From c2891c3c84b5687ee625621705f4baa458c5fd34 Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Thu, 25 Apr 2019 11:13:02 +0200
Subject: [PATCH] Added image picker

---
 lib/ui/screens/conversation_screen.dart | 12 ++++--
 lib/utils/files_utils.dart              | 50 +++++++++++++++++++++++++
 pubspec.lock                            |  7 ++++
 pubspec.yaml                            |  3 ++
 4 files changed, 69 insertions(+), 3 deletions(-)
 create mode 100644 lib/utils/files_utils.dart

diff --git a/lib/ui/screens/conversation_screen.dart b/lib/ui/screens/conversation_screen.dart
index de90f12..3aaef61 100644
--- a/lib/ui/screens/conversation_screen.dart
+++ b/lib/ui/screens/conversation_screen.dart
@@ -4,6 +4,7 @@ import 'package:comunic/lists/conversation_messages_list.dart';
 import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/new_conversation_message.dart';
 import 'package:comunic/ui/tiles/conversation_message_tile.dart';
+import 'package:comunic/utils/files_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/list_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
@@ -82,6 +83,11 @@ class _ConversationScreenState extends State<ConversationScreen> {
     });
   }
 
+  /// Pick and send an image
+  Future<void> _sendImage(BuildContext context) async {
+    final image = await pickImage(context);
+  }
+
   /// Send a new message
   Future<void> _submitMessage(BuildContext context, String content) async {
     //Send the message
@@ -141,15 +147,15 @@ class _ConversationScreenState extends State<ConversationScreen> {
       child: new Row(
         children: <Widget>[
           // Image area
-          /*new Container(
+          new Container(
               margin: new EdgeInsets.symmetric(horizontal: 4.0),
               child: new IconButton(
                   icon: new Icon(
                     Icons.photo_camera,
                     color: Theme.of(context).accentColor,
                   ),
-                  onPressed: () async {}),
-            ),*/
+                  onPressed: () => _sendImage(context)),
+            ),
 
           // Message area
           new Flexible(
diff --git a/lib/utils/files_utils.dart b/lib/utils/files_utils.dart
new file mode 100644
index 0000000..38dfee2
--- /dev/null
+++ b/lib/utils/files_utils.dart
@@ -0,0 +1,50 @@
+import 'dart:io';
+
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:flutter/material.dart';
+import 'package:image_picker/image_picker.dart';
+
+/// Files utilities
+///
+/// @author Pierre HUBERT
+
+enum _ChooseImageSource { GALLERY, CAMERA }
+
+/// Ask the user to choose an image, either from the gallery or using the camera
+///
+/// Returns null in case of failure
+Future<File> pickImage(BuildContext context) async {
+  /// First, we ask the user to choose between image picker and camera
+  final result = await showDialog<_ChooseImageSource>(
+    context: context,
+    builder: (c) {
+      return AlertDialog(
+        title: Text(tr("Choose an image")),
+        actions: <Widget>[
+          //Gallery
+          FlatButton(
+            onPressed: () => Navigator.pop(context, _ChooseImageSource.GALLERY),
+            child: Text(
+              tr("Image gallery").toUpperCase(),
+            ),
+          ),
+
+          // Camera
+          FlatButton(
+            onPressed: () => Navigator.pop(context, _ChooseImageSource.CAMERA),
+            child: Text(
+              tr("Camera").toUpperCase(),
+            ),
+          ),
+        ],
+      );
+    },
+  );
+
+  if (result == null) return null;
+
+  return await ImagePicker.pickImage(
+      source: result == _ChooseImageSource.CAMERA
+          ? ImageSource.camera
+          : ImageSource.gallery);
+}
diff --git a/pubspec.lock b/pubspec.lock
index 2a87485..dd10036 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -46,6 +46,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  image_picker:
+    dependency: "direct main"
+    description:
+      name: image_picker
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.5.4+3"
   matcher:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index d97dd06..640ab84 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -30,6 +30,9 @@ dependencies:
   # SQLite database is used for caching
   sqflite: ^1.1.5
 
+  # Image picker is used whenever the user wants to send an image
+  image_picker: ^0.5.4+3
+
 dev_dependencies:
   flutter_test:
     sdk: flutter