#!/bin/bash


#############################################
#############     Functions     #############
#############################################

cleanup(){
    if [ -d $TMP_DIR ]; then
        rm -rf $TMP_DIR
    fi
}

#############################################
#############   Functions END   #############
#############################################

echo "Check the requirements"

if [ -z $CI ];then
    echo "This Script needs to be run by CI"
fi
if [ -z $CIRCLECI ];then
    echo "This Script needs to be run on CircleCI"
fi
if [[ "${CIRCLE_PROJECT_USERNAME}" != "navit-gps" || "${CIRCLE_BRANCH}" != "trunk" ]]; then
    echo "Only trunk on navit-gps may upload to the Download Center"
    exit 0
fi

#############################################

echo "Setting up all Variables"

UUID=${RANDOM}-${RANDOM}-${RANDOM}-${RANDOM}
TMP_DIR=$(mktemp -d)
CIRCLECI_API_BASE="https://circleci.com/api/v1.1/"
NAVIT_DOWNLOAD_CENTER_REPO="git@github.com:navit-gps/download-center"

# To keep it generic
CVS_TYPE="github"
REPONAME=$CIRCLE_PROJECT_REPONAME
USERNAME=$CIRCLE_PROJECT_USERNAME
BUILD_NUM=$CIRCLE_BUILD_NUM
JOB_NAME=$CIRCLE_JOB

# Build all api urls
URL_BUILD_ARTIFACTS="${CIRCLECI_API_BASE}project/${CVS_TYPE}/${USERNAME}/${REPONAME}/${BUILD_NUM}/artifacts"
echo "Artifact URL: $URL_BUILD_ARTIFACTS"

#############################################

echo "Setup trap for cleanup"
trap cleanup EXIT

#############################################

echo "Init Git Repo"
export GIT_TERMINAL_PROMPT=0
cd $TMP_DIR
mkdir -p ~/.ssh/
ssh-keyscan -t rsa github.com >> ~/.ssh/known_hosts
git clone $NAVIT_DOWNLOAD_CENTER_REPO $UUID
if [ ! -d $UUID/_data/$JOB_NAME ]; then
    mkdir -p $UUID/_data/$JOB_NAME
fi
cd $UUID/_data/$JOB_NAME

#############################################

echo "Download metadata of this build"
wget --no-check-certificate $URL_BUILD_ARTIFACTS -O $(printf "%010d" ${BUILD_NUM}).json
RC=$?
if [ $RC -ne 0 ]; then
    echo "wget artifacts download failed"
    exit 1
fi

#############################################

echo "Push update to ${NAVIT_DOWNLOAD_CENTER_REPO}"
git config --global push.default simple
git config user.name "Circle CI"
git config user.email "circleci@navit-project.org"
git add $(printf "%010d" ${BUILD_NUM}).json
git commit -m "add:artifacts:Add artifacts for build #${BUILD_NUM} with SHA1:${CIRCLE_SHA1}"
git push
RC=$?
if [ $RC -ne 0 ]; then
    exit 0
else
    echo "Push to ${NAVIT_DOWNLOAD_CENTER_REPO} was not successful update repo and try again..."
    for NUM in {1..10}; do
        echo "Retry #${NUM} to push to github"
        git pull
        git push
        RC=$?
        if [ $RC -eq 0 ]; then
            exit 0
        fi
        sleep $(($RANDOM%5)) # sleep between 1 and 5 seconds
    done
fi

echo "Failed to push to github"
exit 100