hulk10425 / line-bot-sdk-swift

A SDK of the LINE Messaging API for Swift

LINEBotAPI

Overview

This library is Unofficial

LINEBotAPI is a SDK of the LINE Messaging API for Swift.

• Swift 3 support
• Using Zewo
• Linux Ready

Features

• Send text/image/video/audio/location/sticker message
• Handle follow/unfollow/join/leave/postback/Beacon events
• Send imagemap/template message

A Work In progress

LINEBotAPI is currently in development.

Attention

Currently LINEBotAPI works with 3.0.

Getting started

Installation

Before we start, we need to install some tools and dependencies.

Swift

Install Swift using swiftenv or use docker images(docker-swift).

swiftenv

swiftenv allows you to easily install multiple versions of swift.

% git clone https://github.com/kylef/swiftenv.git ~/.swiftenv

and add settings for your shell(For more information, please see swiftenv's wiki.

Then install Swift 3.0. This process does not need on Mac OS X installed Xcode 8, only Linux.

% swiftenv install 3.0

Install other libraries.

• On OS X

  % brew install openssl curl
  % brew link --force openssl
  

• On Linux

  % sudo apt-get update
  % sudo apt-get install libcurl4-openssl-dev
  

Create project

We got prepared for a creating project.

Let's create your LINE Bot!

Make project directory.

% mkdir linebot && cd linebot

Set Swift version to 3.0 if you need.

% swiftenv local 3.0

Initialize project directory with Swift Package Manager(SPM).

% swift package init --type executable

Then this command will create the basic structure for executable command.

.
├── Package.swift
├── Sources
│   └── main.swift
└── Tests

Package.swift

Open Package.swift and make it looks like this:

import PackageDescription

let package = Package(
    name: "linebot",
    dependencies: [
        .Package(url: "https://github.com/yoshik/LINEBotAPI.git", majorVersion: 1, minor: 0),
    ]
)

main.swift

Next, write main program in main.swift.

import LINEBotAPI

let bot = LINEBotAPI(accessToken: "YOUR_ACCESS_TOKEN")
try bot.sendText(to: "USER_ID", text: "Hello! Hello!")

This code:

• get target userId(A user id on LINE)
• send text to userId specified.

Build project

Change lib and include paths to your environment.

% swift build

Run it

After it compiles, run it.

Your must specify USER_IDto yours.USER_ID` is your user id.

% .build/debug/linebot

You will get a message from bot on LINE if you had setup setting on bot management page.

Start Server

LINEBotAPI supports server mode using Zewo.

main.swift

Open main.swift and make it look like this:

import LINEBotAPI
import HTTPServer

let bot = LINEBotAPI(
    accessToken: "YOUR_ACCESS_TOKEN",
    channelSecret: "YOUR_CHANNEL_SECRET"
)
let log = LogMiddleware(debug: true)

// Initializer a router.
let router = BasicRouter { (routes) in
    // Waiting for POST request on /callback.
    routes.post("/callback") { (request) in
        // Parsing request and validate signature
        return try bot.parseRequest(request) { (event) in
            if let textMessage = event as? TextMessage, let text = textMessage.text {
                let builder = MessageBuilder()
                builder.addText(text: text)
                if let messages = try builder.build(), let replyToken = textMessage.replyToken {
                    try bot.replyMessage(replyToken: replyToken, messages: messages)
                }
            }
        }
    }
}

// start server
let server = try Server(port: 8080, middleware: [log], responder: router)
try server.start()

This is echo bot.

Build and Run it

Then build and run it.

% swift build
% .build/debug/linebot

The server will be started on port 8080.

This server will be waiting a POST request from Bot Server at /callback.

Other examples

TODO

Tips

Can I develop on Xcode?

Yes, sure. You can generate a xcode project file with following command.

% swift package generate-xcodeproj

Can I use https server?

Maybe. We are developing it using reverse proxy, but you must be able to support https because Zewo has HTTPSServer.

License

LINEBotAPI is released under the MIT license. See LICENSE for details.