"""设备连接（UCD323 / CA410）相关逻辑（Step 4 重构）。

从 pqAutomationApp.PQAutomationApp 中搬迁。每个函数第一行 `self = app`
以保留原有 `self.xxx` 属性访问不变。
"""

import threading
import time
from tkinter import messagebox

from drivers.caSerail import CASerail

def get_available_ucd_ports(self):
    """获取可用的UCD端口列表"""
    return self.ucd.search_device()


def get_available_com_ports(self):
    """获取可用的COM端口列表"""
    try:
        import serial.tools.list_ports

        ports = serial.tools.list_ports.comports()
        return [port.device for port in ports]
    except Exception as e:
        self.log_gui.log(f"获取COM端口列表出错: {e}")
        return []


def refresh_com_ports(self):
    """刷新COM端口列表"""
    available_ports = self.get_available_com_ports()
    available_list = self.get_available_ucd_ports()

    # 更新UCD列表的下拉框选项
    ucd_list_current = self.ucd_list_var.get()
    if ucd_list_current not in available_list:
        self.ucd_list_var.set(available_list[0] if available_list else "")
    self.ucd_list_combo.config(values=available_list)

    # 更新CA端口的下拉框选项
    ca_com_current = self.ca_com_var.get()
    if ca_com_current not in available_ports:
        self.ca_com_var.set(
            available_ports[1]
            if len(available_ports) > 1
            else (available_ports[0] if available_ports else "")
        )
    self.ca_com_combo.config(values=available_ports)

    # 重置连接状态指示器为灰色
    if hasattr(self, "ucd_status_indicator"):
        self.ucd_status_indicator.config(bg="gray")
    if hasattr(self, "ca_status_indicator"):
        self.ca_status_indicator.config(bg="gray")

    self.update_config()


def check_com_connections(self):
    """检测COM端口连接状态"""
    # 禁用连接按钮，防止重复点击
    self.check_button.configure(state="disabled")
    self.refresh_button.configure(state="disabled")

    # 更新状态栏
    self.status_var.set("正在检测连接...")
    self.root.update()

    # 使用线程进行连接检测
    def check_connections():
        try:
            # 检测TV连接
            ucd_connected = self.check_port_connection(is_ucd=True)
            self._dispatch_ui(
                self.update_connection_indicator,
                self.ucd_status_indicator, ucd_connected,
            )

            # 检测CA连接
            ca_connected = self.check_port_connection(is_ucd=False)
            self._dispatch_ui(
                self.update_connection_indicator,
                self.ca_status_indicator, ca_connected,
            )

            # 更新状态栏
            self._dispatch_ui(self.status_var.set, "连接检测完成")

            # 重新启用所有控件
            self._dispatch_ui(self.enable_com_widgets)
        except Exception as e:
            self._dispatch_ui(self.log_gui.log, f"连接检测出错: {e}")
            self._dispatch_ui(self.enable_com_widgets)

    # 启动线程
    threading.Thread(target=check_connections, daemon=True).start()


def update_connection_indicator(self, indicator, connected):
    """更新连接状态指示器颜色"""
    if connected:
        indicator.config(bg="green")
    else:
        indicator.config(bg="red")


def check_port_connection(self, is_ucd=True):
    """检测指定端口是否可以连接"""
    try:
        if is_ucd:
            if self.ucd.status:
                try:
                    self.ucd.close()
                except:
                    pass
            if not self.ucd.open(self.ucd_list_var.get()):
                self.log_gui.log(
                    f"设备 {self.ucd_list_var.get()} 异常，UCD323连接失败"
                )
                return False
            else:
                return True
        else:
            # 如果CA对象已存在，先关闭
            if self.ca is not None:
                try:
                    self.ca.close()
                except:
                    pass
            channel_value = self.ca_channel_var.get()
            str_channel = f"{int(channel_value):02d}"
            self.ca = CASerail()
            self.ca.open(self.config.device_config["ca_com"], 19200, 7, "E", 2)
            # data = self.ca.set_xyLv_Display()
            data = self.ca.set_all_Display()
            if data:
                data = self.ca.setSynchMode(3)
                data = self.ca.setMeasureSpeed(1)
                if True:
                    time.sleep(0.5)
                    data = self.ca.setZeroCalibration()
                channel_value = self.ca_channel_var.get()
                str_channel = f"{int(channel_value):02d}"
                data = self.ca.setChannel(str_channel)
                return True
            else:
                self.log_gui.log(
                    f"端口 {self.config.device_config["ca_com"]} 异常，色温仪连接失败"
                )
                self.ca.close()
                self.ca = None
                return False
    except Exception as e:
        self.log_gui.log(f"端口连接失败: {e}")
        return False


def enable_com_widgets(self):
    """重新启用所有控件"""
    self.check_button.configure(state="normal")
    self.refresh_button.configure(state="normal")


def disconnect_com_connections(self):
    """断开所有串口连接"""
    try:
        # 断开TV连接
        if self.ucd.status:
            try:
                self.ucd.close()
            except:
                pass
            finally:
                self.ucd.status = False
                self.log_gui.log("UCD连接已断开")

        # 断开CA连接
        if self.ca is not None:
            try:
                self.ca.close()
            except:
                pass
            finally:
                self.ca = None
                self.log_gui.log("CA连接已断开")

        # 重新启用相关控件
        self.enable_com_widgets()
        self.ucd_status_indicator.config(bg="gray")
        self.ca_status_indicator.config(bg="gray")
        self.status_var.set("串口连接已断开")

    except Exception as e:
        self.log_gui.log(f"断开连接时发生错误: {str(e)}")
        messagebox.showerror("错误", f"断开连接失败: {str(e)}")