Dmi Weather Telegram Bot
This Telegram bot can be used to get the weather forecast graphs for your desired city from www.dmi.dk.
How to use this Telegram Bot
This bot can be used by clicking on telegram.me/dmi_weather_bot or @dmi_weather_bot in your telegram app. After doing this you’ll get a description of the bot and can directly start using it and send commands.
More information concerning Telegram Bots can be found here: https://core.telegram.org/bots
Reasons for using this Telegram Bot
Personally I really like the clearly represented weather forecast graphs, which are provided by www.dmi.dk, but on a mobile device they are not easy to reach with the browser and I am not pleased by current apps for this service. So by implementing this bot I got the chance to really get the raw graphs, which saves my time, system resources on my mobile device and data volume from my mobile provider.
Tutorial
Creating a new Telegram Bot
In order to create a new bot you have to talk with @BotFather. There you can use several commands to create and configure your own bot.
Sending /help to the @BotFather gives an overview about the commands.
To create a new bot the /newbot command can be used.
Configure the Application
To run this Spring Boot application with your own bot you usually have to adjust the application.properties file. (https://github.com/SimonScholz/telegram-bot/blob/master/telegram-bot/src/main/resources/application.properties)
bot.api-key=97307424:AAEDj2IXFDEEYfQ6SY_Ma0W_CHu1mUmQ3h8
server.port=8080The bot.api-key property has to be changed to your own bot token and you might want to change the server.port property as well, e.g., to port 80.
By sending the /token command to the @BotFather and selecting your bot, you’ll get the token, which has to be placed in the application.properties as bot.api-key property value.
Starting the Spring Boot application
You can either import the project into the Spring Tool Suite (https://spring.io/tools/sts/all) and start it from the IDE or simply start the application by running the bootRun Gradle task.
// unix
telegram-bot > ./gradlew bootRun
// win
telegram-bot > gradlew.bat bootRunUse the Application
Once the application is running either from the IDE or with Gradle you can test it by navigating to http://localhost:8080/poll, which is used to poll your messages/commands.
Currently 4 commands are supported:
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/now {City name} - Get the current day overview image from dmi.dk
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/week {City name} - Get the week overview image from dmi.dk
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/en {german text} - translates german to english
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/de {english text} - translates english to german
When you send one of these commands to your bot and then open http://localhost:8080/poll the Spring Boot application will try to poll your commands and send appropriate answers to the chat with your bot.
Using a Webhook
Usually you’d want to use a webhook, if you’re providing a rest endpoint like this app does.
The webhook should point the /webhook endpoint, e.g., http://localhost:8080/webhook.
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Note
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You’ll have to substitute http://localhost:8080/webhook with {your.server.domain}/webhook, since the telegram bot won’t be able to reach the localhost of your machine.
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A nice way to set the webhook is by using curl:
curl https://api.telegram.org/bot{your api token}/setWebhook -F "url=https://{your-domain}/webhook"|
Tip
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See https://core.telegram.org/bots/api#setwebhook for further information about setting a webhook. |
Technologies
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pengrad java telegram bot api
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Spring Boot
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Lombok
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RxJava 2.x
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Retrofit
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Gradle
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H2 Database
Questions
Please make use of this bot, share your knowledge and adapt it for your needs.
Contributing
Feedback is highly appreciated. You may open issues, send pull requests or simply contact me.
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