# SPDX-License-Identifier: LGPL-2.1-or-later

# ***************************************************************************
# *                                                                         *
# *   Copyright (c) 2011 Yorik van Havre <yorik@uncreated.net>              *
# *                                                                         *
# *   This file is part of FreeCAD.                                         *
# *                                                                         *
# *   FreeCAD is free software: you can redistribute it and/or modify it    *
# *   under the terms of the GNU Lesser General Public License as           *
# *   published by the Free Software Foundation, either version 2.1 of the  *
# *   License, or (at your option) any later version.                       *
# *                                                                         *
# *   FreeCAD 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      *
# *   Lesser General Public License for more details.                       *
# *                                                                         *
# *   You should have received a copy of the GNU Lesser General Public      *
# *   License along with FreeCAD. If not, see                               *
# *   <https://www.gnu.org/licenses/>.                                      *
# *                                                                         *
# ***************************************************************************

__title__ = "FreeCAD Axis System"
__author__ = "Yorik van Havre"
__url__ = "https://www.freecad.org"

## @package ArchGrid
#  \ingroup ARCH
#  \brief Grid system for the Arch workbench
#
#  This module provides tools to build grid systems

import math

import FreeCAD
import Part

if FreeCAD.GuiUp:
    from PySide import QtCore, QtGui
    from PySide.QtCore import QT_TRANSLATE_NOOP
    import FreeCADGui
    from draftutils.translate import translate
else:
    # \cond
    def translate(ctxt, txt):
        return txt

    def QT_TRANSLATE_NOOP(ctxt, txt):
        return txt

    # \endcond


class ArchGrid:
    "The Grid object"

    def __init__(self, obj):

        obj.Proxy = self
        self.Type = "Grid"
        self.setProperties(obj)

    def setProperties(self, obj):

        pl = obj.PropertiesList
        if not "Rows" in pl:
            obj.addProperty(
                "App::PropertyInteger",
                "Rows",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The number of rows"),
                locked=True,
            )
        if not "Columns" in pl:
            obj.addProperty(
                "App::PropertyInteger",
                "Columns",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The number of columns"),
                locked=True,
            )
        if not "RowSize" in pl:
            obj.addProperty(
                "App::PropertyFloatList",
                "RowSize",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The sizes of rows"),
                locked=True,
            )
        if not "ColumnSize" in pl:
            obj.addProperty(
                "App::PropertyFloatList",
                "ColumnSize",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The sizes of columns"),
                locked=True,
            )
        if not "Spans" in pl:
            obj.addProperty(
                "App::PropertyStringList",
                "Spans",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The span ranges of cells that are merged together"),
                locked=True,
            )
        if not "PointsOutput" in pl:
            obj.addProperty(
                "App::PropertyEnumeration",
                "PointsOutput",
                "Grid",
                QT_TRANSLATE_NOOP(
                    "Arch_Grid", "The type of 3D points produced by this grid object"
                ),
                locked=True,
            )
            obj.PointsOutput = ["Vertices", "Edges", "Vertical Edges", "Horizontal Edges", "Faces"]
        if not "Width" in pl:
            obj.addProperty(
                "App::PropertyLength",
                "Width",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The total width of this grid"),
                locked=True,
            )
        if not "Height" in pl:
            obj.addProperty(
                "App::PropertyLength",
                "Height",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The total height of this grid"),
                locked=True,
            )
        if not "AutoWidth" in pl:
            obj.addProperty(
                "App::PropertyLength",
                "AutoWidth",
                "Grid",
                QT_TRANSLATE_NOOP(
                    "Arch_Grid", "Creates automatic column divisions (set to 0 to disable)"
                ),
                locked=True,
            )
        if not "AutoHeight" in pl:
            obj.addProperty(
                "App::PropertyLength",
                "AutoHeight",
                "Grid",
                QT_TRANSLATE_NOOP(
                    "Arch_Grid", "Creates automatic row divisions (set to 0 to disable)"
                ),
                locked=True,
            )
        if not "Reorient" in pl:
            obj.addProperty(
                "App::PropertyBool",
                "Reorient",
                "Grid",
                QT_TRANSLATE_NOOP(
                    "Arch_Grid",
                    "When in edge midpoint mode, if this grid must reorient its children along edge normals or not",
                ),
                locked=True,
            )
        if not "HiddenFaces" in pl:
            obj.addProperty(
                "App::PropertyIntegerList",
                "HiddenFaces",
                "Grid",
                QT_TRANSLATE_NOOP("Arch_Grid", "The indices of faces to hide"),
                locked=True,
            )

