#!/usr/bin/with-contenv bashio
# shellcheck shell=bash
set -e

####################
# Update structure #
####################

APP_UID=20211

# 1. Fix the directories
for folder in /tmp/run/tmp /tmp/api /tmp/log /tmp/run /tmp/nginx/active-config "$TMP_DIR" "$NETALERTX_DATA" "$NETALERTX_DB" "$NETALERTX_CONFIG"; do
    mkdir -p "$folder"
    chown -R $APP_UID:$APP_UID "$folder"
    chmod -R 755 "$folder"
done

# 2. Fix /tmp and Standard Streams (CRITICAL)
chmod -R 1777 /tmp
# This allows the non-root user to write to the container logs
chmod 666 /dev/stdout /dev/stderr

# 3. Pre-create and chown log files
touch /tmp/log/app.php_errors.log /tmp/log/cron.log /tmp/log/stdout.log /tmp/log/stderr.log
chown $APP_UID:$APP_UID /tmp/log/*.log

# 4. Create Symlinks
for item in db config; do
    rm -rf "/data/$item"
    ln -sf "/config/$item" "/data/$item"
    chown -R $APP_UID:$APP_UID "/data/$item"
    chmod -R 755 "/data/$item"
done

# Fix php
sed -i 's|>>"\?/tmp/log/app\.php_errors\.log"\? 2>/dev/stderr|>>"/tmp/log/app.php_errors.log"|g' /services/start-php-fpm.sh
sed -i 's|TEMP_CONFIG_FILE=$(mktemp "${TMP_DIR}/netalertx\.conf\.XXXXXX")|TEMP_CONFIG_FILE=$(mktemp -p "${TMP_DIR:-/tmp}" netalertx.conf.XXXXXX)|' /services/start-php-fpm.sh
sed -i "/default_type/a include /etc/nginx/http.d/ingress.conf;" "${SYSTEM_NGINX_CONFIG_TEMPLATE}"

#####################
# Configure network #
#####################

# Configuration file path
config_file="/config/config/app.conf"

if [ -f /config/db/app.db ]; then
    chmod a+rwx /config/db/app.db
fi

# Function to execute the main logic
execute_main_logic() {
    bashio::log.info "Initiating scan of Home Assistant network configuration..."

    # Get the local IPv4 address
    local_ip="$(bashio::network.ipv4_address)"
    local_ip="${local_ip%/*}" # Remove CIDR notation
    echo "... Detected local IP: $local_ip"
    echo "... Scanning network for changes"

    # Ensure arp-scan is installed
    if ! command -v arp-scan &> /dev/null; then
        bashio::log.error "arp-scan command not found. Please install arp-scan to proceed."
        exit 1
    fi

    # Get current settings
    if ! grep -q "^SCAN_SUBNETS" "$config_file"; then
        bashio::log.fatal "SCAN_SUBNETS is not found in your $config_file, please correct your file first"
    fi

    # Iterate over network interfaces
    for interface in $(bashio::network.interfaces); do
        echo "Scanning interface: $interface"

        # Check if the interface is already configured
        if grep -q "$interface" "$config_file"; then
            echo "... $interface is already configured in app.conf"
        else
            # Update SCAN_SUBNETS in app.conf
            SCAN_SUBNETS="$(grep "^SCAN_SUBNETS" "$config_file" | head -1)"
            if [[ "$SCAN_SUBNETS" != *"$local_ip"*"$interface"* ]]; then
                # Add to the app.conf
                NEW_SCAN_SUBNETS="${SCAN_SUBNETS%]}, '${local_ip}/24 --interface=${interface}']"
                sed -i "/^SCAN_SUBNETS/c\\$NEW_SCAN_SUBNETS" "$config_file"
                # Check availability of hosts
                VALUE="$(arp-scan --interface="$interface" "${local_ip}/24" 2> /dev/null \
                    | grep "responded" \
                    | awk -F'.' '{print $NF}' \
                    | awk '{print $1}' || true)"
                echo "... $interface is available in Home Assistant (with $VALUE devices), added to app.conf"
            fi
        fi
    done

    bashio::log.info "Network scan completed."

}

# Function to wait for the config file
wait_for_config_file() {
    echo "Waiting for $config_file to become available..."
    while [ ! -f "$config_file" ]; do
        sleep 1
    done
    echo "$config_file is now available. Rebooting the addon."
    bashio::addon.restart
}

# Main script logic
if [ -f "$config_file" ]; then
    execute_main_logic
else
    wait_for_config_file &
    true
fi