module QldTranslinkDepartures

# File lib/qld_translink_departures.rb, line 61
def format_alerts(alerts)
  if alerts.empty?
    return IrcReply.card(
      tag: "QLD",
      title: "TransLink alerts",
      body_lines: ["No active service alerts."],
      heading_style: STYLE_TITLE
    )
  end

  lines = alerts.first(QldConfig::MAX_ALERTS).map.with_index(1) do |row, index|
    text = row[:header]
    text += " — #{row[:description]}" unless row[:description].to_s.empty?
    "#{index}. #{text[0, 180]}"
  end
  IrcReply.card(
    tag: "QLD",
    title: "TransLink alerts",
    body_lines: lines,
    footer_parts: ["GTFS-RT Alerts", "TransLink"],
    heading_style: STYLE_TITLE
  )
end

# File lib/qld_translink_departures.rb, line 37
def format_departures(stop_name:, rows:)
  if rows.empty?
    return IrcReply.card(
      tag: "QLD",
      title: "Departures · #{stop_name}",
      body_lines: ["No real-time departures found for this stop."],
      heading_style: STYLE_TITLE
    )
  end

  lines = rows.map do |row|
    label = row[:route_id].to_s.empty? ? "service" : "route #{row[:route_id]}"
    delay = row[:delay_sec].positive? ? " (+#{row[:delay_sec] / 60}m)" : ""
    "#{row[:time].getlocal('+10:00').strftime('%H:%M')} — #{label}#{delay}"
  end
  IrcReply.card(
    tag: "QLD",
    title: "Departures · #{stop_name}",
    body_lines: lines,
    footer_parts: ["GTFS-RT TripUpdates", "TransLink"],
    heading_style: STYLE_TITLE
  )
end

# File lib/qld_translink_departures.rb, line 15
def format_stops(stops, query:)
  if stops.empty?
    return IrcReply.card(
      tag: "QLD",
      title: "TransLink stops · #{query}",
      body_lines: ["No stops found."],
      heading_style: STYLE_TITLE
    )
  end

  lines = stops.map.with_index(1) do |row, index|
    "#{index}. #{row[:name]} (#{row[:stop_id]})"
  end
  IrcReply.card(
    tag: "QLD",
    title: "TransLink stops · #{query}",
    body_lines: lines,
    footer_parts: ["TransLink GTFS", "SEQ"],
    heading_style: STYLE_TITLE
  )
end

# File lib/qld_translink_departures.rb, line 85
def lookup_departures(query, fetch: nil, region: QldConfig::DEFAULT_REGION, time: Time.now)
  stops = QldTranslinkGtfs.search_stops(query, fetch: fetch, limit: 3)
  return { error: "Stop not found — try !qld stop #{query}" } if stops.empty?

  stop_ids = stops.map { |row| row[:stop_id] }
  message = QldTranslinkRt.fetch_feed(region: region, feed: QldTranslinkRt::FEED_TRIP_UPDATES, fetch: fetch)
  rows = QldTranslinkRt.departures_for_stops(stop_ids, message: message, time: time)
  {
    stop_name: stops.first[:name],
    rows: rows
  }
end