diff options
Diffstat (limited to 'app/src/main/java/xyz/adjutor/aniki/presentation/view/TopMangaPage.kt')
| -rw-r--r-- | app/src/main/java/xyz/adjutor/aniki/presentation/view/TopMangaPage.kt | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/app/src/main/java/xyz/adjutor/aniki/presentation/view/TopMangaPage.kt b/app/src/main/java/xyz/adjutor/aniki/presentation/view/TopMangaPage.kt new file mode 100644 index 0000000..2bf84e8 --- /dev/null +++ b/app/src/main/java/xyz/adjutor/aniki/presentation/view/TopMangaPage.kt @@ -0,0 +1,177 @@ +package xyz.adjutor.aniki.presentation.view + +import android.content.Context +import android.content.SharedPreferences +import android.os.Bundle +import android.view.LayoutInflater +import android.view.View +import android.view.ViewGroup +import android.widget.Button +import androidx.fragment.app.Fragment +import androidx.navigation.fragment.findNavController +import androidx.recyclerview.widget.LinearLayoutManager +import androidx.recyclerview.widget.RecyclerView +import androidx.swiperefreshlayout.widget.SwipeRefreshLayout +import com.google.android.material.snackbar.Snackbar +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 retrofit2.Retrofit +import retrofit2.converter.gson.GsonConverterFactory +import xyz.adjutor.aniki.R +import xyz.adjutor.aniki.data.TopMangaApi +import xyz.adjutor.aniki.presentation.model.TopManga +import xyz.adjutor.aniki.presentation.model.TopMangaResponse +import java.lang.reflect.Type + +class TopMangaPage : Fragment() { + + private lateinit var sharedPreferences: SharedPreferences + val gson: Gson = GsonBuilder() + .setLenient() + .create() + private var baseUrl = "https://api.jikan.moe/" //the api's base url + var page: Int = 1 + + override fun onCreateView( + inflater: LayoutInflater, container: ViewGroup?, + savedInstanceState: Bundle? + ): View? { + // Inflate the layout for this fragment + val view = inflater.inflate(R.layout.top_manga_page, container, false) + + sharedPreferences = view.context.getSharedPreferences("sp_manga", Context.MODE_PRIVATE) + + val mangaList: List<TopManga>? = getDataFromCache() + if (mangaList != null) { + showList(view, mangaList) + } else { + makeApiCall(view, baseUrl, 1) + } + + return view + + } + + private fun getDataFromCache(): List<TopManga>? { + //the value of the mangaList json, if nothing is found, return null + val jsonManga: String? = sharedPreferences.getString("jsonMangaList", null) + + //if it's null, well, return null + return if (jsonManga == null) { + null + } else { //else deserialize the list and return it + val listType: Type = object : TypeToken<List<TopManga>>() {}.type + gson.fromJson(jsonManga, listType) + } + } + + override fun onViewCreated(view: View, savedInstanceState: Bundle?) { + super.onViewCreated(view, savedInstanceState) + + //button to return to the home page + view.findViewById<Button>(R.id.button_home).setOnClickListener { + findNavController().navigate(R.id.action_TopMangaPage_to_HomePage) + } + view.findViewById<Button>(R.id.button_prev).setOnClickListener { + if (page > 1) { + page -= 1 + makeApiCall(view, baseUrl, page) + Snackbar.make(requireView(), "Page $page has been loaded.", Snackbar.LENGTH_SHORT) + .setAction("Action", null).show() + } else { + Snackbar.make(requireView(), "You're already on page 1.", Snackbar.LENGTH_SHORT) + .setAction("Action", null).show() + } + } + view.findViewById<Button>(R.id.button_next).setOnClickListener { + page += 1 + makeApiCall(view, baseUrl, page) + Snackbar.make(requireView(), "Page $page has been loaded.", Snackbar.LENGTH_SHORT) + .setAction("Action", null).show() + } + + fun updateList() { + makeApiCall(view, baseUrl, 1) + Snackbar.make(requireView(), "Data refreshed", Snackbar.LENGTH_SHORT) + .setAction("Action", null).show() + } + + //refresh when swiping down at the top of the page + val swipeRefresh: SwipeRefreshLayout = view.findViewById(R.id.swiperefresh) + swipeRefresh.setOnRefreshListener { + updateList() + page = 1 + swipeRefresh.isRefreshing = false + } + + } + + //display the recyclerview + fun showList(view: View, mangaList: List<TopManga>) { + val recyclerView: RecyclerView = view.findViewById(R.id.recycler_view) + recyclerView.setHasFixedSize(true) + recyclerView.layoutManager = LinearLayoutManager(view.context) + recyclerView.adapter = TopMangaAdapter(mangaList) + (recyclerView.adapter as TopMangaAdapter).notifyDataSetChanged() + } + + private fun makeApiCall(view: View, BASE_URL: String, page: Int) { + + val retrofit = Retrofit.Builder() + .baseUrl(BASE_URL) + .addConverterFactory(GsonConverterFactory.create(gson)) + .build() + + val service = retrofit.create(TopMangaApi::class.java) + val call = service.getTopMangaData(page) + + call.enqueue(object : Callback<TopMangaResponse> { + override fun onResponse( + call: Call<TopMangaResponse>, + response: Response<TopMangaResponse> + ) { + if (response.isSuccessful && response.body() != null) { //if the code returned is >= 200 and < 300 AND the the body ain't empty + + val mangaList: List<TopManga> = response.body()!! + .getResults() //getting the "top" field containing our list of TopMangas + saveList(mangaList) + showList( + view, + mangaList + ) //calling the method in charge of displaying on the recyclerview + + } else { + showError() //a snackbar + } + } + + override fun onFailure(call: Call<TopMangaResponse>, t: Throwable) { + showError() + } + + }) + } + + private fun saveList(mangaList: List<TopManga>) { + val jsonString: String = gson.toJson(mangaList) + + sharedPreferences + .edit() + .putString("jsonMangaList", jsonString) + .apply() + } + + private fun showError() { + Snackbar.make( + requireView(), + "API ERROR : Verify your internet connection.", + Snackbar.LENGTH_LONG + ) + .setAction("Action", null).show() + } + +}
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