#[macro_use]
extern crate fatcat_api;
extern crate chrono;
extern crate diesel;
extern crate iron_diesel_middleware;
extern crate dotenv;
extern crate futures;
#[macro_use] extern crate hyper;
extern crate swagger;
#[macro_use] extern crate error_chain;
extern crate iron;

pub mod api_server;

mod errors {
    error_chain!{}
}

pub use self::errors::*;
use diesel::pg::PgConnection;
use diesel::prelude::*;
use dotenv::dotenv;
use std::env;
use hyper::header::Headers;
use iron::{Request, Response};
use iron::middleware::AfterMiddleware;
use iron_diesel_middleware::{DieselMiddleware, DieselPooledConnection, DieselReqExt};

pub fn establish_connection() -> PgConnection {
    dotenv().ok();

    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
    PgConnection::establish(&database_url).expect(&format!("Error connecting to {}", database_url))
}

/// Instantiate a new server.
pub fn server() -> Result<api_server::Server> {
    Ok(api_server::Server {})
}

/// HTTP header middleware
header! { (XClacksOverhead, "X-Clacks-Overhead") => [String] }

pub struct XClacksOverheadMiddleware;

impl AfterMiddleware for XClacksOverheadMiddleware {
    fn after(&self, _req: &mut Request, mut res: Response) -> iron::IronResult<Response> {
        res.headers.set(XClacksOverhead("GNU aaronsw, jpb".to_owned()));
        Ok(res)
    }
}