scores

#! /usr/bin/env bash

declare -a SCORES
SCOREDIR="$HOME/.config/hangman"

[[ -d $SCOREDIR ]] || mkdir -p "$SCOREDIR"

score_regex="^(.+)[[:space:]](.+)[[:space:]](.+)$"
score_format="^.*[[:space:]](.+)[[:space:]].+$"

fetch_scores() {
  local score
  SCOREFILE="$SCOREDIR/.scores_${MODE,,}"
  [[ -a $SCOREFILE ]] || return 1
  SCORES=()
  while read -r score; do
    [[ $score =~ ^(.*)[[:space:]](.*)$ ]] &&
      SCORES+=("${BASH_REMATCH[1]} ${BASH_REMATCH[2]}")
  done < "$SCOREFILE"
  [[ -z ${SCORES[*]} ]] && return 1
  return 0
}

get_top_score() {
  fetch_scores || echo 0
  [[ ${SCORES[0]} =~ $score_format ]] &&
    echo "${BASH_REMATCH[1]}"
}

compare_scores() {
  local len score index insert
  insert="$1"
  len="${#SCORES[@]}"
  [[ -z ${SCORES[*]} ]] && {
    [[ $insert ]] && insert_score
    return 0
  }
  POSITION=0
  for score in "${SCORES[@]}"; do
    [[ $score =~ $score_format ]] && {
      score="${BASH_REMATCH[1]}"
      if ((SCORE>=score)); then
        [[ $insert ]] && insert_score $((POSITION))
        return 0
      fi
      ((POSITION++))
      ((POSITION==9)) && return 1
    }
  done
  [[ $insert ]] && insert_score
  return 0
}

insert_score() {
  local index len i scores
  scores=()
  index="$1"
  [[ $index ]] || { SCORES+=("$PLAYER $SCORE $TOPWORDSCORE"); return 0; }
  len="${#SCORES[@]}"
  for ((i=0;i<len;i++)); do
    if ((i==index)); then
      scores+=("$PLAYER $SCORE $TOPWORDSCORE")
      ((i<9)) && scores+=("${SCORES[$i]}")
    elif ((i<9)); then
      scores+=("${SCORES[$i]}")
    fi
  done
  SCORES=("${scores[@]}")
}

write_scores() {
  local score
  SCOREFILE="$SCOREDIR/.scores_${MODE,,}"
  {
    for score in "${SCORES[@]}"; do
      echo "$score"
    done
  } > "$SCOREFILE"
}

display_scores() {
  local score rank player score topword
  fetch_scores || return 1
  rank=1
  printf ">   TOP RANKING -  %-7s MODE  <\n" "$MODE"
  for score in "${SCORES[@]}"; do
    [[ $score =~ $score_regex ]] && {
      player="${BASH_REMATCH[1]}"
      score="${BASH_REMATCH[2]}"
      topword="${BASH_REMATCH[3]}"
      printf "%02d. %s ---------- %06d | %06d\n" "$rank" "$player" "$score" "$topword"
      ((rank++))
    }
  done
}