Tarjetakuna/Tarjetakuna

package com.github.sdp.tarjetakuna.ui.webapi

import android.content.Context
import android.widget.Toast
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import com.github.sdp.tarjetakuna.database.CardPossession
import com.github.sdp.tarjetakuna.database.DBMagicCard
import com.github.sdp.tarjetakuna.model.MagicCard
import com.github.sdp.tarjetakuna.utils.Utils


/**
 * ViewModel for the WebApiFragment
 */
open class WebApiViewModel : ViewModel() {

    private val _cardList = MutableLiveData<ArrayList<Pair<MagicCard, Int>>>()
    val cardList: LiveData<ArrayList<Pair<MagicCard, Int>>> = _cardList

    private fun setCardList(list: ArrayList<MagicCard>) {
        _cardList.value = zipWithQuantity(list)
    }


    /**
     * Get all cards information
     */
    fun getRandomCard(context: Context) {
        // check if network is available
        if (Utils.isNetworkAvailable(context)) {
            getRandomCardWeb(context)
        }
        // TODO else get from cache
        else {
            Toast.makeText(context, "No network available", Toast.LENGTH_SHORT).show()
        }
    }

    /**
     * Search cards by name
     */
    fun getCardsByName(context: Context, cardName: String) {
        // check if network is available
        if (Utils.isNetworkAvailable(context)) {
            getCardsByNameWeb(context, cardName)
        }
        // TODO else get from cache
        else {
            Toast.makeText(context, "No network available", Toast.LENGTH_SHORT).show()
        }
    }

    /**
     * Search cards by set code
     */
    fun getCardsBySet(context: Context, setCode: String) {
        // check if network is available
        if (Utils.isNetworkAvailable(context)) {
            getCardsBySetWeb(context, setCode)
        }
        // TODO else get from cache
        else {
            Toast.makeText(context, "No network available", Toast.LENGTH_SHORT).show()
        }
    }

    /**
     * get cards from the web
     */
    private fun getRandomCardWeb(context: Context) {
        WebApi.getRandomCard()
            .thenAccept {
                setCardList(arrayListOf(it.toMagicCard()))
            }
            .exceptionally { e ->
                Toast.makeText(context, "No card found", Toast.LENGTH_SHORT).show()
                null
            }
    }

    /**
     * search cards by name from the web
     */
    private fun getCardsByNameWeb(context: Context, name: String) {
        WebApi.getCardsByName(name)
            .thenAccept {
                setCardList(ArrayList(it.data.map { magicApiCard -> magicApiCard.toMagicCard() }))
            }
            .exceptionally { e ->
                Toast.makeText(context, "No card found", Toast.LENGTH_SHORT).show()
                null
            }
    }

    /**
     * search cards by set code from the web
     */
    private fun getCardsBySetWeb(context: Context, set: String) {
        WebApi.getCardsBySet(set)
            .thenAccept {
                setCardList(ArrayList(it.data.map { magicApiCard -> magicApiCard.toMagicCard() }))
            }
            .exceptionally { e ->
                Toast.makeText(context, "No card found", Toast.LENGTH_SHORT).show()
                null
            }
    }

    private fun zipWithQuantity(
        cards: List<MagicCard>,
        collection: List<DBMagicCard> = emptyList()
    ): ArrayList<Pair<MagicCard, Int>> {
        val result = ArrayList<Pair<MagicCard, Int>>()
        for (card in cards) {
            val quantity =
                collection.find { it.code == card.set.code && it.number == card.number && it.possession == CardPossession.OWNED }
                    ?.quantity ?: 1
            result.add(Pair(card, quantity))
        }
        return result
    }
}