    def onDocumentRestored(self, obj):

        self.setProperties(obj)

    def getSizes(self, obj):
        "returns rowsizes,columnsizes,spangroups"

        if not obj.Height.Value:
            return [], [], []
        if not obj.Width.Value:
            return [], [], []
        if (not obj.Rows) and (not obj.AutoHeight.Value):
            return [], [], []
        if (not obj.Columns) and (not obj.AutoWidth.Value):
            return [], [], []
        # rescale rows
        rowsizes = []
        if obj.AutoHeight.Value:
            if obj.AutoHeight.Value > obj.Height.Value:
                FreeCAD.Console.PrintError(translate("Arch", "Auto height is larger than height"))
                return [], [], []
            rows = int(math.floor(obj.Height.Value / obj.AutoHeight.Value))
            for i in range(rows):
                rowsizes.append(obj.AutoHeight.Value)
            rowsizes.append(obj.Height.Value - rows * obj.AutoHeight.Value)
        else:
            reserved_rowsize = sum(v for v in obj.RowSize)
            if reserved_rowsize > obj.Height.Value:
                FreeCAD.Console.PrintError(
                    translate("Arch", "Total row size is larger than height")
                )
                return [], [], []
            for i in range(obj.Rows):
                v = 0
                if i < len(obj.RowSize):
                    v = obj.RowSize[i]
                rowsizes.append(v)
            e = len([v for v in rowsizes if v == 0])
            default = obj.Height.Value - reserved_rowsize
            if e:
                default = default / e
            t = []
            for v in rowsizes:
                if v:
                    t.append(v)
                else:
                    t.append(default)
            rowsizes = t
        # rescale columns
        columnsizes = []
        if obj.AutoWidth.Value:
            if obj.AutoWidth.Value > obj.Width.Value:
                FreeCAD.Console.PrintError(translate("Arch", "Auto width is larger than width"))
                return [], [], []
            cols = int(math.floor(obj.Width.Value / obj.AutoWidth.Value))
            for i in range(cols):
                columnsizes.append(obj.AutoWidth.Value)
            columnsizes.append(obj.Width.Value - cols * obj.AutoWidth.Value)
        else:
            reserved_columnsize = sum(v for v in obj.ColumnSize)
            if reserved_columnsize > obj.Width.Value:
                FreeCAD.Console.PrintError(
                    translate("Arch", "Total column size is larger than width")
                )
                return [], [], []
            for i in range(obj.Columns):
                v = 0
                if i < len(obj.ColumnSize):
                    v = obj.ColumnSize[i]
                columnsizes.append(v)
            e = len([v for v in columnsizes if v == 0])
            default = obj.Width.Value - reserved_columnsize
            if e:
                default = default / e
            t = []
            for v in columnsizes:
                if v:
                    t.append(v)
                else:
                    t.append(default)
            columnsizes = t
        # format span groups from [row,col,rowspan,colspan] to [faceindexes]
        spangroups = []
        for s in obj.Spans:
            nspan = []
            span = [int(i.strip()) for i in s.split(",")]
            for row in range(span[2]):
                for column in range(span[3]):
                    nspan.append((span[0] + row) * obj.Columns + (span[1] + column))
            spangroups.append(nspan)
        return rowsizes, columnsizes, spangroups

