#!/bin/bash

source /bigscoots/includes/common.sh

# Define the URL of the server file
abuserbl_file_url="http://67.202.70.147/abuserbl_block.list"

# Define the path to the local file
local_abuserbl_path="/root/.bigscoots/nginx/includes/abuserbl_block.list"

# Define a flag to track whether ngxreload_t has been called
ngx_reloaded=false

# Fetch the MD5 checksum of the server file
abuserbl_checksum=$(curl -s "$abuserbl_file_url" | md5sum | awk '{print $1}')

# Check if the server checksum is not empty
if [[ -n "$abuserbl_checksum" ]]
then
    # Check if the local file exists
    if [[ -f "$local_abuserbl_path" ]]
    then
        # Calculate the MD5 checksum of the local file
        local_checksum=$(md5sum "$local_abuserbl_path" | awk '{print $1}')

        # Check if the checksums are different
        if [[ "$abuserbl_checksum" != "$local_checksum" ]]
        then
            # Checksums are different. Updating local file...
            # Download the server file and replace the local file
            curl -s -o "$local_abuserbl_path" "$abuserbl_file_url"

            # Set the flag to indicate that ngxreload_t has been called
            ngx_reloaded=true
        fi
    else
        # Local file does not exist. Downloading the server file...
        # Download the server file to the local path
        curl -s -o "$local_abuserbl_path" "$abuserbl_file_url"

        # Set the flag to indicate that ngxreload_t has been called
        ngx_reloaded=true
    fi
else
    send_slack_alert "#wpo-alerts" ":warning:" "AbuseRBL" "NA" "Server checksum not found. Unable to compare." 
fi

add_after_line="include /usr/local/nginx/conf/cloudflare.conf;"
nginx_conf="/usr/local/nginx/conf/nginx.conf"
new_line="include /root/.bigscoots/nginx/includes/abuserbl_block.list;"

# Check if the include file already exists in nginx.conf
if ! grep -q "$new_line" "$nginx_conf"
then
    # Add the new_line after add_after_line using sed
    sed -i "\|$add_after_line|a $new_line" "$nginx_conf"
fi

mkdir -p /root/.bigscoots/nginx/includes
touch /root/.bigscoots/nginx/includes/abuserbl_block_whitelist.list

# Check if ngxreload_t has not been called earlier in the script
if [ "$ngx_reloaded" = true ]
then
    ngxreload_t
fi