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#!/bin/bash
# by: Cody Kochmann
# returns the current session's history
history-session(){
    s1=$(history | cut -c 8-)
    s2=$(cat ~/.bash_history)
    diff  <(echo "$s1" ) <(echo "$s2") | grep "<" | cut -c 3-
}
# generates a random string
gen-password(){
    openssl rand -base64 4096 | openssl dgst -sha256 | sed "s/(stdin)= //g"
}
# runs shellcheck against the current session
shellcheck-session(){
    # generate a file for it to look at
    filepath="/tmp/shellcheck"
    if [ ! -d "$filepath" ]; then mkdir "$filepath" ; fi
    filepath="$filepath/$(gen-password).sh"
    echo "#!/bin/bash" > "$filepath"
    history-session | grep -v 'shellcheck-' >> "$filepath"
    output=$(shellcheck "$filepath")
    if [[ $(cat $filepath | grep . -c) > 1 ]]
    then
        output=$(echo "$output" | grep . | sed -E s'/In \/tmp\/shellcheck\/[a-z0-9]{1,}.sh /on /g')
        if [[ $(echo "$output"|grep . -c) == 0  ]]
        then
            echo "No issues detected!"
        else
            echo "$output"
        fi
    fi
}
# runs chellcheck after every command
shellcheck-start(){
    trap 'shellcheck-session' DEBUG
    echo "shellcheck is now in interactive mode."
}