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OpenWeatherMap
==============
OpenWeatherMap is a haskell library to access <https://openweathermap.org/api>.
Requirements
============
OpenWeatherMap is written in Haskell with [GHC](http://www.haskell.org/ghc/).
All required Haskell libraries are listed in [openweathermap.cabal](openweathermap.cabal).
Use [cabal-install](http://www.haskell.org/haskellwiki/Cabal-Install) to fetch
and build all pre-requisites automatically.
Command-line utility
====================
The command-line utility `openweathermap` provides a means
to get human readable weather infromation.
Usage
-----
```
Usage: openweathermap [(-K|--api-key-file APIKEYFILE) | (-k|--api-key APIKEY)]
((-q|--query STRING) | --lat NUM --lon NUM)
[(-n|--current) | (-f|--forecast)] [-d|--debug]
Available options:
-K,--api-key-file APIKEYFILE
Read API key from this file
-k,--api-key APIKEY API key
-q,--query STRING City name, e. g. Santiago or Santiago,CU
--lat NUM Latitude in decimal degrees
--lon NUM Longitude in decimal degrees
-n,--current current weather (default)
-f,--forecast forecast weather
-d,--debug Enable debug
-h,--help Show this help text
```
By default, `openweathermap` reads the API key
from the `$XDG_CONFIG_HOME/openweathermap/key` file, where
[`$XDG_CONFIG_HOME`](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html)
is typically `~/.config` on Linux systems.
Examples
--------
```
$ openweathermap -q norilsk
Noril'sk,RU (69.3535°, 88.2027°), 2023-01-05 19:02:05 +0700: Clouds, H 98 %, ρ ?? g/m³, P 764 mmHg, T -35 °C, → 1 m/s
$ openweathermap --lat 55.7522200 --lon 37.6155600
Moscow,RU (55.7522°, 37.6156°), 2023-01-05 15:02:02 +0300: Clouds, H 95 %, ρ 3.05 g/m³, P 755 mmHg, T -8..-5 °C, ↙ 3 m/s
$ openweathermap -q калининград -f
Kaliningrad,RU (54.7065°, 20.511°)
2023-01-05 17:00:00 +0200: Snow, H 93 %, ρ 6.21 g/m³, P 750 mmHg, T +2..+5 °C, ↙ 6 m/s
2023-01-05 20:00:00 +0200: Clouds, H 88 %, ρ 4.82 g/m³, P 755 mmHg, T 0..+2 °C, ↙ 7 m/s
2023-01-05 23:00:00 +0200: Clouds, H 81 %, ρ 3.37 g/m³, P 761 mmHg, T -2 °C, ↙ 5 m/s
2023-01-06 02:00:00 +0200: Clouds, H 73 %, ρ 2.78 g/m³, P 764 mmHg, T -3 °C, ↙ 5 m/s
...
$ openweathermap --lat -12.0432 --lon -77.0282 -f
Lima,PE (-12.0432°, -77.0282°)
2023-01-05 10:00:00 -0500: Clouds, H 79 %, ρ 14.63 g/m³, P 749 mmHg, T +21..+23 °C, ↑ 3 m/s
2023-01-05 13:00:00 -0500: Clouds, H 70 %, ρ 14.35 g/m³, P 755 mmHg, T +23..+24 °C, ↗ 4 m/s
2023-01-05 16:00:00 -0500: Clouds, H 70 %, ρ 14.26 g/m³, P 760 mmHg, T +23 °C, ↑ 5 m/s
2023-01-05 19:00:00 -0500: Clouds, H 75 %, ρ 14.28 g/m³, P 761 mmHg, T +22 °C, ↑ 3 m/s
2023-01-05 22:00:00 -0500: Clouds, H 78 %, ρ 14.55 g/m³, P 762 mmHg, T +21 °C, ↑ 2 m/s
...
```
|
