"""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)
        return cls._instance

    def __init__(self) -> None:
        super(Resources, self).__init__()
        #
        # Fonts
        #
        self.headerFont = QFontDatabase.font("OpenDyslexic", None, 10)
        self.headerFont.setPixelSize(48)
        self.labelFont = QFont(self.headerFont)
        self.labelFont.setPixelSize(30)
        self.boldFont = QFont(self.headerFont)
        self.boldFont.setPixelSize(20)
        self.textFont = QFont(self.boldFont)
        self.italicFont = QFont(self.boldFont)
        self.capsFont = QFont(self.boldFont)
        self.smallCapsFont = QFont(self.boldFont)

        self.headerFont.setWeight(QFont.Weight.Bold)
        self.boldFont.setBold(True)
        self.italicFont.setItalic(True)
        self.capsFont.setCapitalization(QFont.Capitalization.AllUppercase)
        self.smallCapsFont.setCapitalization(QFont.Capitalization.SmallCaps)

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

        #
        # colors
        #
        self.baseColor = QColor(Qt.GlobalColor.white)
        self.linkColor = QColor("#4a7d95")
        self.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())
        self.nam.setCache(netCache)
        return