"""Utility Functions."""
from typing import NoReturn, Self

from PyQt6.QtCore import QCoreApplication, QDir, QStandardPaths, Qt
from PyQt6.QtGui import QColor, QFont, QFontDatabase
from PyQt6.QtNetwork import QNetworkAccessManager, QNetworkDiskCache
from PyQt6.QtSql import QSqlQuery

translate = QCoreApplication.translate


def query_error(query: QSqlQuery) -> NoReturn:
    """Standarized query error reporter."""
    print(
        translate("MainWindow", "SQL Error:\n")
        + "{}\n{}\n{}:{}".format(
            query.executedQuery(),
            query.boundValues(),
            query.lastError().type(),
            query.lastError().text(),
        )
    )
    raise Exception(translate("MainWindow", "SQL Error"))

class Resources:
    _instance = None
    nam = QNetworkAccessManager()
    headerFont: QFont
    labelFont: QFont
    boldFont: QFont
    textFont: QFont
    italicFont: QFont
    capsFont: QFont
    smallCapsFont: QFont
    phonicFont: QFont

    baseColor: QColor
    linkColor: QColor
    subduedColor: QColor

    def __new__(cls: type[Self]) -> Self:
        if cls._instance:
            return cls._instance
        cls._instance = super(Resources, cls).__new__(cls)
        #
        # Fonts
        #
        cls.headerFont = QFontDatabase.font("OpenDyslexic", None, 10)
        cls.headerFont.setPixelSize(48)
        cls.labelFont = QFont(cls.headerFont)
        cls.labelFont.setPixelSize(30)
        cls.boldFont = QFont(cls.headerFont)
        cls.boldFont.setPixelSize(20)
        cls.textFont = QFont(cls.boldFont)
        cls.italicFont = QFont(cls.boldFont)
        cls.capsFont = QFont(cls.boldFont)
        cls.smallCapsFont = QFont(cls.boldFont)

        cls.headerFont.setWeight(QFont.Weight.Bold)
        cls.boldFont.setBold(True)
        cls.italicFont.setItalic(True)
        print(f"Resources().italicFont: {cls.italicFont.toString()}")
        print(f"Resources().boldFont:   {cls.boldFont.toString()}")
        cls.capsFont.setCapitalization(QFont.Capitalization.AllUppercase)
        cls.smallCapsFont.setCapitalization(QFont.Capitalization.SmallCaps)

        cls.phonicFont = QFontDatabase.font("Gentium", None, 10)
        cls.phonicFont.setPixelSize(20)

        #
        # colors
        #
        cls.baseColor = QColor(Qt.GlobalColor.white)
        cls.linkColor = QColor("#4a7d95")
        cls.subduedColor = QColor(Qt.GlobalColor.gray)

        #
        # Setup the Network Manager
        #
        cacheDir = QDir(
            QStandardPaths.writableLocation(
                QStandardPaths.StandardLocation.GenericCacheLocation
            )
        )
        cacheDir.mkdir("Troglodite")
        cacheDir = QDir(cacheDir.path() + QDir.separator() + "Troglodite")
        netCache = QNetworkDiskCache()
        netCache.setCacheDirectory(cacheDir.path())
        cls.nam.setCache(netCache)
        return cls._instance