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use once_cell::sync::Lazy;
use regex::Regex;

#[cfg(feature = "validator")]
use validator::Validate;

/// Regex for valid emoji names
///
/// Alphanumeric and underscores
pub static RE_EMOJI: Lazy<Regex> = Lazy::new(|| Regex::new(r"^[a-z0-9_]+$").unwrap());

auto_derived!(
    /// Emoji
    pub struct Emoji {
        /// Unique Id
        #[cfg_attr(feature = "serde", serde(rename = "_id"))]
        pub id: String,
        /// What owns this emoji
        pub parent: EmojiParent,
        /// Uploader user id
        pub creator_id: String,
        /// Emoji name
        pub name: String,
        /// Whether the emoji is animated
        #[cfg_attr(
            feature = "serde",
            serde(skip_serializing_if = "crate::if_false", default)
        )]
        pub animated: bool,
        /// Whether the emoji is marked as nsfw
        #[cfg_attr(
            feature = "serde",
            serde(skip_serializing_if = "crate::if_false", default)
        )]
        pub nsfw: bool,
    }

    /// Parent Id of the emoji
    #[serde(tag = "type")]
    pub enum EmojiParent {
        Server { id: String },
        Detached,
    }

    /// Create a new emoji
    #[cfg_attr(feature = "validator", derive(Validate))]
    pub struct DataCreateEmoji {
        /// Server name
        #[validate(length(min = 1, max = 32), regex = "RE_EMOJI")]
        pub name: String,
        /// Parent information
        pub parent: EmojiParent,
        /// Whether the emoji is mature
        #[serde(default)]
        pub nsfw: bool,
    }
);