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use serde::Serialize;

/// Represents a [`LoginUrl`].
///
/// [`LoginUrl`]: https://core.telegram.org/bots/api#loginurl
#[derive(Debug, PartialEq, Eq, Clone, Hash, Serialize)]
#[must_use]
pub struct LoginUrl {
    url: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    forward_text: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    bot_username: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    request_write_access: Option<bool>,
}

impl LoginUrl {
    /// Constructs a new `LoginUrl`.
    pub fn new(url: impl Into<String>) -> Self {
        Self {
            url: url.into(),
            forward_text: None,
            bot_username: None,
            request_write_access: None,
        }
    }

    /// Configures `forward_text`.
    pub fn forward_text(mut self, text: impl Into<String>) -> Self {
        self.forward_text = Some(text.into());
        self
    }

    /// Configures `bot_username`.
    pub fn bot_username(mut self, username: impl Into<String>) -> Self {
        self.bot_username = Some(username.into());
        self
    }

    /// Configures `request_write_access`.
    pub const fn should_request_write_access(
        mut self,
        should_request: bool,
    ) -> Self {
        self.request_write_access = Some(should_request);
        self
    }
}