module GovauTfnswDerby

# File lib/govau_tfnsw_derby.rb, line 92
def format_result(user:, pick:, amount:, stop:, service:, won:, balance:)
  delayed = !GovauTfnsw.on_time?(service)
  status = delayed ? "LATE" : "ON TIME"
  outcome_style = won ? STYLE_WIN : STYLE_LOSE
  outcome_word = won ? "WIN" : "LOSS"
  delay_min = service[:delay_sec].to_i / 60
  delay_text = delay_min.positive? ? ", +#{delay_min}m" : ""
  time_label = GovauTfnsw.format_time(service[:estimated_at] || service[:planned_at])

  lines = [
    IrcFormat.report_header(tag: "GOVAU", title: "Delay Derby · #{stop}", style: STYLE_TITLE),
    "#{user} bet #{pick} #{amount} — next #{service[:destination]} departs #{time_label} (#{status}#{delay_text})",
    IrcFormat.decorate("#{outcome_word} — balance #{balance} credits", outcome_style),
    IrcFormat.report_footer("TfNSW real-time", "data.gov.au")
  ]
  lines.join("\n")
end

# File lib/govau_tfnsw_derby.rb, line 27
def parse_derby_args(parts)
  tokens = Array(parts).map(&:to_s)
  return { error: usage_message } if tokens.empty?

  pick = tokens[0].downcase.to_sym
  unless %i[ontime late].include?(pick)
    return { error: usage_message }
  end

  amount = DEFAULT_BET
  stop_tokens = tokens[1..] || []
  if stop_tokens[0]&.match?(/\A\d+\z/)
    amount = stop_tokens[0].to_i
    stop_tokens = stop_tokens[1..] || []
  end

  stop = stop_tokens.join(" ").strip
  stop = DEFAULT_STOP if stop.empty?

  unless Game.valid_amount?(amount)
    return { error: "Bet must be between #{Game::MIN_BET} and #{Game::MAX_BET} credits." }
  end

  { pick: pick, amount: amount, stop: stop }
end

# File lib/govau_tfnsw_derby.rb, line 53
def play(user:, pick:, amount:, stop:, api_key:, departures:, time: Time.now, store: Game.default_store)
  unless TransitDerby.sydney_peak_hour?(time: time)
    return { error: "Delay Derby runs during weekday peak hour only (07:00-09:30 and 16:00-19:00 Sydney time)." }
  end

  if departures.empty?
    return { error: "No departures available to settle the bet." }
  end

  balance = Game.balance_for(user, store: store)
  if balance < amount
    return { error: "#{user}, you need #{amount} credits (balance: #{balance})." }
  end

  next_service = departures.first
  delayed = !GovauTfnsw.on_time?(next_service)
  won = (pick == :ontime && !delayed) || (pick == :late && delayed)

  Game.deduct_bet(user, amount, store: store)
  winnings = won ? amount * PAYOUT_MULTIPLIER : 0
  Game.credit_winnings(user, winnings, store: store) if winnings.positive?
  new_balance = Game.balance_for(user, store: store)

  {
    win: won,
    service: next_service,
    balance: new_balance,
    message: format_result(
      user: user,
      pick: pick,
      amount: amount,
      stop: stop,
      service: next_service,
      won: won,
      balance: new_balance
    )
  }
end

# File lib/govau_tfnsw_derby.rb, line 23
def usage_message
  "Usage: !govau nsw derby ontime|late [amount] [stop] — peak-hour Delay Derby (default stop: #{DEFAULT_STOP})"
end