module SunTimes

# File lib/sun_times.rb, line 13
def fetch(lat, lon, fetch_json: RabbotHttp.method(:fetch_json))
  url = "#{API_URL}?lat=#{lat}&lng=#{lon}&formatted=0"
  data = fetch_json.call(url)
  return nil unless data["status"] == "OK"

  results = data["results"] || {}
  {
    sunrise: results["sunrise"],
    sunset: results["sunset"],
    day_length: results["day_length"]
  }
rescue StandardError
  nil
end

# File lib/sun_times.rb, line 36
def format_day_length(seconds)
  total = seconds.to_i
  hours = total / 3600
  minutes = (total % 3600) / 60
  "#{hours}h #{minutes}m"
end

# File lib/sun_times.rb, line 43
def format_report(place:, times:)
  sunrise = format_time_utc(times[:sunrise])
  sunset = format_time_utc(times[:sunset])
  return nil unless sunrise && sunset

  header = IrcFormat.report_header(tag: "SUN", title: place.to_s.strip, style: STYLE_TITLE)
  body = "Sunrise — #{sunrise} · Sunset — #{sunset}"
  length = format_day_length(times[:day_length])
  footer = IrcFormat.report_footer("day length #{length}")
  [header, body, footer].join("\n")
end

# File lib/sun_times.rb, line 28
def format_time_utc(iso_string)
  return nil if iso_string.nil? || iso_string.to_s.strip.empty?

  Time.parse(iso_string.to_s).utc.strftime("%H:%M UTC")
rescue StandardError
  nil
end

# File lib/sun_times.rb, line 55
def report_for_coords(lat, lon, place:, fetch_json: RabbotHttp.method(:fetch_json))
  times = fetch(lat, lon, fetch_json: fetch_json)
  return "Could not fetch sun times for #{place}" unless times

  format_report(place: place, times: times) || "Could not format sun times for #{place}"
end