import sqlite3
import json
import tkinter as tk
import tkinter.messagebox as msgbox
import datetime

# 获得sq_record中的序号sq，根据序号数量确定页码
with open("sq_record.json", "r") as file:
    sequence = json.load(file)

window = tk.Tk()
window.resizable(1, 0)
window.title("查询结果")
# 窗口居中偏右
ww, wh = 800, 400
sw, sh = window.winfo_screenwidth(), window.winfo_screenheight()
x, y = (sw - ww) / 2, (sh - wh) / 2
window.geometry("%dx%d+%d+%d" % (ww, wh, x, y))

# 搭建存储文本框的frame
f1 = tk.Frame(window, width=ww - 20, height=wh - 70, bg="lightpink")
f1.pack(padx=10, pady=10)
# 创建多行文本框
t1 = tk.Text(f1, width=ww - 40, height=21)
t1.pack(side="top", padx=10, pady=10)

lb = tk.Label(window, text="请输入想要出场的车牌号:")
lb.pack(side="left", padx=10, pady=10, anchor="sw")
var_num = tk.StringVar()
e1 = tk.Entry(window, textvariable=var_num)
e1.pack(side="left", padx=10, pady=10, anchor="sw")


def showing():
    """显示所有indexs中的成员信息"""
    t1.delete(1.0, tk.END)
    t1.insert(1.0, "车牌号\t\t姓名\t\t颜色\t\t住址\t\t电话\t\t停车时长\n")
    con = sqlite3.connect("car_info.db")
    cur = con.cursor()
    for i in sequence:
        cur.execute("select * from car where id=?", (i,))
        res = cur.fetchone()
        try:
            # 显示停车时长
            stay_hours_str = res[5]  # 获取 stay_hours 作为字符串
            if stay_hours_str == 0:
                stay_hours = "未停车"
            else:
                # 将 stay_hours 字符串解析为 datetime 对象
                entry_time = datetime.datetime.strptime(stay_hours_str, "%Y-%m-%d %H:%M:%S")
                
                # 计算入场时间和当前时间的时间差
                current_time = datetime.datetime.now()
                stay_hours = (current_time - entry_time).total_seconds() / 3600

                # 格式化 stay_hours 以便显示
                stay_hours = f"{stay_hours:.2f} 小时"

                t1.insert("end", "{}\t\t{}\t\t{}\t\t{}\t\t{}\t\t{}\n"
                        .format(res[0], res[1], res[2], res[3], res[4], stay_hours))
        except TypeError:
            pass
    # 关闭数据库
    cur.close()
    con.close()

#计算停车时长
def delete(temp):
    con = sqlite3.connect("car_info.db")
    cur = con.cursor()
    
    # 获取当前时间
    current_time = datetime.datetime.now()
    
    # 获取数据库中的入场时间
    cur.execute("SELECT stay_hours FROM car WHERE id = ?", (temp,))
    entry_time_str = cur.fetchone()[0]
    
    # 如果 stay_hours 字段为空，则使用当前时间作为入场时间
    if entry_time_str == 0:
        entry_time_str = current_time.strftime("%Y-%m-%d %H:%M:%S")
    
    # 解析时间字符串
    entry_time = datetime.datetime.strptime(entry_time_str, "%Y-%m-%d %H:%M:%S")
    
    # 计算停车时长
    stay_hours = (current_time - entry_time).total_seconds() / 3600
    
    # 更新 stay_hours 字段
    cur.execute("UPDATE car SET stay_hours = ? WHERE id = ?", (stay_hours, temp))
    con.commit()
    
    # 删除车辆信息
    cur.execute("delete from car where id=?", (str(temp),))
    
    cur.execute("select id from car")
    with open("sq_record.json", "w+") as fp:
        indexList = cur.fetchall()
        dumpList = [i[0] for i in indexList]
        json.dump(dumpList, fp)

    con.commit()
    cur.close()
    con.close()
    # 返回 stay_hours
    return stay_hours

#车辆出场，计算停车费
def del_member():
    temp = var_num.get()
    # 检测输入框
    if temp == "":
        msgbox.showerror(message="输入框为空")
    elif temp in sequence:
        stay_hours = delete(temp)  # 获取 stay_hours
        
        # 计算停车费
        parking_fee = stay_hours * 5  # 假设每小时收费 5 元
        
        # 输出停车费
        msgbox.showinfo("停车费", f"停车时长: {stay_hours:.2f} 小时\n停车费: {parking_fee:.1f} 元")
        
        msgbox.showinfo(message="车辆出场成功!")
        showing()
    else:
        msgbox.showerror(title="error", message="删除失败，请检查输入的Id")


btn_exit = tk.Button(window, text="退出", command=window.destroy)
btn_del = tk.Button(window, text="车辆出场", command=del_member)
# 放置
btn_exit.pack(side="right", padx=10, pady=10, anchor="se")
btn_del.pack(side="right", pady=10, anchor="se")

showing()

window.mainloop()