module FuelHunt

# File lib/fuel_hunt.rb, line 30
def postcode_for(suburb)
  suburb_postcodes[suburb.to_s] || suburb_postcodes.find { |name, _| name.casecmp?(suburb.to_s) }&.last
end

# File lib/fuel_hunt.rb, line 26
def reset_suburb_postcodes!
  @suburb_postcodes = nil
end

# File lib/fuel_hunt.rb, line 34
def start_hunt(network:, channel:, suburb: nil, fuel_type: nil, cheapest_price: nil, rand: ->(max) { Random.rand(0...max) })
  suburb ||= SUBURBS[rand.call(SUBURBS.length)]
  fuel_type ||= FUEL_TYPES[rand.call(FUEL_TYPES.length)]
  hunt = {
    "suburb" => suburb,
    "fuel_type" => fuel_type,
    "answer" => cheapest_price,
    "winner" => nil
  }
  GameStore.save(plugin: PLUGIN, network: network, channel: channel, game: hunt)
  {
    message: [
      IrcFormat.report_header(tag: "FUEL", title: "Fuel Hunt", style: STYLE_TITLE),
      "Suburb: #{suburb} — fuel: #{fuel_type}",
      "First !fuel guess <price> within #{TOLERANCE_CENTS}c wins #{DEFAULT_PRIZE} credits",
      IrcFormat.report_footer("FuelCheck NSW")
    ].join("\n")
  }
end

# File lib/fuel_hunt.rb, line 54
def submit_guess(network:, channel:, user:, price:, store: Game.default_store)
  hunt = GameStore.load(plugin: PLUGIN, network: network, channel: channel)
  return { error: "No Fuel Hunt active — !fuel hunt to start." } unless hunt
  return { error: "Fuel Hunt already won by #{hunt['winner']}." } if hunt["winner"]

  answer = hunt["answer"]
  return { error: "Fuel Hunt not ready — wait for price lookup." } if answer.nil?

  diff = (price.to_f - answer.to_f).abs
  if diff <= TOLERANCE_CENTS
    hunt = hunt.merge("winner" => user)
    GameStore.clear(plugin: PLUGIN, network: network, channel: channel)
    Game.credit_winnings(user, DEFAULT_PRIZE, store: store)
    balance = Game.balance_for(user, store: store)
    {
      message: [
        IrcFormat.report_header(tag: "FUEL", title: "Fuel Hunt", style: STYLE_TITLE),
        IrcFormat.decorate("#{user} wins — #{format('%.1f', price)}c/L (answer #{format('%.1f', answer)}c/L)", STYLE_WIN),
        "Prize #{DEFAULT_PRIZE} credits — balance #{balance}",
        IrcFormat.report_footer("FuelCheck NSW")
      ].join("\n")
    }
  else
    { message: "#{user} guessed #{format('%.1f', price)}c/L — not within #{TOLERANCE_CENTS}c." }
  end
end

# File lib/fuel_hunt.rb, line 22
def suburb_postcodes
  @suburb_postcodes ||= JSON.parse(File.read(SUBURB_DATA_PATH))
end