#!/bin/bash

set -e
set -u

export APPSH_HOME=$(cd $(dirname "$0")/.. && pwd)

. $APPSH_HOME/lib/common
# HEADER END

usage_text() {
  echo "usage: $usage_app [-s group.name=value] -d dir <resolver> <resolver args>"
}

dir=
prepend_config=
append_config=
declare -A conf
conf=()
while getopts "d:C:c:s:" opt
do
  case $opt in
    d)
      dir=$OPTARG
      shift 2
      OPTIND=1
      ;;
    C)
      prepend_config=$OPTARG
      if [[ ! prepend_config =~ ^/ ]]
      then
        prepend_config="`pwd`/$prepend_config"
      fi
      shift 2
      OPTIND=1
      ;;
    c)
      append_config=$OPTARG
      if [[ ! append_config =~ ^/ ]]
      then
        append_config="`pwd`/$append_config"
      fi
      shift 2
      OPTIND=1
      ;;
    s)
      keyvalue=$OPTARG
      re="^$key_expr\\.$key_expr=.*$"
      if [[ ! $keyvalue =~ $re ]]
      then
        usage "Invalid -s argument."
      fi
      key="${keyvalue%%=*}"
      value="${keyvalue#*=}"
      conf[$key]="$value"
      shift 2
      OPTIND=1
      ;;
  esac
done

if [ $# -lt 1 ]
then
  usage
fi

resolver_name="$1"; shift

if [ -z "$dir" ]
then
  usage "-d is required"
fi

if [ -e "$dir" ]
then
  fatal "Already initialized: $dir" 2>&1
fi

resolver=`find_resolver "$resolver_name"`

if [ -z "$resolver" ]
then
  echo "No such resolver: $resolver_name" 2>&1
  exit 1
fi

mkdir -p -- "$dir" "$dir/.app"

ok=no
clean_dir=`cd "$dir" && pwd`
trap '[[ $ok == yes ]] || rm -rf "$clean_dir"' EXIT

cd "$dir"

for key in "${!conf[@]}"
do
  app-conf set $key "${conf[$key]}"
done
unset IFS

app-conf set app.resolver "$resolver_name"

"$resolver" init "$@"
"$resolver" resolve-version

resolved_version=`app-conf get app.resolved_version`

if [[ $resolved_version == "" ]]
then
  echo "Unable to resolve version" 2>&1
  exit 1
fi

echo "Resolved version to $resolved_version"

"$resolver" download-version -v "$resolved_version" -f .app/latest.zip

app-install-file \
    -v "$resolved_version" \
    ${prepend_config:+-C "$prepend_config"} \
    ${append_config:+-c "$append_config"} \
    -f .app/latest.zip

ok=yes