#!/bin/bash -e

export PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'

export BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

export IMG_NAME='BarnacleOS'
export USERNAME='user'
export PASSWORD='password'

export DEPLOY_DIR="$BASE_DIR/deploy"
export ROOTFS_DIR="$BASE_DIR/rootfs"
export KEYS_DIR="$BASE_DIR/keys"
export FILES_DIR="$BASE_DIR/files"

export IMG_DATE="$(date +%Y-%m-%d)"

export IMG_FILE="$DEPLOY_DIR/$IMG_NAME-${IMG_DATE}.img"

# dependencies_check
# $@ Dependnecy files to check
#
# Each dependency is in the form of a tool to test for, optionally followed by
# a : and the name of a package if the package on a Debian-ish system is not
# named for the tool (i.e., qemu-user-static).
dependencies_check() {
  local missing

  if [[ -f "$1" ]]; then
    for dep in $(cat "$1"); do
      if ! hash ${dep%:*} 2>/dev/null; then
        missing="${missing:+$missing }${dep#*:}"
      fi
    done
  fi

  if [[ "$missing" ]]; then
    tput setaf 1 # Red color
    echo 'Reqired dependencies not installed.'
    echo 'This can be resolved on Debian/Raspbian systems by installing the following packages:'
    for package_name in $missing; do
      echo "  * $package_name"
    done
    tput sgr0 # No color

    false
  fi
}

dependencies_check "$BASE_DIR/depends"

cd "$BASE_DIR"

mkdir -p "$DEPLOY_DIR"

exec bash -e $@