#!/usr/bin/env miaou-bash

# CONSTANTS

BASEDIR=$(dirname "$0")

# SCENARII

function do_subshell_false {
  echo 'about to subshell error'
  result=$(test ! 1 == 1)
  result=$(false)
}

function do_command_error_multiline {
  miaou-bash <<-EOF
    echo ok
    false
    echo SHOULD NOT APPEAR
EOF
}

function do_subshell_term {

  echo first line.
  # echo -n second line...
  # >&2 echo stderr1
  # grep none none 2>/dev/null
  # echo 'toto' | grep none
  # echo 'toto' | return 3

  echo -n "found1=$(grep nope nope)"
  echo -n "found1=$(false)"
  # echo "found1=$(grep nope nope | grep none)"
  # echo "found2=$(command_not_found)"
  # echo SHOULD NOT SHOW UP!
}

# unable to catch up error when the last command is `!` statement
function do_last_false {
  echo 'last false'
  ! true
}

function do_command_not_found {
  echo START
  command_not_found A B C
  echo SHOULD NOT APPEAR
}

function do_exit {
  echo START
  call_function_which_will_exit
  echo SHOULD NOT APPEAR
}

function do_return {
  should_return
}

function do_return_conditional {
  if call_function_which_will_return; then
    echo SHOULD NOT APPEAR
  else
    echo return is: $?
  fi
  echo SUCCESS
}

function do_unbound_associative {
  declare -A associative
  associative['A']='Abc'

  # this is fine
  [[ -v associative['A'] ]] && echo "${associative['A']}"
  [[ -v associative['B'] ]] && echo "${associative['B']}"

  # this fails
  echo "${associative['B']}"
}

function do_false {
  echo before false
  echo -n 'paragraph...'
  false
  echo after false
}

function do_success {
  echo "count args: $#"
  [[ true != 'false' ]] && echo true
  ! false && echo unfalse
  return
}

function do_exit_0 {
  echo success
  exit 0
  echo SHOULD NOT APPEAR
}

function do_success_with_args {
  echo "count args: $#"
}

function do_unbound_variable {
  a=5
  echo -n "content: "
  # >&2 echo err1
  # echo "content: "
  echo -n "a=${a} b=${b}"
}

function do_source_not_found {
  source "./lib/fake/nope.bash"
}

function do_file_not_found {
  ./lib/fake/nope.bash
}

function do_child_error {
  # . "$BASEDIR/extra/library.bash"
  "$BASEDIR/extra/library.bash"

  echo SHOULD NOT APPEAR
}

function do_command_error {
  >&2 echo nope is not defined!
  grep nope nope
}

# FUNCTIONS

function call_function_which_will_exit {
  exit 99
}

function call_function_which_will_return {
  return 199
}

function F2 {
  echo "stdout A"
  # echo toto >>/tmp/toto
  return
  >&2 echo "This is stderr"

  blabla
  $nope
  exit 6
  grep titi toto
  echo "stdout B"
  echo "stdout C"
  # command_not_found
}

function F1 {
  echo F1
  F2
}

function main {
  F1
  F3
  echo before subshell
  grep nope nope 2>/dev/null
  echo "here in subshell $(grep titi $0)"
  echo NO MORE

  result=$(grep titi $0)
  [[ "$result" -ne 0 ]] && echo true
  # grep titi nope
  >&2 echo some trace in stderr1
  "$BASEDIR/extra/library.bash"
  . "$BASEDIR/lib/utility.bash"
  # . not_found/not_found.bash
  # echo "here in subshell $(grep titi nope)"
  # ls -l nope
  >&2 echo some trace in stderr2
}

function should_return {
  echo A
  if call_function_which_will_return; then
    echo SUCCESS
  else
    echo FAILURE
  fi
  call_function_which_will_return
  echo SHOULD NOT APPEAR
}

function F3 {
  echo F3
  return 0
}

function usage {
  introspect_scenarii
  (
    IFS='|'
    echo "USAGE: $0 <case_scenario>"
  )
  echo -e "\trun a case scenario built from various bash statements and mostly ends up on failure"
  echo -e "\tthese case scenarii provide the help suite needed for \`miaou-bash\`"
  echo -e "\there is the list of available case scenario:"
  local i
  for i in "${SCENARII[@]}"; do
    echo -e "\t- $i"
  done
}

function introspect_scenarii {
  mapfile -t SCENARII <<<"$(compgen -A function | grep ^do_ | sed 's/...//')"
}

function test_contain_item {
  local -n array=$1
  for item in "${array[@]}"; do [[ "$item" == "$2" ]] && return 0; done
  return 1
}

# MAIN

[[ $# -eq 0 ]] && >&2 echo '<case_scenario> required!' && usage && exit 1

scenario="$1"
introspect_scenarii
if test_contain_item SCENARII "$scenario"; then
  shift
  "do_${scenario}" "$@"
else
  (>&2 echo "scenario '${scenario}' not found!" && usage && exit 2)
fi