    def execute(self, obj):

        pl = obj.Placement
        rowsizes, columnsizes, spangroups = self.getSizes(obj)
        # print rowsizes,columnsizes,spangroups
        # create one face for each cell
        faces = []
        facenumber = 0
        rowoffset = 0
        for row in rowsizes:
            columnoffset = 0
            for column in columnsizes:
                v1 = FreeCAD.Vector(columnoffset, rowoffset, 0)
                v2 = v1.add(FreeCAD.Vector(column, 0, 0))
                v3 = v2.add(FreeCAD.Vector(0, -row, 0))
                v4 = v3.add(FreeCAD.Vector(-column, 0, 0))
                f = Part.Face(Part.makePolygon([v1, v2, v3, v4, v1]))
                if not facenumber in obj.HiddenFaces:
                    spanning = False
                    for i in range(len(spangroups)):
                        if facenumber in spangroups[i]:
                            g = spangroups[i]
                            g[g.index(facenumber)] = f
                            spangroups[i] = g
                            spanning = True
                            break
                    if not spanning:
                        faces.append(f)
                facenumber += 1
                columnoffset += column
            rowoffset -= row
        # join spangroups
        for g in spangroups:
            s = Part.makeShell(g)
            s = s.removeSplitter()
            faces.extend(s.Faces)
        if faces:
            obj.Shape = Part.makeCompound(faces)
            obj.Placement = pl

    def getPoints(self, obj):
        "returns the gridpoints"

        def remdupes(pts):
            # eliminate possible duplicates
            ret = []
            for p in pts:
                if not p in ret:
                    ret.append(p)
            return ret

        if obj.PointsOutput == "Vertices":
            return [v.Point for v in obj.Shape.Vertexes]
        elif obj.PointsOutput == "Edges":
            return remdupes([e.CenterOfMass for e in obj.Shape.Edges])
        elif obj.PointsOutput == "Vertical Edges":
            rv = obj.Placement.Rotation.multVec(FreeCAD.Vector(0, 1, 0))
            edges = [
                e
                for e in obj.Shape.Edges
                if round(rv.getAngle(e.tangentAt(e.FirstParameter)), 4) in [0, 3.1416]
            ]
            return remdupes([e.CenterOfMass for e in edges])
        elif obj.PointsOutput == "Horizontal Edges":
            rv = obj.Placement.Rotation.multVec(FreeCAD.Vector(1, 0, 0))
            edges = [
                e
                for e in obj.Shape.Edges
                if round(rv.getAngle(e.tangentAt(e.FirstParameter)), 4) in [0, 3.1416]
            ]
            return remdupes([e.CenterOfMass for e in edges])
        else:
            return [f.CenterOfMass for f in obj.Shape.Faces]

    def dumps(self):

        return None

    def loads(self, state):

        self.Type = "Grid"


class ViewProviderArchGrid:
    "A View Provider for the Arch Grid"

    def __init__(self, vobj):

        vobj.Proxy = self

    def getIcon(self):

        import Arch_rc

        return ":/icons/Arch_Grid.svg"

    def attach(self, vobj):
        self.Object = vobj.Object

    def setEdit(self, vobj, mode):
        if mode != 0:
            return None

        taskd = ArchGridTaskPanel(vobj.Object)
        FreeCADGui.Control.showDialog(taskd)
        return True

    def unsetEdit(self, vobj, mode):
        if mode != 0:
            return None

        FreeCADGui.Control.closeDialog()
        return True

    def setupContextMenu(self, vobj, menu):
        if FreeCADGui.activeWorkbench().name() != "BIMWorkbench":
            return
        actionEdit = QtGui.QAction(translate("Arch", "Edit"), menu)
        QtCore.QObject.connect(actionEdit, QtCore.SIGNAL("triggered()"), self.edit)
        menu.addAction(actionEdit)

    def edit(self):
        FreeCADGui.ActiveDocument.setEdit(self.Object, 0)

    def dumps(self):

        return None

    def loads(self, state):

        return None


class ArchGridTaskPanel:
    """A TaskPanel for the Arch Grid"""

    def __init__(self, obj):

