#!/usr/bin/env bash

## -------------------------------------------------------------------
## RUNNING THE SCRIPT FILE FOR DOCKER CONTAINER - TEST / DEVELOP
## docker exec -it loreta_mysql bash -c "cd /opt && ./bin/load_all_dbs.sh -folder=data/bulk_db_load_test"
## -------------------------------------------------------------------


# Configure mysql for further usage
credentialsFile="/opt/bin/mysql-credentials.cnf"
#credentialsFile="/opt/dbmigration/mysql-credentials.cnf"
load_file=""
progress_msg=""
default_db_name=""

# Set passed arguments
for i in "$@"; do
    case $i in
        -file=*|--load_file=*) load_file="${i#*=}" ;;
        *) echo "Unknown parameter passed: $i"; exit 1 ;;
    esac
done

# Show progress bar
function ProgressBar {
  # Process data
  let _progress=(${1}*100/${2}*100)/100
  let _done=(${_progress}*4)/10
  let _left=40-$_done
  # Build progressbar string lengths
  _fill=$(printf "%${_done}s")
  _empty=$(printf "%${_left}s")

  # Then, we come to the “magic” part: “\033[0K\r“. Now, let’s understand what it means step by step:
  #
  # \033  – It’s the escape sequence. In other words, it’s ESC.
  # \033[ – Then this becomes “ESC [“, which is the control sequence introducer (CSI).
  # \033[0k – So it’s “CSI 0 K“. Further, “CSI 0 K” erases the text from the cursor to the end of the line.
  # \r – This is the carriage return. It brings the cursor to the beginning of the line.
  # Therefore, the command echo -ne “Message\033[0K\r” performs the following steps:
  #
  # print “Message“
  # erase everything after “Message“. In other words, it removes the text from the previous output. Now, the cursor is at the end of the line.
  # finally, “\r” moves the cursor back to the beginning
  # In this way, each echo command overwrites the previous message on the same line.
  printf "\rProgress : ${_fill// /█}${_empty// / } | ${_progress} \t$progress_msg\033[0K\r"
  if [ $_progress -eq 100 ]; then
    echo -e
  fi
}

echo "NOTHING TO DO"
exit 1


# Show progress bar
function LoadDatabaseTable {
  _file=(${1})
  _db_title=(${2})

  if [[ -e $_file ]]; then
    # Remove the existing schema if it exists and recreate it
    mysql --defaults-extra-file=$credentialsFile -e "DROP SCHEMA IF EXISTS \`$_db_title\`"
    mysql --defaults-extra-file=$credentialsFile -e "CREATE SCHEMA \`$_db_title\` COLLATE utf8mb4_general_ci"

    # Load dump file
    mysql --defaults-extra-file=$credentialsFile -D "$_db_title" < $_file;
  fi
}

# Check if dir exists
if [ -d "$load_dir" ]; then

  # Setup progressbar
  loaded_files=0
  total_files=$(find "$PWD/$load_dir" -depth -maxdepth 1 -type f -name "*.sql" | wc -l)

  # Loop over each db import file
  for file in $PWD/$load_dir/*.sql; do
    if [[ -e $file ]]; then

      base_file=${file##*/}
      current_db_name="${base_file%.*}"

      # Check if base db exists & if not load elixir_vault_lv db
      if [ $loaded_files -eq 0 ]; then
        progress_msg="LOADING BASE STRUCTURE 'elixir_vault_lv' DB STRUCTURE"
        ProgressBar ${loaded_files} ${total_files}
        # Needs to load base structure for linked view not to throw errors
        LoadDatabaseTable "$(dirname "${file}")/elixir_vault_lv.sql" "elixir_vault_lv"
      fi

      # Continue with the rest of db dump load
      progress_msg="LOADING '$current_db_name' DB STRUCTURE"
      ProgressBar ${loaded_files} ${total_files}
      LoadDatabaseTable ${file} ${current_db_name}

      let loaded_files++
      ProgressBar ${loaded_files} ${total_files}
    fi
  done
  echo -e "DONE;"
  exit 0
fi
echo "NOTHING TO DO"
exit 1