// Common types shared across all protocol implementations

use serde::{Deserialize, Serialize};

/// Helper function for serde default value
pub fn default_true() -> bool {
    true
}

/// Common trait for all generation requests across different APIs
pub trait GenerationRequest: Send + Sync {
    /// Check if the request is for streaming
    fn is_stream(&self) -> bool;

    /// Get the model name if specified
    fn get_model(&self) -> Option<&str>;

    /// Extract text content for routing decisions
    fn extract_text_for_routing(&self) -> String;
}

/// Helper type for string or array of strings
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(untagged)]
pub enum StringOrArray {
    String(String),
    Array(Vec<String>),
}

/// LoRA adapter path - can be single path or batch of paths (SGLang extension)
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(untagged)]
pub enum LoRAPath {
    Single(Option<String>),
    Batch(Vec<Option<String>>),
}