        # length, width, label
        self.width = 0
        self.height = 0
        self.spans = []
        self.obj = obj
        self.form = QtGui.QWidget()
        uil = FreeCADGui.UiLoader()
        layout = QtGui.QVBoxLayout(self.form)
        hbox3 = QtGui.QHBoxLayout()
        layout.addLayout(hbox3)
        self.wLabel = QtGui.QLabel(self.form)
        hbox3.addWidget(self.wLabel)
        self.widthUi = uil.createWidget("Gui::InputField")
        hbox3.addWidget(self.widthUi)
        hbox4 = QtGui.QHBoxLayout()
        layout.addLayout(hbox4)
        self.hLabel = QtGui.QLabel(self.form)
        hbox4.addWidget(self.hLabel)
        self.heightUi = uil.createWidget("Gui::InputField")
        hbox4.addWidget(self.heightUi)
        self.title = QtGui.QLabel(self.form)
        layout.addWidget(self.title)

        # grid
        self.table = QtGui.QTableWidget(self.form)
        layout.addWidget(self.table)
        style = "QTableWidget { background-color: #ffffff; gridline-color: #000000; }"
        self.table.setStyleSheet(style)
        self.table.horizontalHeader().setResizeMode(QtGui.QHeaderView.Stretch)

        # row/column buttons
        hbox1 = QtGui.QHBoxLayout()
        layout.addLayout(hbox1)
        self.addRowButton = QtGui.QPushButton(self.form)
        self.addRowButton.setIcon(QtGui.QIcon(":/icons/Arch_Add.svg"))
        hbox1.addWidget(self.addRowButton)
        self.delRowButton = QtGui.QPushButton(self.form)
        self.delRowButton.setIcon(QtGui.QIcon(":/icons/Arch_Remove.svg"))
        hbox1.addWidget(self.delRowButton)
        self.addColumnButton = QtGui.QPushButton(self.form)
        self.addColumnButton.setIcon(QtGui.QIcon(":/icons/Arch_Add.svg"))
        hbox1.addWidget(self.addColumnButton)
        self.delColumnButton = QtGui.QPushButton(self.form)
        self.delColumnButton.setIcon(QtGui.QIcon(":/icons/Arch_Remove.svg"))
        hbox1.addWidget(self.delColumnButton)

        # span buttons
        hbox2 = QtGui.QHBoxLayout()
        layout.addLayout(hbox2)
        self.spanButton = QtGui.QPushButton(self.form)
        self.spanButton.setIcon(QtGui.QIcon(":/icons/SpreadsheetMergeCells.svg"))
        hbox2.addWidget(self.spanButton)
        self.spanButton.setEnabled(False)
        self.delSpanButton = QtGui.QPushButton(self.form)
        self.delSpanButton.setIcon(QtGui.QIcon(":/icons/SpreadsheetSplitCell.svg"))
        hbox2.addWidget(self.delSpanButton)
        self.delSpanButton.setEnabled(False)

        # signals
        QtCore.QObject.connect(self.widthUi, QtCore.SIGNAL("valueChanged(double)"), self.setWidth)
        QtCore.QObject.connect(self.heightUi, QtCore.SIGNAL("valueChanged(double)"), self.setHeight)
        QtCore.QObject.connect(self.table, QtCore.SIGNAL("itemSelectionChanged()"), self.checkSpan)
        QtCore.QObject.connect(self.addRowButton, QtCore.SIGNAL("clicked()"), self.addRow)
        QtCore.QObject.connect(self.delRowButton, QtCore.SIGNAL("clicked()"), self.delRow)
        QtCore.QObject.connect(self.addColumnButton, QtCore.SIGNAL("clicked()"), self.addColumn)
        QtCore.QObject.connect(self.delColumnButton, QtCore.SIGNAL("clicked()"), self.delColumn)
        QtCore.QObject.connect(self.spanButton, QtCore.SIGNAL("clicked()"), self.addSpan)
        QtCore.QObject.connect(self.delSpanButton, QtCore.SIGNAL("clicked()"), self.removeSpan)
        QtCore.QObject.connect(
            self.table.horizontalHeader(),
            QtCore.SIGNAL("sectionDoubleClicked(int)"),
            self.editHorizontalHeader,
        )
        QtCore.QObject.connect(
            self.table.verticalHeader(),
            QtCore.SIGNAL("sectionDoubleClicked(int)"),
            self.editVerticalHeader,
        )
        self.update()
        self.retranslateUi()

