#!/bin/bash

## Send a notification with NTFY and check if the config file is complete

if [[ "$UID" == "0" ]]; then
    NTFY_CONFIG_FILE="/etc/ntfy/ntfy.conf"
else
    NTFY_CONFIG_FILE="$HOME/.config/ntfy/ntfy.conf"
fi

SERVER="https://ntfy.0k.io/"

if ! [ -e "$NTFY_CONFIG_FILE" ]; then
    mkdir -p "${NTFY_CONFIG_FILE%/*}"
    ## default option to change if needed
    echo "SERVER=$SERVER" > "$NTFY_CONFIG_FILE"
## else if $NTFY_CONFIG_FILE exist but SERVER is not defined
elif ! grep -q "^SERVER=" "$NTFY_CONFIG_FILE"; then
    echo "SERVER=$SERVER" >> "$NTFY_CONFIG_FILE"
fi

source "$NTFY_CONFIG_FILE"

for var in SERVER LOGIN PASSWORD; do
    if ! [ -v "$var" ]; then
        echo "Error: missing $var in $NTFY_CONFIG_FILE"
        exit 1
    fi
done


exname=${0##*/}
default_channel="main" 

usage="Usage: $exname [-c CHANNEL] MESSAGE 
----------------------------------------------
--- Send MESSAGE to the specified CHANNEL. ---
----------------------------------------------
If no CHANNEL is provided, the message will be sent to the default channel
Default CHANNEL is format as follow : ConfiguredLOGIN_${default_channel}"

while [[ $# -gt 0 ]]; do
    key="$1"

    case $key in
        -c|--channel)
        channel="$2"
        message="$3"
        shift # past argument
        shift # past value
        ;;
        *)    # unknown option
        if [ $# -eq 1 ]; then
            message="$1"
        else
            echo "Unknown option $key or missing message!" >&2
            echo "$usage" >&2
            exit 1
        fi
        break
        ;;
    esac
done

if [ -z "$channel" ]; then
    channel="$default_channel"
fi

if [ "$#" -eq 0 ]; then
    echo "$usage" >&2
    exit 1
fi

curl -s -u $LOGIN:$PASSWORD \
     -d "$message" "$SERVER/${LOGIN}_$channel" > /dev/null