Function open_web_app 

pub async fn open_web_app(
    chat_id: i64,
    bot_user_id: i64,
    url: String,
    theme: Option<ThemeParameters>,
    application_name: String,
    message_thread_id: i64,
    reply_to: Option<InputMessageReplyTo>,
    client_id: i32,
) -> Result<WebAppInfo, Error>

Informs TDLib that a Web App is being opened from the attachment menu, a botMenuButton button, an internalLinkTypeAttachmentMenuBot link, or an inlineKeyboardButtonTypeWebApp button. For each bot, a confirmation alert about data sent to the bot must be shown once

Arguments

• chat_id - Identifier of the chat in which the Web App is opened. The Web App can’t be opened in secret chats
• bot_user_id - Identifier of the bot, providing the Web App
• url - The URL from an inlineKeyboardButtonTypeWebApp button, a botMenuButton button, an internalLinkTypeAttachmentMenuBot link, or an empty string otherwise
• theme - Preferred Web App theme; pass null to use the default theme
• application_name - Short name of the application; 0-64 English letters, digits, and underscores
• message_thread_id - If not 0, the message thread identifier in which the message will be sent
• reply_to - Information about the message or story to be replied in the message sent by the Web App; pass null if none
• client_id - The client id to send the request to