#!/bin/bash

#
## Installation of 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"

function step_1 {
  echo -e "Updating apt\n"
  apt update
}

function step_2 {
  echo -e "Downloading $toolName to user home: $giteaDownload\n"
  cd
  wget -O gitea $giteaDownload
  saveReturn $?
  endReturn 
}

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

function step_4 {
  echo -e "Create required directory structure"
  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 
}

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

function step_6 {
  echo -e "Starting $toolName service"
  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"
}



function step_10 {
  local mysqlDatabase
  local mysqlUser
  local mysqlPass

  echo "Setup mysql database"
  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;'
}

function step_20 {
  echo -e "Secure settings after installation"
  chmod 750 /etc/gitea
  chmod 644 /etc/gitea/app.ini
}

help() {
  echo    "  $toolName Documentation"
  echo    "    1: Updating apt"
  echo    "    2: Downloading $toolName to user home: $giteaDownload"
  echo    "    3: Adding user for $toolName (git:git)"
  echo    "    4: Create required directory structure"
  echo    "    5: Creating systemd service"
  echo    "    6: Starting $toolName service"
  echo
  echo    "   10: Setup mysql database" 
  echo
  echo    "   20: Secure settings after installation"
  echo
}


#
## Path to sequencer
. ../sequencer/sequencer.sh