#!/bin/bash

#
## Installation of self hosted git service Gitea

toolName="gitea"
giteaDownload="https://dl.gitea.io/gitea/1.7.5/gitea-1.7.5-linux-arm-7"
giteaService="https://raw.githubusercontent.com/go-gitea/gitea/master/contrib/systemd/gitea.service"
giteaServiceLoc="/etc/systemd/system/gitea.service"

step_1_info() { echo "Updating apt"; }
step_1() {
  apt update
}

step_2_info() { echo "Downloading $toolName to user home: $giteaDownload"; }
step_2() {
  cd
  wget -O gitea $giteaDownload
  saveReturn $?
  endReturn 
}

step_3_info() { echo "Adding user for $toolName (git:git)"; }
step_3() {
  adduser \
    --system \
    --shell /bin/bash \
    --gecos 'Git Version Control' \
    --group \
    --disabled-password \
    --home /home/git \
    git
  saveReturn $?
  endReturn 
}

step_4_info() { echo "Create required directory structure"; }
step_4() {
  mkdir -p /var/lib/gitea/{custom,data,log}
  chown -R git: /var/lib/gitea/
  chmod -R 750 /var/lib/gitea/
  mkdir /etc/gitea
  chown root:git /etc/gitea
  chmod 770 /etc/gitea
  echo "Copying gitea to global location and making it executable"
  chmod +x ~/gitea 
  cp ~/gitea /usr/local/bin/gitea
  saveReturn $?
  endReturn 
}

step_5_info() { echo "Creating systemd service"; }
step_5() {
  wget -O $giteaServiceLoc  $giteaService
  echo -en "Uncomment needed services mysql (enter to continue): "
  read
  vi $giteaServiceLoc
}

step_6_info() { echo -e "Starting $toolName service\n"; }
step_6() {
  systemctl enable gitea
  systemctl start gitea
  echo "Before proceeding to installation you may need to create a database first with step 10"
  echo
  echo "Goto http://[yourip]:3000/install and complete installation"
  echo
  echo "Afterwards please execute step 20 to secure configuration"
}


step_10_info() { echo -e "Create mysql database for $toolName\n"; }
step_10() {
  local mysqlDatabase
  local mysqlUser
  local mysqlPass

  echo "Existing mysql databases:"
  mysql -u root -e 'SHOW DATABASES;'

  echo -en "Enter database name: " 
  read mysqlDatabase
  endCheckEmpty mysqlDatabase "database name"
  mysql -u root -e 'CREATE DATABASE '$mysqlDatabase' CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;'
  saveReturn $?
  endReturn 

  echo "Existing mysql user:"
  mysql -u root -e 'SELECT User, Host FROM mysql.user;' 
  echo -en "Enter mysql user name: " 
  read mysqlUser
  endCheckEmpty mysqlDatabase "user name"

  echo -en "Enter mysql user password: " 
  read mysqlPass
  endCheckEmpty mysqlPass "password"
  mysql -u root -e 'CREATE USER '"'"$mysqlUser"'"'@'"'"'localhost'"'"' IDENTIFIED BY '"'"$mysqlPass"'"';'
  saveReturn $?
  endReturn 

  mysql -u root -e 'GRANT ALL PRIVILEGES ON '$mysqlDatabase'.* TO '"'"$mysqlUser"'"'@'"'"'localhost'"'"';'
  saveReturn $?
  endReturn 

  mysql -u root -e 'FLUSH PRIVILEGES;'
}

step_20_info() { echo "Secure settings after installation"; }
step_20() {
  chmod 750 /etc/gitea
  chmod 644 /etc/gitea/app.ini
}

# Sequence Revision
VERSION_SEQREV=1

# Workaround when called from different directory
# Not needed when path to sequencer is absolut
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
# Path to sequencer
. ${DIR}/../sequencer/sequencer.sh