Function: createChatService()

function createChatService(options: ChatServiceOptions): {
  createDM: (principalInput: {
     actorId: string;
     organizationId: string;
   }, input: {
     actorIds: string[];
  }) => Promise<ChatConversation>;
  listMembersPage: (principalInput: {
     actorId: string;
     organizationId: string;
   }, input: {
     conversationId: string;
     cursor?: string;
     limit?: number;
   }) => Promise<{
     items: ChatMember[];
     nextCursor: string | null;
  }>;
  addMembers: Promise<ChatConversation>;
  authorizeSubscription: Promise<{
     actorId: string;
     conversationId: string;
     eventVersion: number;
     historyFromSequence: number;
     joinedVersion: number;
     organizationId: string;
  }>;
  createChannel: Promise<ChatConversation>;
  createDirect: Promise<ChatConversation>;
  createGroup: Promise<ChatConversation>;
  getConversation: Promise<ChatConversation>;
  joinChannel: Promise<ChatConversation>;
  listChannels: Promise<{
     items: ChatChannel[];
     nextCursor:   | {
        conversationId: string;
        title: string;
      }
        | null;
  }>;
  listConversations: Promise<{
     items: ChatConversation[];
     nextCursor:   | {
        activityAt: string;
        conversationId: string;
      }
        | null;
  }>;
  listMembers: Promise<ChatMember[]>;
  listMessages: Promise<{
     conversation: ChatConversation;
     items: ChatMessage[];
     nextBeforeSequence: number | null;
  }>;
  markRead: Promise<ChatConversation>;
  removeMember: Promise<void>;
  sendMessage: Promise<ChatMessage>;
  setMemberRole: Promise<void>;
  sync: Promise<ChatSyncPage>;
};

{
  createDM: (principalInput: {
     actorId: string;
     organizationId: string;
   }, input: {
     actorIds: string[];
  }) => Promise<ChatConversation>;
  listMembersPage: (principalInput: {
     actorId: string;
     organizationId: string;
   }, input: {
     conversationId: string;
     cursor?: string;
     limit?: number;
   }) => Promise<{
     items: ChatMember[];
     nextCursor: string | null;
  }>;
  addMembers: Promise<ChatConversation>;
  authorizeSubscription: Promise<{
     actorId: string;
     conversationId: string;
     eventVersion: number;
     historyFromSequence: number;
     joinedVersion: number;
     organizationId: string;
  }>;
  createChannel: Promise<ChatConversation>;
  createDirect: Promise<ChatConversation>;
  createGroup: Promise<ChatConversation>;
  getConversation: Promise<ChatConversation>;
  joinChannel: Promise<ChatConversation>;
  listChannels: Promise<{
     items: ChatChannel[];
     nextCursor:   | {
        conversationId: string;
        title: string;
      }
        | null;
  }>;
  listConversations: Promise<{
     items: ChatConversation[];
     nextCursor:   | {
        activityAt: string;
        conversationId: string;
      }
        | null;
  }>;
  listMembers: Promise<ChatMember[]>;
  listMessages: Promise<{
     conversation: ChatConversation;
     items: ChatMessage[];
     nextBeforeSequence: number | null;
  }>;
  markRead: Promise<ChatConversation>;
  removeMember: Promise<void>;
  sendMessage: Promise<ChatMessage>;
  setMemberRole: Promise<void>;
  sync: Promise<ChatSyncPage>;
}

createDM: (principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorIds: string[];
}) => Promise<ChatConversation>;

listMembersPage: (principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
  cursor?: string;
  limit?: number;
}) => Promise<{
  items: ChatMember[];
  nextCursor: string | null;
}>;

addMembers(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorIds: string[];
  conversationId: string;
}): Promise<ChatConversation>;

authorizeSubscription(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
}): Promise<{
  actorId: string;
  conversationId: string;
  eventVersion: number;
  historyFromSequence: number;
  joinedVersion: number;
  organizationId: string;
}>;

createChannel(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  name: string;
}): Promise<ChatConversation>;

createDirect(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorId: string;
}): Promise<ChatConversation>;

createGroup(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorIds: string[];
  title: string;
}): Promise<ChatConversation>;

getConversation(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
}): Promise<ChatConversation>;

joinChannel(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
}): Promise<ChatConversation>;

listChannels(principalInput: {
  actorId: string;
  organizationId: string;
}, input?: {
  cursor?: {
     conversationId: string;
     title: string;
  };
  limit?: number;
}): Promise<{
  items: ChatChannel[];
  nextCursor:   | {
     conversationId: string;
     title: string;
   }
     | null;
}>;

listConversations(principalInput: {
  actorId: string;
  organizationId: string;
}, input?: {
  cursor?: {
     activityAt: string;
     conversationId: string;
  };
  limit?: number;
  types?: ("group" | "channel" | "direct" | "group_dm")[];
}): Promise<{
  items: ChatConversation[];
  nextCursor:   | {
     activityAt: string;
     conversationId: string;
   }
     | null;
}>;

listMembers(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
}): Promise<ChatMember[]>;

listMessages(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  beforeSequence?: number;
  conversationId: string;
  limit?: number;
}): Promise<{
  conversation: ChatConversation;
  items: ChatMessage[];
  nextBeforeSequence: number | null;
}>;

markRead(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  conversationId: string;
  throughSequence: number;
}): Promise<ChatConversation>;

removeMember(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorId: string;
  conversationId: string;
}): Promise<void>;

sendMessage(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  clientRequestId: string;
  conversationId: string;
  text: string;
}): Promise<ChatMessage>;

setMemberRole(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  actorId: string;
  conversationId: string;
  role: "member" | "admin";
}): Promise<void>;

sync(principalInput: {
  actorId: string;
  organizationId: string;
}, input: {
  afterVersion: number;
  conversationId: string;
  limit?: number;
}): Promise<ChatSyncPage>;