#!/bin/bash
#
# Automatic Wake-up Script
# Author: Michael Haider
# Date: October 31, 2023
#
# This script retrieves the next wake-up time from A72 and schedules
# turning on the lights using the "at" command.

echo "Executed at: "
date

# Check if old "at" jobs have expired and delete them
delete_expired_at_jobs() {
  current_time=$(date +"%Y-%m-%d %H:%M:%S")
  old_jobs=$(/usr/bin/atq | awk -v current_time="$current_time" '$3 < current_time { print $1 }')

  if [ -n "$old_jobs" ]; then
    echo "Deleting expired 'at' jobs:"
    for job_id in $old_jobs; do
      /usr/bin/atrm "$job_id"
      echo "Deleted: $job_id"
    done
  else
    echo "No expired 'at' jobs found."
  fi

  # Debug: List all 'at' jobs
  echo "All 'at' jobs:"
  /usr/bin/atq

  # Keep only the earliest 'at' job and delete all other jobs
  next_job_id=$(/usr/bin/atq | sort -k3,4 -k5,5 | awk 'NR==1 {print $1}')
  if [ -n "$next_job_id" ]; then
    echo "Next 'at' job to keep: $next_job_id"
    /usr/bin/atrm $(/usr/bin/atq | awk -v next_job_id="$next_job_id" '$1 != next_job_id {print $1}')
    echo "Only the next 'at' job remains: $next_job_id"
  else
    echo "No 'at' jobs found."
  fi

  # Debug: List remaining 'at' jobs after deletion
  echo "Remaining 'at' jobs:"
  /usr/bin/atq
}

# Use the function to delete expired jobs
delete_expired_at_jobs

# Get the IP address of Lisa's iPhone (without Ping test)
check_ip() {
  mac_address="e4:cd:d1"  # Replace this with the MAC address
  attempts=10
  interval=5

  for ((i = 1; i <= $attempts; i++)); do
    A72_ip=$(arp-scan -r 5 -v --localnet | grep "$mac_address" | awk '{print $1}')

    if [ -n "$A72_ip" ]; then
      echo "Found IP: $A72_ip"
      return 0  # Success: IP address found
    fi

    if [ $i -lt $attempts ]; then
      echo "Waiting $interval seconds before the next attempt."
      sleep $interval
    fi
  done

  # All attempts unsuccessful
  echo "The target could not be reached after $attempts attempts."
  iobroker state set zigbee.0.04cd15fffee03198.state false
  return 1  # Error: IP address not found
}

# Execute the check_ip function.
check_ip || exit 1  # Exit the script if the target is unreachable

# File to store scheduled wake-up times
weckzeit_datei="/root/iobroker_scripts/general/.weckzeiten.txt"

# Target is reachable, retrieve alarm time over SSH
alarmTime=$(ssh -i /root/.ssh/A72 root@$A72_ip dumpsys alarm | grep -A 6 ":com.urbandroid.sleep.alarmclock.ALARM_ALERT" | grep "type=RTC_WAKEUP origWhen=" | cut -d= -f3 | cut -c1-16 | uniq)

if [ -n "$alarmTime" ]; then
  # Parse the date and time
  date=$(echo "$alarmTime" | cut -d ' ' -f 1)
  time=$(echo "$alarmTime" | cut -d ' ' -f 2)

  # Format the date and time
  new_format=$(date -d "$date $time" "+%H:%M %m/%d/%y")

  # Subtract 15 minutes from the time
  lightsOn=$(date -d "$new_format - 15 minutes" "+%H:%M %m/%d/%y")

  echo "Next Alarm: $new_format"
  echo "Turning on lights at: $lightsOn"

  # Check if the wake-up time is already scheduled
  if grep -Fxq "$lightsOn" "$weckzeit_datei"; then
    echo "Wake-up time already scheduled for: $lightsOn"
  else
    echo "Schedule wake-up time and save to file: $lightsOn"
    echo "$lightsOn" > "$weckzeit_datei"

    # Remove all existing 'at' Jobs
    /usr/bin/atrm $(/usr/bin/atq | awk '{print $1}')

    # Add the new 'at' Job
    echo "/root/iobroker_scripts/schlafzimmer/wecker.sh > /root/wecker.log" | at "$lightsOn"
  
    curl -u "Michaelis:u5ptufUFuDL6q4yEcSN3iqas5gtXNkN77Lx3cy3oX8UoSgFWdifYy9FVopv2Zwtu" -H "Icon:https://static.vecteezy.com/system/resources/previews/018/931/118/original/alarm-clock-icon-png.png" -d "Alarm set at: $new_format" https://ntfy.michaelis.digital/$HOSTNAME
  fi
else
  echo "No alarm set. Deleting scheduled wake-up times."
  #curl -u "Michaelis:u5ptufUFuDL6q4yEcSN3iqas5gtXNkN77Lx3cy3oX8UoSgFWdifYy9FVopv2Zwtu" -H "Icon:https://static.vecteezy.com/system/resources/previews/018/931/118/original/alarm-clock-icon-png.png" -H "Priority:High" -d "Alarm deleted" https://ntfy.michaelis.digital/$HOSTNAME

  rm "$weckzeit_datei"
fi