = yrCentre + (radius3 * math.sin(angle + left))
            if styleR3 == 'extRadius':
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x3 = xrEnd + yLL * math.cos(angle + up)
            y3 = yrEnd + yLL * math.sin(angle + up)
        else:
            x3 = x2 + yLL * math.cos(angle + up)
            y3 = y2 + yLL * math.sin(angle + up)
        outTmp.write(f'G01 X{x3:.6f} Y{y3:.6f}\n')
        if radius1:
            if styleR1 == 'intRadius':
                xrCentre = x3 + (radius1 * math.cos(angle + up))
                yrCentre = y3 + (radius1 * math.sin(angle + up))
                xrEnd = xrCentre + (radius1 * math.cos(angle + right))
                yrEnd = yrCentre + (radius1 * math.sin(angle + right))
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x3:.6f} J{yrCentre - y3:.6f}\n')
            else:
                xrCentre = x3 + (radius1 * math.cos(angle + right))
                yrCentre = y3 + (radius1 * math.sin(angle + right))
                xrEnd = xrCentre + (radius1 * math.cos(angle + up))
                yrEnd = yrCentre + (radius1 * math.sin(angle + up))
            if styleR1 == 'extRadius':
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x3:.6f} J{yrCentre - y3:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x4 = xrEnd + xLT * math.cos(angle + right)
            y4 = yrEnd + xLT * math.sin(angle + right)
        else:
            x4 = x3 + xLT * math.cos(angle + right)
            y4 = y3 + xLT * math.sin(angle + right)
        outTmp.write(f'G01 X{x4:.6f} Y{y4:.6f}\n')
        if radius2:
            if styleR2 == 'intRadius':
                xrCentre = x4 + (radius2 * math.cos(angle + right))
                yrCentre = y4 + (radius2 * math.sin(angle + right))
                xrEnd = xrCentre + (radius2 * math.cos(angle + down))
                yrEnd = yrCentre + (radius2 * math.sin(angle + down))
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x4:.6f} J{yrCentre - y4:.6f}\n')
            else:
                xrCentre = x4 + (radius2 * math.cos(angle + down))
                yrCentre = y4 + (radius2 * math.sin(angle + down))
                xrEnd = xrCentre + (radius2 * math.cos(angle + right))
                yrEnd = yrCentre + (radius2 * math.sin(angle + right))
            if styleR2 == 'extRadius':
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x4:.6f} J{yrCentre - y4:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
    else:
        if leadInOffset > 0:
            xlCentre = xS + (leadInOffset * math.cos(angle + down))
            ylCentre = yS + (leadInOffset * math.sin(angle + down))
            xlStart = xlCentre + (leadInOffset * math.cos(angle + right))
            ylStart = ylCentre + (leadInOffset * math.sin(angle + right))
            outTmp.write(f'G00 X{xlStart:.6f} Y{ylStart:.6f}\n')
            outTmp.write('M03 $0 S1\n')
            outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xlCentre - xlStart:.6f} J{ylCentre - ylStart:.6f}\n')
        else:
            outTmp.write(f'G00 X{xS:.6f} Y{yS:.6f}\n')
            outTmp.write('M03 $0 S1\n')
        x1 = xS + ((xLT - (radius1 - radius2)) / 2) * math.cos(angle + left)
        y1 = yS + ((xLT - (radius1 - radius2)) / 2) * math.sin(angle + left)
        outTmp.write(f'G01 X{x1:.6f} Y{y1:.6f}\n')
        if radius1:
            if styleR1 == 'intRadius':
                xrCentre = x1 + (radius1 * math.cos(angle + left))
                yrCentre = y1 + (radius1 * math.sin(angle + left))
                xrEnd = xrCentre + (radius1 * math.cos(angle + down))
                yrEnd = yrCentre + (radius1 * math.sin(angle + down))
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
            else:
                xrCentre = x1 + (radius1 * math.cos(angle + down))
                yrCentre = y1 + (radius1 * math.sin(angle + down))
                xrEnd = xrCentre + (radius1 * math.cos(angle + left))
                yrEnd = yrCentre + (radius1 * math.sin(angle + left))
            if styleR1 == 'extRadius':
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x2 = xrEnd + yLL * math.cos(angle + down)
            y2 = yrEnd + yLL * math.sin(angle + down)
        else:
            x2 = x1 + yLL * math.cos(angle + down)
            y2 = y1 + yLL * math.sin(angle + down)
        outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n')
