#!/usr/bin/env bash
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##@Version           :  202511300100-git
# @@Author           :  Jason Hempstead
# @@Contact          :  jason@casjaysdev.pro
# @@License          :  WTFPL
# @@ReadME           :  update-httpd-files --help
# @@Copyright        :  Copyright: (c) 2025 Jason Hempstead, Casjays Developments
# @@Created          :  Sunday, Nov 30, 2025 01:00 EST
# @@File             :  update-httpd-files
# @@Description      :  Update httpd files with last updated timestamp and DNS server status
# @@Changelog        :  New script
# @@TODO             :  Better documentation
# @@Other            :
# @@Resource         :
# @@Terminal App     :  no
# @@sudo/root        :  no
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# shellcheck shell=bash
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# Default directories to process
DEFAULT_DIRS="/usr/share/httpd/default /data/htdocs/www"

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# Show help
__show_help() {
  cat <<EOF
Usage: ${0##*/} [OPTIONS] [DIRECTORY...]

Update httpd files with last updated timestamp and DNS server status.

Options:
  -h, --help    Show this help message
  -q, --quiet   Suppress output messages

Arguments:
  DIRECTORY     One or more directories to process (default: $DEFAULT_DIRS)

Examples:
  ${0##*/}                           # Process default directories
  ${0##*/} /var/www/html             # Process specific directory
  ${0##*/} /var/www /usr/share/httpd # Process multiple directories

EOF
  exit 0
}

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# Update files in a directory
__update_httpd_files() {
  local httpd_dir="${1:-/usr/share/httpd}"
  local last_updated dns_status_text

  # Get current date in format: Wednesday, January 29, 2025 at 11:14
  last_updated="$(date '+%A, %B %d, %Y at %H:%M')"

  # Check if named (BIND) is running
  if pgrep -x "named" >/dev/null 2>&1 || [ -f "/run/init.d/named.pid" ]; then
    dns_status_text="😺 DNS Server Status: Running 😺"
  else
    dns_status_text="🛑 DNS Server Status: Stopped 🛑"
  fi

  # Replace placeholders in all files under httpd directory
  [ -d "$httpd_dir" ] || return 0
  find "$httpd_dir" -type f \( -name "*.html" -o -name "*.htm" -o -name "*.php" -o -name "*.md" -o -name "*.txt" \) \
    -exec sed -i "s|REPLACE_LAST_UPDATED_ON|$last_updated|g" {} \; \
    -exec sed -i "s|Last updated on:.*|Last updated on: $last_updated|g" {} \; \
    -exec sed -i "s|REPLACE_DNS_SERVER_STATUS|$dns_status_text|g" {} \; \
    -exec sed -i "s|😺 DNS Server Status:.*😺|$dns_status_text|g" {} \; \
    -exec sed -i "s|🛑 DNS Server Status:.*🛑|$dns_status_text|g" {} \; 2>/dev/null

  [ "$QUIET" != "true" ] && echo "Processed directory: $httpd_dir"
  return 0
}

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# Main
QUIET="false"
DIRS=()

# Parse arguments
while [ $# -gt 0 ]; do
  case "$1" in
    -h|--help)
      __show_help
      ;;
    -q|--quiet)
      QUIET="true"
      shift
      ;;
    -*)
      echo "Unknown option: $1" >&2
      exit 1
      ;;
    *)
      DIRS+=("$1")
      shift
      ;;
  esac
done

# Use default directories if none specified
if [ ${#DIRS[@]} -eq 0 ]; then
  for dir in $DEFAULT_DIRS; do
    DIRS+=("$dir")
  done
fi

# Process each directory
for dir in "${DIRS[@]}"; do
  __update_httpd_files "$dir"
done

exit 0