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

# ***************************************************************************
# *   Copyright (c) 2018 sliptonic <shopinthewoods@gmail.com>               *
# *                                                                         *
# *   This program is free software; you can redistribute it and/or modify  *
# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
# *   as published by the Free Software Foundation; either version 2 of     *
# *   the License, or (at your option) any later version.                   *
# *   for detail see the LICENCE text file.                                 *
# *                                                                         *
# *   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 Library General Public License for more details.                  *
# *                                                                         *
# *   You should have received a copy of the GNU Library General Public     *
# *   License along with this program; if not, write to the Free Software   *
# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
# *   USA                                                                   *
# *                                                                         *
# ***************************************************************************

from PySide import QtCore, QtGui
from collections import Counter
import FreeCAD
import FreeCADGui
import Path
import Path.Base.Util as PathUtil
import Path.Main.Job as PathJob
import Path.Main.Stock as PathStock
import glob
import os

translate = FreeCAD.Qt.translate


if False:
    Path.Log.setLevel(Path.Log.Level.DEBUG, Path.Log.thisModule())
    Path.Log.trackModule(Path.Log.thisModule())
else:
    Path.Log.setLevel(Path.Log.Level.INFO, Path.Log.thisModule())


class _ItemDelegate(QtGui.QStyledItemDelegate):
    def __init__(self, controller, parent):
        self.controller = controller
        QtGui.QStyledItemDelegate.__init__(self, parent)

    def createEditor(self, parent, option, index):
        editor = QtGui.QSpinBox(parent)
        self.controller.setupColumnEditor(index, editor)
        return editor


class JobCreate:
    DataObject = QtCore.Qt.ItemDataRole.UserRole

    def __init__(self, parent=None, sel=None):
        self._warnUserIfNotUsingMinutes()

        self.dialog = FreeCADGui.PySideUic.loadUi(":/panels/DlgJobCreate.ui")
        self.itemsSolid = QtGui.QStandardItem(translate("CAM_Job", "Solids"))
        self.items2D = QtGui.QStandardItem(translate("CAM_Job", "2D"))
        self.itemsJob = QtGui.QStandardItem(translate("CAM_Job", "Jobs"))
        self.dialog.templateGroup.hide()
        self.dialog.modelGroup.hide()

        # debugging support
        self.candidates = None
        self.delegate = None
        self.index = None
        self.model = None

    def _getMinuteBasedSchemas(self):
        """Dynamically discover which unit schemas support velocity in minutes."""
        internal_names = FreeCAD.Units.listSchemas()
        minute_based_schemes = []

        # Create a test velocity quantity
        q = FreeCAD.Units.Quantity(1, FreeCAD.Units.Velocity)

        for i, key in enumerate(internal_names):
            try:
                label = FreeCAD.Units.listSchemas(i)
                r = FreeCAD.Units.schemaTranslate(q, i)
                if "/min" in r[2]:
                    minute_based_schemes.append({"id": i, "label": label})
            except (IndexError, TypeError):
                # Skip invalid schema indices
                continue

        return minute_based_schemes

    def _currentSchemaUsesMinutes(self):
        """Test if the current unit schema uses minutes for velocity."""
        try:
            # Create a test velocity quantity
            q = FreeCAD.Units.Quantity(1, FreeCAD.Units.Velocity)

            # Get current schema's representation of velocity
            current_representation = q.getUserPreferred()[2]

            # Check if the current representation contains '/min'
            return "/min" in current_representation
        except Exception:
            # If we can't determine, assume it doesn't use minutes
            return False

    def _warnUserIfNotUsingMinutes(self):
        # Warn user if current schema doesn't use minute for time in velocity
        if Path.Preferences.suppressVelocity():
            return

        # Test if current schema uses minutes for velocity
        if self._currentSchemaUsesMinutes():
            return

        # Get all minute-based schemas for the dialog
        minute_based_schemes = self._getMinuteBasedSchemas()

        # Create custom dialog with unit schema selection
        dialog = QtGui.QDialog()
        dialog.setWindowTitle(translate("CAM_Job", "Warning: Incompatible Unit Schema"))
        dialog.setModal(True)
        dialog.resize(500, 400)

        layout = QtGui.QVBoxLayout(dialog)

        # Warning message
        warning_label = QtGui.QLabel()
        warning_label.setText(
            translate(
                "CAM_Job",
                "<b>This document uses an improper unit schema which can result in "
                "dangerous situations and machine crashes!</b>",
            )
        )
        warning_label.setWordWrap(True)
        warning_label.setStyleSheet("color: red; font-weight: bold; margin-bottom: 10px;")
        layout.addWidget(warning_label)

