TOC Project 2022 line bot

主題

抽美女帥哥

發想

想起當初line剛普及時，出現了一款line bot，輸入「抽」即可隨機得到一張美女圖片，這對當時的我來說實在是血脈賁張，於是設計這款line bot藉以復刻當年的美好時光

操作方式

加入好友後，輸入「美女」或「帥哥」，接著輸入「抽」即可獲得一張美女或帥哥的圖片，輸入「重新輸入」即可重新做選擇

FSM

Setup

Prerequisite

• Python 3.6
• Pipenv
• Facebook Page and App
• HTTPS Server

Install Dependency

pip3 install pipenv

pipenv --three

pipenv install

pipenv shell

• pygraphviz (For visualizing Finite State Machine)
  • Setup pygraphviz on Ubuntu
  • Note: macOS Install error

Secret Data

You should generate a .env file to set Environment Variables refer to our .env.sample. LINE_CHANNEL_SECRET and LINE_CHANNEL_ACCESS_TOKEN MUST be set to proper values. Otherwise, you might not be able to run your code.

Run Locally

You can either setup https server or using ngrok as a proxy.

a. Ngrok installation

• macOS, Windows, Linux

or you can use Homebrew (MAC)

brew cask install ngrok

ngrok would be used in the following instruction

ngrok http 8000

After that, ngrok would generate a https URL.

Run the sever

python3 app.py

b. Servo

Or You can use servo to expose local servers to the internet.

Finite State Machine

Usage

The initial state is set to user.

Every time user state is triggered to advance to another state, it will go_back to user state after the bot replies corresponding message.

• user

  • Input: "go to state1"

    • Reply: "I'm entering state1"

  • Input: "go to state2"

    • Reply: "I'm entering state2"

Deploy

Setting to deploy webhooks on Heroku.

Heroku CLI installation

• macOS, Windows

or you can use Homebrew (MAC)

brew tap heroku/brew && brew install heroku

or you can use Snap (Ubuntu 16+)

sudo snap install --classic heroku

Connect to Heroku

1. Register Heroku: https://signup.heroku.com

2. Create Heroku project from website

3. CLI Login

   heroku login

Upload project to Heroku

1. Add local project to Heroku project

   heroku git:remote -a {HEROKU_APP_NAME}

2. Upload project

   git add .
   git commit -m "Add code"
   git push -f heroku master
   

3. Set Environment - Line Messaging API Secret Keys

   heroku config:set LINE_CHANNEL_SECRET=your_line_channel_secret
   heroku config:set LINE_CHANNEL_ACCESS_TOKEN=your_line_channel_access_token
   

4. Your Project is now running on Heroku!

   url: {HEROKU_APP_NAME}.herokuapp.com/callback

   debug command: heroku logs --tail --app {HEROKU_APP_NAME}

5. If fail with pygraphviz install errors

   run commands below can solve the problems

   heroku buildpacks:set heroku/python
   heroku buildpacks:add --index 1 heroku-community/apt
   

   refference: https://hackmd.io/@ccw/B1Xw7E8kN?type=view#Q2-如何在-Heroku-使用-pygraphviz

Reference

Pipenv ❤️ @chihsuan

TOC-Project-2019 ❤️ @winonecheng

Flask Architecture ❤️ @Sirius207

Line line-bot-sdk-python