    def retranslateUi(self, widget=None):

        self.form.setWindowTitle(QtGui.QApplication.translate("Arch", "Grid", None))
        self.wLabel.setText(QtGui.QApplication.translate("Arch", "Total width", None))
        self.hLabel.setText(QtGui.QApplication.translate("Arch", "Total height", None))
        self.addRowButton.setText(QtGui.QApplication.translate("Arch", "Add Row", None))
        self.delRowButton.setText(QtGui.QApplication.translate("Arch", "Delete Row", None))
        self.addColumnButton.setText(QtGui.QApplication.translate("Arch", "Add Column", None))
        self.delColumnButton.setText(QtGui.QApplication.translate("Arch", "Delete Column", None))
        self.spanButton.setText(QtGui.QApplication.translate("Arch", "Create Span", None))
        self.delSpanButton.setText(QtGui.QApplication.translate("Arch", "Remove Span", None))
        self.title.setText(
            QtGui.QApplication.translate("Arch", "Rows", None)
            + ": "
            + str(self.table.rowCount())
            + " / "
            + QtGui.QApplication.translate("Arch", "Columns", None)
            + ": "
            + str(self.table.columnCount())
        )

    def update(self):

        self.table.clear()
        if self.obj.Rows:
            self.table.setRowCount(self.obj.Rows)
            vlabels = ["0" for i in range(self.obj.Rows)]
            for i, v in enumerate(self.obj.RowSize):
                if i < len(vlabels):
                    vlabels[i] = FreeCAD.Units.Quantity(v, FreeCAD.Units.Length).getUserPreferred()[
                        0
                    ]
            self.table.setVerticalHeaderLabels(vlabels)
        if self.obj.Columns:
            self.table.setColumnCount(self.obj.Columns)
            hlabels = ["0" for i in range(self.obj.Columns)]
            for i, v in enumerate(self.obj.ColumnSize):
                if i < len(hlabels):
                    hlabels[i] = FreeCAD.Units.Quantity(v, FreeCAD.Units.Length).getUserPreferred()[
                        0
                    ]
            self.table.setHorizontalHeaderLabels(hlabels)
        self.widthUi.setText(self.obj.Width.getUserPreferred()[0])
        self.heightUi.setText(self.obj.Height.getUserPreferred()[0])
        self.spans = []
        for s in self.obj.Spans:
            span = [int(i.strip()) for i in s.split(",")]
            if len(span) == 4:
                self.table.setSpan(span[0], span[1], span[2], span[3])
                self.spans.append(span)

    def checkSpan(self):

        if self.table.selectedRanges():
            self.spanButton.setEnabled(False)
            self.delSpanButton.setEnabled(False)
            if len(self.table.selectedRanges()) > 1:
                self.spanButton.setEnabled(True)
            for r in self.table.selectedRanges():
                if (r.rowCount() * r.columnCount()) > 1:
                    self.spanButton.setEnabled(True)
                elif (r.rowCount() * r.columnCount()) == 1:
                    if (
                        self.table.rowSpan(r.topRow(), r.leftColumn()) > 1
                        or self.table.columnSpan(r.topRow(), r.leftColumn()) > 1
                    ):
                        self.delSpanButton.setEnabled(True)
        else:
            self.spanButton.setEnabled(False)
            self.delSpanButton.setEnabled(False)

