LineDevelopers 1.1.20

• 세종대왕

LINE Developers.Net

This C# Library is implemented of the LINE Developers APIs. and This is an unofficial LINE Developers library. There are so many features in LINE Developers APIs. However couldn't test such of features which are not offer in KOREA and some of pay features. but It'll works well. I hope it's helpful to develop message send and chatbot via LINE Messenger.

• install from nuget

Install-Package LineDevelopers 

1. Getting started

• how to create / send a message
• webhook quick start

2. Library introduction

2-1. LineMessagingClient class

There are exists each class by unit of feature. for instance, it offer same features both a LineMessaingClient.Insight and a LineInsightClient class. but I recommend that you should use a LineMessagingClient class instead of each class.

• example)

  using Line.Message;
  
  using (var client = new LineMessagingClient("your access token"))
  {
      await client.Message.SendBroadcastMessageAsync(new TextMessage("hello world"));
      await client.Message.SendReplyMessageAsync("reply token", new TextMessage("hello world"));
      await client.Insight.GetNumberOfMessageDeliveriesAsync(new DateOnly(2022, 10, 31));
      await client.RichMenu.DownloadRichMenuImageAsync("test richmenu id", @"c:\temp\test.jpg");
  }
  

2-1-1. LineMessageClient class

• Message

2-1-2. LineInsightClient class

• Insight

2-1-3. LineRichMenuClient class

• Rich menu

2-1-4. LineGroupChatClient class

• GroupChat

2-1-5. LineMultiPersonChatClient class

• MultiPersonChat

2-1-6. LineUserClient class

• Users

2-1-7. LineAccountLinkClient class

• Account link

2-1-8. LineWebhookSettingClient class

• Webhook settings

2-1-9. LineBotClient class

• Bot

2-2. LineChannelAccessTokenClient class

• Channel access token

using Line;

using (var client = new LineChannelAccessTokenClient())
{
    try
    {
        var result = await client.IssueShortLivedChannelAccessTokenAsync("client id", "secret");

        await client.VerifyShortLonglivedChannelAccessTokenAsync(result.AccessToken);
    }
    catch (LineCredentialException ex)
    {
        Console.WriteLine($"error : {ex.Message}");
        Console.WriteLine($"error_description : {ex.Detail}");
    }
}

2-3 LineLiffClient class

• LIFF Server API

using Line;
using Line.Liff;

using (var client = new LineLiffClient("access token"))
{
    try
    {
        var liffs = await client.GetAllLiffAppsAsync();

        foreach (var liff in liffs)
        {
            await client.DeleteLiffAppsFromChannelAsync(liff.LiffId);
        }
    }
    catch (LineException ex)
    {
        Console.WriteLine(ex.Message);

        foreach (var detail in ex.Details ?? Enumerable.Empty<Detail>())
        {
            Console.WriteLine(detail.Message);
            Console.WriteLine(detail.Property);
        }
    }
}

2-4 LineLoginClient

• LINE Login v2.1

using Line.Login;

using (LineLoginClient client = new LineLoginClient())
{
    var issued = await client.OAuth2dot1.IssueAccessTokenAsync("code", "redirectUrl", "clientId", "secret");
    var profile = await client.GetUserProfileAsync(issued.AccessToken);
}

3. reference doc

• Messaging API reference
• How to serialize properties of derived classes with System.Text.Json
• System.Text.Json:How to specify a custom name for an enum value