# Created By: Virgil Dupras
# Created On: 2009-05-24
# Copyright 2014 Hardcoded Software (http://www.hardcoded.net)
#
# This software is licensed under the "BSD" License as described in the "LICENSE" file,
# which should be included with this package. The terms are also available at
# http://www.hardcoded.net/licenses/bsd_license

import sys
from PyQt5.QtCore import QSize
from PyQt5.QtWidgets import (
    QVBoxLayout, QHBoxLayout, QLabel, QSizePolicy, QSpacerItem, QWidget,
    QLineEdit, QApplication
)

from hscommon.plat import ISWINDOWS, ISLINUX
from hscommon.trans import trget
from hscommon.util import tryint

from core.scanner import ScanType

from ..base.preferences_dialog import PreferencesDialogBase
from . import preferences

tr = trget('ui')

SCAN_TYPE_ORDER = [
    ScanType.Filename,
    ScanType.Contents,
    ScanType.Folders,
]

class PreferencesDialog(PreferencesDialogBase):
    def __init__(self, parent, app, **kwargs):
        super().__init__(parent, app, **kwargs)

        self.scanTypeComboBox.currentIndexChanged[int].connect(self.scanTypeChanged)

    def _setupPreferenceWidgets(self):
        scanTypeLabels = [
            tr("Filename"),
            tr("Contents"),
            tr("Folders"),
        ]
        self._setupScanTypeBox(scanTypeLabels)
        self._setupFilterHardnessBox()
        self.widgetsVLayout.addLayout(self.filterHardnessHLayout)
        self.widget = QWidget(self)
        self.widget.setMinimumSize(QSize(0, 136))
        self.verticalLayout_4 = QVBoxLayout(self.widget)
        self._setupAddCheckbox('wordWeightingBox', tr("Word weighting"), self.widget)
        self.verticalLayout_4.addWidget(self.wordWeightingBox)
        self._setupAddCheckbox('matchSimilarBox', tr("Match similar words"), self.widget)
        self.verticalLayout_4.addWidget(self.matchSimilarBox)
        self._setupAddCheckbox('mixFileKindBox', tr("Can mix file kind"), self.widget)
        self.verticalLayout_4.addWidget(self.mixFileKindBox)
        self._setupAddCheckbox('useRegexpBox', tr("Use regular expressions when filtering"), self.widget)
        self.verticalLayout_4.addWidget(self.useRegexpBox)
        self._setupAddCheckbox('removeEmptyFoldersBox', tr("Remove empty folders on delete or move"), self.widget)
        self.verticalLayout_4.addWidget(self.removeEmptyFoldersBox)
        self.horizontalLayout_2 = QHBoxLayout()
        self._setupAddCheckbox('ignoreSmallFilesBox', tr("Ignore files smaller than"), self.widget)
        self.horizontalLayout_2.addWidget(self.ignoreSmallFilesBox)
        self.sizeThresholdEdit = QLineEdit(self.widget)
        sizePolicy = QSizePolicy(QSizePolicy.Maximum, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.sizeThresholdEdit.sizePolicy().hasHeightForWidth())
        self.sizeThresholdEdit.setSizePolicy(sizePolicy)
        self.sizeThresholdEdit.setMaximumSize(QSize(50, 16777215))
        self.horizontalLayout_2.addWidget(self.sizeThresholdEdit)
        self.label_6 = QLabel(self.widget)
        self.label_6.setText(tr("KB"))
        self.horizontalLayout_2.addWidget(self.label_6)
        spacerItem1 = QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum)
        self.horizontalLayout_2.addItem(spacerItem1)
        self.verticalLayout_4.addLayout(self.horizontalLayout_2)
        self._setupAddCheckbox(
            'ignoreHardlinkMatches',
            tr("Ignore duplicates hardlinking to the same file"), self.widget
        )
        self.verticalLayout_4.addWidget(self.ignoreHardlinkMatches)
        self._setupAddCheckbox('debugModeBox', tr("Debug mode (restart required)"), self.widget)
        self.verticalLayout_4.addWidget(self.debugModeBox)
        self.widgetsVLayout.addWidget(self.widget)
        self._setupBottomPart()

    def _setupUi(self):
        PreferencesDialogBase._setupUi(self)

        if ISLINUX:
            # Under linux, whether it's a Qt layout bug or something else, the size threshold text edit
            # doesn't have enough space, so we make the pref pane higher to compensate.
            self.resize(self.width(), 530)
        elif ISWINDOWS:
            self.resize(self.width(), 440)

    def _load(self, prefs, setchecked):
        scan_type_index = SCAN_TYPE_ORDER.index(prefs.scan_type)
        self.scanTypeComboBox.setCurrentIndex(scan_type_index)
        setchecked(self.matchSimilarBox, prefs.match_similar)
        setchecked(self.wordWeightingBox, prefs.word_weighting)
        setchecked(self.ignoreSmallFilesBox, prefs.ignore_small_files)
        self.sizeThresholdEdit.setText(str(prefs.small_file_threshold))

    def _save(self, prefs, ischecked):
        prefs.scan_type = SCAN_TYPE_ORDER[self.scanTypeComboBox.currentIndex()]
        prefs.match_similar = ischecked(self.matchSimilarBox)
        prefs.word_weighting = ischecked(self.wordWeightingBox)
        prefs.ignore_small_files = ischecked(self.ignoreSmallFilesBox)
        prefs.small_file_threshold = tryint(self.sizeThresholdEdit.text())

    def resetToDefaults(self):
        self.load(preferences.Preferences())

    #--- Events
    def scanTypeChanged(self, index):
        scan_type = SCAN_TYPE_ORDER[self.scanTypeComboBox.currentIndex()]
        word_based = scan_type == ScanType.Filename
        self.filterHardnessSlider.setEnabled(word_based)
        self.matchSimilarBox.setEnabled(word_based)
        self.wordWeightingBox.setEnabled(word_based)


if __name__ == '__main__':
    from ..testapp import TestApp
    app = QApplication([])
    dgapp = TestApp()
    dialog = PreferencesDialog(None, dgapp)
    dialog.show()
    sys.exit(app.exec_())