        # Current schema info
        current_info = QtGui.QLabel()
        current_info.setText(
            translate(
                "CAM_Job",
                "Current unit schema '{}' expresses velocity in values <i>per second</i>.",
            ).format(FreeCAD.ActiveDocument.UnitSystem)
        )
        current_info.setWordWrap(True)
        layout.addWidget(current_info)

        # Recommendation
        recommendation = QtGui.QLabel()
        recommendation.setText(
            translate(
                "CAM_Job",
                "Please select a unit schema that expresses feed rates <i>per minute</i> instead:",
            )
        )
        recommendation.setWordWrap(True)
        layout.addWidget(recommendation)

        # Unit schema selection
        schema_group = QtGui.QGroupBox(translate("CAM_Job", "Recommended Unit Schemas"))
        schema_layout = QtGui.QVBoxLayout(schema_group)

        self.schema_buttons = []
        for i, schema in enumerate(minute_based_schemes):
            radio = QtGui.QRadioButton(schema["label"])
            radio.setProperty("schema_id", schema["id"])  # Store the schema ID
            if i == 0:  # Select first (most preferred) by default
                radio.setChecked(True)
            self.schema_buttons.append(radio)
            schema_layout.addWidget(radio)

        layout.addWidget(schema_group)

        # Additional info
        info_label = QtGui.QLabel()
        info_label.setText(
            translate(
                "CAM_Job",
                "Keeping the current unit schema can result in dangerous G-code errors. "
                "For details please refer to the "
                "<a href='https://wiki.freecad.org/CAM_Workbench#Units'>Units section</a> "
                "of the CAM Workbench's wiki page.",
            )
        )
        info_label.setWordWrap(True)
        info_label.setOpenExternalLinks(True)
        layout.addWidget(info_label)

        # Buttons
        button_layout = QtGui.QHBoxLayout()

        change_button = QtGui.QPushButton(translate("CAM_Job", "Change Unit Schema"))
        change_button.setDefault(True)
        change_button.clicked.connect(lambda: self._applyUnitSchema(dialog))

        keep_button = QtGui.QPushButton(translate("CAM_Job", "Keep Current Schema"))
        keep_button.clicked.connect(dialog.reject)

        dont_show_button = QtGui.QPushButton(translate("CAM_Job", "Don't Show Again"))
        dont_show_button.clicked.connect(lambda: self._suppressWarning(dialog))

        button_layout.addWidget(change_button)
        button_layout.addWidget(keep_button)
        button_layout.addWidget(dont_show_button)

        layout.addLayout(button_layout)

        dialog.exec_()

    def _applyUnitSchema(self, dialog):
        """Apply the selected unit schema to the document."""
        selected_schema_id = None
        selected_schema_label = None
        for button in self.schema_buttons:
            if button.isChecked():
                selected_schema_id = button.property("schema_id")
                selected_schema_label = button.text()
                break

        if selected_schema_id is not None:
            try:
                FreeCAD.ActiveDocument.UnitSystem = selected_schema_id
                FreeCAD.ActiveDocument.recompute()

                # Show success message
                QtGui.QMessageBox.information(
                    dialog,
                    translate("CAM_Job", "Unit Schema Changed"),
                    translate("CAM_Job", "Unit schema successfully changed to '{}'.").format(
                        selected_schema_label
                    ),
                )
                dialog.accept()
            except Exception as e:
                QtGui.QMessageBox.critical(
                    dialog,
                    translate("CAM_Job", "Error"),
                    translate("CAM_Job", "Failed to change unit schema: {}").format(str(e)),
                )
        else:
            QtGui.QMessageBox.warning(
                dialog,
                translate("CAM_Job", "No Selection"),
                translate("CAM_Job", "Please select a unit schema."),
            )

    def _suppressWarning(self, dialog):
        """Suppress future warnings and close dialog."""
        Path.Preferences.preferences().SetBool(Path.Preferences.WarningSuppressVelocity, True)
        dialog.reject()

    def setupTitle(self, title):
        self.dialog.setWindowTitle(title)

    def setupModel(self, job=None):

        if job:
            preSelected = Counter(
                [
                    PathUtil.getPublicObject(job.Proxy.baseObject(job, obj)).Label
                    for obj in job.Model.Group
                ]
            )
            jobResources = job.Model.Group + [job.Stock]
        else:
            preSelected = Counter([obj.Label for obj in FreeCADGui.Selection.getSelection()])
            jobResources = []

        self.candidates = sorted(PathJob.ObjectJob.baseCandidates(), key=lambda o: o.Label)

