package awn

import (
	"context"
	"net/http"
	"net/url"
	"time"

	"github.com/gorilla/schema"

	"gitea.libretechconsulting.com/rmcguire/ambient-weather-local-exporter/pkg/weather"
)

type AWNProvider struct{}

const providerName = "awn"

func (awn *AWNProvider) Name() string {
	return providerName
}

// Takes an inbound request from the ambient device and maps
// to a stable struct for weather updates
func (awn *AWNProvider) ReqToWeather(_ context.Context, r *http.Request) (
	*weather.WeatherUpdate, error,
) {
	awnUpdate, err := UnmarshalQueryParams(r.URL.Query())
	if err != nil {
		return nil, err
	}

	return MapAwnUpdate(awnUpdate), nil
}

func MapAwnUpdate(awnUpdate *AmbientWeatherUpdate) *weather.WeatherUpdate {
	updateTime := time.Now()
	if awnUpdate.DateUTC != nil {
		ut, err := time.Parse(time.DateTime, *awnUpdate.DateUTC)
		if err == nil {
			updateTime = ut
		}
	}

	return &weather.WeatherUpdate{
		DateUTC:        &updateTime,
		StationID:      awnUpdate.PassKey,
		StationType:    awnUpdate.StationType,
		TempOutdoorF:   awnUpdate.TempF,
		HumidityOudoor: awnUpdate.Humidity,
		WindSpeedMPH:   awnUpdate.WindSpeedMPH,
		WindGustMPH:    awnUpdate.WindGustMPH,
		MaxDailyGust:   awnUpdate.MaxDailyGust,
		WindDir:        awnUpdate.WindDir,
		WindDirAvg10m:  awnUpdate.WindDirAVG10m,
		UV:             awnUpdate.UV,
		SolarRadiation: awnUpdate.SolarRadiation,
		HourlyRainIn:   awnUpdate.HourlyRainIn,
		EventRainIn:    awnUpdate.EventRainIn,
		DailyRainIn:    awnUpdate.DailyRainIn,
		WeeklyRainIn:   awnUpdate.WeeklyRainIn,
		MonthlyRainIn:  awnUpdate.MonthlyRainIn,
		YearlyRainIn:   awnUpdate.YearlyRainIn,
		TotalRainIn:    awnUpdate.TotalRainIn,
		Batteries: []weather.BatteryStatus{
			{
				Component: "OutdoorSensor",
				Status:    awnUpdate.BattOut,
			},
			{
				Component: "IndoorSensor",
				Status:    awnUpdate.BattIn,
			},
			{
				Component: "RainSensor",
				Status:    awnUpdate.BattRain,
			},
			{
				Component: "CO2Sensor",
				Status:    awnUpdate.BattCO2,
			},
		},
		TempIndoorF:     awnUpdate.TempInF,
		HumidityIndoor:  awnUpdate.HumidityIn,
		BaromRelativeIn: awnUpdate.BaromRelIn,
		BaromAbsoluteIn: awnUpdate.BaromAbsIn,
	}
}

func UnmarshalQueryParams(query url.Values) (*AmbientWeatherUpdate, error) {
	update := new(AmbientWeatherUpdate)

	decoder := schema.NewDecoder()
	if err := decoder.Decode(update, query); err != nil {
		return nil, err
	}

	return update, nil
}