Show message files

lib/models/conversation.dart

@@ -68,7 +68,8 @@ class Conversation extends SerializableElement<Conversation> {
         lastActivity = map["lastActivity"],
         members = map["members"]
             .map((el) => ConversationMember.fromJSON(el))
-            .toList(),
+            .toList()
+            .cast<ConversationMember>(),
         canEveryoneAddMembers = map["canEveryoneAddMembers"],
 
         // By default, we can not do any call

lib/models/conversation_message.dart

@@ -3,12 +3,33 @@ import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/displayed_content.dart';
 import 'package:comunic/utils/account_utils.dart' as account;
 import 'package:comunic/utils/intl_utils.dart';
+import 'package:flutter/material.dart';
 import 'package:meta/meta.dart';
 
 /// Single conversation message
 ///
 /// @author Pierre HUBERT
 
+enum ConversationMessageFileType {
+  IMAGE,
+  VIDEO,
+  AUDIO,
+  PDF,
+  ZIP,
+  OTHER,
+}
+
+const _ConversationFileMimeTypeMapping = {
+  "image/jpeg": ConversationMessageFileType.IMAGE,
+  "image/png": ConversationMessageFileType.IMAGE,
+  "image/gif": ConversationMessageFileType.IMAGE,
+  "video/mp4": ConversationMessageFileType.VIDEO,
+  "audio/m4a": ConversationMessageFileType.AUDIO,
+  "audio/mpeg": ConversationMessageFileType.AUDIO,
+  "application/pdf": ConversationMessageFileType.PDF,
+  "application/zip": ConversationMessageFileType.ZIP,
+};
+
 class ConversationMessageFile {
   final String url;
   final int size;
@@ -27,6 +48,38 @@ class ConversationMessageFile {
         assert(name != null),
         assert(type != null);
 
+  /// Get the type of file
+  ConversationMessageFileType get fileType {
+    if (type != null && _ConversationFileMimeTypeMapping.containsKey(type))
+      return _ConversationFileMimeTypeMapping[type];
+    else
+      return ConversationMessageFileType.OTHER;
+  }
+
+  /// Get the icon associated with file type
+  IconData get icon {
+    switch (fileType) {
+      case ConversationMessageFileType.IMAGE:
+        return Icons.image;
+      case ConversationMessageFileType.VIDEO:
+        return Icons.video_library;
+      case ConversationMessageFileType.AUDIO:
+        return Icons.audiotrack;
+      case ConversationMessageFileType.PDF:
+        return Icons.picture_as_pdf;
+
+      case ConversationMessageFileType.ZIP:
+        return Icons.archive;
+
+      default:
+        return Icons.insert_drive_file;
+    }
+  }
+
+  bool get hasThumbnail => thumbnail != null;
+
+  bool get downloadable => fileType == ConversationMessageFileType.AUDIO;
+
   Map<String, dynamic> toJson() => {
         "url": url,
         "size": size,
@@ -165,10 +218,6 @@ class ConversationMessage extends SerializableElement<ConversationMessage> {
 
   bool get hasFile => file != null;
 
-  bool get hasThumbnail => hasFile && file.thumbnail != null;
-
-  bool get hasImage => hasFile && file.type.startsWith("image/");
-
   bool get isOwner => account.userID() == userID;
 
   bool get isServerMessage => serverMessage != null;
@@ -203,6 +252,10 @@ class ConversationMessage extends SerializableElement<ConversationMessage> {
         userID = map["userID"],
         timeSent = map["timeSent"],
         message = DisplayedString(map["message"]),
-        file = map["file"],
-        serverMessage = map["serverMessage"];
+        file = map["file"] == null
+            ? null
+            : ConversationMessageFile.fromJson(map["file"]),
+        serverMessage = map["serverMessage"] == null
+            ? null
+            : ConversationServerMessage.fromJson(map["serverMessage"]);
 }