package net.pterodactylus.rhynodge.webpages.weather.wettercom

import net.pterodactylus.rhynodge.states.AbstractState
import java.time.LocalDateTime

/**
 * Contains the state parsed from [wetter.com](https://www.wetter.com/).
 *
 * @author [David ‘Bombe’ Roden](mailto:bombe@pterodactylus.net)
 */
class WetterComState(val dateTime: LocalDateTime) : AbstractState(true) {

    val hours: List<HourState> = mutableListOf()

    fun addHour(hourState: HourState) {
        (hours as MutableList<HourState>).add(hourState)
    }

    enum class WindDirection {

        NONE,
        NORTH,
        NORTHEAST,
        EAST,
        SOUTHEAST,
        SOUTH,
        SOUTHWEST,
        WEST,
        NORTHWEST

    }

    data class HourState(val hourIndex: Int, val temperature: Double, val rainProbability: Double, val rainAmount: Double, val windDirection: WindDirection, val windSpeed: Double, val description: String, val image: String) {

        class Builder(private val hourIndex: Int) {

            fun temperature(temperature: Double) = _1(temperature)

            inner class _1(private val temperature: Double) {

                fun rainProbability(rainProbability: Double) = _2(rainProbability)

                inner class _2(private val rainProbability: Double) {

                    fun rainAmount(rainAmount: Double) = _3(rainAmount)

                    inner class _3(private val rainAmount: Double) {

                        fun windFrom(windDirection: WindDirection) = _4(windDirection);

                        inner class _4(private val windDirection: WindDirection) {

                            fun at(windSpeed: Double) = _5(windSpeed)

                            inner class _5(private val windSpeed: Double) {

                                fun describedAs(description: String) = _6(description)

                                inner class _6(private val description: String) {

                                    fun withImage(imageUrl: String) = _7(imageUrl)

                                    inner class _7(private val imageUrl: String) {

                                        fun build(): HourState {
                                            return HourState(hourIndex, temperature, rainProbability, rainAmount, windDirection, windSpeed, description, imageUrl)
                                        }

                                    }

                                }

                            }

                        }

                    }

                }

            }

        }

        companion object {

            fun atHour(hourIndex: Int) = Builder(hourIndex)

        }

    }

}

fun String.toWindDirection(): WetterComState.WindDirection {
    return when (this) {
        "N" -> WetterComState.WindDirection.NORTH
        "NE" -> WetterComState.WindDirection.NORTHEAST
        "E" -> WetterComState.WindDirection.EAST
        "SE" -> WetterComState.WindDirection.SOUTHEAST
        "S" -> WetterComState.WindDirection.SOUTH
        "SW" -> WetterComState.WindDirection.SOUTHWEST
        "W" -> WetterComState.WindDirection.WEST
        "NW" -> WetterComState.WindDirection.NORTHWEST
        else -> WetterComState.WindDirection.NONE
    }
}