"""Fila de la lista: icono, nombre, descripción y botones Download/Run."""

from __future__ import annotations

from pathlib import Path

from PySide6.QtCore import Qt, Signal
from PySide6.QtGui import QPixmap
from PySide6.QtWidgets import (
    QFrame,
    QHBoxLayout,
    QLabel,
    QPushButton,
    QSizePolicy,
    QVBoxLayout,
)

from ..config import Game
from ..metadata import GameMeta, icon_path, load_meta
from ..paths import repo_dir

ICON_SIZE = 64


class GameRow(QFrame):
    """Widget de una fila. Emite señales cuando se pulsan los botones."""

    download_requested = Signal(object)  # Game
    run_requested = Signal(object)       # Game

    def __init__(self, game: Game, root: Path, parent=None) -> None:
        super().__init__(parent)
        self.game = game
        self.root = root
        self.setObjectName("gameRow")
        self.setFrameShape(QFrame.StyledPanel)

        layout = QHBoxLayout(self)
        layout.setContentsMargins(10, 8, 10, 8)
        layout.setSpacing(12)

        # --- Icono ---
        self.icon_label = QLabel()
        self.icon_label.setFixedSize(ICON_SIZE, ICON_SIZE)
        self.icon_label.setAlignment(Qt.AlignCenter)
        layout.addWidget(self.icon_label)

        # --- Texto (nombre + descripción + estado) ---
        text_box = QVBoxLayout()
        text_box.setSpacing(2)
        self.name_label = QLabel(game.name)
        self.name_label.setStyleSheet("font-weight: bold; font-size: 14px;")
        self.desc_label = QLabel("")
        self.desc_label.setWordWrap(True)
        self.desc_label.setStyleSheet("color: #aaaaaa;")
        self.status_label = QLabel("")
        self.status_label.setStyleSheet("color: #6fae6f; font-size: 11px;")
        text_box.addWidget(self.name_label)
        text_box.addWidget(self.desc_label)
        text_box.addWidget(self.status_label)
        text_box.addStretch(1)
        layout.addLayout(text_box, stretch=1)

        # --- Botones ---
        self.download_btn = QPushButton("Download")
        self.run_btn = QPushButton("Run")
        for btn in (self.download_btn, self.run_btn):
            btn.setMinimumWidth(96)
            btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.download_btn.clicked.connect(lambda: self.download_requested.emit(self.game))
        self.run_btn.clicked.connect(lambda: self.run_requested.emit(self.game))
        btn_box = QVBoxLayout()
        btn_box.addWidget(self.download_btn)
        btn_box.addWidget(self.run_btn)
        layout.addLayout(btn_box)

        self.refresh()

    # ----------------------------------------------------------------- estado

    def refresh(self) -> None:
        """Recarga icono, descripción y estado desde la cache local."""
        meta = load_meta(self.root, self.game.id)
        self._set_icon()
        self.desc_label.setText(meta.description or "(sin descripción todavía)")
        self._set_status(meta)

    def _set_icon(self) -> None:
        path = icon_path(self.root, self.game.id)
        pixmap = QPixmap(str(path)) if path.exists() else QPixmap()
        if pixmap.isNull():
            self.icon_label.setText("🎮")
            self.icon_label.setStyleSheet("font-size: 32px;")
        else:
            self.icon_label.setStyleSheet("")
            self.icon_label.setPixmap(
                pixmap.scaled(
                    ICON_SIZE,
                    ICON_SIZE,
                    Qt.KeepAspectRatio,
                    Qt.SmoothTransformation,
                )
            )

    def _set_status(self, meta: GameMeta) -> None:
        installed = (repo_dir(self.root, self.game.id) / ".git").exists()
        if not installed:
            self.status_label.setText("No instalado")
            self.status_label.setStyleSheet("color: #cc8855; font-size: 11px;")
            self.run_btn.setEnabled(True)  # se permite, avisará si no está
        else:
            ver = f" {meta.version}" if meta.version else ""
            self.status_label.setText(f"Instalado{ver}")
            self.status_label.setStyleSheet("color: #6fae6f; font-size: 11px;")

    # --------------------------------------------------------------- busy UI

    def set_busy(self, busy: bool, message: str = "") -> None:
        self.download_btn.setEnabled(not busy)
        self.run_btn.setEnabled(not busy)
        if busy and message:
            self.status_label.setText(message)
            self.status_label.setStyleSheet("color: #d0d060; font-size: 11px;")