import math

from PyQt6.QtCore import QEvent, QPointF, QRectF, QSize, Qt, QTimer, pyqtSignal
from PyQt6.QtGui import QColor, QPainter, QPolygonF
from PyQt6.QtWidgets import (
    QAbstractButton,
    QFrame,
    QGridLayout,
    QHBoxLayout,
    QLabel,
    QPushButton,
    QScrollArea,
    QSizePolicy,
    QVBoxLayout,
    QWidget,
)


def cimke(szoveg, nev=None, tordel=False):
    c = QLabel(szoveg)
    if nev:
        c.setObjectName(nev)
    c.setWordWrap(tordel)
    return c


def gomb(szoveg, fo=False, kicsi=False):
    g = QPushButton(szoveg)
    g.setCursor(Qt.CursorShape.PointingHandCursor)
    if fo:
        g.setProperty("fo", True)
    if kicsi:
        g.setProperty("kicsi", True)
    return g


def frissit_stilus(widget):
    widget.style().unpolish(widget)
    widget.style().polish(widget)


class Kartya(QFrame):
    def __init__(self, cim=None, terkoz=10, margo=20):
        super().__init__()
        self.setObjectName("kartya")
        self.elrendezes = QVBoxLayout(self)
        self.elrendezes.setContentsMargins(margo, margo, margo, margo)
        self.elrendezes.setSpacing(terkoz)
        if cim:
            self.elrendezes.addWidget(cimke(cim.upper(), "kartyacim"))


class Racs(QWidget):
    def __init__(self, min_szelesseg, terkoz=16):
        super().__init__()
        self.min_szelesseg = min_szelesseg
        self.elemek = []
        self.rejtett = set()
        self.oszlopok = 0
        self.racs = QGridLayout(self)
        self.racs.setContentsMargins(0, 0, 0, 0)
        self.racs.setSpacing(terkoz)

    def hozzaad(self, widget):
        self.elemek.append(widget)
        self._rendez(force=True)

    def resizeEvent(self, esemeny):
        super().resizeEvent(esemeny)
        self._rendez()

    def szur(self, lathatok):
        self.rejtett = {w for w in self.elemek if w not in lathatok}
        for w in self.elemek:
            w.setVisible(w not in self.rejtett)
        self._rendez(force=True)

    def _rendez(self, force=False):
        terkoz = self.racs.spacing()
        lathatok = [w for w in self.elemek if w not in self.rejtett]
        oszlopok = max(1, (self.width() + terkoz) // (self.min_szelesseg + terkoz))
        if self.min_szelesseg < 260:
            oszlopok = min(oszlopok, max(1, len(lathatok)))
        if oszlopok == self.oszlopok and not force:
            return
        self.oszlopok = oszlopok
        for w in self.elemek:
            self.racs.removeWidget(w)
        for i, w in enumerate(lathatok):
            self.racs.addWidget(w, i // oszlopok, i % oszlopok)
        self.updateGeometry()
        oldal = self.parent()
        while oldal is not None and not isinstance(oldal, Oldal):
            oldal = oldal.parent()
        if oldal is not None and oldal.kitolt:
            QTimer.singleShot(0, oldal._igazit)
        for o in range(self.racs.columnCount()):
            self.racs.setColumnStretch(o, 1 if o < oszlopok else 0)


class _KitoltoTartalom(QWidget):
    def sizeHint(self):
        return self.minimumSizeHint()

    def heightForWidth(self, szelesseg):
        elrendezes = self.layout()
        if elrendezes and elrendezes.hasHeightForWidth():
            return elrendezes.minimumHeightForWidth(szelesseg)
        return self.minimumSizeHint().height()


class Oldal(QScrollArea):
    def __init__(self, kozpont, eyebrow, cim, kitolt=False):
        super().__init__()
        self.kozpont = kozpont
        self.setWidgetResizable(True)
        self.setFrameShape(QFrame.Shape.NoFrame)
        self.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
        self.kitolt = kitolt
        tartalom = _KitoltoTartalom() if kitolt else QWidget()
        self.setWidget(tartalom)
        if kitolt:
            tartalom.installEventFilter(self)
        self.torzs = QVBoxLayout(tartalom)
        self.torzs.setContentsMargins(48, 40, 48, 40)
        self.torzs.setSpacing(32)

        fejlec = QHBoxLayout()
        fejlec.setSpacing(16)
        cimsor = QVBoxLayout()
        cimsor.setSpacing(6)
        self.eyebrow = cimke(eyebrow, "eyebrow")
        self.cim = cimke(cim.upper(), "h1")
        cimsor.addWidget(self.eyebrow)
        cimsor.addWidget(self.cim)
        fejlec.addLayout(cimsor)
        fejlec.addStretch(1)
        self.gombsor = QHBoxLayout()
        self.gombsor.setSpacing(8)
        fejlec.addLayout(self.gombsor)
        fejlec.setAlignment(self.gombsor, Qt.AlignmentFlag.AlignBottom)
        self.torzs.addLayout(fejlec)

