Japan Weather Radar Map (雨雲レーダー) on Slack

This is a working example app which displays Japan weather radar maps on Slack. This application is built with Bolt⚡️ and Yahoo! JAPAN Static Map API (雨雲レーダー表示).

/amesh {prefecture name}

This command posts an animated GIF showing the forecasting weather map.

/amesh {prefecture name} now

This command instantly posts the present moment image.

/amesh {prefecture name} today

This command posts the transition of weather map in the last 24 hours.

Map Mode

https://developer.yahoo.co.jp/webapi/map/openlocalplatform/v1/static.html#request-param

The defualt map mode is map. If you'd like to customize the appearance, set YAHOO_JAPAN_API_MAP_MODE env variable with either of the following values.

• map - 通常の地図
• photo - 航空写真
• map-b1 - 地下街
• hd - ハイビジョン地図
• hybrid - ハイブリッド地図
• blankmap - 白地図
• osm - Open Street Map

Here is the output with hybrid mode.

How to run this app

Create a Slack App

https://api.slack.com/apps

• Features > OAuth & Permissions:
  • Scopes:
    • "bot"
    • "commands"
    • "files:write:user"
  • Click "Save Changes"
• Features > Slash Commands:
  • Click "Create New Command"
    • Command
      • Set /amesh
    • Request URL
      • Set https://{your app name}.herokuapp.com/slack/events
    • Short Description
      • Set something helpful for users
    • Click "Save"
• Features > Bot User:
  • Click "Add a Bot User"
  • Click "Add Bot User"
• Settings > Install App:
  • Complete "Install App"

Run the app on your laptop

# prep
nvm use 10.13.0 # Bolt runs on Node 10.13+
cp -p _env .env
vi .env
source .env
npm i

# run the app
npm run local

# on another terminal window
ngrok http 3000

Deploy to Heroku

• Set env variables on Heroku
  • (Slack) Slash command name: amesh or your favorite one
  • (Slack) Settings > Basic Information > App Credentials > Siginging Secret
  • (Slack) Settings > Install App > Bot User OAuth Access Token
  • (Yahoo! JAPAN) Application ID (https://e.developer.yahoo.co.jp/dashboard/)
  • (Yahoo! JAPAN) Static Map Mode (https://developer.yahoo.co.jp/webapi/map/openlocalplatform/v1/static.html#request-param)

Run /amesh commands on Slack

/amesh # displays weather map for Tokyo area
/amesh osaka now # displays a single image for Osaka area
/amesh hokkaido today # displays the transition of weather map in the last 24 hours for Hokkaido area