Template Code for TOC Project 2020

A Line bot based on a finite state machine

More details in the Slides and FAQ

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

pip3 install pipenv

pipenv --three

pipenv install

pipenv shell

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

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.

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

• 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.

python3 app.py

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

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"

Setting to deploy webhooks on Heroku.

• 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

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

2. Create Heroku project from website

3. CLI Login

   heroku login

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

Pipenv ❤️ @chihsuan

TOC-Project-2019 ❤️ @winonecheng

Flask Architecture ❤️ @Sirius207

Line line-bot-sdk-python