#!/command/with-contenv bash

source /assets/functions/00-container
PROCESS_NAME="db-backup{{BACKUP_NUMBER}}-scheduler"
check_container_initialized
check_service_initialized init 10-db-backup
source /assets/functions/10-db-backup
source /assets/defaults/10-db-backup
bootstrap_variables backup_init {{BACKUP_NUMBER}}
bootstrap_variables parse_variables {{BACKUP_NUMBER}}
if [ -z "${backup_job_db_name}" ]; then
    PROCESS_NAME="{{BACKUP_NUMBER}}${backup_job_db_host//\//_}"
else
    PROCESS_NAME="{{BACKUP_NUMBER}}-${backup_job_db_host//\//_}__${backup_job_db_name}"
fi

trap ctrl_c INT

if [[ "${MODE,,}" =~ "standalone" ]] || [ "${1,,}" = "manual" ] || [ "${1,,}" = "now" ]; then
    print_debug "Detected Manual Mode"
    persist=false
    backup_job_backup_begin=+0
else
    silent sleep {{BACKUP_NUMBER}}
    time_last_run=0
    time_current=$(date +'%s')

    if [[ "${backup_job_backup_begin}" =~ ^\+(.*)$ ]]; then
        print_debug "BACKUP_BEGIN is a jump of minute starting with +"
        timer plusvalue
    elif [[ "${backup_job_backup_begin}" =~ ^[0-9]{4}$ ]]; then
        print_debug "BACKUP_BEGIN is a HHMM value"
        timer time
    elif [[ "${backup_job_backup_begin}" =~ ([0-9]{4})-([0-9]{2})-([0-9]{2})[[:space:]]([0-9]{2}):([0-9]{2}):([0-9]{2}) ]]; then
        print_debug "BACKUP_BEGIN is a full date timestamp"
        timer datetime
    elif echo "${backup_job_backup_begin//\*/#}" | grep -qP "^(((\d+,)+\d+|(\d+(\/|-)\d+)|\d+|#) ?){5}$" ; then
        print_debug "BACKUP_BEGIN is a cron expression"
        time_last_run=$(date +"%s")
        timer cron "${backup_job_backup_begin}" "${time_current}" "${time_last_run}"
    else
        print_error "_BACKUP_BEGIN is invalid - Unable to perform scheduling"
        cat <<EOF

        Valid Methods:
          +(number)             - Start in however many minutes
          HHMM                  - Start at hour (00-24) and minute (00-59)
          YYYY-MM-DD HH:mm:ss   - Start at a specific date and time
          0 23 * * *            - Cron expression

EOF
        print_error "Stopping backup_scheduler {{BACKUP_NUMBER}} due to detected errors. Fix and restart container."
        stop_scheduler_backup=true
        s6-svc -d /var/run/s6/legacy-services/dbbackup-{{BACKUP_NUMBER}}
    fi

    print_debug "Wait Time: ${time_wait} Future execution time: ${time_future} Current Time: ${time_current}"
    print_info "Next Backup at $(date -d @"${time_future}" +'%Y-%m-%d %T %Z')"
    silent sleep "${time_wait}"
fi

while true; do
    if [ -n "${backup_job_blackout_start}" ] && [ -n "${backup_job_blackout_finish}" ] ; then
        time_current_hour_minute=$(date +%H%M)
        if [[ "${time_current_hour_minute}" > "${backup_job_blackout_start}" ]] && [[ "${time_current_hour_minute}" < "${backup_job_blackout_finish}" ]] ; then
            blackout=true
        else
            blackout=false
        fi
    fi

    if var_true "${blackout}" ; then
        print_notice "Detected Blackout Period - Not performing backup operations"
    else
        timer job start
        process_limiter
        echo "{{BACKUP_NUMBER}}" >> /tmp/.container/db-backup-backups
        print_debug "Backup {{BACKUP_NUMBER}} routines started time: $(date +'%Y-%m-%d %T %Z')"
        bootstrap_filesystem
        check_availability
        backup_"${dbtype,,}"
        timer job stop
        if [ -z "${exitcode_backup}" ] ; then exitcode_backup="0" ; fi
        print_info "Backup {{BACKUP_NUMBER}} routines finish time: $(date -d @"${backup_job_finish_time}" +'%Y-%m-%d %T %Z') with exit code ${exitcode_backup}"
        print_notice "Backup {{BACKUP_NUMBER}} routines time taken: $(echo "${backup_job_total_time}" | awk '{printf "Hours: %d Minutes: %02d Seconds: %02d", $1/3600, ($1/60)%60, $1%60}')"
        sed -i "/^{{BACKUP_NUMBER}}/d" /tmp/.container/db-backup-backups
    fi

    symlink_log

    if var_false "${persist}" ; then
        print_debug "Exiting due to manual mode"
        exit "${exitcode_backup}";
    else
        if var_true "${stop_scheduler_backup}" ; then
            print_error "Stopping backup_scheduler {{BACKUP_NUMBER}} due to detected errors. Fix and restart container."
            s6-svc -d /var/run/s6/legacy-services/dbbackup-{{BACKUP_NUMBER}}
        else
            if [ ! "${time_cron}" = "true" ]; then
                print_notice "Sleeping for another $(($backup_job_backup_interval*60-backup_job_total_time)) seconds. Waking up at $(date -d@"$(( $(date +%s)+$(($backup_job_backup_interval*60-backup_job_total_time))))" +'%Y-%m-%d %T %Z') "
                silent sleep $(($backup_job_backup_interval*60-backup_job_total_time))
            else
                time_last_run=$(date +"%s")
                timer cron "${backup_job_backup_begin}" "${time_current}" "${time_last_run}"
                print_notice "Sleeping for another ${time_wait} seconds. Waking up at $(date -d@"${time_future}" +'%Y-%m-%d %T %Z') "
                silent sleep "${time_wait}"
            fi
        fi
    fi
done