//! LLM Proxy Library
//!
//! This library provides the core functionality for the LLM proxy gateway,
//! including provider integration, token tracking, and API endpoints.

pub mod auth;
pub mod client;
pub mod config;
pub mod dashboard;
pub mod database;
pub mod errors;
pub mod logging;
pub mod models;
pub mod multimodal;
pub mod providers;
pub mod rate_limiting;
pub mod server;
pub mod state;
pub mod utils;

// Re-exports for convenience
pub use auth::{AuthenticatedClient, validate_token};
pub use config::{
    AppConfig, DatabaseConfig, DeepSeekConfig, GeminiConfig, GrokConfig, ModelMappingConfig, ModelPricing,
    OllamaConfig, OpenAIConfig, PricingConfig, ProviderConfig, ServerConfig,
};
pub use database::{DbPool, init as init_db, test_connection};
pub use errors::AppError;
pub use logging::{LoggingContext, RequestLog, RequestLogger};
pub use models::{
    ChatChoice, ChatCompletionRequest, ChatCompletionResponse, ChatCompletionStreamResponse, ChatMessage,
    ChatStreamChoice, ChatStreamDelta, ContentPart, ContentPartValue, FromOpenAI, ImageUrl, MessageContent,
    OpenAIContentPart, OpenAIMessage, OpenAIRequest, ToOpenAI, UnifiedMessage, UnifiedRequest, Usage,
};
pub use providers::{Provider, ProviderManager, ProviderResponse, ProviderStreamChunk};
pub use server::router;
pub use state::AppState;

/// Test utilities for integration testing
#[cfg(test)]
pub mod test_utils {
    use std::sync::Arc;

    use crate::{client::ClientManager, providers::ProviderManager, rate_limiting::RateLimitManager, state::AppState};
    use sqlx::sqlite::SqlitePool;

    /// Create a test application state
    pub async fn create_test_state() -> Arc<AppState> {
        // Create in-memory database
        let pool = SqlitePool::connect("sqlite::memory:")
            .await
            .expect("Failed to create test database");

        // Run migrations
        crate::database::init(&crate::config::DatabaseConfig {
            path: std::path::PathBuf::from(":memory:"),
            max_connections: 5,
        })
        .await
        .expect("Failed to initialize test database");

        let rate_limit_manager = RateLimitManager::new(
            crate::rate_limiting::RateLimiterConfig::default(),
            crate::rate_limiting::CircuitBreakerConfig::default(),
        );

        let client_manager = Arc::new(ClientManager::new(pool.clone()));

        // Create provider manager
        let provider_manager = ProviderManager::new();

        let model_registry = crate::models::registry::ModelRegistry {
            providers: std::collections::HashMap::new(),
        };

        let (dashboard_tx, _) = tokio::sync::broadcast::channel(100);

        let config = Arc::new(crate::config::AppConfig {
            server: crate::config::ServerConfig {
                port: 8080,
                host: "127.0.0.1".to_string(),
                auth_tokens: vec![],
            },
            database: crate::config::DatabaseConfig {
                path: std::path::PathBuf::from(":memory:"),
                max_connections: 5,
            },
            providers: crate::config::ProviderConfig {
                openai: crate::config::OpenAIConfig {
                    api_key_env: "OPENAI_API_KEY".to_string(),
                    base_url: "".to_string(),
                    default_model: "".to_string(),
                    enabled: true,
                },
                gemini: crate::config::GeminiConfig {
                    api_key_env: "GEMINI_API_KEY".to_string(),
                    base_url: "".to_string(),
                    default_model: "".to_string(),
                    enabled: true,
                },
                deepseek: crate::config::DeepSeekConfig {
                    api_key_env: "DEEPSEEK_API_KEY".to_string(),
                    base_url: "".to_string(),
                    default_model: "".to_string(),
                    enabled: true,
                },
                grok: crate::config::GrokConfig {
                    api_key_env: "GROK_API_KEY".to_string(),
                    base_url: "".to_string(),
                    default_model: "".to_string(),
                    enabled: true,
                },
                ollama: crate::config::OllamaConfig {
                    base_url: "".to_string(),
                    enabled: true,
                    models: vec![],
                },
            },
            model_mapping: crate::config::ModelMappingConfig { patterns: vec![] },
            pricing: crate::config::PricingConfig {
                openai: vec![],
                gemini: vec![],
                deepseek: vec![],
                grok: vec![],
                ollama: vec![],
            },
            config_path: None,
        });

        Arc::new(AppState {
            config,
            provider_manager,
            db_pool: pool.clone(),
            rate_limit_manager: Arc::new(rate_limit_manager),
            client_manager,
            request_logger: Arc::new(crate::logging::RequestLogger::new(pool.clone(), dashboard_tx.clone())),
            model_registry: Arc::new(model_registry),
            model_config_cache: crate::state::ModelConfigCache::new(pool.clone()),
            dashboard_tx,
            auth_tokens: vec![],
        })
    }

    /// Create a test HTTP client
    pub fn create_test_client() -> reqwest::Client {
        reqwest::Client::builder()
            .timeout(std::time::Duration::from_secs(30))
            .build()
            .expect("Failed to create test HTTP client")
    }
}