"""
Dialog di selezione funzionalità wizard per Aggancio Multiplo.

Flusso:
1. WizardOptInDialog  — "Vuoi usare il wizard?" (solo se pref=None)
2. FunzionalitaDialog — "Cosa vuoi fare?"
"""
from PyQt6.QtWidgets import (
    QDialog, QVBoxLayout, QHBoxLayout, QLabel, QPushButton,
    QCheckBox, QFrame,
)
from PyQt6.QtCore import Qt
from PyQt6.QtGui import QFont


# ------------------------------------------------------------------ #
#  Dialog 1 — opt-in wizard                                           #
# ------------------------------------------------------------------ #

class WizardOptInDialog(QDialog):
    """Chiede se l'utente vuole usare il wizard guidato."""

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("Aggancio Multiplo")
        self.setFixedWidth(380)
        self.setWindowFlags(self.windowFlags() &
                            ~Qt.WindowType.WindowContextHelpButtonHint)
        self._use = False
        self._remember = False
        self._build_ui()

    def _build_ui(self):
        layout = QVBoxLayout(self)
        layout.setSpacing(16)
        layout.setContentsMargins(24, 20, 24, 20)

        title = QLabel('Vuoi usare il wizard guidato?')
        title.setFont(QFont('Segoe UI', 11, QFont.Weight.Bold))
        title.setAlignment(Qt.AlignmentFlag.AlignCenter)
        layout.addWidget(title)

        desc = QLabel('Il wizard ti guida passo dopo passo nelle operazioni '
                      'disponibili in Aggancio Multiplo.')
        desc.setWordWrap(True)
        desc.setStyleSheet('color: #555;')
        desc.setAlignment(Qt.AlignmentFlag.AlignCenter)
        layout.addWidget(desc)

        self._chk_remember = QCheckBox('Non chiedere più')
        self._chk_remember.setStyleSheet('color: #777; font-size: 11px;')
        layout.addWidget(self._chk_remember, alignment=Qt.AlignmentFlag.AlignCenter)

        # Buttons
        btn_layout = QHBoxLayout()
        btn_layout.setSpacing(10)

        btn_no = QPushButton('No, procedi direttamente')
        btn_no.setStyleSheet(_BTN_SECONDARY)
        btn_no.clicked.connect(self._on_no)

        btn_si = QPushButton('Sì, usa il wizard')
        btn_si.setStyleSheet(_BTN_PRIMARY)
        btn_si.setDefault(True)
        btn_si.clicked.connect(self._on_si)

        btn_layout.addWidget(btn_no)
        btn_layout.addWidget(btn_si)
        layout.addLayout(btn_layout)

    def _on_si(self):
        self._use = True
        self._remember = self._chk_remember.isChecked()
        self.accept()

    def _on_no(self):
        self._use = False
        self._remember = self._chk_remember.isChecked()
        self.accept()

    def use_wizard(self) -> bool:
        return self._use

    def remember(self) -> bool:
        return self._remember


# ------------------------------------------------------------------ #
#  Dialog 2 — selezione funzionalità                                  #
# ------------------------------------------------------------------ #

_FUNZIONALITA = [
    ('aggancio_titoli',
     'Aggancio titoli',
     'Importa un listino fornitore e abbina i titoli al catalogo Mediaset',
     True),
    ('valutazioni_reti',
     'Valutazioni reti',
     'Importa le valutazioni restituite dalle reti sui prodotti',
     True),
]


class FunzionalitaDialog(QDialog):
    """Chiede all'utente quale funzionalità di Aggancio Multiplo usare."""

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle('Cosa vuoi fare?')
        self.setFixedWidth(440)
        self.setWindowFlags(self.windowFlags() &
                            ~Qt.WindowType.WindowContextHelpButtonHint)
        self._selected: str | None = None
        self._build_ui()

    def _build_ui(self):
        layout = QVBoxLayout(self)
        layout.setSpacing(10)
        layout.setContentsMargins(24, 20, 24, 20)

        title = QLabel('Cosa vuoi fare?')
        title.setFont(QFont('Segoe UI', 12, QFont.Weight.Bold))
        layout.addWidget(title)

        sub = QLabel('Seleziona la funzionalità da avviare.')
        sub.setStyleSheet('color: #666; margin-bottom: 4px;')
        layout.addWidget(sub)

        for func_id, label, desc, enabled in _FUNZIONALITA:
            card = self._make_card(func_id, label, desc, enabled)
            layout.addWidget(card)

        layout.addSpacing(4)
        btn_layout = QHBoxLayout()
        btn_layout.addStretch()
        btn_cancel = QPushButton('Annulla')
        btn_cancel.setStyleSheet(_BTN_SECONDARY)
        btn_cancel.clicked.connect(self.reject)
        btn_layout.addWidget(btn_cancel)
        layout.addLayout(btn_layout)

    def _make_card(self, func_id, label, desc, enabled):
        card = QFrame()
        card.setObjectName('card')
        if enabled:
            card.setCursor(Qt.CursorShape.PointingHandCursor)
            base_style = ('QFrame#card { border: 1px solid #D0D0D0; border-radius: 8px; '
                          'background: #FAFAFA; } '
                          'QFrame#card:hover { border: 1px solid #5C6BC0; background: #F0F0FF; }')
        else:
            base_style = ('QFrame#card { border: 1px solid #E0E0E0; border-radius: 8px; '
                          'background: #F5F5F5; }')
        card.setStyleSheet(base_style)

        row = QHBoxLayout(card)
        row.setContentsMargins(14, 12, 14, 12)
        row.setSpacing(12)

        text_col = QVBoxLayout()
        text_col.setSpacing(2)

        lbl = QLabel(label)
        lbl.setFont(QFont('Segoe UI', 10, QFont.Weight.Bold
                          if enabled else QFont.Weight.Normal))
        if not enabled:
            lbl.setStyleSheet('color: #AAA;')
        text_col.addWidget(lbl)

        desc_lbl = QLabel(desc)
        desc_lbl.setStyleSheet('color: #888; font-size: 11px;')
        desc_lbl.setWordWrap(True)
        text_col.addWidget(desc_lbl)

        if not enabled:
            soon = QLabel('Prossimamente')
            soon.setStyleSheet(
                'color: #999; font-size: 10px; font-style: italic;')
            text_col.addWidget(soon)

        row.addLayout(text_col, 1)

        if enabled:
            arrow = QLabel('›')
            arrow.setFont(QFont('Segoe UI', 16))
            arrow.setStyleSheet('color: #5C6BC0;')
            row.addWidget(arrow)

            # Click handler via mousePressEvent override
            _id = func_id
            _dlg = self

            def _press(_, bound_id=_id):
                _dlg._selected = bound_id
                _dlg.accept()

            card.mousePressEvent = _press

        return card

    def get_selected(self) -> str | None:
        return self._selected


# ------------------------------------------------------------------ #
#  Helpers stile                                                       #
# ------------------------------------------------------------------ #

_BTN_PRIMARY = """
    QPushButton {
        background: #5C6BC0; color: white; border: none;
        border-radius: 6px; padding: 8px 18px; font-size: 13px;
    }
    QPushButton:hover { background: #3F51B5; }
"""

_BTN_SECONDARY = """
    QPushButton {
        background: #F0F0F0; color: #333; border: 1px solid #CCC;
        border-radius: 6px; padding: 8px 18px; font-size: 13px;
    }
    QPushButton:hover { background: #E0E0E0; }
"""