#!/bin/bash
REMOTE_REPOSITORY='origin'
REMOTE_BRANCH='master'
PATH_LIB='/lib/Image'
PROJECTS=( "/var/www/10ballov" "/var/www/predelanet" "/var/www/zelenoemore" "/var/www/d753_common" "/var/www/d753_predelanet" "/var/www/d753_10ballov" )
if [ ! -f "CHANGELOG.md" ]
then
    echo "CHANGELOG.md not exists\n"
    exit 1
fi
test -n "`tail CHANGELOG.md`"
CHANGELOG_EMPTY=`echo $?`
if [ $CHANGELOG_EMPTY == 1 ]
then
    echo -e "CHANGELOG.md is empty\n"
    exit 1
fi
git diff-index --quiet HEAD --
REPO_CHANGED=`echo $?`
if [ $REPO_CHANGED == 1 ]
then
    echo -e "Please commit all changes in repository\n"
    exit 1
fi
VERSION_PREVIOUS=`sed -n '4,4p' CHANGELOG.md | cut -d "(" -f1 | tr -d ' '`
if [ `git rev-parse ${VERSION_PREVIOUS}` != `git rev-parse HEAD` ]
then
    VERSION=`echo ${VERSION_PREVIOUS} | awk -F. -v OFS=. 'NF==1{print ++$NF}; NF>1{if(length($NF+1)>length($NF))$(NF-1)++; $NF=sprintf("%0*d", length($NF), ($NF+1)%(10^length($NF))); print}'`
    git tag "$VERSION" &&
    gitchangelog > CHANGELOG.md &&
    {
        git add CHANGELOG.md >/dev/null &&
        git commit -m "Update CHANGELOG.md" > /dev/null &&
        git tag -d "$VERSION" >/dev/null &&
        git tag "$VERSION" >/dev/null &&
        git push "${REMOTE_REPOSITORY}" --tags >/dev/null 2>/dev/null
    } || {
        echo -e "Cannot push released tag into remote repository\n"
        exit 1
    }
else
    VERSION=$VERSION_PREVIOUS
fi
git push "${REMOTE_REPOSITORY}" HEAD:"${REMOTE_BRANCH}" >/dev/null || exit 1

MESSAGE="Update ${PATH_LIB} on ${VERSION}"
CURRENT_DIR=`pwd`
for project in "${PROJECTS[@]}"
do
    echo -e "Update lib for ${project}...\n"
    {
        cd "${project}${PATH_LIB}" &&
        git fetch "${REMOTE_REPOSITORY}" >/dev/null 2>/dev/null &&
        git checkout "$VERSION" 2>/dev/null;
    } || {
        echo -e "Failed to checkout lib on tag ${VERSION}\n" &&
        exit 1;
    }

#    cd "${project}"
#    LIB_DIR=`echo ${PATH_LIB#'/'}`
#    git diff-index --quiet HEAD "$LIB_DIR"
#    LIB_NEW_COMMITS=`echo $?`
#    if [ $LIB_NEW_COMMITS == 1 ]
#    then
#        {
#        git reset >/dev/null &&
#        git add "$LIB_DIR" >/dev/null &&
#        git commit -m "$MESSAGE" >/dev/null
#        } || {
#            echo -e "Failed to update lib for ${project}\n"
#            exit 1
#        }
#        if [ $project == "/var/www/d753_common" ]
#        then
#            {
#                git push origin master > /dev/null &&
#                cd /var/www/d753_predelanet/ && ./merge-from-master.sh > /dev/null
#                cd /var/www/d753_10ballov/ && ./merge-from-master.sh > /dev/null
#            } || {
#                echo -e "Failed to update dependency d753 branches... Please resolve that problem by hand\n"
#                exit 1
#            }
#        fi
#    else
#        echo -e "Already update\n"
#    fi
done

echo -e "All operations succeed\n"
exit 0