Simple alternative to wttr.in using OpenWeatherMap

wttr.sh

#!/bin/bash

help() {
  echo "Usage: wttr.sh -l [Location]"
}

if [ "$#" == 0 ]; then
  help
  echo -e "\nwttr.sh requires at least a Location as Option. Try 'wttr.sh -l London'"
  exit 1
fi

OPTS=$(getopt -o hdl:jpw --long help,debug,location:,json,prettyjson,waybar -n 'wttr.sh' -- "$@")
if [[ $? -ne 0 ]]; then
  echo "ERR: Error when analyzing options!" >&2
  exit 1
fi

OPT_DEBUG=0
OPT_JSON=0
OPT_WAYBAR=0
ARG_LOCATION=""

eval set -- "$OPTS"
while [ : ]; do
  case "$1" in
    -h | --help)
      help
      shift
      ;;
    -d | --debug)
      OPT_DEBUG=1
      shift
      ;;
    -l | --location)
      ARG_LOCATION="$2"
      shift 2
      ;;
    -j | --json)
      OPT_JSON=1
      shift
      ;;
    -p | --prettyjson)
      OPT_JSON=2
      shift
      ;;
    -w | --waybar)
      OPT_WAYBAR=1
      shift
      ;;
    --)
      shift
      break 2
      ;;
    *)
      echo "ERR: Internal Error!"
      exit 1
      ;;
  esac

done

[ $OPT_DEBUG -eq 1 ] && echo "DEBUG: $OPT_DEBUG | JSON: $OPT_JSON | LOCATION: $ARG_LOCATION"

API_KEY="14785236987456321"
LANG="en"

# Function to get Emoji from icon id (e.g. 04d)
iconid_to_emoji() {
  i=''
  case $1 in
    01d)
      icon=$'' #clear day
      ;;
    01n)
      icon=$'' #clear night
      ;;
    02d)
      icon=$'' #few clouds day
      ;;
    02n)
      icon=$'' #few clouds night
      ;;
    03* | 04*)
      icon=$'' #scattered/broken clouds day/night
      ;;
    09*)
      icon=$'' #shower rain day/night
      ;;
    10d)
      icon=$'' #rain day
      ;;
    10n)
      icon=$'' #rain night
      ;;
    "10d 11d")
      icon=$'' #thunderstorm day
      ;;
    "10n 11n")
      icon=$'' #thunderstorm night
      ;;
    11*)
      icon=$'' #thunderstorm generic
      ;;
    13*)
      icon=$'' #snow day/night
      ;;
    50*)
      icon=$'' #fog day/night
      ;;
    *)
      icon=$''
      ;;
  esac
  echo -e $icon
}

# Function to map wind direction in degrees to arrows
wind_to_arrow() {
  local deg=$1
  if [ $deg -ge 0 -a $deg -lt 23 ] || [ $deg -ge 338 ]; then
    echo "→"
  elif [ $deg -ge 23 -a $deg -lt 68 ]; then
    echo "↗️"
  elif [ $deg -ge 68 -a $deg -lt 113 ]; then
    echo "↑"
  elif [ $deg -ge 113 -a $deg -lt 158 ]; then
    echo "↖️"
  elif [ $deg -ge 158 -a $deg -lt 203 ]; then
    echo "←"
  elif [ $deg -ge 203 -a $deg -lt 248 ]; then
    echo "↙️"
  elif [ $deg -ge 248 -a $deg -lt 293 ]; then
    echo "↓"
  else
    echo "↘️"
  fi
}

# Get latitude and longitude of the location
location=$(echo "$ARG_LOCATION" | sed 's/ /%20/g')  # URL-encode spaces
geo_data=$(curl -s "http://api.openweathermap.org/geo/1.0/direct?q=$location&appid=$API_KEY")
[ $OPT_DEBUG -eq 1 ] && echo "Geo Data: $geo_data"

lat=$(echo $geo_data | jq -r '.[0].lat')
lon=$(echo $geo_data | jq -r '.[0].lon')

# Get current weather data
weather_data=$(curl -s "http://api.openweathermap.org/data/2.5/weather?lat=$lat&lon=$lon&appid=$API_KEY&units=metric&lang=$LANG")
[ $OPT_DEBUG -eq 1 ] && echo "Weather Data: $weather_data"

# Print to JSON-File
if [ $OPT_JSON -gt 0 ]; then
  if [ $OPT_JSON -eq 1 ]; then
    echo "$weather_data"
  else
    echo "$weather_data" | jq .
  fi
  exit 0
fi

location_name=$(echo $weather_data | jq -r '.name')
country=$(echo $weather_data | jq -r '.sys.country')
weather_main=$(echo $weather_data | jq -r '.weather[0].main')
weather_description=$(echo $weather_data | jq -r '.weather[0].description')
iconid=$(echo $weather_data | jq -r '.weather[0].icon')
temp=$(echo $weather_data | jq -r '.main.temp' | awk '{printf "%.0f", $1}')
wind_speed=$(echo $weather_data | jq -r '.wind.speed' | awk '{ printf "%.0f\n", $1 * 3.6}')
wind_deg=$(echo $weather_data | jq -r '.wind.deg')

# Get Emoji from Icon ID
weather_emoji=$(iconid_to_emoji $iconid)

# Convert wind direction to arrow
wind_arrow=$(wind_to_arrow "$wind_deg")

# Prepare Output
if [ $OPT_WAYBAR -eq 1 ]; then
  if (( $(echo "$temp > 0" | bc -l) )); then
    CLASS="temp_above_zero"
  else
    CLASS="temp_below_zero"
  fi
  TEXT=$"${weather_emoji} ${temp}°C"
  TOOLTIP=$"$location_name, $country: $weather_main $weather_emoji ($weather_description) ${temp}°C ${wind_arrow}${wind_speed}km/h"
  jq -nc \
    --arg "class" "$CLASS" \
    --arg "text" "$TEXT" \
    --arg "tooltip" "$TOOLTIP" \
    '$ARGS.named'
else
  # Print the one-liner
  echo -e $"$location_name, $country: $weather_emoji ${temp}°C ${wind_arrow}${wind_speed}km/h"
fi