write satalite connect script

usr/bin/satalite-wp-update

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC1090,SC1091
+
+# set -xv
+EUMETSAT_KEY="jdBM1PsDQUm0tCZfk9VXD6IaJoUa"
+EUMETSAT_SECRET="SumkiqFMU3MAGpt_azb1KXKgjdMa"
+URL="https://api.eumetsat.int/data"
+COL_ID="EO%3AEUM%3ADAT%3A0665"
+
+ping -c1 1.1.1.1 >>/dev/null || error "couldn't establish an internet connection!"
+
+# acquire the output directory
+if command -v xdg-user-dir; then
+	outdir="$(xdg-user-dir PICTURES)/eumetsat"
+elif [ -z "$HOME" ]; then
+	outdir="$HOME/.eumetsat"
+else
+	error "couldn't connect to either 'xdg-user-dir PICTURES' or '\$HOME'"
+fi
+
+# acquire the API key
+EUMETSAT_API=$(
+	curl -k -d "grant_type=client_credentials" \
+		-H "Authorization: Basic $(printf "%s:%s" "$EUMETSAT_KEY" "$EUMETSAT_SECRET" | base64)" \
+		https://api.eumetsat.int/token | jq -r '.["access_token"]'
+)
+
+error() {
+	printf "\033[31m%s\033[0m\n" "$1"
+	exit 1
+}
+
+apireq() {
+	curl -k -H "Authorization: Bearer $EUMETSAT_API" "$URL/$1" "${@:2}"
+}
+
+DATE="$(date -u +'%Y/%m/%d')"
+product=$(
+	apireq "browse/collections/$COL_ID/dates/$DATE/products?format=json" |
+		jq -r '.["products"].[0].["id"] | @uri'
+)
+
+[ -z "$product" ] && error "was unable to locate the latest product!"
+
+mkdir -p "$outdir"
+apireq "download/1.0.0/collections/$COL_ID/products/$product/browse" -o "$outdir/tmp.jpeg" || error "failed to download!"
+mv -f "$outdir/tmp.jpeg" "$outdir/curr.jpeg"
+
+# negate since default is rubbish
+ffmpeg -y -i photos/eumetsat/curr.jpeg -vf negate photos/eumetsat/curr.jpeg
+
+# update the feh background
+. "$HOME/.fehbg"