#!/bin/bash
#
# mklastrites
#
# by default works on ~/lastrites-$(date +%Y%m%d), which needs to be
# in the format
#
#   cat/pkg		Real Name <email@gentoo.org>		DD Mon YYYY
#
# (3 fields; can be seperated by tabs or colons, but not spaces)
#
# outputs ~/gentoo/lastrites/lastrites-$(date +%Y%m%d).txt and .xml

source /usr/lib/portage/bin/isolated-functions.sh

CURDATE="$(date +%Y%m%d)"
SRCFILE="${HOME}/lastrites-${CURDATE}"
OUTDIR="${HOME}/gentoo/lastrites"
TMPFILE="$(mktemp -t $(basename $0)-tmp.XXXXXXXX)"


if [[ ! -f "${SRCFILE}" ]]; then
    echo
    eerror "Missing source file - ${SRCFILE}"
    echo
    exit 1
fi

if [[ ! -d "${OUTDIR}" ]]; then
    mkdir -p "${OUTDIR}" || exit 1
fi

filter_src() {
    awk '{ gsub(/\t+/, ":"); print }' "${SRCFILE}" \
        | awk '{ gsub(/^[ \t]+|[ \t]+$/,""); print }' \
        | awk '{ $1 = $1; print }' | awk NF \
        | sort -t ":" -k3.8n -k3.4M -k3n \
        > "${TMPFILE}"
}

output_txt() {
    awk -F: '{ printf "%-30s %-40s %10s\n", $1, $2, $3 }' "${TMPFILE}" \
        > "${OUTDIR}/lastrites-${CURDATE}.txt"
    echo
    einfo "Generated ${OUTDIR}/lastrites-${CURDATE}.txt"
}

output_xml() {
    local lastrite pkg devname devmail rmdate pkguri

    OLDIFS="${IFS}"
    IFS="
"

    echo -e "\n<table>\n\n" \
            "<tr>\n" \
            "<th>Package:</th>\n" \
            "<th>Removal date:</th>\n" \
            "<th>Contact:</th>\n" \
            "</tr>\n\n" \
            > "${OUTDIR}/lastrites-${CURDATE}.xml"

    for lastrite in $(awk '{ print $0 }' "${TMPFILE}"); do
        pkg="$(echo ${lastrite} | awk -F: '{ print $1 }')"
        devname="$(echo ${lastrite} | awk -F: '{ gsub(/ +/," "); sub(/ <[[:alnum:]|[:punct:]]+>/,""); print $2 }')"
        devmail="$(echo ${lastrite} | awk -F: '{ sub(/^.*</,""); sub(/>.*/,""); print $0 }')"
        rmdate="$(echo ${lastrite} | awk -F: '{ print $3 }')"
        pkguri="$(echo $pkg | awk -F/ '{ printf "http://packages.gentoo.org/package/%s/%s", $1, $2 }')"

        echo -e "<tr>\n" \
                "<ti><uri link=\"${pkguri}\">${pkg}</uri></ti>\n" \
                "<ti>${rmdate}</ti>\n" \
                "<ti><mail link=\"${devmail}\">${devname}</mail></ti>\n" \
                "</tr>\n" \
                >> "${OUTDIR}/lastrites-${CURDATE}.xml"

    done

    echo -e "</table>\n" >> "${OUTDIR}/lastrites-${CURDATE}.xml"

    IFS="${OLDIFS}"

    einfo "Generated ${OUTDIR}/lastrites-${CURDATE}.xml"
    echo
}

filter_src
output_txt
output_xml

rm "${TMPFILE}"
mv "${SRCFILE}" "${OUTDIR}"

exit 0