#!/bin/bash

# Show and exit on errors
set -e

# Get azk root path
abs_dir() {
  cd "${1%/*}"; link=`readlink ${1##*/}`;
  if [ -z "$link" ]; then pwd; else abs_dir $link; fi
}

export AZK_ROOT_PATH=`cd \`abs_dir ${BASH_SOURCE:-$0}\`/..; pwd`

# Namespace and domain
export AZK_NAMESPACE=${AZK_NAMESPACE:-azk.dev}
export AZK_BALANCER_HOST=${AZK_BALANCER_HOST:-$AZK_NAMESPACE}

# Default namespace use a data root path
data_namespace="/ns/${AZK_NAMESPACE}";
if [ "${AZK_NAMESPACE}" == "azk.dev" ]; then
  data_namespace="";
fi

# Base folders
export AZK_DATA_PATH=${AZK_DATA_PATH:-$HOME/.azk/data$data_namespace} # sockets, data disks and logs
export AZK_LIB_PATH=${AZK_LIB_PATH:-$AZK_ROOT_PATH/lib};              # transpiled files from src and node runtime
export AZK_NPM_PATH=${AZK_NPM_PATH:-$AZK_ROOT_PATH/node_modules};     # package dependencies

# Nvm paths and configs
node_version=`cat $AZK_ROOT_PATH/.nvmrc`
export NVM_DIR=$AZK_LIB_PATH/nvm
export AZK_NODE_PATH=${AZK_NODE_PATH:-$NVM_DIR/$node_version/bin}

# Node load paths
export NODE_PATH=$NVM_DIR/$node_version/node_modules
export NODE_PATH=$AZK_ROOT_PATH:$NODE_PATH
export NODE_PATH=$AZK_NPM_PATH:$NODE_PATH
export NODE_PATH=$AZK_LIB_PATH:$NODE_PATH

# Extra path
export PATH=$AZK_NODE_PATH:$PATH
export PATH=$AZK_NPM_PATH/.bin:$PATH

# No use DOCKER_HOST
unset DOCKER_HOST

make_data_folders() {
  data_folders=(
    "$NVM_DIR"
    "$AZK_DATA_PATH"
    "$AZK_DATA_PATH/ns"
    "$AZK_DATA_PATH/run"
    "$AZK_DATA_PATH/vm"
    "$AZK_DATA_PATH/nvm"
    "$AZK_DATA_PATH/logs"
  )

  for dir in "${data_folders[@]}"; do
    [ -d "$dir" ] || mkdir -p $dir
  done

  # Clean old install azk versions files (<0.6.0)
  (
    cd $AZK_DATA_PATH;
    rm -Rf vm/*.tmp vm/*.iso vm/*.bz vm/*.sha
  )
}

azk_load_nvm() {
  if ! $AZK_NODE_PATH/node --version &>/dev/null ; then
    echo "node not installed";
    echo "run: make -e bootstrap";
    exit 1;
  fi
}

azk_node_run() {
  exec $AZK_NODE_PATH/node --harmony $AZK_ROOT_PATH/bin/azk.js "${@}"
}

npm() {
  exec $AZK_NODE_PATH/npm --cache=${AZK_DATA_PATH}/nvm/cache ${@}
}

azk_main() {
  make_data_folders
  case "$1" in
    nvm)
      shift; "${@}"
      ;;
    *)
      azk_load_nvm
      azk_node_run "${@}"
  esac
}

# run main function
azk_main "${@}"