lorchess/game-add

#!/usr/bin/env bash
# Copyright 2014 Vladimir Ivanov <ivvl82@gmail.com>
# Distributed under the terms of the GNU General Public License v2

REPODIR="`dirname $0`"
TOURNAMENT="2014/3-fallenleaves"

# Config file for players
ply_ini="${REPODIR}/${TOURNAMENT}/players.ini"

# Version information
VERSION="0.1"

argv0="${0##*/}"

usage() {
    cat <<EOF
Store a chess game played on lichess.org

Usage:
  $argv0 -t <num> <url>
  $argv0 -h
  $argv0 -v

The first form fills the result of a chess game and stores its PGN
file. Assumes that the game is available at <url> (lichess.org) and
corresponds to tournament tour <num>.

The second form shows this help output. The third form shows version
information.
EOF

    exit "${1:-0}"
}

version() {
    exec echo "${argv0}-${VERSION}"
}

game_get_players() {
    # Extract players on Lichess
    local w_lichess=$(sed -En "s/\[White \"([^\"]*)\"\]/\1/p" < "$tmp_pgn")
    local b_lichess=$(sed -En "s/\[Black \"([^\"]*)\"\]/\1/p" < "$tmp_pgn")

    # Get names of white and black players
    local counter=1 players=()
    game_parse_config
    while eval "config_section_player${counter}" 2>/dev/null; do
        players+=("$name")
        [[ "$lichess" == "$w_lichess" ]] && white="$name"
        [[ "$lichess" == "$b_lichess" ]] && black="$name"
        counter=$((counter+1))
    done
    [[ -z "$white" ]] && fix_white_player
    [[ -z "$black" ]] && fix_black_player
}

game_parse_config() {
    # Copy player INI file to the temporary location
    # NOTE: an empty line is added to the file beginning in order to
    # match the only first occurrence for non-GNU sed
    echo > "$tmp_ini"
    cat "$ply_ini" >> "$tmp_ini"

    # Remove tabs or spaces around the `='
    sed -i".prev" -E "s/[[:blank:]]*=[[:blank:]]*/=/g" "$tmp_ini"

    # Transform section labels into function declaration
    sed -i".prev" -E "1,/^\[.*\]/s/^\[([^]]*)\]/config_section_\1() {/g" "$tmp_ini"
    sed -i".prev" -E "s/^\[([^]]*)\]/}\\"$'\n'"config_section_\1() {/g" "$tmp_ini"
    echo -e "\n}" >> "$tmp_ini"

    # Load the file
    source "$tmp_ini"
}

fix_white_player() {
    local number
    echo "Lichess player '${w_lichess}' not found."
    choose_player
    white="${players[$number]}"
}

fix_black_player() {
    local number
    echo "Lichess player '${b_lichess}' not found."
    choose_player
    black="${players[$number]}"
}

choose_player() {
    echo "Please choose a proper name from the list below:"
    for ((i=0; i<${#players[@]}; ++i)); do
        echo "$((i+1)) ${players[$i]}"
    done \
        | column -t \
        | sed -E "s/^([0-9]*)/$(tput setaf 6)\1$(tput sgr0)/g" # highlight number
    echo -n "Put number> "
    read number

    if (( "$number" < 1 || "$number" > ${#players[@]} )); then
        die "Incorrect player number."
    fi
    number=$((number-1))
}

game_add_to_repo() {
    local date_re="[0-9?]{2}\.[0-9?]{2}\.[0-9?]{4}"
    # Check if the tour number is correct
    local correct=false
    while IFS= read line; do
        if [[ "$line" =~ ${date_re}\ *[-—]\ *${white}\ *${black} ]]; then
            correct=true
            break
        fi
    done < "$tour_info"
    if ! $correct; then
        die "Game '${white} vs. ${black}' not found in ${tour_info}."
    fi

    [[ -d "$pgn_dir" ]] && die "Directory ${pgn_dir} already exist."
    echo "Creating directory ${pgn_dir}..."
    mkdir -p "$pgn_dir"

    echo "Storing PGN file..."
    cp "$tmp_pgn" "${pgn_dir}/1.pgn"

    echo "Updating tour_info..."
    local game_date="${pgn_date:8:2}.${pgn_date:5:2}.${pgn_date::4}"
    local result=$(sed -En "s/\[Result \"([^\"]*)\"\]/\1/p" < "$tmp_pgn")
    case "$result" in
        "1-0")     result="1:0" ;;
        "0-1")     result="0:1" ;;
        "1/2-1/2") result="0.5:0.5" ;;
    esac

    sed -i".orig" \
        -E "s/${date_re}( *[-—] *)${white} *${black}/${game_date}\1${white} ${result} ${black}/g" \
        "$tour_info"
    rm "${tour_info}.orig"
}

game_git_commit() {
    git pull
    git add "${pgn_dir}/1.pgn" "$tour_info"
    git commit -m "Tour ${TOUR#0}: ${white} vs. ${black}."
    git push
}

die() {
    echo "$@" 1>&2
    exit 1
}

checkargs() {
    if [[ "$opt" == t && "$OPTARG" =~ ^[0-9]+$ ]]; then
        TOUR=$(printf "%02g" "$OPTARG")
    fi
}

TOUR=""
while getopts "t:hv" opt; do
    case "$opt" in
        t) checkargs ;;
        h) usage ;;
        v) version ;;
        *) usage 1 ;;
    esac
done

shift $(($OPTIND - 1))
# For now, tour number should be given explicitly
[[ -z "$TOUR" || -z "$1" ]] && usage 1

tour_info="${REPODIR}/${TOURNAMENT}/tours/${TOUR}/tour_info"
[[ ! -f "$tour_info" ]] && die "File ${tour_info} not found."

# Temporary files
tmp_ini=$(mktemp -t `basename $ply_ini`.XXXXXX)
tmp_pgn=$(mktemp -t pgn.XXXXXX)
trap "rm ${tmp_ini} ${tmp_ini}.prev ${tmp_pgn}" EXIT

# Download PGN file
[[ "$1" =~ ^(http://[^/]*)/([^/]*) ]]
pgn_url="${BASH_REMATCH[1]}/${BASH_REMATCH[2]::8}/pgn"
curl -q --fail --location --silent "$pgn_url" > "$tmp_pgn" \
    || die "PGN file not found."

white="" black=""
game_get_players

# Extract the game date from PGN
pgn_date=$(sed -En "s/\[Date \"([^\"]*)\"\]/\1/p" < "$tmp_pgn")
pgn_date=$(tr '.' '-' <<< "$pgn_date")
pgn_dir="${REPODIR}/${TOURNAMENT}/tours/${TOUR}/${pgn_date}-${white}-vs-${black}"

game_add_to_repo
game_git_commit

exit 0