#!/bin/sh

set -e

# ##### Basic functions

log() {
  echo "$@" >&2
}

die() {
  echo "$1" >&2
  exit "$2"
}

# Check that a value matched a given regex.
# Usage: validate '^[a-zA-Z][-a-zA-Z0-9_]$' foo
validate_grep() {
    local value
    local pattern
    pattern="$1"
    value="$2"
    printf '%s\n' "$value" | wc -l | grep ^1$ > /dev/null || return 1
    printf '%s\n' "$value" | grep -- "$pattern" > /dev/null || return 1
    return 0
}

# ##### Argument processing

if [ "$1" = "--help" ]; then
  cat <<EOF
Upload the working directory as an environment in the puppet server
Usage: ./script upload-env my_environment
EOF
  exit 0
fi

env="$1"
validate_grep '^[a-zA-Z][-a-zA-Z0-9_]*$' "$env" || die "Invalid environment name" 1
test "$env" != "production" || die "Please, do not use with the production environment." 1

# ##### Upload the stuff on the server

sources="Gemfile Gemfile.lock modules environment.conf manifests"
path=/srv/puppet/$env/
rsync_opt="-rl --perms --chmod=u+rwX,go+rX --delete --exclude .git*"
puppet_host=zoidberg.newldn

log "Create env on puppet server ($path)"
ssh "$puppet_host" sudo mkdir -p "$path"
ssh $puppet_host 'user=$(whoami) && group=$(id -gn) && sudo chown $user:$group' $path
rsync $rsync_opt $sources "$puppet_host:${path}$dest"