    def eventFilter(self, objektum, esemeny):
        if self.kitolt and objektum is self.widget() and esemeny.type() == QEvent.Type.LayoutRequest:
            QTimer.singleShot(0, self._igazit)
        return super().eventFilter(objektum, esemeny)

    def resizeEvent(self, esemeny):
        super().resizeEvent(esemeny)
        if self.kitolt:
            self._igazit()

    def _igazit(self):
        tartalom = self.widget()
        nezet = self.viewport()
        magassag = max(nezet.height(), tartalom.heightForWidth(nezet.width()))
        if tartalom.height() != magassag or tartalom.width() != nezet.width():
            tartalom.resize(nezet.width(), magassag)

    def fejlec_gomb(self, gomb_widget):
        self.gombsor.addWidget(gomb_widget)
        return gomb_widget

    def megjelenik(self, *_):
        pass

    def indulaskor(self):
        pass

    def elerheto(self, *_):
        return True


class Fulsor(QWidget):
    def __init__(self, fulek, valtas):
        super().__init__()
        self.setObjectName("fulsor")
        self.setAttribute(Qt.WidgetAttribute.WA_StyledBackground, True)
        sor = QHBoxLayout(self)
        sor.setContentsMargins(0, 0, 0, 0)
        sor.setSpacing(0)
        self.gombok = {}
        for azon, szoveg in fulek:
            g = QPushButton(szoveg)
            g.setObjectName("ful")
            g.setCursor(Qt.CursorShape.PointingHandCursor)
            g.clicked.connect(lambda _=False, a=azon: valtas(a))
            self.gombok[azon] = g
            sor.addWidget(g)
        sor.addStretch(1)

    def aktiv(self, azon):
        for a, g in self.gombok.items():
            g.setProperty("aktiv", a == azon)
            frissit_stilus(g)


class Verem(QWidget):
    currentChanged = pyqtSignal(int)

    def __init__(self):
        super().__init__()
        self._lapok = []
        self._aktualis = -1
        self._elrendezes = QVBoxLayout(self)
        self._elrendezes.setContentsMargins(0, 0, 0, 0)
        self._elrendezes.setSpacing(0)

    def addWidget(self, widget):
        self._lapok.append(widget)
        self._elrendezes.addWidget(widget)
        if self._aktualis < 0:
            self.setCurrentIndex(0)
        else:
            widget.hide()
        return len(self._lapok) - 1

    def count(self):
        return len(self._lapok)

    def widget(self, index):
        return self._lapok[index] if 0 <= index < len(self._lapok) else None

    def indexOf(self, widget):
        return self._lapok.index(widget) if widget in self._lapok else -1

    def currentIndex(self):
        return self._aktualis

    def currentWidget(self):
        return self.widget(self._aktualis)

    def setCurrentIndex(self, index):
        if not 0 <= index < len(self._lapok):
            return
        for i, lap in enumerate(self._lapok):
            lap.setVisible(i == index)
        valtozott = index != self._aktualis
        self._aktualis = index
        self.updateGeometry()
        if valtozott:
            self.currentChanged.emit(index)

    def setCurrentWidget(self, widget):
        self.setCurrentIndex(self.indexOf(widget))


class Kapcsolo(QAbstractButton):
    def __init__(self):
        super().__init__()
        self.setCheckable(True)
        self.setCursor(Qt.CursorShape.PointingHandCursor)
        self.setFixedSize(QSize(44, 24))
        self.setAccessibleName("kapcsoló")

    def sizeHint(self):
        return QSize(44, 24)

    def paintEvent(self, _):
        from raveos_center import stilus

        festo = QPainter(self)
        festo.setRenderHint(QPainter.RenderHint.Antialiasing, False)
        be = self.isChecked()
        aktiv = self.isEnabled()
        palya = QColor(stilus.ZOLD if be else stilus.AKTIV)
        keret = QColor(stilus.ZOLD if be else stilus.KERET_EROS)
        if not aktiv:
            palya = QColor(stilus.KERET if not be else "#3d5a36")
            keret = palya
        festo.setPen(keret)
        festo.setBrush(palya)
        festo.drawRect(QRectF(0.5, 0.5, self.width() - 1, self.height() - 1))
        gomb_meret = self.height() - 8
        x = self.width() - gomb_meret - 4 if be else 4
        festo.setPen(Qt.PenStyle.NoPen)
        festo.setBrush(QColor(stilus.ZOLDON_SZOVEG if be else stilus.SZOVEG_HALVANY))
        festo.drawRect(QRectF(x, 4, gomb_meret, gomb_meret))
        festo.end()


