#!venv/bin/python3
import datetime
import sys
from typing import Any, cast

from PySide6.QtCore import (
    QCoreApplication,
    QDate,
    QEvent,
    QModelIndex,
    QObject,
    QPersistentModelIndex,
    QRect,
    QSize,
    Qt,
    Signal,
    Slot,
)
from PySide6.QtGui import QColor, QPainter, QTextDocument
from PySide6.QtSql import (
    QSqlDatabase,
    QSqlTableModel,
)
from PySide6.QtWidgets import (
    QAbstractItemView,
    QApplication,
    QHeaderView,
    QMainWindow,
    QStyle,
    QStyledItemDelegate,
    QStyleOptionViewItem,
    QWidget,
)

from docketModel import docketModel
from ui.MainWindow import Ui_MainWindow
from workers import loadCases, updateThread

translate = QCoreApplication.translate


class dateDelegate(QStyledItemDelegate):
    def displayText(self, value: QDate, _: Any) -> str:
        return value.toString("MMMM d, yyyy")


class QStyleOptionViewItemInit(QStyleOptionViewItem):
    backgroundBrush: QColor
    rect: QRect
    widget: QWidget
    text: str


class activeDelegate(QStyledItemDelegate):
    def initStyleOption(
        self,
        option: QStyleOptionViewItem,
        index: QModelIndex | QPersistentModelIndex,
        /,
    ) -> None:
        options = cast(QStyleOptionViewItemInit, option)
        super().initStyleOption(options, index)
        assert isinstance(index, QModelIndex)
        if index.siblingAtColumn(5).data() == 0:
            options.backgroundBrush = QColor(0x444444)
        return


class documentDelegate(QStyledItemDelegate):
    def initStyleOption(
        self,
        option: QStyleOptionViewItem,
        index: QModelIndex | QPersistentModelIndex,
        /,
    ) -> None:
        options = cast(QStyleOptionViewItemInit, option)
        super().initStyleOption(options, index)
        assert index.isValid() and isinstance(index, QModelIndex)
        if index.siblingAtColumn(6).data() == 0:
            options.backgroundBrush = QColor(0x444444)
        return

    def eventFilter(self, object: QObject, event: QEvent) -> bool:
        if event.type() in [
            QEvent.Type.MouseButtonPress,
            QEvent.Type.MouseButtonRelease,
        ]:
            return False
        return super().eventFilter(object, event)

    def event(self, ev: QEvent) -> bool:
        print(ev)
        return super(documentDelegate, self).event(ev)

    def paint(
        self,
        painter: QPainter,
        option: QStyleOptionViewItem,
        index: QModelIndex | QPersistentModelIndex,
    ) -> None:
        options = cast(QStyleOptionViewItemInit, option)
        self.initStyleOption(options, index)
        painter.save()
        doc = QTextDocument()
        doc.setTextWidth(options.rect.width())
        doc.setHtml(options.text)
        options.text = ""
        options.widget.style().drawControl(
            QStyle.ControlElement.CE_ItemViewItem,
            options,
            painter,
        )
        painter.translate(options.rect.left(), options.rect.top())
        clip = QRect(0, 0, options.rect.width(), options.rect.height())
        doc.drawContents(painter, clip)
        painter.restore()
        return

    def sizeHint(
        self,
        option: QStyleOptionViewItem,
        index: QModelIndex | QPersistentModelIndex,
    ) -> QSize:
        options = cast(QStyleOptionViewItemInit, option)
        self.initStyleOption(options, index)
        doc = QTextDocument()
        doc.setTextWidth(options.rect.width())
        doc.setHtml(options.text)
        doc.setTextWidth(options.rect.width())
        return QSize(int(doc.idealWidth()), int(doc.size().height()))


class MainWindow(QMainWindow, Ui_MainWindow):
    show_entries = Signal(int)