        # If there is only one possibility we might as well make sure it's selected
        if not preSelected and 1 == len(self.candidates):
            preSelected = Counter([self.candidates[0].Label])

        expandSolids = False
        expand2Ds = False
        expandJobs = False

        for base in self.candidates:
            if (
                base not in jobResources
                and not PathJob.isResourceClone(job, base, None)
                and not hasattr(base, "StockType")
                and base.ViewObject.ShowInTree
                and base.TypeId != "App::DocumentObjectGroup"
            ):
                item0 = QtGui.QStandardItem()
                item1 = QtGui.QStandardItem()

                item0.setData(base.Label, QtCore.Qt.EditRole)
                item0.setData(base, self.DataObject)
                item0.setCheckable(True)
                item0.setEditable(False)

                item1.setEnabled(True)
                item1.setEditable(True)

                if base.Label in preSelected:
                    itemSelected = True
                    item0.setCheckState(QtCore.Qt.CheckState.Checked)
                    item1.setData(preSelected[base.Label], QtCore.Qt.EditRole)
                else:
                    itemSelected = False
                    item0.setCheckState(QtCore.Qt.CheckState.Unchecked)
                    item1.setData(0, QtCore.Qt.EditRole)

                if PathUtil.isSolid(base):
                    self.itemsSolid.appendRow([item0, item1])
                    if itemSelected:
                        expandSolids = True
                else:
                    self.items2D.appendRow([item0, item1])
                    if itemSelected:
                        expand2Ds = True

        for j in sorted(PathJob.Instances(), key=lambda x: x.Label):
            if j != job:
                item0 = QtGui.QStandardItem()
                item1 = QtGui.QStandardItem()

                item0.setData(j.Label, QtCore.Qt.EditRole)
                item0.setData(j, self.DataObject)
                item0.setCheckable(True)
                item0.setEditable(False)

                item1.setEnabled(True)
                item1.setEditable(True)

                if j.Label in preSelected:
                    expandJobs = True
                    item0.setCheckState(QtCore.Qt.CheckState.Checked)
                    item1.setData(preSelected[j.Label], QtCore.Qt.EditRole)
                else:
                    item0.setCheckState(QtCore.Qt.CheckState.Unchecked)
                    item1.setData(0, QtCore.Qt.EditRole)

                self.itemsJob.appendRow([item0, item1])

        self.delegate = _ItemDelegate(self, self.dialog.modelTree)
        self.model = QtGui.QStandardItemModel(self.dialog)
        self.model.setHorizontalHeaderLabels(
            [translate("CAM_Job", "Model"), translate("CAM_Job", "Count")]
        )

        if self.itemsSolid.hasChildren():
            self.model.appendRow(self.itemsSolid)
            if expandSolids or not (expand2Ds or expandJobs):
                expandSolids = True
        if self.items2D.hasChildren():
            self.model.appendRow(self.items2D)
        if self.itemsJob.hasChildren():
            self.model.appendRow(self.itemsJob)

        self.dialog.modelTree.setModel(self.model)
        self.dialog.modelTree.setItemDelegateForColumn(1, self.delegate)
        self.dialog.modelTree.expandAll()
        self.dialog.modelTree.resizeColumnToContents(0)
        self.dialog.modelTree.resizeColumnToContents(1)
        self.dialog.modelTree.collapseAll()

        if expandSolids:
            self.dialog.modelTree.setExpanded(self.itemsSolid.index(), True)
        if expand2Ds:
            self.dialog.modelTree.setExpanded(self.items2D.index(), True)
        if expandJobs:
            self.dialog.modelTree.setExpanded(self.itemsJob.index(), True)

        self.dialog.modelTree.setEditTriggers(QtGui.QAbstractItemView.AllEditTriggers)
        self.dialog.modelTree.setSelectionBehavior(QtGui.QAbstractItemView.SelectItems)

        self.dialog.modelGroup.show()

    def updateData(self, topLeft, bottomRight):
        if topLeft.column() == bottomRight.column() == 0:
            item0 = self.model.itemFromIndex(topLeft)
            item1 = self.model.itemFromIndex(topLeft.sibling(topLeft.row(), 1))
            if item0.checkState() == QtCore.Qt.Checked:
                if item1.data(QtCore.Qt.EditRole) == 0:
                    item1.setData(1, QtCore.Qt.EditRole)
            else:
                item1.setData(0, QtCore.Qt.EditRole)

        if topLeft.column() == bottomRight.column() == 1:
            item0 = self.model.itemFromIndex(topLeft.sibling(topLeft.row(), 0))
            item1 = self.model.itemFromIndex(topLeft)
            if item1.data(QtCore.Qt.EditRole) == 0:
                item0.setCheckState(QtCore.Qt.CheckState.Unchecked)
            else:
                item0.setCheckState(QtCore.Qt.CheckState.Checked)

