#!/bin/bash

# these are for non-spamc setups
SPAM_REPORT="spamassassin --report"
HAM_REPORT="spamassassin --revoke"
SPAM_CHECK="spamassassin -e"

# these are for spamc
SPAM_REPORT="spamc --learntype=spam"
HAM_REPORT="spamc --learntype=ham"
SPAM_CHECK="spamc -c"

if [ "$(basename $0)" = "learn_from_spam" ]; then
    for file in "$@"; do
        if ! formail -c < "$file"|grep -q '^List-Id'; then
            $SPAM_REPORT < "$file" >/dev/null 2>&1;
        fi;
        formail -c < "$file" | grep -e '^From ' -e 'From: ' | spamassassin --add-to-blacklist >/dev/null 2>&1;
        formail -c < "$file" | grep -e '^From ' -e 'From: ' | spamassassin --remove-from-whitelist >/dev/null 2>&1;
        # check to see if it's still spam
        if ! $SPAM_CHECK < "$file" >/dev/null 2>&1; then
            # this message is still not spam; may need custom rules
            spamc < "$file" > ~/Maildir/spam/needs_rules/cur/"$(basename "$file")" 2>/dev/null;
        fi;
    done;
elif [ "$(basename $0)" = "learn_from_ham" ]; then
    for file in "$@"; do
        $HAM_REPORT < "$file" >/dev/null 2>&1;
        formail -c < "$file" |grep -e '^From ' -e 'From: ' -e 'To: ' -e 'Cc: '|spamassassin --add-to-whitelist >/dev/null 2>&1;
        if $SPAM_CHECK < "$file" >/dev/null 2>&1; then
            mkdir -p ~/Maildir/spam/needs_ham_rules/cur;
            spamc < "$file" > ~/Maildir/spam/needs_ham_rules/cur/"$(basename "$file")" 2>/dev/null;
        fi;
    done;
else
    "Called in a way this script cannot recognize";
fi;