#!bin/bash

# removing excessive slashes
filepath=$(echo "$1" | tr -s '/')
first_character=$(echo "$filepath"| cut -c1-1)
# could have also added removing the last symbol if it is the slash but did not want to
echo "Filepath: $filepath"

# checking if filepath exists
if [ -f "$filepath" ]; then
    echo "File $filepath exists"
else
    echo "File $filepath does not exist"
    exit
fi

# checking if directory home/trash exists
directory=${HOME}/.trash # directory of .trash
if [ -d $directory ]; then
    echo "Directory $directory exists"
else
    mkdir $directory
    echo "Directory $directory was created"
fi

# getting id for a new link
counter_file="${HOME}/.counter_file"
if ! [[ -f $counter_file ]]; then
    echo "The file $counter_file was created"
    echo "0" > $counter_file
fi
let link_id=$(tail -1 $counter_file)+0
let link_id+=1
echo "$link_id" > $counter_file

# creating a hard link and deleting filepath
link_path=$directory/$link_id
ln "$filepath" "$link_path"
echo "The link $link_path was successfully created"
rm -f "$filepath"
echo "The file $filepath was deleted"

# adding the information of deleted filepath into trash.log
log_file=${HOME}/.trash.log
if ! [ -f $log_file ]; then
    touch $log_file
    echo "File $log_file was created"
fi

if [[ "$first_character" == "/" ]]; then
    echo "$link_id" "$filepath" >> $log_file
else
    echo "$link_id" "${PWD}"/"$filepath" >> $log_file
fi
echo "The information about deleted file $filepath was added to $log_file"