    def item1ValueChanged(self, v):
        item0 = self.model.itemFromIndex(self.index.sibling(self.index.row(), 0))
        if 0 == v:
            item0.setCheckState(QtCore.Qt.CheckState.Unchecked)
        else:
            item0.setCheckState(QtCore.Qt.CheckState.Checked)

    def setupColumnEditor(self, index, editor):
        editor.setMinimum(0)
        editor.setMaximum(999999)
        self.index = index
        editor.valueChanged.connect(self.item1ValueChanged)

    def setupTemplate(self):
        templateFiles = []
        for path in Path.Preferences.searchPaths():
            cleanPaths = [
                f.replace("\\", "/") for f in self.templateFilesIn(path)
            ]  # Standardize slashes used across os platforms
            templateFiles.extend(cleanPaths)

        template = {}
        for tFile in templateFiles:
            name = os.path.split(os.path.splitext(tFile)[0])[1][4:]
            if name in template:
                basename = name
                i = 0
                while name in template:
                    i = i + 1
                    name = basename + " (%s)" % i
            Path.Log.track(name, tFile)
            template[name] = tFile
        selectTemplate = Path.Preferences.defaultJobTemplate()
        index = 0
        self.dialog.jobTemplate.addItem(translate("CAM_Job", "<none>"), "")
        for name in sorted(template):
            if template[name] == selectTemplate:
                index = self.dialog.jobTemplate.count()
            self.dialog.jobTemplate.addItem(name, template[name])
        self.dialog.jobTemplate.setCurrentIndex(index)
        self.dialog.templateGroup.show()

    def templateFilesIn(self, path):
        """templateFilesIn(path) ... answer all file in the given directory which fit the job template naming convention.
        PathJob template files are name job_*.json"""
        Path.Log.track(path)
        return glob.glob(path + "/job_*.json")

    def getModels(self):
        models = []

        for i in range(self.itemsSolid.rowCount()):
            for j in range(self.itemsSolid.child(i, 1).data(QtCore.Qt.EditRole)):
                models.append(self.itemsSolid.child(i).data(self.DataObject))

        for i in range(self.items2D.rowCount()):
            for j in range(self.items2D.child(i, 1).data(QtCore.Qt.EditRole)):
                models.append(self.items2D.child(i).data(self.DataObject))

        for i in range(self.itemsJob.rowCount()):
            for j in range(self.itemsJob.child(i, 1).data(QtCore.Qt.EditRole)):
                # Note that we do want to use the models (resource clones) of the
                # source job as base objects for the new job in order to get the
                # identical placement, and anything else that's been customized.
                models.extend(self.itemsJob.child(i, 0).data(self.DataObject).Model.Group)

        return models

    def getTemplate(self):
        """answer the file name of the template to be assigned"""
        return self.dialog.jobTemplate.itemData(self.dialog.jobTemplate.currentIndex())

    def exec_(self):
        # ml: For some reason the callback has to be unregistered, otherwise there is a
        # segfault when python is shutdown. To keep it symmetric I also put the callback
        # registration here
        self.model.dataChanged.connect(self.updateData)
        rc = self.dialog.exec_()
        self.model.dataChanged.disconnect()
        return rc


class JobTemplateExport:
    DataObject = QtCore.Qt.ItemDataRole.UserRole

    def __init__(self, job, parent=None):
        self.job = job
        self.dialog = FreeCADGui.PySideUic.loadUi(":/panels/DlgJobTemplateExport.ui")
        if parent:
            self.dialog.setParent(parent)
            parent.layout().addWidget(self.dialog)
            self.dialog.dialogButtonBox.hide()
        else:
            self.dialog.exportButtonBox.hide()
        self.updateUI()
        self.dialog.toolsGroup.clicked.connect(self.checkUncheckTools)

    def exportButton(self):
        return self.dialog.exportButton

    def updateUI(self):
        job = self.job
        if job.PostProcessor:
            ppHint = "%s %s %s" % (
                job.PostProcessor,
                job.PostProcessorArgs,
                job.PostProcessorOutputFile,
            )
            self.dialog.postProcessingHint.setText(ppHint)
        else:
            self.dialog.postProcessingGroup.setEnabled(False)
            self.dialog.postProcessingGroup.setChecked(False)

