#!/usr/bin/env bash
# commands/apache.command.sh
#
# Manages the Apache web server.
#
# Usage:
#   dx apache validate     — validate vhost configuration
#   dx apache reload       — graceful reload (picks up vhost changes)
#   dx apache restart      — full restart
#   dx apache vhosts       — list all loaded virtual hosts
#   dx apache modules      — list all loaded Apache modules
#   dx apache version      — show Apache version
#   dx apache logs <type>  — tail error or access logs

# ============================================
# Lifecycle
# ============================================

function cmd::apache::on_load() {
  load_module apache

  flag::register --debug
}

# ============================================
# Public entrypoint
# ============================================

function cmd::apache::run() {
  local subcmd="${1:-help}"
  shift || true

  case "$subcmd" in
    validate)  cmd::apache::validate ;;
    reload)    cmd::apache::reload   ;;
    restart)   cmd::apache::restart  ;;
    vhosts)    cmd::apache::vhosts   ;;
    modules)   cmd::apache::modules  ;;
    version)   cmd::apache::version  ;;
    logs)      cmd::apache::logs "$@" ;;
    help)      cmd::apache::help ;;
    *)
      log::error "Unknown subcommand: '${subcmd}'"
      cmd::apache::help
      return 1
      ;;
  esac
}

# ============================================
# Help
# ============================================

function cmd::apache::help() {
  cat <<EOF
Usage: dx apache <subcommand>

Manages the Apache web server.

Subcommands:
  validate          Validate vhost configuration
  reload            Graceful reload (picks up config changes)
  restart           Full restart
  vhosts            List all loaded virtual hosts
  modules           List all loaded Apache modules
  version           Show Apache version
  logs [type]       Tail logs (error | access, default: error)

Examples:
  dx apache validate
  dx apache reload
  dx apache vhosts
  dx apache logs access
EOF
}

# ============================================
# Subcommands
# ============================================

function cmd::apache::validate() {
  log::info "Validating Apache configuration..."
  if apache::validate_config; then
    log::success "Configuration is valid"
  else
    log::error "Configuration has errors"
    return 1
  fi
}

function cmd::apache::reload() {
  log::info "Reloading Apache..."
  apache::reload
  log::success "Apache reloaded"
}

function cmd::apache::restart() {
  log::info "Restarting Apache..."
  apache::restart
  log::success "Apache restarted"
}

function cmd::apache::vhosts() {
  log::info "Loaded virtual hosts:"
  apache::list_vhosts
}

function cmd::apache::modules() {
  log::info "Loaded Apache modules:"
  apache::list_modules
}

function cmd::apache::version() {
  apache::version
}

function cmd::apache::logs() {
  local type="${1:-error}"

  case "$type" in
    error)  apache::logs::error ;;
    access) apache::logs::access ;;
    *)
      log::error "Unknown log type: '${type}' (must be 'error' or 'access')"
      return 1
      ;;
  esac
}