#!/bin/bash

###
### nux-runner is environment runner for nux-env enhanced bash scripts
### and provides out of the box support for task-style scripts
### (similar in usage such as apt, git).
###


#    .---------- constant part!
#    vvvv vvvv-- the code from above


readonly NUX_RUNNER=$0;
readonly NUX_RUNNER_BIN_DIR=$(dirname $(realpath  ${BASH_SOURCE[0]}))
source $NUX_RUNNER_BIN_DIR/../inc/nux-base.sh



function is_function () {
  declare -f "$1" &>/dev/null && return 0
  return 1
}

log.debug() {
  :
}

runner.run() {
  TASK=$1; shift; # Determines task
  if is_function task.$TASK ; then
    log.debug "Running task: $TASK";
    task.$TASK "$@" # Runs task
  else
      log.debug "Including script: $NUX_SCRIPT"
      source $NUX_SCRIPT; # Includes script

      if is_function task.$TASK ; then
        log.debug "Running task: $TASK";
        task.$TASK "$@" # Runs task
      else
        echo "$NUX_SCRIPTNAME: Unrecognized task  ''$TASK' not available."
        echo "Try '$NUX_SCRIPTNAME help' for more information."
        exit -1
      fi
  fi
}

##
## Tasks provided by 'nux-runner':


##  debug - Runs specified task with debug messages enabled.
task.debug() {
  log.debug() {
    echo -e "${NC_Debug}[DEBUG] $@ ${NC_No}" >&2
  }
  runner.run "$@"
}

##  help - Shows this help
task.help() {
  echo Usage: $NUX_SCRIPTNAME [task] [options]
  grep "^\#\#\# " $NUX_SCRIPT | cut -d\# -f4-
  echo " Available Tasks: "
  grep "^\#\# " $NUX_SCRIPT | cut -d\# -f3-
  grep "^\#\# " $NUX_RUNNER | cut -d\# -f3-
  echo
}

##

task.() {
  task.help
}

readonly NUX_SCRIPT=$1;
shift; # Determines script
readonly NUX_SCRIPTNAME=$(basename $NUX_SCRIPT)

runner.run "$@"