init

#!/bin/bash

source_directory=$(dirname "${BASH_SOURCE[0]}")
configuration_file_path="$source_directory/database-backup.config"
database_backups_path_default="$HOME/database-backups"
keep_for_days_default=10

function init_configuration_file {
  if [ -n "$DATABASE_BACKUPS_PATH" ]; then
    database_backups_path=${DATABASE_BACKUPS_PATH}
  else
    read -r -p "Enter the database backups storage directory path [$database_backups_path_default]: " input_path_backups
    database_backups_path=${input_path_backups:-$database_backups_path_default}
  fi

  if [ -n "$DATABASE_BACKUPS_KEEP_FOR_DAYS" ]; then
    keep_for_days=${DATABASE_BACKUPS_KEEP_FOR_DAYS:-$keep_for_days_default}
  else
    read -r -p "Number of days to keep the backups for [$keep_for_days_default]: " input_keep_for_days
    keep_for_days=${input_keep_for_days:-$keep_for_days_default}
  fi

  {
      echo "DATABASE_BACKUPS_PATH=$database_backups_path"
      echo "DATABASE_BACKUPS_KEEP_FOR_DAYS=$keep_for_days"
  } > "$configuration_file_path"
  echo "Configuration saved to $configuration_file_path"
}

function init_my_cnf {
  my_cnf_path="$HOME/my.cnf"
  touch "$my_cnf_path"
  chmod 0600 "$my_cnf_path"

  if ! grep -q "[client]" "$my_cnf_path"; then
      if [ -n "$DATABASE_BACKUPS_USERNAME" ]; then
          username="$DATABASE_BACKUPS_USERNAME"
      else
          read -r -p "Username: " username
      fi

      if [ -n "$DATABASE_BACKUPS_PASSWORD" ]; then
          password="$DATABASE_BACKUPS_PASSWORD"
      else
          read -r -s -p "Password: " password
      fi

      {
          echo "[client]"
          echo "user=$username"
          echo "password=\"$password\""
      } >> "$my_cnf_path"

      echo ""
      echo "Database credentials saved to $my_cnf_path"
  fi
}

init_configuration_file && init_my_cnf