add quite a few more content types

lib/models/content/avatar.dart

@@ -0,0 +1,14 @@
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+import "package:nexus/models/info/image.dart";
+part "avatar.freezed.dart";
+part "avatar.g.dart";
+
+@freezed
+abstract class AvatarContent extends Content with _$AvatarContent {
+  AvatarContent._();
+  const factory AvatarContent({ImageInfo? info, Uri? url}) = _AvatarContent;
+
+  factory AvatarContent.fromJson(Map<String, Object?> json) =>
+      _$AvatarContentFromJson(json);
+}

lib/models/content/content.dart

@@ -1,10 +1,16 @@
 import "package:collection/collection.dart";
 import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/avatar.dart";
 import "package:nexus/models/content/canonical_alias.dart";
 import "package:nexus/models/content/create.dart";
+import "package:nexus/models/content/encryption.dart";
 import "package:nexus/models/content/join_rules.dart";
 import "package:nexus/models/content/membership.dart";
 import "package:nexus/models/content/message.dart";
+import "package:nexus/models/content/name.dart";
+import "package:nexus/models/content/power_levels.dart";
+import "package:nexus/models/content/server_acl.dart";
+import "package:nexus/models/content/topic.dart";
 
 class Content {
   Content();
@@ -22,10 +28,16 @@ class Content {
 @JsonEnum(valueField: "type")
 enum EventType {
   encrypted("m.room.encrypted", Content.fromJson),
+  encryption("m.room.encryption", EncryptionContent.fromJson),
   membership("m.room.member", MembershipContent.fromJson),
   create("m.room.create", CreateContent.fromJson),
   canonicalAlias("m.room.canonical_alias", CanonicalAliasContent.fromJson),
   joinRules("m.room.join_rules", JoinRulesContent.fromJson),
+  powerLevels("m.room.power_levels", PowerLevelsContent.fromJson),
+  serverACL("m.room.server_acl", ServerACLContent.fromJson),
+  avatar("m.room.avatar", AvatarContent.fromJson),
+  topic("m.room.topic", TopicContent.fromJson),
+  name("m.room.name", NameContent.fromJson),
   message("m.room.message", MessageContent.fromJson);
 
   final String type;

lib/models/content/encryption.dart

@@ -0,0 +1,23 @@
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+part "encryption.freezed.dart";
+part "encryption.g.dart";
+
+@freezed
+abstract class EncryptionContent extends Content with _$EncryptionContent {
+  EncryptionContent._();
+  const factory EncryptionContent({
+    required String algorithm,
+
+    @JsonKey(name: "rotation_period_ms")
+    @Default(604800000)
+    int rotationPeriodMS,
+
+    @JsonKey(name: "rotation_period_msgs")
+    @Default(100)
+    int rotationPeriodMessages,
+  }) = _EncryptionContent;
+
+  factory EncryptionContent.fromJson(Map<String, Object?> json) =>
+      _$EncryptionContentFromJson(json);
+}

lib/models/content/name.dart

@@ -0,0 +1,13 @@
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+part "name.freezed.dart";
+part "name.g.dart";
+
+@freezed
+abstract class NameContent extends Content with _$NameContent {
+  NameContent._();
+  const factory NameContent({required String name}) = _NameContent;
+
+  factory NameContent.fromJson(Map<String, Object?> json) =>
+      _$NameContentFromJson(json);
+}

lib/models/content/power_levels.dart

@@ -0,0 +1,38 @@
+import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+
+part "power_levels.freezed.dart";
+part "power_levels.g.dart";
+
+@freezed
+abstract class PowerLevelsContent extends Content with _$PowerLevelsContent {
+  PowerLevelsContent._();
+
+  const factory PowerLevelsContent({
+    @Default(IMap.empty()) IMap<String, int> events,
+    @Default(IMap.empty()) IMap<String, int> users,
+    Notifications? notifications,
+    @Default(50) int ban,
+    @Default(0) int eventsDefault,
+    @Default(0) int invite,
+    @Default(50) int kick,
+    @Default(50) int redact,
+    @Default(50) int stateDefault,
+    @Default(0) int usersDefault,
+  }) = _PowerLevelsContent;
+
+  factory PowerLevelsContent.fromJson(Map<String, Object?> json) =>
+      _$PowerLevelsContentFromJson(json);
+}
+
+@freezed
+abstract class Notifications with _$Notifications {
+  const factory Notifications({
+    @Default(50) int room,
+    @Default(IMapConst({})) IMap<String, int> other,
+  }) = _Notifications;
+
+  factory Notifications.fromJson(Map<String, Object?> json) =>
+      _$NotificationsFromJson(json);
+}

lib/models/content/server_acl.dart

@@ -0,0 +1,18 @@
+import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+part "server_acl.freezed.dart";
+part "server_acl.g.dart";
+
+@freezed
+abstract class ServerACLContent extends Content with _$ServerACLContent {
+  ServerACLContent._();
+  const factory ServerACLContent({
+    @Default(IList.empty()) IList<String> allow,
+    @Default(IList.empty()) IList<String> deny,
+    @Default(true) allowIpLiterals,
+  }) = _ServerACLContent;
+
+  factory ServerACLContent.fromJson(Map<String, Object?> json) =>
+      _$ServerACLContentFromJson(json);
+}

lib/models/content/topic.dart

@@ -0,0 +1,40 @@
+import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
+part "topic.freezed.dart";
+part "topic.g.dart";
+
+@freezed
+abstract class TopicContent extends Content with _$TopicContent {
+  TopicContent._();
+  const factory TopicContent({
+    required String topic,
+    @JsonKey(name: "m.topic") TopicContentBlock? content,
+  }) = _TopicContent;
+
+  factory TopicContent.fromJson(Map<String, Object?> json) =>
+      _$TopicContentFromJson(json);
+}
+
+@freezed
+abstract class TopicContentBlock with _$TopicContentBlock {
+  const factory TopicContentBlock({
+    @Default(IList.empty())
+    @JsonKey(name: "m.text")
+    IList<TextualRepresentation> representations,
+  }) = _TopicContentBlock;
+
+  factory TopicContentBlock.fromJson(Map<String, Object?> json) =>
+      _$TopicContentBlockFromJson(json);
+}
+
+@freezed
+abstract class TextualRepresentation with _$TextualRepresentation {
+  const factory TextualRepresentation({
+    required String body,
+    @Default("text/plain") String mimetype,
+  }) = _TextualRepresentation;
+
+  factory TextualRepresentation.fromJson(Map<String, Object?> json) =>
+      _$TextualRepresentationFromJson(json);
+}

lib/models/event.dart

@@ -19,7 +19,7 @@ abstract class Event with _$Event {
     required String roomId,
     required String eventId,
     required String sender,
-    required String type,
+    required EventType type,
     String? stateKey,
     @EpochDateTimeConverter() required DateTime timestamp,
     IMap<String, dynamic>? decrypted,