        if job.Stock and not PathJob.isResourceClone(job, "Stock", "Stock"):
            stockType = PathStock.StockType.FromStock(job.Stock)
            if stockType == PathStock.StockType.FromBase:
                seHint = translate("CAM_Job", "Base -/+ %.2f/%.2f %.2f/%.2f %.2f/%.2f") % (
                    job.Stock.ExtXneg,
                    job.Stock.ExtXpos,
                    job.Stock.ExtYneg,
                    job.Stock.ExtYpos,
                    job.Stock.ExtZneg,
                    job.Stock.ExtZpos,
                )
                self.dialog.stockPlacement.setChecked(False)
            elif stockType == PathStock.StockType.CreateBox:
                seHint = translate("CAM_Job", "Box: %.2f x %.2f x %.2f") % (
                    job.Stock.Length,
                    job.Stock.Width,
                    job.Stock.Height,
                )
            elif stockType == PathStock.StockType.CreateCylinder:
                seHint = translate("CAM_Job:", "Cylinder: %.2f x %.2f") % (
                    job.Stock.Radius,
                    job.Stock.Height,
                )
            elif stockType == PathStock.StockType.Unknown:
                seHint = "-"

            else:  # Existing Solid
                seHint = "-"
                Path.Log.error(translate("CAM_Job", "Unsupported stock type"))
            self.dialog.stockExtentHint.setText(seHint)
            spHint = "%s" % job.Stock.Placement
            self.dialog.stockPlacementHint.setText(spHint)

        rapidChanged = not job.SetupSheet.Proxy.hasDefaultToolRapids()
        depthsChanged = not job.SetupSheet.Proxy.hasDefaultOperationDepths()
        heightsChanged = not job.SetupSheet.Proxy.hasDefaultOperationHeights()
        coolantChanged = not job.SetupSheet.Proxy.hasDefaultCoolantMode()
        opsWithSettings = job.SetupSheet.Proxy.operationsWithSettings()
        settingsChanged = (
            rapidChanged
            or depthsChanged
            or heightsChanged
            or coolantChanged
            or 0 != len(opsWithSettings)
        )
        self.dialog.settingsGroup.setChecked(settingsChanged)
        self.dialog.settingToolRapid.setChecked(rapidChanged)
        self.dialog.settingOperationDepths.setChecked(depthsChanged)
        self.dialog.settingOperationHeights.setChecked(heightsChanged)
        self.dialog.settingCoolant.setChecked(coolantChanged)

        self.dialog.settingsOpsList.clear()
        for op in opsWithSettings:
            item = QtGui.QListWidgetItem(op)
            item.setCheckState(QtCore.Qt.CheckState.Checked)
            self.dialog.settingsOpsList.addItem(item)

        self.dialog.toolsList.clear()
        for tc in sorted(job.Tools.Group, key=lambda o: o.Label):
            item = QtGui.QListWidgetItem(tc.Label)
            item.setData(self.DataObject, tc)
            item.setCheckState(QtCore.Qt.CheckState.Checked)
            self.dialog.toolsList.addItem(item)

    def checkUncheckTools(self):
        state = (
            QtCore.Qt.CheckState.Checked
            if self.dialog.toolsGroup.isChecked()
            else QtCore.Qt.CheckState.Unchecked
        )
        for i in range(self.dialog.toolsList.count()):
            self.dialog.toolsList.item(i).setCheckState(state)

    def includePostProcessing(self):
        return self.dialog.postProcessingGroup.isChecked()

    def includeToolControllers(self):
        tcs = []
        for i in range(self.dialog.toolsList.count()):
            item = self.dialog.toolsList.item(i)
            if item.checkState() == QtCore.Qt.CheckState.Checked:
                tcs.append(item.data(self.DataObject))
        return tcs

    def includeStock(self):
        return self.dialog.stockGroup.isChecked()

    def includeStockExtent(self):
        return self.dialog.stockExtent.isChecked()

    def includeStockPlacement(self):
        return self.dialog.stockPlacement.isChecked()

    def includeSettings(self):
        return self.dialog.settingsGroup.isChecked()

    def includeSettingToolRapid(self):
        return self.dialog.settingToolRapid.isChecked()

    def includeSettingOperationHeights(self):
        return self.dialog.settingOperationHeights.isChecked()

    def includeSettingOperationDepths(self):
        return self.dialog.settingOperationDepths.isChecked()

    def includeSettingCoolant(self):
        return self.dialog.settingCoolant.isChecked()

    def includeSettingOpsSettings(self):
        ops = []
        for i in range(self.dialog.settingsOpsList.count()):
            item = self.dialog.settingsOpsList.item(i)
            if item.checkState() == QtCore.Qt.CheckState.Checked:
                ops.append(item.text())
        return ops

    def exec_(self):
        return self.dialog.exec_()