#!/bin/bash
set -e

# Get script name
SCRIPT=$(basename "$0")

# Display Help
Help() {
  echo
  echo "$SCRIPT"
  echo
  echo "Description: Restore docker postgres database."
  echo "Syntax: $SCRIPT [-d|-f|-c|help]"
  echo "Example: $SCRIPT -d odoo -f /tmp/patches/v14.0.1.6.0.sql -c postgres01"
  echo "options:"
  echo "  -d    Name of database."
  echo "  -f    Path to sql patch."
  echo "  -c    Docker container name. Defaults to 'postgres'."
  echo "  help  Show $SCRIPT manual."
  echo
}

# Show help and exit
if [[ "$1" == "help" ]]; then
    Help
    exit
fi

# Process params
while getopts ":c: :d: :f:" opt; do
  case $opt in
    c) CONTAINER="$OPTARG";;
    d) DATABASE="$OPTARG";;
    f) FILE="$OPTARG";;
    \?) echo "Invalid option -$OPTARG" >&2
    Help
    exit;;
  esac
done

# Fallback to environment vars and default values
: ${CONTAINER:='postgres'}

# Verify variables
[[ -z "$FILE" ]] && { echo "Parameter -f|filename is empty" ; exit 1; }
[[ -z "$CONTAINER" ]] && { echo "Parameter -c|container is empty" ; exit 1; }

# Get postgres user
POSTGRES_USER=$(docker exec $CONTAINER bash -c "echo \$POSTGRES_USER")

# Patch database
echo "Patch Postgres database $DATABASE using user $POSTGRES_USER with file $FILE ..."
cat $FILE | docker exec -i $CONTAINER psql -U $POSTGRES_USER -d $DATABASE