#!/bin/sh

# variables
shell_arguments=$1
giteadownloader_default="https://dl.gitea.io/gitea/1.16/gitea-1.16-linux-amd64"
myIP="$(/sbin/ip -o -4 addr list eth0 | awk '{print $4}' | cut -d/ -f1)"
pwd="$(pwd)"
dbuser="giteauser"
dbpassword=$(date +%s | sha256sum | base64 | head -c 32)
dbtable="giteadb"

if [[ "$shell_arguments" == "--github-ci-test" ]]; then
  run_ci_tests=1
else
  run_ci_tests=0
fi

echo ""
echo ""
echo "  Gitea installer & updater"
echo "-------------------------------------------------------------------------"
echo ""

sleep 3s

if [[ run_ci_tests == 1 ]]; then

  giteadownloader="${giteadownloader_default}"

else

  echo "Define your downloadpath. Otherwise I use: ${giteadownloader_default}"
  read -p "-> " giteadownloader
  if [[ -z ${giteadownloader} ]]; then
    giteadownloader="${giteadownloader_default}"
  fi
  echo "You choose: ${giteadownloader}"

fi

echo ""
echo ""
echo "//-->> Update"
apt-get update -q >> /dev/null 2>&1
apt-get upgrade -q -y >> /dev/null 2>&1

echo "//-->> Install packages"
apt-get install git mariadb-server mariadb-client nano -q -y >> /dev/null 2>&1

echo "//-->> Create user: git"
adduser --system --shell /bin/bash --gecos 'Git Version Control' --group --disabled-password --home /home/git git >> /dev/null 2>&1
cd /home/git/

echo "//-->> Download Gitea"
wget -q $giteadownloader -O gitea >> /dev/null 2>&1
chmod +x gitea

echo "//-->> Create important folder"
mkdir -p /var/lib/gitea/custom
mkdir -p /var/lib/gitea/data
mkdir -p /var/lib/gitea/data/lfs
mkdir -p /var/lib/gitea/log
chown -R git:git /var/lib/gitea
chmod -R 750 /var/lib/gitea/
mkdir /etc/gitea
chown root:git /etc/gitea
chmod 770 /etc/gitea

# insert gitea user
echo "//-->> Prepare database"
mysql -e "CREATE USER '$dbuser'@'localhost' IDENTIFIED BY '$dbpassword';"
mysql -e "CREATE DATABASE $dbtable;"
mysql -e "GRANT ALL PRIVILEGES ON $dbtable . * TO '$dbuser'@'localhost';"
mysql -e "FLUSH PRIVILEGES;"

# set system variables
echo "//-->> Set system variables"
export GITEA_WORK_DIR=/var/lib/gitea/ >> /dev/null 2>&1

echo "//-->> Copy Gite to: /usr/local/bin/gitea (replace binary to upgrade.)"
mv gitea /usr/local/bin/gitea

# set gitea service
echo "//-->> Create gitea-service"
cp "$pwd/config/gitea-service.txt" "/etc/systemd/system/gitea.service"
systemctl enable gitea >> /dev/null 2>&1
service gitea start >> /dev/null 2>&1

if [[ run_ci_tests == 0 ]]; then

  while true; do
    read -p "Do you want to secure your mysql-installation? [Y/n]" yn
    case $yn in
      [Yy]* ) mysql_secure_installation; break;;
      [Jj]* ) mysql_secure_installation; break;;
      [Nn]* ) break;;
      * ) echo "ERROR! Please answer with [Y/n]";;
    esac
  done

fi

# gitea-auto-update
echo "//-->> Create gitea-updater cronjob"
apt-get install python3 python3-pip -q -y >> /dev/null 2>&1
pip3 install gitea-auto-update >> /dev/null 2>&1

mkdir /home/git/update
echo "[Gitea]
site=http://127.0.0.1:3000/api/v1/version
apiUrl=https://api.github.com/repos/go-gitea/gitea/releases/latest
system=linux-amd64
file=/usr/local/bin/gitea
tmpDir=/tmp/
buildFromSource=
sourceDir=
logFile=/var/log/update.log" > /home/git/update/settings.ini

crontab -l > giteaupdater
echo "0 4 * * 1 /usr/local/bin/gitea-auto-update --settings=/home/git/update/settings.ini >/dev/null 2>&1" >> giteaupdater
crontab giteaupdater
rm giteaupdater

# after install commands
chmod 750 /etc/gitea
chmod 660 /etc/gitea/app.ini

echo ""
echo ""
# output install
echo "##########################################################################"
echo "Gitea was installed successfully!"
echo "Now, open your browser and visit: http://$myIP:3000"
echo ""
echo "--- Database ---"
echo "username: $dbuser"
echo "password: $dbpassword"
echo "database: $dbtable"
echo ""
echo "--- Gitea Settings ---"
echo "Gitea Repositorie dir: /home/git/gitea-repositories"
echo ""
echo "##########################################################################"
echo "Have fun :)"