#!/usr/bin/env bash
# SPDX-FileCopyrightText: 2025 Kris Lamoureux
# SPDX-License-Identifier: GPL-3.0-or-later
set -euo pipefail

for cmd in curl jq; do
	if ! command -v "$cmd" &>/dev/null; then
		echo "[ERROR]: $cmd is required but can't be found"
		exit 1
	fi
done

if [ $# -lt 3 ]; then
	echo "[ERROR]: Missing required arguments"
	echo "Usage: $0 <priority> <title> <message>"
	exit 1
fi

if [ -d ~/.config/gotify ] && [ -f ~/.config/gotify/env ]; then
	# shellcheck disable=SC1090
	. ~/.config/gotify/env
fi

if [ -z "${GOTIFY_URL:-}" ]; then
	echo "[ERROR]: GOTIFY_URL environment variable is not set"
	exit 1
fi

if [ -z "${GOTIFY_TOKEN:-}" ]; then
	echo "[ERROR]: GOTIFY_TOKEN environment variable is not set"
	exit 1
fi

PRIORITY="$1"
TITLE="$2"
MESSAGE="$3"

if ! echo "$PRIORITY" | grep -qE '^[0-9]+$'; then
	echo "[ERROR]: Priority must be a number, got: $PRIORITY"
	exit 1
fi

if ! PAYLOAD=$(
	jq -nc \
		--argjson priority "$PRIORITY" \
		--arg title "$TITLE" \
		--arg message "$MESSAGE" \
		'{title: $title, message: $message, priority: $priority}'
); then
	echo "[ERROR]: Error with input syntax"
	exit 1
fi

if ! RESPONSE=$(
	curl -sSf -X POST "$GOTIFY_URL/message" \
		-H "X-Gotify-Key: $GOTIFY_TOKEN" \
		-H "Content-Type: application/json" \
		-d "$PAYLOAD"
); then
	echo "[ERROR]: Couldn't send message to $GOTIFY_URL"
	echo "$RESPONSE"
	exit 1
fi

echo "$RESPONSE"
exit 0