#!/usr/bin/env bash
#
# mftest [name] [index]
#
# Set configuration options based on a test
# By default it will do megaatmega2560
# Use 'mftest -' to pick from the list.
#

MFINFO=$(mfinfo) || exit 1
[[ -d Marlin/src ]] || { echo "Please 'cd' up to repo root." ; exit 1 ; }

TESTPATH=buildroot/share/tests
STATE_FILE=$( echo ./.pio/.mftestrc )

shopt -s extglob nocasematch

# Get the environment and test number from the command
TESTENV=${1:-'-'}
CHOICE=${2:-0}

# Allow shorthand for test name
case $TESTENV in
    tree) platformio run --project-dir . -e include_tree ; exit 1 ;;
     due) TESTENV='DUE' ;;
     esp) TESTENV='esp32' ;;
    lin*) TESTENV='linux_native' ;;
 lpc?(8)) TESTENV='LPC1768' ;;
    lpc9) TESTENV='LPC1769' ;;
    m128) TESTENV='megaatmega1280' ;;
    m256) TESTENV='megaatmega2560' ;;
    mega) TESTENV='megaatmega2560' ;;
     stm) TESTENV='STM32F103RE' ;;
     f1)  TESTENV='STM32F103RE' ;;
     f4)  TESTENV='STM32F4' ;;
     f7)  TESTENV='STM32F7' ;;
  teensy) TESTENV='teensy31' ;;
     t31) TESTENV='teensy31' ;;
     t32) TESTENV='teensy31' ;;
     t35) TESTENV='teensy35' ;;
     t36) TESTENV='teensy35' ;;
          # Build with the last-built env
      -r) [[ -f "$STATE_FILE" ]] || { echo "No previous (-r) build state found." ; exit 1 ; }
          read TESTENV <"$STATE_FILE"
          platformio run --project-dir . -e $TESTENV
          exit
          ;;
          # A -y may come first
      -y) TESTENV=${2:-'-'} ; CHOICE=${3:-0} ;;
  -[a-z]) echo "Unknown flag $TESTENV" ; exit 1 ;;
       -) ;;
esac

# Matching patterns
ISNUM='^[0-9]+$'
ISCMD='^(restore|opt|exec|use|pins|env)_'
ISEXEC='^exec_'
ISCONT='\\ *$'

# List available tests and ask for selection
if [[ $TESTENV == '-' ]]; then
  IND=0
  NAMES=()
  for FILE in $( ls -1 $TESTPATH/*-tests )
  do
    let IND++
    TNAME=${FILE/-tests/}
    TNAME=${TNAME/$TESTPATH\//}
    NAMES+=($TNAME)
    (( IND < 10 )) && echo -n " "
    echo " $IND) $TNAME"
  done

  echo
  for (( ; ; ))
  do
    read -p "Select a test to apply (1-$IND) : " NAMEIND
    [[ -z "$NAMEIND" ]] && { echo '(canceled)' ; exit 1 ; }
    [[ $NAMEIND =~ $ISNUM ]] && ((NAMEIND >= 1 && NAMEIND <= IND)) && { TESTENV=${NAMES[$NAMEIND-1]} ; echo ; break ; }
    echo "Invalid selection."
  done
fi

# Get the contents of the test file
OUT=$( cat $TESTPATH/$TESTENV-tests 2>/dev/null ) || { echo "Can't find test '$TESTENV'." ; exit 1 ; }

# Count up the number of tests
# TODO: List test descriptions with numbers
TESTCOUNT=$( awk "/$ISEXEC/{a++}END{print a}" <<<"$OUT" )

# User entered a number?
(( CHOICE && CHOICE > TESTCOUNT )) && { echo "Invalid test index '$CHOICE' (1-$TESTCOUNT)." ; exit 1 ; }

if [[ $CHOICE == 0 ]]; then
  # List test descriptions with numbers
  echo "Available '$TESTENV' tests:" ; echo "$OUT" | {
    IND=0
    SED=$(which gsed || which sed)
    while IFS= read -r LINE
    do
      if [[ $LINE =~ $ISEXEC ]]; then
        DESC=$( "$SED" -E 's/^.+"(.*)".*$/\1/g' <<<"$LINE" )
        (( ++IND < 10 )) && echo -n " "
        echo " $IND) $DESC"
      fi
    done
  }
  CHOICE=1
  if [[ $TESTCOUNT > 1 ]]; then
    for (( ; ; ))
    do
      read -p "Select a '$TESTENV' test (1-$TESTCOUNT) : " CHOICE
      [[ -z "$CHOICE" ]] && { echo '(canceled)' ; exit 1 ; }
      [[ $CHOICE =~ $ISNUM ]] && ((CHOICE >= 1 && CHOICE <= TESTCOUNT)) && break
      echo ">>> Invalid test index '$CHOICE'."
    done
  fi
fi

# Finally, run the specified test lines
echo "$OUT" | {
  IND=0
  GOTX=0
  CMD=""
  while IFS= read -r LINE
  do
    if [[ $LINE =~ $ISCMD || $GOTX == 1 ]]; then
      ((!IND)) && let IND++
      if [[ $LINE =~ $ISEXEC ]]; then
        ((IND++ > CHOICE)) && break
      else
        ((!HEADER)) && {
          HEADER=1
          echo -e "\n#\n# Test $TESTENV ($CHOICE) $DESC\n#"
        }
        ((IND == CHOICE)) && {
          GOTX=1
          [[ $CMD == "" ]] && CMD="$LINE" || CMD=$( echo -e "$CMD$LINE" | sed -e 's/\\//g' )
          [[ $LINE =~ $ISCONT ]] || { echo $CMD ; eval "$CMD" ; CMD="" ; }
        }
      fi
    fi
  done
}

# Get a -y parameter the lazy way
[[ "$2" == "-y" || "$3" == "-y" ]] && BUILD_YES='Y'

# Build the test too?
if [[ $BUILD_YES != 'Y' ]]; then
  echo
  read -p "Build $TESTENV test #$CHOICE (y/N) ? " BUILD_YES
fi

[[ $BUILD_YES == 'Y' || $BUILD_YES == 'Yes' ]] && {
  platformio run --project-dir . -e $TESTENV
  echo "$TESTENV" >"$STATE_FILE"
}
