compose_box: Add start video call button in compose

assets/l10n/app_en.arb

@@ -478,6 +478,10 @@
   "@errorCouldNotEditMessageTitle": {
     "description": "Error title when an exception prevented us from opening the compose box for editing a message."
   },
+  "errorCouldNotAppendCallUrl": "Fail to get call URL",
+  "@errorCouldNotAppendCallUrl": {
+    "description": "Error title when fetching a call URL failed."
+  },
   "successLinkCopied": "Link copied",
   "@successLinkCopied": {
     "description": "Success message after copy link action completed."
@@ -574,6 +578,14 @@
   "@composeBoxAttachFromCameraTooltip": {
     "description": "Tooltip for compose box icon to attach an image from the camera to the message."
   },
+  "composeBoxAddVideoCallTooltip": "Add video call",
+  "@composeBoxAddVideoCallTooltip": {
+    "description": "Tooltip for compose box icon to add a video call url to the message."
+  },
+  "composeBoxAddVoiceCallTooltip": "Add voice call",
+  "@composeBoxAddVoiceCallTooltip": {
+    "description": "Tooltip for compose box icon to add a voice call url to the message."
+  },
   "composeBoxGenericContentHint": "Type a message",
   "@composeBoxGenericContentHint": {
     "description": "Hint text for content input when sending a message."
@@ -654,6 +666,14 @@
       "filename": {"type": "String", "example": "file.txt"}
     }
   },
+  "composeBoxVideoCallLinkText": "Join video call.",
+  "@composeBoxVideoCallLinkText": {
+    "description": "Text for a Markdown link to a video-call URL."
+  },
+  "composeBoxVoiceCallLinkText": "Join voice call.",
+  "@composeBoxVoiceCallLinkText": {
+    "description": "Text for a Markdown link to a voice-call URL."
+  },
   "composeBoxLoadingMessage": "(loading message {messageId})",
   "@composeBoxLoadingMessage": {
     "description": "Placeholder in compose box showing the quoted message is currently loading.",

lib/api/model/events.dart

@@ -29,6 +29,7 @@ sealed class Event {
           case 'update': return UserSettingsUpdateEvent.fromJson(json);
           default: return UnexpectedEvent.fromJson(json);
         }
+      case 'has_zoom_token': return HasZoomTokenEvent.fromJson(json);
       case 'custom_profile_fields': return CustomProfileFieldsEvent.fromJson(json);
       case 'user_group':
         switch (json['op'] as String) {
@@ -1632,6 +1633,27 @@ enum ReactionOp {
   remove,
 }
 
+/// A Zulip event of type `hasZoomToken`: https://zulip.com/api/get-events#has_zoom_token
+@JsonSerializable(fieldRename: FieldRename.snake)
+class HasZoomTokenEvent extends Event {
+  @override
+  @JsonKey(includeToJson: true)
+  String get type => 'has_zoom_token';
+
+  final bool value;
+
+  HasZoomTokenEvent({
+    required super.id,
+    required this.value,
+  });
+
+  factory HasZoomTokenEvent.fromJson(Map<String, dynamic> json) =>
+    _$HasZoomTokenEventFromJson(json);
+
+  @override
+  Map<String, dynamic> toJson() => _$HasZoomTokenEventToJson(this);
+}
+
 /// A Zulip event of type `heartbeat`: https://zulip.com/api/get-events#heartbeat
 @JsonSerializable(fieldRename: FieldRename.snake)
 class HeartbeatEvent extends Event {

lib/api/model/initial_snapshot.dart

@@ -76,6 +76,8 @@ class InitialSnapshot {
 
   final List<UserTopicItem> userTopics;
 
+  final bool hasZoomToken;
+
   final GroupSettingValue? realmCanDeleteAnyMessageGroup; // TODO(server-10)
 
   final GroupSettingValue? realmCanDeleteOwnMessageGroup; // TODO(server-10)
@@ -96,6 +98,10 @@ class InitialSnapshot {
 
   final String realmName;
 
+  final RealmVideoChatProvider realmVideoChatProvider;
+
+  final String? realmJitsiServerUrl; // TODO(server-8)
+
   /// The number of days until a user's account is treated as a full member.
   ///
   /// Search for "realm_waiting_period_threshold" in https://zulip.com/api/register-queue.
@@ -113,14 +119,20 @@ class InitialSnapshot {
 
   final Uri realmIconUrl;
 
