Sharedpreference now working for the DetailTopMangaActivity.kt

1 files changed, 38 insertions, 3 deletions

diff --git a/app/src/main/java/xyz/adjutor/aniki/topmanga/DetailTopMangaActivity.kt b/app/src/main/java/xyz/adjutor/aniki/topmanga/DetailTopMangaActivity.kt
index 1863815..32e3457 100644
--- a/app/src/main/java/xyz/adjutor/aniki/topmanga/DetailTopMangaActivity.kt
+++ b/app/src/main/java/xyz/adjutor/aniki/topmanga/DetailTopMangaActivity.kt
@@ -1,5 +1,7 @@
 package xyz.adjutor.aniki.topmanga
 
+import android.content.Context
+import android.content.SharedPreferences
 import android.os.Bundle
 import android.widget.ImageView
 import android.widget.TextView
@@ -8,6 +10,7 @@ import androidx.appcompat.app.AppCompatActivity
 import com.bumptech.glide.Glide
 import com.bumptech.glide.request.RequestOptions
 import com.google.gson.GsonBuilder
+import com.google.gson.reflect.TypeToken
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
@@ -16,10 +19,12 @@ import retrofit2.converter.gson.GsonConverterFactory
 import xyz.adjutor.aniki.R
 import xyz.adjutor.aniki.manga.MangaApi
 import xyz.adjutor.aniki.manga.RestMangaResponse
+import java.lang.reflect.Type
 
 class DetailTopMangaActivity : AppCompatActivity() {
 
     private var baseUrl = "https://api.jikan.moe/"
+    var sharedPreferences: SharedPreferences? = null
     private val gson = GsonBuilder()
             .setLenient()
             .create()
@@ -38,6 +43,8 @@ class DetailTopMangaActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_detail_top_manga)
 
+        sharedPreferences = this.getSharedPreferences("app_aniki", Context.MODE_PRIVATE)
+
         val mangaId = intent.getStringExtra(intentMangaId)
         val mangaTitle = intent.getStringExtra(intentMangaTitle)
         val mangaRank = intent.getStringExtra(intentMangaRank)
@@ -83,8 +90,26 @@ class DetailTopMangaActivity : AppCompatActivity() {
             fieldIsNull()
         }
 
-        //taking the API's fields I want and displaying them
-        makeApiCall(baseUrl, mangaId.toString())
+        val manga: RestMangaResponse? = getDataFromCache(mangaId.toString())
+        if(manga != null ){
+            showDetail(manga)
+        } else {
+            //taking the API's fields I want and displaying them
+            makeApiCall(baseUrl, mangaId.toString())
+        }
+
+
+    }
+
+    private fun getDataFromCache(mangaId: String): RestMangaResponse? {
+        val jsonManga: String?= sharedPreferences?.getString(mangaId, null)
+
+        if(jsonManga == null) {
+            return null
+        } else {
+            val type: Type = object : TypeToken<RestMangaResponse>() {}.type
+            return gson.fromJson(jsonManga, type)
+        }
     }
 
     private fun makeApiCall(BASE_URL: String, mangaId: String) {
@@ -95,13 +120,14 @@ class DetailTopMangaActivity : AppCompatActivity() {
                 .build()
 
         val service = retrofit.create(MangaApi::class.java)
-        val call = service.getMangaData(mangaId)
+        val call = service.getMangaData(mangaId) //based on the id
 
         call.enqueue(object : Callback<RestMangaResponse> {
             override fun onResponse(call: Call<RestMangaResponse>, response: Response<RestMangaResponse>) {
                 if(response.isSuccessful && response.body() != null){ //if the code returned is >= 200 and < 300 AND the the body ain't empty
 
                     val manga = response.body() //getting the RestMangaResponse fields
+                    saveList(manga)
                     showDetail(manga!!)
 
                 } else {
@@ -144,4 +170,13 @@ class DetailTopMangaActivity : AppCompatActivity() {
     fun fieldIsNull(): String{
         return "Unknown"
     }
+
+    fun saveList(manga: RestMangaResponse?) {
+        val jsonString: String = gson.toJson(manga)
+
+        sharedPreferences
+                ?.edit()
+                ?.putString(manga?.mal_id.toString(), jsonString)
+                ?.apply()
+    }
 }
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