copy move file manager servis linux bash

#!/bin/bash


#GNU bash, version 4.4.20(1)-release (x86_64-pc-linux-gnu)


overwrite_files="yes"
copying_mode="move"
check_period_in_seconds=60
# server PC:
folder_to_monitor="/media/ramdisk/"
# client PC, label of external sd card:
monitor_skip_strings=(extsd)
# my computer location:
backup_root_folder="/media/$(whoami)/"
search_for_folder_to_backup_to="recordings"
file_extensions_to_include="mp3\|flac\|mp4"


function countdown_timer() {
    time_sec=$1
    while [[ 0 -ne $time_sec ]]; do
        echo "$time_sec, waiting... to start"
        time_sec=$[$time_sec-1]
        sleep 1
    done
}

function find_copy_files() {
    src_dir="$1"
    out_dir_root="$2"
    backup_dir="$3"
    search_ext="$4"
    copy_detection=0
    client_detection=0
    out_dir=""
    readarray -t arr_d < <(find "$out_dir_root" -mindepth 1 -maxdepth 1 -type d | sed "s/.*\///" | sort)
    # detect server or client
    for i in "${arr_d[@]}"
    do
        out_dir_loc="$out_dir_root$i/$backup_dir/"
        if [[ -d "$out_dir_loc" ]]; then
            # client detection:
            if [[ $client_detection -eq 0 ]]; then
                for j in "${monitor_skip_strings[@]}"
                do
                    if echo $out_dir_loc | grep -q "$j" ; then
                        client_detection=1
                        break
                    fi
                done
            fi
            if [[ $client_detection -eq 1 ]]; then
                # only one input:
                for j in "${monitor_skip_strings[@]}"
                do
                    if echo $out_dir_loc | grep -q "$j" ; then
                        echo "skipping" > /dev/null
                    else
                        src_dir=$out_dir_loc
                        break
                    fi
                done
                # only one output:
                for j in "${monitor_skip_strings[@]}"
                do
                    if echo $out_dir_loc | grep -q "$j" ; then
                        out_dir=$out_dir_loc
                        break
                    fi
                done
            elif [[ $client_detection -eq 0 ]]; then
                # only one output, first one found:
                for j in "${monitor_skip_strings[@]}"
                do
                    if echo $out_dir_loc | grep -q "$j" ; then
                        echo "skipping" > /dev/null
                    else
                        out_dir=$out_dir_loc
                        break
                    fi
                done
                # input is original, unchanged
            fi
        fi
    done

    echo "source directory: $src_dir"
    echo "backup directory: $out_dir"
    readarray -t arr_f < <(find "$src_dir" -maxdepth 1 -type f -regex '.*\.\('$search_ext'\)$' | sed "s/.*\///" | sort)
    for i in "${arr_f[@]}"
    do
        file_src_loc=$src_dir$i
        file_out_loc=$out_dir$i
        if [[ "$copying_mode" == "copy" ]]; then
            if [[ ! -f "$file_out_loc" ]]; then
                echo "coping file: $file_src_loc"
                cp "$file_src_loc" "$out_dir"
                copy_detection=1
            elif [[ "$overwrite_files" == "yes" && $file_src_loc -nt $file_out_loc ]]; then
                echo "overwriting file: $file_src_loc"
                cp "$file_src_loc" "$out_dir"
                copy_detection=1
            else
                echo "file exists, skipping: $file_out_loc"
            fi
        elif [[ "$copying_mode" == "move" ]]; then
            if [[ ! -f "$file_out_loc" ]]; then
                echo "moving file: $file_src_loc"
                mv -n "$file_src_loc" "$file_out_loc"
                copy_detection=1
            elif [[ "$overwrite_files" == "yes" && $file_src_loc -nt $file_out_loc ]]; then
                echo "moving and overwriting file: $file_src_loc"
                mv -f "$file_src_loc" "$file_out_loc"
                copy_detection=1
            else
                echo "file exists, skipping: $file_out_loc"
            fi
        fi
    done
}

while :
do
    countdown_timer $check_period_in_seconds
    find_copy_files "$folder_to_monitor" "$backup_root_folder" "$search_for_folder_to_backup_to" "$file_extensions_to_include"
    if [[ copy_detection -eq 1 ]]; then
        # sudo apt install speech-dispatcher
        spd-say -t female2 "your grace, backup is done, please praise me..."
        copy_detection=0
    fi
done