+  final Map<String, RealmAvailableVideoChatProviders> realmAvailableVideoChatProviders;
+
   final bool realmPresenceDisabled;
 
   final Map<String, RealmDefaultExternalAccount> realmDefaultExternalAccounts;
 
+  final String? jitsiServerUrl; // TODO(server-8): Can ignore this deprecated field
+
   final int maxFileUploadSizeMib;
 
   final Uri serverEmojiDataUrl;
 
+  final String? serverJitsiServerUrl; // TODO(server-8)
+
   final String? realmEmptyTopicDisplayName; // TODO(server-10)
 
   @JsonKey(readValue: _readUsersIsActiveFallbackTrue)
@@ -182,22 +194,28 @@ class InitialSnapshot {
     required this.userStatuses,
     required this.userSettings,
     required this.userTopics,
+    required this.hasZoomToken,
     required this.realmCanDeleteAnyMessageGroup,
     required this.realmCanDeleteOwnMessageGroup,
     required this.realmDeleteOwnMessagePolicy,
     required this.realmWildcardMentionPolicy,
     required this.realmMandatoryTopics,
     required this.realmName,
+    required this.realmVideoChatProvider,
+    required this.realmJitsiServerUrl,
     required this.realmWaitingPeriodThreshold,
     required this.realmMessageContentDeleteLimitSeconds,
     required this.realmAllowMessageEditing,
     required this.realmMessageContentEditLimitSeconds,
     required this.realmEnableReadReceipts,
     required this.realmIconUrl,
+    required this.realmAvailableVideoChatProviders,
     required this.realmPresenceDisabled,
     required this.realmDefaultExternalAccounts,
+    required this.jitsiServerUrl,
     required this.maxFileUploadSizeMib,
     required this.serverEmojiDataUrl,
+    required this.serverJitsiServerUrl,
     required this.realmEmptyTopicDisplayName,
     required this.realmUsers,
     required this.realmNonActiveUsers,

lib/api/model/model.dart

@@ -56,6 +56,44 @@ class GroupSettingValueNameless extends GroupSettingValue {
   Map<String, dynamic> toJson() => _$GroupSettingValueNamelessToJson(this);
 }
 
+/// As in [InitialSnapshot.realmAvailableVideoChatProviders].
+///
+/// For docs, search for "realm_available_video_chat_providers:"
+/// in <https://zulip.com/api/register-queue>.
+@JsonSerializable(fieldRename: FieldRename.snake)
+class RealmAvailableVideoChatProviders {
+  final String name;
+  final int id;
+
+  RealmAvailableVideoChatProviders({
+    required this.name,
+    required this.id,
+  });
+
+  factory RealmAvailableVideoChatProviders.fromJson(Map<String, dynamic> json) =>
+    _$RealmAvailableVideoChatProvidersFromJson(json);
+
+  Map<String, dynamic> toJson() => _$RealmAvailableVideoChatProvidersToJson(this);
+}
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class VideoCallResponse {
+  final String msg;
+  final String result;
+  final String url;
+
+  VideoCallResponse({
+    required this.msg,
+    required this.result,
+    required this.url,
+  });
+
+  factory VideoCallResponse.fromJson(Map<String, dynamic> json)  =>
+      _$VideoCallResponseFromJson(json);
+
+  Map<String, dynamic> toJson() => _$VideoCallResponseToJson(this);
+}
+
 /// As in [InitialSnapshot.customProfileFields].
 ///
 /// For docs, search for "custom_profile_fields:"
@@ -406,6 +444,28 @@ enum Emojiset {
   String toJson() => _$EmojisetEnumMap[this]!;
 }
 
+/// As in [InitialSnapshot.realmVideoChatProvider].
+///
+/// For docs, search for "realm_video_chat_provider:"
+/// in <https://zulip.com/api/register-queue>.
+@JsonEnum(fieldRename: FieldRename.snake, valueField: "apiValue")
+enum RealmVideoChatProvider {
+  none(apiValue: 0),
+  jitsiMeet(apiValue: 1),
+  zoomUserOAuth(apiValue: 3),
+  bigBlueButton(apiValue: 4),
+  zoomServerToServerOAuth(apiValue: 5),
+  unknown(apiValue: null);
+
+  const RealmVideoChatProvider({
+    required this.apiValue,
+  });
+
+  final int? apiValue;
+
+  int? toJson() => apiValue;
+}
+
 /// As in [InitialSnapshot.realmUserGroups] or [UserGroupAddEvent].
 @JsonSerializable(fieldRename: FieldRename.snake)
 class UserGroup {