#!/bin/bash
PATH="/usr/local/bin:/usr/bin:/bin"
upurl="https://api.github.com/repos/go-gitea/gitea/releases/latest"
despa="${HOME}/temp/gitea_update"
exdir="/gitea"
exdir_update="${exdir}/update"
expa="${exdir}/gitea"
reltag=""
pushovermsg=""
rtcode=0
latest_curl=""
giteaname=""
giteauser="gitea"

function cleanup() {
    /bin/rm -rf "${despa}"
    sudo /bin/rm -f "${exdir_update}/"gitea*linux-amd64* >/dev/null 2>&1
}

trap cleanup EXIT SIGHUP SIGINT SIGTERM

sendpushover() {
    /home/suchademon/VersionControl/pushover/pushover.sh -d maindevices -t gitea -A notifyDeamon "$1" &
}

/bin/mkdir -p ${despa}  >/dev/null 2>&1 || exit 2
latest_curl=$(/usr/bin/curl -s "${upurl}")
reltag=$(/usr/bin/jq -r '.name' <<<"${latest_curl}" | sed -e 's/^v//g')

if /usr/bin/sudo ${expa} --version | grep -q "Gitea version ${reltag} " ; then
    echo "Upstream version same as local binary ${reltag}"
    exit 0
fi

giteaname="gitea-${reltag}-linux-amd64"
dlpath=$(/usr/bin/jq -r '.assets|.[].browser_download_url' <<<"${latest_curl}" | grep -E "linux.amd64.sha256$" )
if /usr/bin/wget "${dlpath}" --output-document "${despa}/${giteaname}.sha256" >/dev/null 2>&1 ; then
    echo "downloaded gitea-${reltag} sha256 sum"
    dlpath=$(/usr/bin/jq -r '.assets|.[].browser_download_url' <<<"${latest_curl}" | grep -E "linux.amd64$" )
    if /usr/bin/wget "${dlpath}" --output-document "${despa}/${giteaname}" >/dev/null 2>&1 ; then
        echo "downloaded gitea-${reltag} binary"
        if [ "$(/bin/cat "${despa}/${giteaname}.sha256" | /usr/bin/awk '{print $1}')" != "$(/usr/bin/sha256sum "${despa}/${giteaname}" | /usr/bin/awk '{print $1}')" ]; then
            sendpushover "SHA256 of gitea-${reltag} do not match .sha256 file\n-------------------------------------\n$(/bin/cat "${despa}/${giteaname}.sha256")\n$(/usr/bin/sha256sum ""${despa}/${giteaname}"")"
            exit 1
        fi
        echo "new gitea-${reltag} sum checked ok"
        echo "comparing gitea sum new with running version"
        if [ "$(/usr/bin/sudo /usr/bin/sha256sum ${expa} | /usr/bin/awk '{print $1}')" != "$(/usr/bin/sha256sum "${despa}/${giteaname}" | /usr/bin/awk '{print $1}')" ]; then
            echo "new version detected"
            echo "move gitea-${reltag} to update dir"
            if sudo /usr/bin/mv "${despa}/${giteaname}.sha256" "${exdir_update}/${giteaname}.sha256" >/dev/null 2>&1 ; then
                if sudo /usr/bin/mv "${despa}/${giteaname}" "${exdir_update}/${giteaname}" ; then
                    if sudo /usr/bin/chown ${giteauser}. "${exdir_update}/gitea-${reltag}"* >/dev/null 2>&1 ; then
                        if ! sudo /usr/bin/chmod 700 ${giteauser} "${exdir_update}/gitea-${reltag}"* >/dev/null 2>&1 ; then
                            echo "failed to change mod gitea-${reltag} update files"
                            exit 1
                        fi
                    else
                        echo "failed to chown gitea-${reltag} update files"
                        exit 1
                    fi
                else
                    echo "failed to move gitea-${reltag} binary to update dir"
                    exit 1
                fi
            else
                echo "failed to move gitea-${reltag} sha256 to update dir"
                exit 1
            fi
            echo "try to deploy new gitea version"
            if pushovermsg="$(/usr/bin/sudo ${exdir_update}/update_gitea.sh -p -n "${exdir_update}/${giteaname}")" ; then
                pushovermsg="gitea ${reltag} available on github (autodeploy) \n${reltag}\n${pushovermsg}\nAutodeploy finished, version live"
            else
                pushovermsg="gitea ${reltag} available on github, auto deploy did not work\n-------------------------------------\n${pushovermsg}\nCopied files to gitea-update dir"
            fi
        fi
    else
        pushovermsg="Could not download ${dlpath}"
        rtcode=1
    fi
else
    pushovermsg="Could not download ${dlpath}"
    rtcode=1
fi

sendpushover "${pushovermsg}"
exit ${rtcode}