#!/bin/bash

# This script will let you upload sources/blobs to new CentOS lookaside cache
# requirements:
#  - curl
#  - valid TLS certs from https://accounts.centos.org (or dev instance for testing)
#  - valid group membership to let you upload to specific "branch"

# Some variables, switch for new url
lookaside_baseurl="https://git.centos.org"

function usage {

cat <<  EOF

You need to call the script like this : $0 -arguments

        -f : filename/source to upload (required, default:none)
        -n : package name for that source (requred, default:none, example "httpd")
        -b : "branch" where to upload to (required, default:none, example "c7-sig-core")
        -h : display this help

EOF

}

function varcheck {
if [ -z "$1" ] ; then
        usage
        exit 1
fi

}

function f_log {
  echo "[+] CentOS Lookaside upload tool -> $*"
}



while getopts “hf:n:b:” OPTION
do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         f)
             file=$OPTARG
             ;;
         n)
             pkgname=$OPTARG
             ;;
         b)
             branch=$OPTARG
             ;;
         ?)
             usage
             exit
             ;;
     esac
done

varcheck $file
varcheck $pkgname
varcheck $branch

if [ ! -f ~/.centos.cert ] ;then
  f_log "No mandatory TLS cert found (~/.centos.cert) .."
  f_log "please use centos-cert to retrieve your ACO TLS cert"
  exit 1
fi

if [ ! -f "${file}" ] ;then
  f_log "Source to upload ${file} not found"
  exit 2
fi

checksum=$(sha1sum ${file}|awk '{print $1}')

f_log "Checking if file already uploaded"
local_size=$(stat -c %s ${file})
remote_size=$(curl --silent -i --head ${lookaside_baseurl}/sources/${pkgname}/${branch}/${checksum}|grep "Content-Length"|cut -f 2 -d ':'|tr -d [:blank:]|tr -d '\r')
if [ "$local_size" -eq "$remote_size" ] ; then
  f_log "File already uploaded"
  exit 3
fi

f_log "Initialing new upload to lookaside"
f_log "URL : $lookaside_baseurl"
f_log "Source to upload : ${file} "
f_log "Package name: $pkgname"
f_log "sha1sum: ${checksum}"
f_log "Remote branch: ${branch}" 
f_log " ====== Trying to upload ======="
echo ""
curl ${lookaside_baseurl}/sources/upload.cgi \
	--fail \
	--cert ~/.centos.cert \
	--form "name=${pkgname}" \
	--form "branch=${branch}" \
	--form "sha1sum=${checksum}" \
	--form "file=@${file}" \
	--progress-bar | tee /dev/null

upload_result="${PIPESTATUS[0]}"

if [ "$upload_result" -ne "0" ] ;then
  f_log "[ERROR] Something didn't work to push to ${lookaside_baseurl}/sources/${pkgname}/${branch}/${checksum}"
  f_log "[ERROR] Verify at the server side"
  exit 1
fi

f_log "Validating that source was correctly uploaded ...."
remote_size=$(curl --silent -i --head ${lookaside_baseurl}/sources/${pkgname}/${branch}/${checksum}|grep "Content-Length"|cut -f 2 -d ':'|tr -d [:blank:]|tr -d '\r')
if [ "$local_size" -eq "$remote_size" ] ; then
  f_log "[SUCCESS] Source should be available at ${lookaside_baseurl}/sources/${pkgname}/${branch}/${checksum}"
else
  f_log "[ERROR] it seems there is a mismatch with source size and remote file size"
fi