Weather

A weather application made on top of the weather.gov and Nominatim/OpenStreetMap APIs, written in Go (v1.22.4)

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The demo video is generated using vhs.

See demo.tape or interactive.tape for the exact commands seen above. For the extended video, see here.

Usage

• geocast or geocast me to get the weather forecast for the current IP address.
• geocast [city] to get the weather forecast for a city.
• geocast [lat,lon] to get the weather forecast for a latitude and longitude.
• geocast --interactive to get the weather forecast for the current IP address in an interactive mode.

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• geocast geocode or geocast g to geocode a city.
• geocast geocode [city] to geocode a city.
• geocast geocode [lat,lon] to reverse geocode a latitude and longitude.
• geocast geocode --interactive to geocode a city in an interactive mode.

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• geocast forecast or geocast f to get the weather forecast for the current IP address.
• geocast forecast [city] to get the weather forecast for a city.
• geocast forecast [lat,lon] to get the weather forecast for a latitude and longitude.
• geocast forecast --interactive to get the weather forecast for the current IP address in an interactive mode.

Data Sources

1. Geocoding

   • ipinfo
   • Nominatim/OpenStreetMap (osm)

2. Weather

   • weather.gov (US)

Sample US Data

City	State	Latitude	Longitude
Seattle	WA	47.6062	-122.3321
Austin	TX	30.2672	-97.7431
Cleveland	OH	41.4993	-81.6944
Hartford	CT	41.7658	-72.6734
Boston	MA	42.3601	-71.0589
Los Angeles	CA	34.0522	-118.2437
Pittsburgh	PA	40.4406	-79.9959

Test Coverage

This project leverages a few tools executed by coverage.py to generate the below coverage image, namely playwright and the built-in go tool cover command.

Updating Test Coverage

To ensure that you're able to generate the coverage image, you'll need to install the playwright package and install the chromium browser.

Setup the virtual environment and install the dependencies:

virtualenv .venv
source .venv/bin/activate
pip install -r requirements.txt

Then, install playwright with firefox and chromium:

playwright install

More Thoughts

To run the tests, run make test from the root directory. Much of the tests rely on capturing stdout and checking for expected output. The test/helper.go file contains a helper function that captures stdout and returns the output as a string. It can be a buffer but I prefer to use a string because it's easier to work with (e.g., strings.Contains(output, want)).

Viewing Coverage

Click the "Coverage Report" button below to view the coverage report. I just did this for fun. Browser automation with playwright is super cool and I quite like the design of Pico and its ease of use.

Report