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package xyz.adjutor.aniki.presentation.controller.anime
import android.content.Context
import android.content.SharedPreferences
import android.view.View
import com.google.gson.Gson
import com.google.gson.GsonBuilder
import com.google.gson.reflect.TypeToken
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import xyz.adjutor.aniki.presentation.Singletons
import xyz.adjutor.aniki.presentation.model.anime.TopAnime
import xyz.adjutor.aniki.presentation.model.anime.TopAnimeResponse
import xyz.adjutor.aniki.presentation.view.anime.TopAnimePage
import java.lang.reflect.Type
import kotlin.properties.Delegates
class TopAnimeController {
lateinit var sharedPreferences: SharedPreferences
lateinit var gson: Gson
lateinit var baseUrl: String //the api's base url
var page by Delegates.notNull<Int>()
lateinit var view: TopAnimePage
fun onStart(topAnimePage: TopAnimePage, viewTopAnimePage: View) {
view = topAnimePage
baseUrl = "https://api.jikan.moe/" //the api's base url
page = 1
gson = GsonBuilder()
.setLenient()
.create()
sharedPreferences =
viewTopAnimePage.context.getSharedPreferences("sp_anime", Context.MODE_PRIVATE)
val animeList: List<TopAnime>? = getDataFromCache()
if (animeList != null) {
view.showList(viewTopAnimePage, animeList)
} else {
makeApiCall(view, baseUrl, 1)
}
}
fun makeApiCall(view: TopAnimePage, BASE_URL: String, page: Int) {
Singletons
.topAnimeApi
.getTopAnimeData(page)
.enqueue(object : Callback<TopAnimeResponse> {
override fun onResponse(
call: Call<TopAnimeResponse>,
response: Response<TopAnimeResponse>
) {
if (response.isSuccessful && response.body() != null) { //if the code returned is >= 200 and < 300 AND the the body ain't empty
val animeList: List<TopAnime> = response.body()!!
.getResults() //getting the "top" field containing our list of TopAnimes
saveList(animeList)
view.showList(
view.requireView(),
animeList
) //calling the method in charge of displaying on the recyclerview
} else {
view.showError() //a snackbar
}
}
override fun onFailure(call: Call<TopAnimeResponse>, t: Throwable) {
view.showError()
}
})
}
private fun saveList(animeList: List<TopAnime>) {
val jsonString: String = gson.toJson(animeList)
sharedPreferences
.edit()
.putString("jsonAnimeList", jsonString)
.apply()
}
private fun getDataFromCache(): List<TopAnime>? {
//the value of the animeList json, if nothing is found, return null
val jsonAnime: String? = sharedPreferences.getString("jsonAnimeList", null)
//if it's null, well, return null
return if (jsonAnime == null) {
null
} else { //else deserialize the list and return it
val listType: Type = object : TypeToken<List<TopAnime>>() {}.type
gson.fromJson(jsonAnime, listType)
}
}
fun onButtonPrevClick() {
if (page > 1) { // if we're not on the first page, because we can't go back if we're on the first one.
page -= 1
makeApiCall(view, baseUrl, page)
view.showText("Page $page has been loaded.")
} else {
view.showText("You're already on page 1. (If you're actually not, refresh the list.)")
}
}
fun onButtonNextClick() {
page += 1
makeApiCall(view, baseUrl, page)
view.showText("Page $page has been loaded.")
}
fun updateList() {
makeApiCall(view, baseUrl, 1)
view.showText("Data refreshed")
page = 1
}
}
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