101 lines
3.9 KiB
Bash
Executable File
101 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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FALLBACK='{"temp":0,"feelslike":0,"humidity":0,"wind":0,"desc":"Unavailable","icon":"","city":""}'
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CACHE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/eww"
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LOC_CACHE="$CACHE_DIR/weather-location"
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UA="eww-bar/1.0 cedric.hoelzl@gmail.com"
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mkdir -p "$CACHE_DIR"
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get_location() {
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# Cache location for 1 hour; IP rarely changes
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if [ -f "$LOC_CACHE" ] && [ -n "$(find "$LOC_CACHE" -mmin -60 2>/dev/null)" ]; then
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cat "$LOC_CACHE"
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return 0
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fi
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data=$(curl -sf --max-time 5 "http://ip-api.com/json?fields=lat,lon,city") || return 1
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echo "$data" | tee "$LOC_CACHE"
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}
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icon_for() {
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case "$1" in
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*thunder*) echo "" ;;
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*snow*|*sleet*) echo "" ;;
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heavyrain*|*heavyrainshowers*) echo "" ;;
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*rain*|*shower*) echo "" ;;
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fog*) echo "" ;;
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cloudy*) echo "" ;;
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partlycloudy*) echo "" ;;
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fair*|clearsky*) echo "" ;;
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*) echo "" ;;
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esac
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}
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desc_for() {
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case "$(echo "$1" | sed 's/_day//;s/_night//;s/_polartwilight//')" in
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clearsky) echo "Clear sky" ;;
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fair) echo "Fair" ;;
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partlycloudy) echo "Partly cloudy" ;;
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cloudy) echo "Cloudy" ;;
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fog) echo "Foggy" ;;
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lightrain) echo "Light rain" ;;
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rain) echo "Rain" ;;
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heavyrain) echo "Heavy rain" ;;
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lightrainshowers) echo "Light showers" ;;
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rainshowers) echo "Rain showers" ;;
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heavyrainshowers) echo "Heavy showers" ;;
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lightrainandthunder) echo "Light rain & thunder" ;;
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rainandthunder) echo "Rain & thunder" ;;
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heavyrainandthunder) echo "Heavy rain & thunder" ;;
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*showersandthunder) echo "Showers & thunder" ;;
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lightsleet|lightsleetshowers) echo "Light sleet" ;;
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sleet|sleetshowers) echo "Sleet" ;;
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heavysleet|heavysleetshowers) echo "Heavy sleet" ;;
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*sleetandthunder) echo "Sleet & thunder" ;;
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lightsnow|lightsnowshowers) echo "Light snow" ;;
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snow|snowshowers) echo "Snow" ;;
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heavysnow|heavysnowshowers) echo "Heavy snow" ;;
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*snowandthunder) echo "Snow & thunder" ;;
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*) echo "$1" ;;
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esac
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}
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fetch() {
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loc=$(get_location) || { echo "$FALLBACK"; return; }
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lat=$(echo "$loc" | jq -r '.lat')
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lon=$(echo "$loc" | jq -r '.lon')
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city=$(echo "$loc" | jq -r '.city')
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data=$(curl -sf --max-time 8 \
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-H "User-Agent: $UA" \
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-H "Accept: application/json" \
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"https://api.met.no/weatherapi/locationforecast/2.0/compact?lat=$lat&lon=$lon") \
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|| { echo "$FALLBACK"; return; }
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d='.properties.timeseries[0].data'
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temp=$( echo "$data" | jq -r "${d}.instant.details.air_temperature | round")
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humidity=$(echo "$data" | jq -r "${d}.instant.details.relative_humidity | round")
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wind_ms=$( echo "$data" | jq -r "${d}.instant.details.wind_speed")
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wind=$( echo "$wind_ms" | awk '{printf "%d", $1 * 3.6}')
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code=$( echo "$data" | jq -r \
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"(${d}.next_1_hours.summary.symbol_code) // (${d}.next_6_hours.summary.symbol_code) // \"cloudy\"")
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# Simplified apparent temperature: wind chill below 10°C, else = temp
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feelslike=$(echo "$temp $wind" | awk '{
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t=$1; v=$2
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if (v > 4.8 && t < 10)
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printf "%d", 13.12 + 0.6215*t - 11.37*(v^0.16) + 0.3965*t*(v^0.16)
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else
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printf "%d", t
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}')
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icon=$(icon_for "$code")
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desc=$(desc_for "$code")
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printf '{"temp":%s,"feelslike":%s,"humidity":%s,"wind":%s,"desc":"%s","icon":"%s","city":"%s"}\n' \
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"$temp" "$feelslike" "$humidity" "$wind" "$desc" "$icon" "$city"
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}
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fetch
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while true; do sleep 600; fetch; done
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