    def addRow(self):

        c = self.table.currentRow()
        self.table.insertRow(c + 1)
        self.table.setVerticalHeaderItem(c + 1, QtGui.QTableWidgetItem("0"))
        self.retranslateUi()

    def delRow(self):

        if self.table.selectedRanges():
            self.table.removeRow(self.table.currentRow())
            self.retranslateUi()

    def addColumn(self):

        c = self.table.currentColumn()
        self.table.insertColumn(c + 1)
        self.table.setHorizontalHeaderItem(c + 1, QtGui.QTableWidgetItem("0"))
        self.retranslateUi()

    def delColumn(self):

        if self.table.selectedRanges():
            self.table.removeColumn(self.table.currentColumn())
            self.retranslateUi()

    def addSpan(self):

        for r in self.table.selectedRanges():
            if r.rowCount() * r.columnCount() > 1:
                self.table.setSpan(r.topRow(), r.leftColumn(), r.rowCount(), r.columnCount())
                self.spans.append([r.topRow(), r.leftColumn(), r.rowCount(), r.columnCount()])
                return
        if len(self.table.selectedRanges()) > 1:
            tr = 99999
            br = 0
            lc = 99999
            rc = 0
            for r in self.table.selectedRanges():
                if r.topRow() < tr:
                    tr = r.topRow()
                if r.bottomRow() > br:
                    br = r.bottomRow()
                if r.leftColumn() < lc:
                    lc = r.leftColumn()
                if r.rightColumn() > rc:
                    rc = r.rightColumn()
            if (rc >= lc) and (br >= tr):
                self.table.setSpan(tr, lc, (br - tr) + 1, (rc - lc) + 1)
                self.spans.append([tr, lc, (br - tr) + 1, (rc - lc) + 1])

    def removeSpan(self):

        for r in self.table.selectedRanges():
            if r.rowCount() * r.columnCount() == 1:
                if (
                    self.table.rowSpan(r.topRow(), r.leftColumn()) > 1
                    or self.table.columnSpan(r.topRow(), r.leftColumn()) > 1
                ):
                    self.table.setSpan(r.topRow(), r.leftColumn(), 1, 1)
                    f = None
                    for i, s in enumerate(self.spans):
                        if (s[0] == r.topRow()) and (s[1] == r.leftColumn()):
                            f = i
                            break
                    if f is not None:
                        self.spans.pop(f)

    def editHorizontalHeader(self, index):

        val, ok = QtGui.QInputDialog.getText(None, "Edit size", "New size")
        if ok:
            self.table.setHorizontalHeaderItem(index, QtGui.QTableWidgetItem(val))

    def editVerticalHeader(self, index):

        val, ok = QtGui.QInputDialog.getText(None, "Edit size", "New size")
        if ok:
            self.table.setVerticalHeaderItem(index, QtGui.QTableWidgetItem(val))

    def setWidth(self, d):

        self.width = d

    def setHeight(self, d):

        self.height = d

    def accept(self):

        self.obj.Width = self.width
        self.obj.Height = self.height
        self.obj.Rows = self.table.rowCount()
        self.obj.Columns = self.table.columnCount()
        self.obj.RowSize = [
            FreeCAD.Units.Quantity(self.table.verticalHeaderItem(i).text()).Value
            for i in range(self.table.rowCount())
        ]
        self.obj.ColumnSize = [
            FreeCAD.Units.Quantity(self.table.horizontalHeaderItem(i).text()).Value
            for i in range(self.table.columnCount())
        ]
        self.obj.Spans = [str(s)[1:-1] for s in self.spans]
        FreeCAD.ActiveDocument.recompute()
        FreeCADGui.ActiveDocument.resetEdit()
        return True

    def reject(self):

        FreeCADGui.ActiveDocument.resetEdit()
        return True