From 9e1f3503c1a80d7e108f60f9065ae08abb7c2b3f Mon Sep 17 00:00:00 2001
From: Clyhtsuriva <aimeric@adjutor.xyz>
Date: Tue, 23 Feb 2021 14:53:15 +0100
Subject: Started README and moved the packages.

---
 .../adjutor/aniki/manga/topmanga/TopMangaPage.kt   | 139 +++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt

(limited to 'app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt')

diff --git a/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt
new file mode 100644
index 0000000..d28161a
--- /dev/null
+++ b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt
@@ -0,0 +1,139 @@
+package xyz.adjutor.aniki.manga.topmanga
+
+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.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 java.lang.reflect.Type
+
+class TopMangaPage : Fragment() {
+
+    var sharedPreferences: SharedPreferences? = null
+    val gson = GsonBuilder()
+            .setLenient()
+            .create()
+    var base_url = "https://api.jikan.moe/" //the api's base url
+
+    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, base_url)
+        }
+
+        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
+        if(jsonManga == null) {
+            return null
+        } else { //else deserialize the list and return it
+            val listType: Type = object : TypeToken<List<TopManga>>() {}.type
+            return 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)
+        }
+
+        fun updateList() {
+            makeApiCall(view,base_url)
+            Snackbar.make(requireView(), "Data refreshed", Snackbar.LENGTH_LONG)
+                .setAction("Action", null).show()
+        }
+        val swipeRefresh: SwipeRefreshLayout = view.findViewById(R.id.swiperefresh)
+        swipeRefresh.setOnRefreshListener{
+            updateList()
+            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)
+    }
+
+    private fun makeApiCall(view: View, BASE_URL: String) {
+
+        val retrofit = Retrofit.Builder()
+                .baseUrl(BASE_URL)
+                .addConverterFactory(GsonConverterFactory.create(gson))
+                .build()
+
+        val service = retrofit.create(TopMangaApi::class.java)
+        val call = service.getTopMangaData()
+
+        call.enqueue(object : Callback<RestTopMangaResponse> {
+            override fun onResponse(call: Call<RestTopMangaResponse>, response: Response<RestTopMangaResponse>) {
+                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<RestTopMangaResponse>, 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", Snackbar.LENGTH_LONG)
+                .setAction("Action", null).show()
+    }
+
+}
\ No newline at end of file
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