#!/bin/bash

# LibrePortal Task Processor Systemd Service Setup
# Replaces crontabSetupTaskProcessor with systemd service.
#
# Idempotent: computes the desired unit for the CURRENT docker mode and only
# rewrites + daemon-reloads + restarts when it actually differs from what's on
# disk. So routine re-runs are no-ops (no needless restart that would kill an
# in-flight task), while a rooted<->rootless switch — which changes the env
# block — triggers exactly one rewrite + restart so the processor re-reads the
# new mode. Safe to call from install AND from the docker-type switcher.
installLibrePortalWebUITaskService()
{
  [[ "$CFG_REQUIREMENT_WEBUI_SERVICE" == "true" ]] || return 0

  local task_processor_script="$install_scripts_dir/crontab/task/crontab_task_processor.sh"
  local task_dir="$containers_dir/libreportal/frontend/data/tasks"

  # Point the processor at the task dir (idempotent). This edits the
  # manager-owned install tree, so no privilege is needed.
  if [ -f "$task_processor_script" ]; then
    sed -i "s|TASK_DIR=\".*\"|TASK_DIR=\"$task_dir\"|g" "$task_processor_script"
    chmod +x "$task_processor_script"
  else
    isNotice "Task processor script not found"
  fi

  # The unit itself is generated + installed by the root-owned svc helper (it
  # reads the mode + install-user uid from config to build the rootless
  # DOCKER_HOST/XDG_RUNTIME_DIR Environment= lines). Idempotent: only restarts on
  # an actual change, so a rooted<->rootless switch re-reads the new mode without
  # bouncing the processor on routine re-runs.
  local svc_result
  svc_result="$(runSvc install)"
  if [[ "$svc_result" == "updated" ]]; then
    isSuccessful "LibrePortal task processor service installed/updated ($CFG_DOCKER_INSTALL_TYPE)."
  else
    isSuccessful "LibrePortal task processor service already up to date."
  fi

  # Drop the legacy crontab entry if present (superseded by the service). We are
  # the manager, so operate on its own crontab directly.
  if crontab -l 2>/dev/null | grep -q "task_processor.sh"; then
    crontab -l 2>/dev/null | grep -v "task_processor.sh" | crontab -
    isNotice "Removed task processor from crontab"
  fi
}
