feat(access): create storage for user using Android SharedPreference

accessData/src/main/kotlin/com/intelligentbackpack/accessdata/storage/StorageUser.kt

@@ -0,0 +1,16 @@
+package com.intelligentbackpack.accessdata.storage
+
+import com.intelligentbackpack.accessdomain.entities.User
+
+interface StorageUser {
+
+    fun isUserSaved(): Boolean
+
+    fun saveUser(user: User)
+
+    fun getUser(): User
+
+    fun deleteUser()
+
+
+}

accessData/src/main/kotlin/com/intelligentbackpack/accessdata/storage/StorageUserImpl.kt

@@ -0,0 +1,78 @@
+package com.intelligentbackpack.accessdata.storage
+
+import android.content.Context
+import android.content.Context.MODE_PRIVATE
+import android.content.SharedPreferences
+import androidx.security.crypto.EncryptedSharedPreferences
+import androidx.security.crypto.MasterKey
+import com.intelligentbackpack.accessdomain.entities.Role
+import com.intelligentbackpack.accessdomain.entities.User
+
+class StorageUserImpl(private val context: Context) : StorageUser {
+
+    private val name = "IntelligentBackpackSharedPref"
+
+    override fun isUserSaved(): Boolean {
+        val sp: SharedPreferences = context.getSharedPreferences(name, MODE_PRIVATE)
+        return sp.contains("email")
+    }
+
+    override fun saveUser(user: User) {
+        val sp: SharedPreferences = context.getSharedPreferences(name, MODE_PRIVATE)
+        val masterKey: MasterKey =
+            MasterKey.Builder(context)
+                .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
+                .build()
+        val edit: SharedPreferences.Editor = sp.edit()
+        edit.putString("email", user.email)
+        edit.putString("name", user.name)
+        edit.putString("surname", user.surname)
+        edit.putString("role", user.role.name)
+        edit.apply()
+        val esp: SharedPreferences =
+            EncryptedSharedPreferences.create(
+                context,
+                name,
+                masterKey,
+                EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+                EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+            )
+        val encEdit: SharedPreferences.Editor = esp.edit()
+        encEdit.putString("password", user.password)
+        encEdit.apply()
+    }
+
+    override fun getUser(): User {
+        if (!isUserSaved())
+            throw IllegalStateException("User not saved")
+        val sp = context.getSharedPreferences(name, MODE_PRIVATE)
+
+        val masterKey: MasterKey = MasterKey.Builder(context)
+            .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
+            .build()
+        val esp: SharedPreferences = EncryptedSharedPreferences.create(
+            context,
+            name,
+            masterKey,
+            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+        )
+        return User.build {
+            email = sp.getString("email", "")!!
+            name = sp.getString("name", "")!!
+            surname = sp.getString("surname", "")!!
+            password = esp.getString("password", "")!!
+            role = Role.valueOf(sp.getString("role", "USER")!!)
+        }
+    }
+
+    override fun deleteUser() {
+        if (!isUserSaved())
+            throw IllegalStateException("User not saved")
+        val sp: SharedPreferences =
+            context.getSharedPreferences(name, MODE_PRIVATE)
+        val edit: SharedPreferences.Editor = sp.edit()
+        edit.clear()
+        edit.apply()
+    }
+}