Add a location to GNOME Weather via nominatim — NixOS-friendly nix-shell shebang rewrite of leo-joao/add-location-gnome-weather

addlocation.sh

#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash curl jq bc glib
# Add a location to GNOME Weather (and the GNOME Shell weather widget).
# NixOS-friendly rewrite of:
# https://github.com/leo-joao/add-location-gnome-weather/blob/main/addlocation.sh
#
# Usage: ./addlocation.sh [search terms...]

set -euo pipefail

if ! command -v gnome-weather >/dev/null 2>&1; then
	echo "GNOME Weather isn't installed" >&2
	exit 1
fi

# On NixOS the org.gnome.Weather gschema is not in gsettings' default search
# path; it lives next to the package in the system profile.
schemas_dir=$(ls -d /run/current-system/sw/share/gsettings-schemas/gnome-weather-* 2>/dev/null | head -1 || true)
if [[ -n "$schemas_dir" ]]; then
	export XDG_DATA_DIRS="$schemas_dir:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
fi

language=$(locale | sed -n 's/^LANG=\([^_]*\).*/\1/p')

if [[ $# -gt 0 ]]; then
	query="$*"
else
	read -rp "Type the name of the location you want to add to GNOME Weather: " query
fi

request=$(curl -sG "https://nominatim.openstreetmap.org/search" \
	--data-urlencode "q=$query" \
	--data-urlencode "format=json" \
	--data-urlencode "limit=1" \
	-H "Accept-Language: ${language:-en}" \
	-A "addlocation.sh (gnome-weather helper)")

if [[ $(jq 'length' <<<"$request") -eq 0 ]]; then
	echo "No locations found, consider removing some search terms" >&2
	exit 1
fi

display_name=$(jq -r '.[0].display_name' <<<"$request")
name=$(jq -r '.[0].name' <<<"$request")

read -rp "If this is not the location you wanted, consider adding search terms
Are you sure you want to add \"$display_name\"? [y/n]: " answer
if [[ "$answer" != "y" ]]; then
	echo "Not adding location"
	exit 0
fi

# GNOME Weather stores coordinates in radians.
lat=$(bc -l <<<"$(jq -r '.[0].lat' <<<"$request") * 4 * a(1) / 180")
lon=$(bc -l <<<"$(jq -r '.[0].lon' <<<"$request") * 4 * a(1) / 180")

location="<(uint32 2, <('$name', '', false, [($lat, $lon)], @a(dd) [])>)>"

add_to_schema() {
	local schema=$1
	local current
	current=$(gsettings get "$schema" locations)
	if [[ "$current" == "@av []" ]]; then
		gsettings set "$schema" locations "[$location]"
	elif [[ "$current" == *"'$name'"* ]]; then
		echo "$schema already contains '$name', skipping"
		return
	else
		gsettings set "$schema" locations "${current%]}, $location]"
	fi
	echo "Added '$name' to $schema"
}

add_to_schema org.gnome.Weather
add_to_schema org.gnome.shell.weather