#!/bin/bash

# The production directory
TARGET="/var/www/friends.of.mineral.town"
# Local (to server) git repository
GIT_DIR="~/mineral.town.git"
# A temporary directory for deployment
TEMP="~/work"
# Name of production branch
BRANCH="main"

while read oldrev newrev ref
do
    # only checking out the deployment branch
    if [ "$ref" = "refs/heads/$BRANCH" ];
    then
        mkdir $TEMP

        echo "Ref $ref received. Deploying ${BRANCH} branch to production..."
        git --work-tree=$TEMP --git-dir=$GIT_DIR checkout -f $BRANCH

        # build blog
        cd $TEMP/blog
        hugo -D

        # Replace production directory with updated project files
        cd ~
        rm -rf $TARGET
        mv $TEMP/ $TARGET/
    else
        echo "Ref $ref received. Doing nothing: only the ${BRANCH} branch may be deployed on this server."
    fi
done