From d0d54a9d6e7ac947ae86962b6bbc7eeb9ada5011 Mon Sep 17 00:00:00 2001
From: Iván Ávalos <avalos@disroot.org>
Date: Mon, 22 May 2023 23:16:49 -0600
Subject: Se implementa caché para ávatars
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---
 lib/screens/chat_screen.dart      | 12 +++++++-----
 lib/screens/dashboard_screen.dart |  7 ++-----
 lib/screens/new_chat_screen.dart  |  5 ++---
 lib/widgets/cached_avatar.dart    | 22 ++++++++++++++++++++++
 4 files changed, 33 insertions(+), 13 deletions(-)
 create mode 100644 lib/widgets/cached_avatar.dart

diff --git a/lib/screens/chat_screen.dart b/lib/screens/chat_screen.dart
index 61f3f9e..64f8621 100644
--- a/lib/screens/chat_screen.dart
+++ b/lib/screens/chat_screen.dart
@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:linkchat/firebase/auth.dart';
 import 'package:linkchat/firebase/database.dart';
 import 'package:linkchat/models/group.dart';
+import 'package:linkchat/widgets/cached_avatar.dart';
 
 import '../models/favorite.dart';
 import '../models/message.dart';
@@ -42,11 +43,12 @@ class _ChatScreenState extends State<ChatScreen> {
             leadingWidth: 30,
             title: Row(
               children: [
-                ClipRRect(
-                    borderRadius: BorderRadius.circular(30),
-                    child: CircleAvatar(
-                      backgroundImage: NetworkImage(user!.photoUrl),
-                    )),
+                // ClipRRect(
+                //     borderRadius: BorderRadius.circular(30),
+                //     child: CircleAvatar(
+                //       backgroundImage: NetworkImage(user!.photoUrl),
+                //     )),
+                CachedAvatar(user?.photoUrl),
                 Padding(
                   padding: const EdgeInsets.only(left: 10),
                   child: Text(user!.displayName),
diff --git a/lib/screens/dashboard_screen.dart b/lib/screens/dashboard_screen.dart
index 97a9de6..4905b84 100644
--- a/lib/screens/dashboard_screen.dart
+++ b/lib/screens/dashboard_screen.dart
@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:linkchat/widgets/cached_avatar.dart';
 import 'package:provider/provider.dart';
 
 import '../firebase/auth.dart';
@@ -49,11 +50,7 @@ class _DashboardScreenState extends State<DashboardScreen> {
         child: ListView(
           children: [
             UserAccountsDrawerHeader(
-              currentAccountPicture: CircleAvatar(
-                backgroundImage: _auth.currentUser?.photoURL != null
-                    ? NetworkImage(_auth.currentUser!.photoURL!)
-                    : null,
-              ),
+              currentAccountPicture: CachedAvatar(_auth.currentUser?.photoURL),
               accountName: Text(_auth.currentUser?.displayName ?? "Lincite"),
               accountEmail: _auth.currentUser?.email != null
                   ? Text(_auth.currentUser!.email!)
diff --git a/lib/screens/new_chat_screen.dart b/lib/screens/new_chat_screen.dart
index bf7486f..3c37f2c 100644
--- a/lib/screens/new_chat_screen.dart
+++ b/lib/screens/new_chat_screen.dart
@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:linkchat/firebase/database.dart';
 import 'package:linkchat/models/group.dart';
+import 'package:linkchat/widgets/cached_avatar.dart';
 
 import '../firebase/auth.dart';
 import '../models/user.dart';
@@ -71,9 +72,7 @@ class _NewChatScreenState extends State<NewChatScreen> {
               itemBuilder: (context, index) {
                 FsUser user = filteredUsers[index];
                 return ListTile(
-                  leading: CircleAvatar(
-                    backgroundImage: NetworkImage(user.photoUrl),
-                  ),
+                  leading: CachedAvatar(user.photoUrl),
                   title: Text(user.displayName),
                   trailing: IconButton(
                     icon: const Icon(Icons.send),
diff --git a/lib/widgets/cached_avatar.dart b/lib/widgets/cached_avatar.dart
new file mode 100644
index 0000000..e6fcf89
--- /dev/null
+++ b/lib/widgets/cached_avatar.dart
@@ -0,0 +1,22 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+
+class CachedAvatar extends StatelessWidget {
+  final String? avatarUrl;
+  const CachedAvatar(this.avatarUrl, {super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return CircleAvatar(
+      backgroundImage:
+          avatarUrl != null ? CachedNetworkImageProvider(avatarUrl!) : null,
+      backgroundColor: Theme.of(context).colorScheme.primary,
+      child: avatarUrl == null
+          ? Icon(
+              Icons.person,
+              color: Theme.of(context).colorScheme.onPrimary,
+            )
+          : null,
+    );
+  }
+}
-- 
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