class Csillagok(QWidget):
    valasztva = pyqtSignal(int)
    TERKOZ = 6
    LEPESEK = {Qt.Key.Key_Right: 1, Qt.Key.Key_Up: 1, Qt.Key.Key_Left: -1, Qt.Key.Key_Down: -1}
    SZAMOK = {Qt.Key.Key_1: 1, Qt.Key.Key_2: 2, Qt.Key.Key_3: 3, Qt.Key.Key_4: 4, Qt.Key.Key_5: 5}

    def __init__(self, meret=22, valaszthato=False):
        super().__init__()
        self.meret = meret
        self.ertek = 0.0
        self.mutatott = 0
        self.valaszthato = valaszthato
        self.setFixedSize(self.sizeHint())
        self.setAccessibleName("csillagos értékelés")
        if valaszthato:
            self.setMouseTracking(True)
            self.setCursor(Qt.CursorShape.PointingHandCursor)
            self.setFocusPolicy(Qt.FocusPolicy.StrongFocus)

    def sizeHint(self):
        return QSize(self.meret * 5 + self.TERKOZ * 4, self.meret)

    def beallit(self, ertek):
        self.ertek = max(0.0, min(5.0, float(ertek)))
        self.setToolTip(f"{self.ertek:.1f} / 5" if not self.valaszthato else "")
        self.update()

    def _index(self, pont):
        return max(1, min(5, int(pont.x() // (self.meret + self.TERKOZ)) + 1))

    def _valaszt(self, ertek):
        self.beallit(ertek)
        self.valasztva.emit(int(ertek))

    def mouseMoveEvent(self, esemeny):
        if self.valaszthato and self.isEnabled():
            self.mutatott = self._index(esemeny.position())
            self.update()

    def leaveEvent(self, esemeny):
        self.mutatott = 0
        self.update()
        super().leaveEvent(esemeny)

    def mouseReleaseEvent(self, esemeny):
        if self.valaszthato and esemeny.button() == Qt.MouseButton.LeftButton and self.rect().contains(
            esemeny.position().toPoint()
        ):
            self._valaszt(self._index(esemeny.position()))
        super().mouseReleaseEvent(esemeny)

    def keyPressEvent(self, esemeny):
        if not self.valaszthato:
            return super().keyPressEvent(esemeny)
        try:
            kulcs = Qt.Key(esemeny.key())
        except ValueError:
            kulcs = None
        if kulcs in self.LEPESEK:
            self._valaszt(max(1, min(5, int(self.ertek) + self.LEPESEK[kulcs])))
        elif kulcs in self.SZAMOK:
            self._valaszt(self.SZAMOK[kulcs])
        else:
            super().keyPressEvent(esemeny)

    def _sokszog(self, bal):
        r = self.meret / 2
        kozep = QPointF(bal + r, r * 1.05)
        pontok = []
        for i in range(10):
            sugar = r if i % 2 == 0 else r * 0.42
            szog = math.radians(-90 + i * 36)
            pontok.append(QPointF(kozep.x() + sugar * math.cos(szog), kozep.y() + sugar * math.sin(szog)))
        return QPolygonF(pontok)

    def paintEvent(self, _):
        from raveos_center import stilus

        festo = QPainter(self)
        festo.setRenderHint(QPainter.RenderHint.Antialiasing, True)
        festo.setPen(Qt.PenStyle.NoPen)
        ertek = self.mutatott or self.ertek
        tele = QColor(stilus.SARGA if self.isEnabled() else stilus.SZOVEG_HALVANY)
        for i in range(5):
            bal = i * (self.meret + self.TERKOZ)
            csillag = self._sokszog(bal)
            festo.setBrush(QColor(stilus.KERET_EROS))
            festo.drawPolygon(csillag)
            resz = max(0.0, min(1.0, ertek - i))
            if resz > 0:
                festo.save()
                festo.setClipRect(QRectF(bal, 0, self.meret * resz, self.meret))
                festo.setBrush(tele)
                festo.drawPolygon(csillag)
                festo.restore()
        if self.hasFocus():
            festo.setPen(QColor(stilus.ZOLD))
            festo.setBrush(Qt.BrushStyle.NoBrush)
            festo.drawRect(QRectF(0.5, 0.5, self.width() - 1, self.height() - 1))
        festo.end()


def nyujthato(widget):
    widget.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Preferred)
    return widget