#!bin/bash

# check if the input is correct
if [[ "$1" =~ "/" ]]; then
    echo "Input file can't contain '/' character"
    exit
fi

tmp=${HOME}/.tmp
touch $tmp
log_file=${HOME}/.trash.log
mapfile -t array < $log_file
file_was_found=false
for line in "${array[@]}"; do
    filename=$(echo "$line" | awk -F "/" '{ print $NF }') # { print $NF } prints the last column with delimeter "/"
    # echo "Line $line"
    # echo "Filename: $filename"
    if [ "$filename" == "$1" ]; then
        file_was_found=true
        link_id=$(echo "$line" | awk '{ print $1 }')
        line_length=`expr length "$line"`
        link_id_length=`expr length "$link_id"`
        let link_id_length_plus_two=$link_id_length+2
        link_path=$(echo "$line" | cut -c$link_id_length_plus_two-$line_length)
        echo "Would you like to restore the following file: $link_path? [y/n]"
        read answer
        case "$answer" in
            y)
                file_length=`expr length "$1"`
                link_path_length=`expr length "$link_path"`
                let directory_length=$link_path_length-$file_length
                directory=$(echo "$link_path" | cut -c1-$directory_length)
                old_path=${HOME}/.trash/$link_id
                if [ -d "$directory" ]; then
                    echo "Directory $directory exists"
                    ln "$old_path" "$link_path"
                    echo "The file was successfully restored into the directory $directory"
                else
                    echo "Directory $directory does not exist"
                    ln "$old_path" "${HOME}"
                    mv "${HOME}/$link_id" "${HOME}/$filename"
                    echo "The file was successfully restored into the ${HOME} directory"
                fi
                rm -f "$old_path"
                echo "The link in the trash was deleted"
                ;;
            *)
                echo "The file $link_path will not be restored"
                echo "$line" >> $tmp
                ;;
        esac
    else
        echo "$line" >> $tmp
    fi
done
if [[ $file_was_found = false ]]; then
    echo "File was not found!"
fi
cat $tmp > $log_file
rm -f $tmp