        if radius3:
            if styleR3 == 'intRadius':
                xrCentre = x2 + (radius3 * math.cos(angle + down))
                yrCentre = y2 + (radius3 * math.sin(angle + down))
                xrEnd = xrCentre + (radius3 * math.cos(angle + right))
                yrEnd = yrCentre + (radius3 * math.sin(angle + right))
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
            else:
                xrCentre = x2 + (radius3 * math.cos(angle + right))
                yrCentre = y2 + (radius3 * math.sin(angle + right))
                xrEnd = xrCentre + (radius3 * math.cos(angle + down))
                yrEnd = yrCentre + (radius3 * math.sin(angle + down))
            if styleR3 == 'extRadius':
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x3 = xrEnd + xLB * math.cos(angle + right)
            y3 = yrEnd + xLB * math.sin(angle + right)
        else:
            x3 = x2 + xLB * math.cos(angle + right)
            y3 = y2 + xLB * math.sin(angle + right)
        outTmp.write(f'G01 X{x3:.6f} Y{y3:.6f}\n')
        if radius4:
            if styleR4 == 'intRadius':
                xrCentre = x3 + (radius4 * math.cos(angle + right))
                yrCentre = y3 + (radius4 * math.sin(angle + right))
                xrEnd = xrCentre + (radius4 * math.cos(angle + up))
                yrEnd = yrCentre + (radius4 * math.sin(angle + up))
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x3:.6f} J{yrCentre - y3:.6f}\n')
            else:
                xrCentre = x3 + (radius4 * math.cos(angle + up))
                yrCentre = y3 + (radius4 * math.sin(angle + up))
                xrEnd = xrCentre + (radius4 * math.cos(angle + right))
                yrEnd = yrCentre + (radius4 * math.sin(angle + right))
            if styleR4 == 'extRadius':
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x3:.6f} J{yrCentre - y3:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
            x4 = xrEnd + yLR * math.cos(angle + up)
            y4 = yrEnd + yLR * math.sin(angle + up)
        else:
            x4 = x3 + yLR * math.cos(angle + up)
            y4 = y3 + yLR * math.sin(angle + up)
        outTmp.write(f'G01 X{x4:.6f} Y{y4:.6f}\n')
        if radius2:
            if styleR2 == 'intRadius':
                xrCentre = x4 + (radius2 * math.cos(angle + up))
                yrCentre = y4 + (radius2 * math.sin(angle + up))
                xrEnd = xrCentre + (radius2 * math.cos(angle + left))
                yrEnd = yrCentre + (radius2 * math.sin(angle + left))
                outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x4:.6f} J{yrCentre - y4:.6f}\n')
            else:
                xrCentre = x4 + (radius2 * math.cos(angle + left))
                yrCentre = y4 + (radius2 * math.sin(angle + left))
                xrEnd = xrCentre + (radius2 * math.cos(angle + up))
                yrEnd = yrCentre + (radius2 * math.sin(angle + up))
            if styleR2 == 'extRadius':
                outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x4:.6f} J{yrCentre - y4:.6f}\n')
            else:
                outTmp.write(f'G01 X{xrEnd:.6f} Y{yrEnd:.6f}\n')
    outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n')
    if leadOutOffset > 0:  # and not (isExternal and radius2):
        if isExternal and not radius2:
            dir = ['G02', down, right]
        elif isExternal and radius2:
            dir = ['G03', right, down]
        else:
            dir = ['G03', down, left]
        xlCentre = xS + (leadOutOffset * math.cos(angle + dir[1]))
        ylCentre = yS + (leadOutOffset * math.sin(angle + dir[1]))
        xlEnd = xlCentre + (leadOutOffset * math.cos(angle + dir[2]))
        ylEnd = ylCentre + (leadOutOffset * math.sin(angle + dir[2]))
        outTmp.write(f'{dir[0]} X{xlEnd:.6f} Y{ylEnd:.6f} I{xlCentre - xS:.6f} J{ylCentre - yS:.6f}\n')
    outTmp.write('G40\n')
    outTmp.write('M05 $0\n')
    outTmp.close()
    outTmp = open(fTmp, 'r')
    for line in outTmp:
        outNgc.write(line)
    outTmp.close()
    if('\\n') in postAmble:
        outNgc.write('\n(postamble)\n')
        for l in postAmble.split('\\n'):
            outNgc.write(f'{l}\n')
    else:
        outNgc.write(f'\n{postAmble} (postamble)\n')
    outNgc.write('M02\n')
    outNgc.close()
    return False
