mlbv-fzf

#!/bin/bash
# vim: set filetype=sh:
# shellcheck disable=SC2236  # prefer [ ! -z ] for readability over [ -n ]
set -o nounset;  # Do not allow use of undefined vars. Use ${VAR:-} to use an undefined VAR
set -o pipefail; # Catch the error in case a piped command fails
# set -o errexit;  # Exit on error. Append "|| true" if you expect an error. Same as 'set -e'
# set -o errtrace; # Exit on error inside any functions or subshells.
# set -o xtrace;   # Turn on traces, useful while debugging (short form: on: 'set -x' off: 'set +x')

################################################################################
# Helpers

SCRIPTNAME=$(basename "$0")

DEBUG=

help() {
cat<<EOF
A simple game launcher interface for MLBV. This provides a TUI wrapper around MLBV.
This script requires [fzf](https://github.com/junegunn/fzf) to be installed and on your path 

On launch, you are presented with the mlbv list of games for the selected day. You can
then select a game, and finally the home or away team, after which mlbv is launched to 
view the game.

There are three ways to select a game:
- Use the arrow keys (or Ctrl-n/p/j/k mappings)
- Start typing for fuzzy-match
- Use your mouse. Double-click to select.

Then hit enter (or double-click) to select the home or away team for the correct feed, 
and then enter again to launch the game via mlbv.

Escape will exit without launching mlbv.

USAGE: 

  $SCRIPTNAME <options> [mlbv arguments]

ARGUMENTS:
  [mlbv arguments]:
     For the most part, you can provide arguments to be passed into mlbv. Some of these
     are captured for displaying the initial game list, notably:
       - The date-based arguments are used for the game selection 
         (e.g. --date ... or --yesterday works as you'd expect)
       - Spoiler control: -n|--no-scores
       - The --recap option filters the game to show the recap

OPTIONS:
  -h|--help: print this help
  --cmd : Only print the final mlbv command (do not invoke it)

EXAMPLES:
  $SCRIPTNAME
  $SCRIPTNAME --no-scores : no spoilers
  $SCRIPTNAME --recap     : show recap of selected game
  $SCRIPTNAME -i t1       : start from top of 1st inning
EOF
exit 1
}

# Logging: these all log to stderr
die() { >&2 colorecho red "FATAL: $*"; exit 1; }
die_with_rc() { local rc=$1; shift; >&2 colorecho red "FATAL: $*, rc=$rc"; exit "$rc"; }
check_rc_die() { local rc=$1; shift; [ "$rc" != "0" ] && die_with_rc "$rc" "$@"; return 0; }
log_error() { >&2 colorecho red "ERROR: $*"; }
log_warn() { >&2 colorecho orange "WARN: $*"; }
log_info() { >&2 echo "$*"; }
log_debug() { if [ -n "$DEBUG" ]; then >&2 echo "DEBUG: $*"; fi; }
log_progress() { >&2 colorecho green "$*"; }

colorecho() {  # usage: colorecho <colour> <text> or colorecho -n <colour> <text>
  local echo_arg=
  if [ "$1" = "-n" ]; then echo_arg="-n"; shift; fi
  local colour="$1"; shift
  case "${colour}" in
    red) echo $echo_arg -e "$(tput setaf 1)$*$(tput sgr0)"; ;;
    green) echo $echo_arg -e "$(tput setaf 2)$*$(tput sgr0)"; ;;
    green-bold) echo $echo_arg -e "$(tput setaf 2; tput bold)$*$(tput sgr0)"; ;;
    yellow) echo $echo_arg -e "$(tput setaf 3; tput bold)$*$(tput sgr0)"; ;;
    orange) echo $echo_arg -e "$(tput setaf 3)$*$(tput sgr0)"; ;;
    blue) echo $echo_arg -e "$(tput setaf 4)$*$(tput sgr0)"; ;;
    purple) echo $echo_arg -e "$(tput setaf 5)$*$(tput sgr0)"; ;;
    cyan) echo $echo_arg -e "$(tput setaf 6)$*$(tput sgr0)"; ;;
    bold) echo $echo_arg -e "$(tput bold)$*$(tput sgr0)"; ;;
    normal|*) echo $echo_arg -e "$*"; ;;
  esac
}


################################################################################
# Main

main() {
  local game_select_switch="-t"
  local cmd_only=
  declare -a preserved_args
  declare -a game_list_args
  while [ $# -gt 0 ] ; do
    case "${1:-""}" in
      -h|--help)
        help
        ;;
      -D|--debug)
        DEBUG=1
        ;;
      -n|--no-sc*)
        game_list_args+=("$1")
        ;;
      -d|--date)
        game_list_args+=("$1"); preserved_args+=("$1")
        shift
        game_list_args+=("$1"); preserved_args+=("$1")
        ;;
      --yes*|--tom*)
        game_list_args+=("$1"); preserved_args+=("$1")
        ;;
      --recap*)
        game_select_switch="-o"
        preserved_args+=("$1")
        ;;
      --cmd)
        cmd_only=1
        ;;
      *)
        preserved_args+=("$1")
        ;;
    esac
    shift
  done

  if ! hash fzf; then
    die "Cannot find fzf"
  fi

  local selected_line away home team dh_game

  # shellcheck disable=SC2086
  selected_line=$(mlbv ${game_list_args[*]} | fzf --ansi --header-lines=2 --cycle --info=default --prompt="mlbv ${preserved_args[*]} | Select game: ")
  if [ ! $? ] || [ -z "$selected_line" ]; then
    log_info "No game selected"
    exit 0
  fi
  log_info $'Selected:\n'"$selected_line"
  
  # grab away and home team abbrevs by keying on the ( and )
  away=$(echo "$selected_line" | awk 'BEGIN{FS="("}{print $2}' | awk 'BEGIN{FS=")"}{print $1}')
  home=$(echo "$selected_line" | awk 'BEGIN{FS="("}{print $3}' | awk 'BEGIN{FS=")"}{print $1}')

  # grab away and home team abbrevs by keying on the ( and ), pure-bash approach:
  # (this doesn't work due to Final(10) result in extra innings
  #away=${selected_line%%)*}  # delete longest match of ')*' from back of string
  #away=${away##*\(}          # delete longest match of '*(' from front of string
  #home=${selected_line%)*}   # delete shortest match of ')*' from back of string
  #home=${home##*\(}          # delete longest match of '*(' from front of string
  
  # Check for doubleheader game
  dh_game=
  if [ "${selected_line/DH-/}" != "$selected_line" ]; then
    dh_game=${selected_line##*DH-}
    dh_game=${dh_game:0:1}
    dh_game="--game $dh_game "
  fi
  
  team=$(printf "%s\n%s" "${away}" "${home}" | fzf --prompt="Select team for feed: ")
  if [ ! $? ] || [ -z "$team" ]; then
    log_info "No team selected"
    exit 0
  fi
  
  local cmd="mlbv $game_select_switch $team ${dh_game}${preserved_args[*]}"
  echo "$cmd"
  if [ -z "$cmd_only" ]; then
    $cmd
  fi
}

# Execute main if script is executed directly (not sourced):
# This allows for shunit2 testing (https://github.com/kward/shunit2)
if [[ "${BASH_SOURCE[0]}" = "$0" ]]; then
  main "$@"
fi