#!/bin/bash

# Pull off any 'entry' options
options=()
arguments=()
for arg in "$@"; do
  (( ${#arguments[@]} == 0 )) && [[ "${arg}" =~ ^--.* ]] && {
    options+=(${arg##--})
  } || {
    arguments+=($arg)
  }
done

request=${arguments[0]}
arguments=("${arguments[@]:1}")

commands=(info help version ffmpeg shell)
commands+=(/assets/commands/*)

. /assets/SOLUTION
. /assets/MANIFEST

name() {
  cat << EOF
Intel Accelerated Graphics and Media Access container
Copyright (C) 2019 Intel Corporation
-----
EOF
}

info() {
  HW=$(/assets/agama-hw)
  [ $? ] || {
    HW="None"
  }
  [ "$1" == "--short" ] && {
    echo "Information about running container environment"
  } || {
  cat << EOF
$(name)

Detected base OS: Ubuntu 19.04
Detected hardware: ${HW}
Detected Agama version: ${AGAMA_VERSION}

EOF
  }
}

shell() {
  [ "$1" == "--short" ] && {
    echo "Access container via /bin/bash (similar to --entrypoint /bin/bash)"
  } || {
    (( ${#@} > 0 )) && {
	cmd=$1
	shift
	$cmd "${@}"
        exit $?
    }

    /bin/bash
  }
}

version() {
  [ "$1" == "--short" ] && {
    echo "Show container version information"
  } || {
  cat << EOF
$CONTAINER built using Agama $AGAMA_VERSION.

EOF
  }
}

ffmpeg() {
  [ "$1" == "--short" ] && {
    echo "Run ffmpeg commands."
  } || {
    /usr/local/bin/ffmpeg "${@}"
  }
}

help() {
  [ "$1" == "--short" ] && {
    echo "This help information"
  } || {
  cat << EOF
$(name)

Commands:
EOF
    for cmd in ${commands[@]}; do
      printf "  %-15s  %s\n" ${cmd##*/} "$(${cmd} --short)"
    done
  }

  echo ""
}

badOption() {
cat << EOF
$(name)

Error: Unrecognized option: $1

EOF
  exit 3
}

[[ "${request}" == "" ]] && {
  request="help"
}

[[ " ${commands[@]} " =~ " ${request} " ]] && {
  $request "${arguments[@]}"
  exit $?
}

for option in "${options[@]}"; do
  case $option in
  debug) debug=1
	;;
  *)	unrecognizedOption $option
	;;
  esac
done

[ ! -f /assets/commands/$request ] && {
  echo "'${request}' is not a recognized command."
} || {
  (( $debug )) && {
    /bin/bash -x /assets/commands/$request "${arguments[@]}"
  } || {
    /assets/commands/$request "${arguments[@]}"
  }
  exit $?
}