Develop LINE Bot in Swift

Develop LINE Bot in Swift by Yu-Che Cheng @ iPlayground 2020

https://iplayground.io/2020/
https://www.youtube.com/watch?v=5aDV5Vb10Ko

Transcript

1. Develop LINE Bot in Swift
2. 鄭宇哲 myVideo Instagram Blogger (8000 followers)
9. • Swift
10. Architecture LINE Platform send event POST request POST request reply message bot server
11. Creating a channel • Log in to the LINE Developers Console • Register as a developer • Create a new provider • Create a channel
12. Creating a channel • Log in to the LINE Developers Console • Register as a developer • Create a new provider • Create a channel
13. Creating a channel • Log in to the LINE Developers Console • Register as a developer • Create a new provider • Create a channel
14. • Log in to the LINE Developers Console • Register as a developer • Create a new provider • Create a channel Creating a channel
15. • Set a Webhook URL to receive webhook payloads • Issue a Channel secret to verify the signature in the request • Issue a Channel access token to make API calls Setting up the bot
16. Webhook Webhook send event POST request (webhook payloads) POST request reply message bot server LINE Platform
17. • Set a Webhook URL to receive webhook payloads • Issue a Channel secret to verify the signature in the request • Issue a Channel access token to make API calls Setting up the bot
18. Signature Validation send event POST request POST request reply message bot server LINE Platform Hello! Hello! BE459576 785039E8 Channel secret
19. • Set a Webhook URL to receive webhook payloads • Issue a Channel secret to verify the signature in the request • Issue a Channel access token to make API calls Setting up the bot
20. Access Token send event POST request POST request reply message bot server LINE Platform
21. Develop bot server POST request POST request bot server LINE Platform
22. Server-side Swift Frameworks Vapor Kitura Perfect Zewo Smoke 2016 ~ 2020 2016 ~ 2019 2016 ~ 2020 2016 ~ 2018 2018 ~ 2020 19.6k 7.4k 13.8k 1.8k 1.2k
23. Vapor 4.0 • Swift 5.2 or greater • Xcode 11.4 or greater • Vapor Toolbox brew install vapor
24. vapor new lineBot New Project
25. Swift Package Manager
26. main.swift
27. configure.swift
28. routes.swift
29. Build & Run http://localhost:8080/ http://localhost:8080/hello
30. Vapor.Request
36. { "destination": "xxxxxxxxxx", "events": [ { "replyToken": “0f3779fba3b349968c5d07db31eab56f", "type": "message", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." }, "message": { "id": "325708", "type": "text", "text": "Hello, world" } }, { "replyToken": "8cf9239d56244f4197887e939187e19e", "type": "follow", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." } } ] }
37. { "destination": "xxxxxxxxxx", "events": [ { "replyToken": “0f3779fba3b349968c5d07db31eab56f", "type": "message", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." }, "message": { "id": "325708", "type": "text", "text": "Hello, world" } }, { "replyToken": "8cf9239d56244f4197887e939187e19e", "type": "follow", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." } } ] }
38. { "destination": "xxxxxxxxxx", "events": [ { "replyToken": “0f3779fba3b349968c5d07db31eab56f", "type": "message", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." }, "message": { "id": "325708", "type": "text", "text": "Hello, world" } }, { "replyToken": "8cf9239d56244f4197887e939187e19e", "type": "follow", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." } } ] }
39. { "destination": "xxxxxxxxxx", "events": [ { "replyToken": “0f3779fba3b349968c5d07db31eab56f", "type": "message", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." }, "message": { "id": "325708", "type": "text", "text": "Hello, world" } }, { "replyToken": "8cf9239d56244f4197887e939187e19e", "type": "follow", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." } } ] }
40. { "destination": "xxxxxxxxxx", "events": [ { "replyToken": “0f3779fba3b349968c5d07db31eab56f", "type": "message", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." }, "message": { "id": "325708", "type": "text", "text": "Hello, world" } }, { "replyToken": "8cf9239d56244f4197887e939187e19e", "type": "follow", "mode": "active", "timestamp": 1462629479859, "source": { "type": "user", "userId": "U4af4980629..." } } ] }
42. curl -v -X POST https://api.line.me/v2/bot/message/reply \ -H 'Content-Type: application/json' \ -H 'Authorization: Bearer {channel access token}' \ -d '{ "replyToken":"nHuyWiB7yP5Zw52FIkcQobQuGDXCTA", "messages":[ { "type":"text", "text":"Hello, user" }, { "type":"text", "text":"May I help you?" } ] }'
44. { "replyToken":"nHuyWiB7yP5Zw52FIkcQobQuGDXCTA", "messages":[ { "type":"text", "text":"Hello, user" }, { "type":"text", "text":"May I help you?" } ] }
45. { "replyToken":"nHuyWiB7yP5Zw52FIkcQobQuGDXCTA", "messages":[ { "type":"text", "text":"Hello, user" }, { "type":"text", "text":"May I help you?" } ] }
49. Advanced • Database • Async • Public file
50. Be a Full Stack Swift Developer
51. Path Component: Constant http://localhost:8080/hello/vapor
52. Path Component: Parameter http://localhost:8080/hello/iPlayground
53. Route Groups
54. Route Collection routes.swift HelloController.swift
55. Returning JSON http://localhost:8080/json/iPlayground
56. Returning JSON http://localhost:8080/json/iPlayground
57. URL Query http://localhost:8080/query?name=iPlayground
58. Redirect http://localhost:8080/redirect
59. Fluent • Object–relational mapping (ORM) framework for Swift • Supported type • PostgreSQL • SQLite • MySQL • MongoDB
60. Configuration
61. Model
62. Migration configure.swift CreateTodo.swift
63. Querying
64. Async http://localhost:8080/async/iPlayground
65. Async http://localhost:8080/map/iPlayground
66. Public files
67. Public files http://localhost:8080/iPlayground.png
68. Hosting Heroku ngrok
69. Heroku • Download and Install Heroku CLI • Log in to Heroku • Create a new Heroku app from the Heroku dashboard • Connect with Heroku • Set Buildpack • Swift version file • Procfile • Deploy brew install heroku/brew/heroku heroku login heroku git:remote -a {HEROKU_APP_NAME} heroku buildpacks:set vapor/vapor echo 5.2.1 > .swift-version echo web: Run serve --env production --hostname 0.0.0.0 --port $PORT > Procfile git add . git commit -m 'First commit' git push heroku master
70. http://localhost:8080/ ngrok client ngrok server aaaaaaaaa