# panel/connection_panel.py
from PyQt5.QtWidgets import (QGroupBox, QFormLayout, QHBoxLayout,
                             QComboBox, QPushButton, QLabel, QVBoxLayout)
from PyQt5.QtCore import Qt
from core.connection_manager import SerialManager
from utils.logger import logger

class ConnectionPanel(QGroupBox):
    def __init__(self, serial_manager):
        super().__init__("设备连接管理")
        self.setTitle("🔗 设备连接")

        # 实例化核心管理器
        # self.serial_manager = SerialManager()
        self.serial_manager = serial_manager

        self.init_ui()

    def init_ui(self):
        # 主布局
        main_layout = QVBoxLayout()

        # 表单布局（用于参数行）
        form_layout = QFormLayout()

        # --- 1. 端口选择行 ---
        self.port_combo = QComboBox()
        self.refresh_btn = QPushButton("🔄 刷新")
        self.refresh_btn.setFixedWidth(80)

        port_hbox = QHBoxLayout()
        port_hbox.addWidget(self.port_combo)
        port_hbox.addWidget(self.refresh_btn)

        form_layout.addRow("串口端口:", port_hbox)

        # --- 2. 波特率选择 ---
        self.baud_combo = QComboBox()
        self.baud_combo.addItems(["9600", "19200", "38400", "115200"])
        self.baud_combo.setCurrentText("9600")
        form_layout.addRow("波特率:", self.baud_combo)

        # --- 3. 连接状态行 ---
        self.status_label = QLabel("●")
        self.status_label.setStyleSheet("color: red; font-size: 20px;")
        self.status_text = QLabel("离线")

        status_hbox = QHBoxLayout()
        status_hbox.addWidget(self.status_label)
        status_hbox.addWidget(self.status_text)
        form_layout.addRow("连接状态:", status_hbox)

        # 将表单加入主布局
        main_layout.addLayout(form_layout)

        # --- 4. 连接按钮 ---
        self.connect_btn = QPushButton("✅ 连接设备")
        self.connect_btn.setStyleSheet("font-weight: bold; padding: 5px;")
        main_layout.addWidget(self.connect_btn, alignment=Qt.AlignCenter)

        self.setLayout(main_layout)

        # --- 信号连接 ---
        self.refresh_btn.clicked.connect(self.refresh_ports)
        self.connect_btn.clicked.connect(self.toggle_connection)

        # 初始化时自动扫描一次
        self.refresh_ports()

    def refresh_ports(self):
        """
        刷新下拉框中的端口列表
        """
        self.port_combo.clear()
        ports = self.serial_manager.get_available_ports()

        if ports:
            self.port_combo.addItems(ports)
            logger.debug(f"🔍 扫描到串口: {ports}")
        else:
            self.port_combo.addItem("未检测到设备")
            logger.warning("⚠️ 未扫描到任何串口设备")

    def toggle_connection(self):
        """
        切换连接/断开状态
        """
        # ... 连接成功后 ...
        print(f"连接面板中的 serial_manager 对象: {id(self.serial_manager)}")
        print(f"连接面板中的 is_connected 状态: {self.serial_manager.is_connected}")

        if self.serial_manager.is_connected:
            self.serial_manager.disconnect()
            self.update_ui_state(False)
        else:
            port = self.port_combo.currentText()
            baudrate = int(self.baud_combo.currentText())

            if port == "未检测到设备":
                logger.error("❌ 无法连接：请插入设备并点击刷新")
                return

            # 尝试连接
            success = self.serial_manager.connect(port=port, baudrate=baudrate)
            if success:
                self.update_ui_state(True)
            # 失败信息由 SerialManager 内部记录

    def update_ui_state(self, connected):
        """
        根据连接状态更新按钮和文字
        """
        if connected:
            self.status_label.setStyleSheet("color: green;")
            self.status_text.setText("在线")
            self.connect_btn.setText("🛑 断开连接")
            self.connect_btn.setStyleSheet("font-weight: bold; background-color: #d3f3d3; padding: 5px;")
        else:
            self.status_label.setStyleSheet("color: red;")
            self.status_text.setText("离线")
            self.connect_btn.setText("✅ 连接设备")
            self.connect_btn.setStyleSheet("font-weight: bold; padding: 5px;")