# -*- coding: utf-8 -*-
"""
공통 칩 버튼 베이스
- 색상/크기/hover/checked(선택) 시각 처리
- 선택형 칩(Choice)과 필터 칩(Filter)의 공통 기반
"""

from __future__ import annotations

from dataclasses import dataclass
from typing import Optional

from PySide6.QtWidgets import QToolButton, QSizePolicy
from PySide6.QtCore import Qt, Signal, QSize

from core.logger import get_logger

logger = get_logger(__name__)

try:
    from ui.styles.style_manager import StyleManager  # type: ignore
except Exception:
    StyleManager = None  # noqa: N816


@dataclass(frozen=True)
class ChipTheme:
    height: int = 28
    padding_x: int = 10
    radius: int = 14
    font_px: int = 12
    max_width: Optional[int] = None


class ChipBaseButton(QToolButton):
    """
    공통 칩 버튼
    - key 기반 신호 제공
    - 선택형(checked) 시각 지원
    """

    clicked_key = Signal(str)
    toggled_key = Signal(str, bool)

    def __init__(
        self,
        text: str,
        key: str,
        bg: str = "#64748b",
        fg: str = "#ffffff",
        theme: ChipTheme = ChipTheme(),
        checkable: bool = False,
        parent=None,
    ):
        super().__init__(parent)

        self._style_manager = StyleManager() if StyleManager else None

        self.key = key
        self._bg = bg
        self._fg = fg
        self.theme = theme

        self.setText(text)
        self.setCursor(Qt.PointingHandCursor)
        self.setAutoRaise(True)
        self.setFocusPolicy(Qt.NoFocus)

        self.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.setFixedHeight(self.theme.height)
        self.setMinimumWidth(40)

        if self.theme.max_width:
            self.setMaximumWidth(self.theme.max_width)

        self.setProperty("chipHover", False)

        # 선택형 지원
        self.setCheckable(checkable)

        # 신호 연결
        self.clicked.connect(self._on_clicked)
        self.toggled.connect(self._on_toggled)

        self._apply_style()

    def sizeHint(self) -> QSize:
        hint = super().sizeHint()
        h = self.theme.height
        return QSize(max(hint.width() + 6, 40), h)

    def enterEvent(self, event):
        self.setProperty("chipHover", True)
        self.style().unpolish(self)
        self.style().polish(self)
        super().enterEvent(event)

    def leaveEvent(self, event):
        self.setProperty("chipHover", False)
        self.style().unpolish(self)
        self.style().polish(self)
        super().leaveEvent(event)

    def _on_clicked(self):
        self.clicked_key.emit(self.key)

    def _on_toggled(self, checked: bool):
        self.toggled_key.emit(self.key, checked)
        # checked 시각 반영을 위해 re-polish
        self.style().unpolish(self)
        self.style().polish(self)

    def set_bg(self, bg: str):
        """배경색 설정"""
        self._bg = bg
        self._apply_style()

    def set_fg(self, fg: str):
        """전경색 설정"""
        self._fg = fg
        self._apply_style()

    def _apply_style(self):
        # 폰트(StyleManager가 있으면 dialog.content 기반)
        if self._style_manager:
            try:
                f = self._style_manager.get_font("dialog", "content")
                self.setFont(f)
            except Exception:
                logger.debug("StyleManager 폰트 적용 실패. 시스템 기본 폰트 사용")

        h = self.theme.height
        r = self.theme.radius
        px = self.theme.padding_x

        self.setStyleSheet(f"""
            QToolButton {{
                background: {self._bg};
                color: {self._fg};
                border: 1px solid rgba(0,0,0,0.12);
                border-radius: {r}px;
                padding-left: {px}px;
                padding-right: {px}px;
                min-height: {h}px;
                max-height: {h}px;
                font-size: {self.theme.font_px}px;
                font-weight: 700;
            }}

            QToolButton[chipHover="true"] {{
                border: 1px solid rgba(255,255,255,0.55);
                background: qlineargradient(
                    x1:0, y1:0, x2:0, y2:1,
                    stop:0 rgba(255,255,255,0.15),
                    stop:1 rgba(255,255,255,0.00)
                ), {self._bg};
            }}

            /* 선택됨(checked) 강조 */
            QToolButton:checked {{
                border: 1px solid rgba(255,255,255,0.80);
                background: qlineargradient(
                    x1:0, y1:0, x2:0, y2:1,
                    stop:0 rgba(255,255,255,0.25),
                    stop:1 rgba(0,0,0,0.10)
                ), {self._bg};
            }}

            QToolButton:pressed {{
                background: qlineargradient(
                    x1:0, y1:0, x2:0, y2:1,
                    stop:0 rgba(0,0,0,0.18),
                    stop:1 rgba(0,0,0,0.05)
                ), {self._bg};
            }}
        """)