SunlightAggregationTerminal/View/LogPage.xaml.cs

using CommunityToolkit.Mvvm.Messaging;
using SunlightAggregationTerminal.Class;
using SunlightAggregationTerminal.Models;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Data;
using static System.Net.Mime.MediaTypeNames;

namespace SunlightAggregationTerminal.View;

public class ItemOption
{
    public required string SERVER { get; set; }
    public required string SERVERIP { get; set; }
}

public partial class LogPage : ContentPage
{
    public ObservableCollection<ItemOption>? Items { get; set; } 

    public LogPage()
	{
		InitializeComponent();

        WeakReferenceMessenger.Default.Register<string>(this, (r, scannedValue) =>
        {
            SERVERIP.Text = scannedValue;
        });

        //可用服务器列表
        AppModels.sqliteHelper.Open();
        var userdata = AppModels.sqliteHelper.ExecuteDataSet("SELECT * FROM Server", null);
        AppModels.sqliteHelper.Close();

        Items = new ObservableCollection<ItemOption>();

        if (userdata != null)
        {
            foreach (DataRow dataRow in userdata.Tables[0].Rows)
            {
                if (dataRow != null)
                {
                    string _SERVER = dataRow.Field<string>("Server")!;
                    string _SERVERIP = dataRow.Field<string>("ServerID")! + "," + dataRow.Field<string>("ServerHTTP")!;

                    var dat = new ItemOption
                    {
                        SERVER = _SERVER,
                        SERVERIP = _SERVERIP
                    };
                    Items.Add(dat);
                }
            }
        }
        // 设置默认选中项
        if (Items.Count>0)
        {
            SERVER.ItemsSource = Items;
            SERVER.SelectedItem = Items[0];
        }
    }

    private void SERVER_SelectedIndexChanged(object sender, EventArgs e)//服务器列表选择
    {
        var dat = SERVER.SelectedItem as ItemOption;
        if (dat != null)
        {
            SERVERIP.Text = dat.SERVERIP?.ToString();
        } 
    }

    private void OnScanButtonClicked(object sender, EventArgs e)//扫码按钮
    {
        // 跳转到扫码页面
        var scanPage = new ScanPage(3);
        Navigation.PushModalAsync(scanPage);
    }

    private async void Log_Clicked(object sender, EventArgs e)//登录
    {
        LoadingIndicator.IsVisible = true;

        string[] result = SERVERIP.Text.Split(',', 2, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);

        App.GlobalData.ServerID = result[0]?? "";
        //判断是否有http连接信息
        if (result.Length ==2)
        {
            App.GlobalData.ServerHTTP = result[1] ?? "";
            App.GlobalData.LocalAreaNetworkMode = false;
        }
        else
        {
            App.GlobalData.LocalAreaNetworkMode = true;
        }
        App.GlobalData.User = UsernameEntry.Text;    
        App.GlobalData.UserPassword = PasswordEntry.Text;

        if (await AppModels.LogIn())
        {
            int temp_name = AppModels.Select("SELECT * FROM Users WHERE User='" + UsernameEntry.Text + "' LIMIT 1;")!.Tables[0].Rows.Count;
            if (temp_name >0)
            {
                //存在更新账号状态
                string sql = "UPDATE Users SET ServerID = '" + App.GlobalData.ServerID                     
                    + "', ServerHTTP = '" + App.GlobalData.ServerHTTP
                    + "', UserPassword = '" + PasswordEntry.Text
                    +"', LogNo = 1 WHERE User='" + UsernameEntry.Text + "';";
                AppModels.Updata(sql);
            }
            else
            {
                //插入账号
                string sql = @"INSERT INTO Users (User,UserId ,UserName ,UserPassword ,
                        Enterprise ,Department ,ServerID ,ServerHTTP ,Groups ,
                        ProxyID ,LogNo ,LocalAreaNetworkMode ,DarkMode ,
                        MessageNotificationMode ,GUID            
                        )VALUES('" + UsernameEntry.Text + "','"+ App.GlobalData.UserId + 
                        "','" + App.GlobalData.UserName + "','" + PasswordEntry.Text +                        
                        "','"+ App.GlobalData.Enterprise + "','"+ App.GlobalData.Department + 
                        "','" + App.GlobalData.ServerID + "','" +App.GlobalData.ServerHTTP+ 
                        "','"+ App.GlobalData.Groups + "'," +
                          " '',1,0,0,0,'" + Models.AppModels.GetAppUniqueId() + "');";
                AppModels.INSERT(sql);
            }

            int temp_server = AppModels.Select("SELECT * FROM Server WHERE Server='"+ App.GlobalData.Enterprise + "' LIMIT 1;")!.Tables[0].Rows.Count;
            if (temp_server == 0)
            {
                string sql = @"INSERT INTO Server ( Server, ServerID,ServerHTTP)VALUES('" + App.GlobalData.Enterprise + "','" +
                      App.GlobalData.ServerID+"','"+ App.GlobalData.ServerHTTP + "');";
                AppModels.INSERT(sql);
            }

            await Navigation.PopModalAsync();
        }
        else 
        {
            await DisplayAlertAsync("未登录", "服务器不存在或拒绝访问", "是");
        }
        LoadingIndicator.IsVisible = false;
    }    
}