    loadThread = None

    def __init__(self) -> None:
        super(MainWindow, self).__init__()
        self.setupUi(self)
        self.loadThread = loadCases()
        self.loadThread.finished.connect(self.updateDone)
        self.loadThread.start()

        model = QSqlTableModel()
        model.setTable("cases")
        model.select()
        model.setHeaderData(1, Qt.Orientation.Horizontal, "Docket")
        model.setHeaderData(2, Qt.Orientation.Horizontal, "Petitioners")
        model.setHeaderData(3, Qt.Orientation.Horizontal, "Respondents")
        self.casesView.setModel(model)

        self.casesView.setSelectionMode(
            QAbstractItemView.SelectionMode.SingleSelection
        )
        self.casesView.setSelectionBehavior(
            QAbstractItemView.SelectionBehavior.SelectRows
        )
        self.casesView.hideColumn(0)
        self.casesView.setItemDelegate(activeDelegate())
        self.casesView.setItemDelegateForColumn(4, dateDelegate())
        self.casesView.resizeColumnToContents(1)
        self.casesView.resizeColumnToContents(5)
        header = self.casesView.horizontalHeader()
        header.setSectionResizeMode(2, QHeaderView.ResizeMode.Fixed)
        header.setSectionResizeMode(3, QHeaderView.ResizeMode.Fixed)
        self.show()
        remaining = (
            self.casesView.width()
            - header.sectionSize(1)
            - header.sectionSize(5)
            - 5
        )
        self.casesView.setColumnWidth(2, int(remaining * 0.5))
        self.casesView.setColumnWidth(3, int(remaining * 0.5))
        self.casesView.verticalHeader().hide()
        self.casesView.resizeRowsToContents()
        self.casesView.doubleClicked.connect(self.rowClicked)
        self.casesView.clicked.connect(self.rowClicked)

        self.docketView.setModel(docketModel())
        self.docketView.horizontalHeader().setSectionResizeMode(
            1, QHeaderView.ResizeMode.Stretch
        )
        self.docketView.resizeRowsToContents()
        self.docketView.setItemDelegateForColumn(1, documentDelegate())
        return

    @Slot(QModelIndex)  # type: ignore
    def rowClicked(self, index: QModelIndex) -> None:
        if not index.isValid():
            raise Exception("Bad index")
        docket = index.siblingAtColumn(1).data()
        self.docketLabel.setText(docket)
        self.show_entries.emit(index.siblingAtColumn(0).data())
        model = docketModel(index.siblingAtColumn(0).data())
        self.docketView.setModel(model)
        self.docketView.resizeColumnToContents(0)
        self.docketView.resizeRowsToContents()
        return

    updateThread = None

    @Slot()
    def on_updateButton_clicked(self) -> None:
        text = self.docketInput.toPlainText()
        print(f"on_updateButton_clicked(): {text}")
        if not self.updateThread:
            self.updateThread = updateThread()
            assert isinstance(self.updateThread, updateThread)
            self.updateThread.finished.connect(self.updateDone)
        self.updateThread.setDocketId(text)
        self.updateThread.start()
        return

    @Slot(QModelIndex)  # type: ignore
    def on_docketView_clicked(self, index: QModelIndex) -> None:
        print(f"view clicked, cell: {index.column()}, {index.row()}")
        return

    @Slot()
    def updateDone(self) -> None:
        self.updateThread = None
        print("Done updating")
        model: QSqlTableModel = cast(QSqlTableModel, self.casesView.model())
        query = model.query()
        query.exec()
        model.setQuery(query)
        return


def main() -> int:
    #
    app = QApplication(sys.argv)
    db = QSqlDatabase.addDatabase("QMYSQL")
    db.setHostName("ceph5")
    db.setDatabaseName("scotus")
    db.setUserName("scotus")
    db.setPassword("lechOtvirf8Om/")
    db.open()
    import lib.dbConfig

    window = MainWindow()
    return app.exec()


if __name__ == "__main__":
    sys.exit(main())