#!/bin/bash

# .env variables: 
# BNRHOOK: discord webhook for the channel
# API: api url for heathcliff image

# create file if it doesn't exist
LAST_URL_PATH='/home/bread/servers/cliff/latest_url.txt'
touch $LAST_URL_PATH

# get the last image url
last_img_url=$(cat $LAST_URL_PATH)

# get current image url
new_img_url=$(curl $API)
echo "got new URL: $new_img_url"

if [[ "$last_img_url" == "$new_img_url" ]]; then
    # if it's the same image just exit
    echo "new URL matches previous URL; exiting."
    exit 1
else
    # send message to discord
    curl --request POST \
        --url "$BNRHOOK" \
        --header 'Content-Type: application/json' \
        --data '{
            "content": "'"$new_img_url"'"
        }'

    # write new url to file
    echo $new_img_url > $LAST_URL_PATH
    exit 0
fi