Crypto Coin Line Bot

• data from Coin Market Cap

Introduction

Bot for searching crypto coin, it can show the following items

• Real-time price
• 1hr, 24hr, 7d, 30d changing price
• Metadata
• Support multiple users using at the same time

Usage

Enter 'menu' to start the bot

• 

Enter 'introduction' or press the introduction button

• 

Enter 'fsm' or press the introduction button

• 

In fsm graph, you can press the image to the image website

Enter 'crypto coins' or press the introduction button to choose coins

• 

Enter 'price' or press the introduction button to get price detail

• 

Enter 'metadata' or press the introduction button to get metadata

• 

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

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