From eec8867ddc33262807b03893c0c696e657f7fcab Mon Sep 17 00:00:00 2001
From: Pritimay Sarkar <pritimay@sminnovations.in>
Date: Mon, 23 Oct 2023 02:20:39 +0530
Subject: [PATCH] show only current day registrations

	- reduce database reads by fetching only current day registrations
	- sort users list in latest first order
---
 .../ui/fragments/UserListFragment.kt             | 16 +++++++++++++++-
 app/src/main/res/layout/fragment_user_list.xml   | 14 ++++++++++++++
 app/src/main/res/values/strings.xml              |  1 +
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/example/hposregistration/ui/fragments/UserListFragment.kt b/app/src/main/java/com/example/hposregistration/ui/fragments/UserListFragment.kt
index ea1f623..c30f743 100644
--- a/app/src/main/java/com/example/hposregistration/ui/fragments/UserListFragment.kt
+++ b/app/src/main/java/com/example/hposregistration/ui/fragments/UserListFragment.kt
@@ -8,7 +8,6 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Button
 import android.widget.Toast
 import androidx.fragment.app.viewModels
 import androidx.navigation.fragment.findNavController
@@ -18,11 +17,14 @@ import com.example.hposregistration.data.Constant
 import com.example.hposregistration.data.user.UserData
 import com.example.hposregistration.ui.viewmodels.RegistrationViewModel
 import com.firebase.ui.firestore.FirestoreRecyclerOptions
+import com.google.firebase.firestore.Query
 import com.google.firebase.firestore.ktx.firestore
 import com.google.firebase.ktx.Firebase
 import dagger.hilt.android.AndroidEntryPoint
 import `in`.sminnovations.hposregistration.R
 import `in`.sminnovations.hposregistration.databinding.FragmentUserListBinding
+import java.text.SimpleDateFormat
+import java.util.Date
 
 @AndroidEntryPoint
 class UserListFragment : BaseFragment() {
@@ -160,7 +162,19 @@ class UserListFragment : BaseFragment() {
     private fun fetchFromServer() {
         binding.noList.visibility = View.GONE
         binding.rvOrder.visibility = View.VISIBLE
+        val dateFormat = SimpleDateFormat("yyyy-MM-dd")
+        val currentDate = Date()
+        val today = dateFormat.format(currentDate)
         val query = Firebase.firestore.collection("patientData")
+            .whereGreaterThanOrEqualTo("createdAt", today)
+            .orderBy("createdAt", Query.Direction.DESCENDING)
+        query.get().addOnSuccessListener {
+            if (it.documents.isEmpty()) {
+                binding.emptyRegistrations.visibility = View.VISIBLE
+            } else {
+                binding.emptyRegistrations.visibility = View.GONE
+            }
+        }
         val recyclerViewOptions =
             FirestoreRecyclerOptions.Builder<UserData>().setQuery(query, UserData::class.java)
                 .build()
diff --git a/app/src/main/res/layout/fragment_user_list.xml b/app/src/main/res/layout/fragment_user_list.xml
index 53e02b3..06a70f4 100644
--- a/app/src/main/res/layout/fragment_user_list.xml
+++ b/app/src/main/res/layout/fragment_user_list.xml
@@ -26,6 +26,20 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <TextView
+        android:id="@+id/emptyRegistrations"
+        style="@style/title1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/empty_registrations"
+        android:textColor="@color/black"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <TextView
         android:id="@+id/noList"
         style="@style/title1"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f3aa4e0..8bbfd81 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -55,6 +55,7 @@
     <string name="edit">Edit</string>
     <string name="user_details">User Details</string>
     <string name="internet_is_not_available_and_there_is_no_data_available_in_local_db">Internet is not available and there is no Data available in Local DB</string>
+    <string name="empty_registrations">No registrations are available for display</string>
     <string name="user_id">User ID: %1$s</string>
     <string name="abha_number">Abha Number: %1$s</string>
     <string name="aadhar_number_details">Aadhar Number: %1$s</string>