#!/usr/bin/env bash

#
# Loads an SVN snapshot into an existing repository. This will replace all existing data in that repo.
#

if which tput >/dev/null 2>&1; then
    ncolors=$(tput colors)
fi
if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
    RED="$(tput setaf 1)"
    GREEN="$(tput setaf 2)"
    YELLOW="$(tput setaf 3)"
    BLUE="$(tput setaf 4)"
    MAGENTA="$(tput setaf 5)"
    CYAN="$(tput setaf 6)"
    BOLD="$(tput bold)"
    NORMAL="$(tput sgr0)"
else
    RED=""
    GREEN=""
    YELLOW=""
    BLUE=""
    MAGENTA=""
    CYAN=""
    BOLD=""
    NORMAL=""
fi

error() {
    printf "${BOLD}${RED}$1${NORMAL}\n"
}

set -e

backup_path="$1"
repo_path="$2"

if [[ ($backup_path == "") || ($repo_path == "") ]]; then
    error "Missing args: <backup file path> <svn repo path>"
    exit 1
fi

if [[ ! -f $backup_path ]]; then
    error "Backup file '$backup_path' doesn't exist.\n"
    exit 1
fi

if [[ ! -d $repo_path ]]; then
    error "SVN repo '$repo_path' doesn't exist.\n"
    exit 1
fi

printf "${BOLD}${YELLOW}Loading backup '$backup_path' to '$repo_path'\n"
printf "This will replace all existing data in the repo.\n"
printf "Proceed? (1|y)\n> ${NORMAL}"
read -e proceed
if [[ ! ($proceed == "1" || $proceed == "y") ]]; then
    exit 1
fi

gunzip -c $backup_path | svnadmin load $repo_path